The ammonium ions make solutions of Mohr's salt slightly acidic, which slows this oxidation process. Ammonia also reacts with water, to some extent, to form the NH 4 + and OH-ions. Iron is transported through the blood stream via transferrins. Call ... ammonium chloride that is mildly acidic and is a clear white water-soluble crystalline salt of ammonia in its pure form. A potential route toward B-N-containing polymer motifs using earth-abundant metal catalysts J Am Chem Soc . Aqueous Ammonia: Aqueous ammonia reacts with Fe(II) ions to produce white gelatinous Fe(OH) 2, which oxidizes to form red-brown Fe(OH) 3: Fe 2+ (aq) + 2NH 3 (aq) + 3H 2 O(l) <==> Fe(OH) 2 (s) + 2NH 4 + (aq) Aqueous ammonia reacts with Fe(III) ions to produce red-brown Fe(OH) 3: Detailed facts of importance to specialist readers are published as ”Supporting Information”. Ammonium iron(II) sulfate, or Mohr's salt, is the inorganic compound with the formula (NH4)2Fe(SO4)2(H2O)6. Similar reaction with the triphenylmethyl radical yields [PhB(MesIm)3FeNCPh3]. This compound is a member of a group of double sulfates called Schönites or Tutton's salts. This stability extends somewhat to solutions reflecting the effect of pH on the ferrous/ferric redox couple. Besides moist ammonia will not react with iron or steel. Containing two different cations, Fe2+ and NH4+, it is classified as a double salt of ferrous sulfate and ammonium sulfate. This chemistry video tutorial provides a basic introduction into complex ions, ligands, and coordination compounds. The most common catalyst in the Haber-Bosch process for the hydrogenation of dinitrogen (N 2) to ammonia (NH 3) is an iron surface promoted with potassium cations (K +), but soluble iron complexes have neither reduced the N-N bond of N 2 to nitride (N 3–) nor produced large amounts of NH 3 from N 2.We report a molecular iron complex that reacts with N 2 and a potassium reductant to … ... Electrical uniformity is good (metal parts with … Chickpet, Bengaluru 105, Sethiya Complex, 20th Cross, Chickpet, Bengaluru - 560053, Dist. to mark the iron in an organic complex. When a sample absorbs light, what we see is the sum of the remaining colors that strikes ... metal complex with no d-eletron to be colorless as well. Working off-campus? Most of it is found in hemoglobin. Iron tablets usually contain ferrous sulfate, with iron present as Fe2+ ions. Since Fe2+ does not form a coloured complex with thiocyanate, permanganate ions are added to oxidise all the Fe2+ to form Fe3+ ions. Ferrous ammonium sulfate forms light green crystals. A Potential Route toward B–N-Containing Polymer Motifs Using Earth-Abundant Metal Catalysts. In the body of mammals, iron is stored as iron(III) hydroxide particles surrounded by proteinaceous coat, known as ferritin. The Liquid Ammonia Pumps have fully compatible graded cast iron body with versatile impeller shaft and a reliable Despite the complex progression multielectron/-proton reactions required, we clearly have an unexpectedly viable and robust process that leads to ammonia. Therefore only steel or ductile iron should be used for ammonia systems, ammonia containers, valves, fittings and piping. This salt when heated ionises to give all cations and anions present in it. 1333-00-2) is a complex salt of undetermined structure composed of 14.5 to 16 percent iron, approximately 7.5 percent ammonia, and 75 percent citric acid and occurs as thin transparent green scales, as granules, as a powder, or as transparent green crystals. The engine exhaust emission is a complex mixture, whose composition and flow rate change continuously depending on a variety of factors such as driving conditions, … With regards to the bonding, crystals consist of octahedra [Fe(H2O)6]2+ centers, which are hydrogen bonded to sulfate and ammonium.[2]. They are made available as submitted by the authors. Our results also demonstrate that iron rather than molybdenum is the element necessary for photoreduction of N 2 to NH 3 . Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. If you do not receive an email within 10 minutes, your email address may not be registered, View Mobile Number … Iron complex-catalyzed ammonia-borane dehydrogenation. Unlimited viewing of the article PDF and any associated supplements and figures. Bengaluru, Karnataka. Fe2++ 3 phen  Fe(phen) 3 2+ NN 1,10 – phenanthrolene (phen) The molar absorptivity of the complex, [(C12H8N2)3Fe] Because the iron is forming 6 bonds, the co-ordination number of the iron is 6. The iron solutions are reacting with very diluted potassium thiocyanate forming different thiocyanato compounds and complexes. Response Rate : 25%. Aqua ammonia is used as the nitrogen source for fertilizer. In acetate buffer (pH= 5), Fe3+ forms a complex of [NH4+], Except where otherwise noted, data are given for materials in their, "Ammonium Ferrous Sulphate 100 g (Mohr's Salt)", https://en.wikipedia.org/w/index.php?title=Ammonium_iron(II)_sulfate&oldid=991022095, Chemical articles with multiple compound IDs, Chemical articles with multiple CAS registry numbers, Chemical articles with multiple PubChem CIDs, Pages using collapsible list with both background and text-align in titlestyle, Articles containing unverified chemical infoboxes, Creative Commons Attribution-ShareAlike License, 100 to 110 °C (212 to 230 °F; 373 to 383 K), This page was last edited on 27 November 2020, at 21:19. 10,11 The principle of electronic tuning … The Bruker X8 X‐ray diffractometer was purchased via an NSF CRIF:MU award to The University of New Mexico, CHE‐0443580. 2+ turns blue when ammonia is added to give [Ni(NH 3)6] 2+. It is a common laboratory reagent because it is readily crystallized, and crystals resist oxidation by air. Reactions of Iron Ions with Ammonia. Liquid Ammonia Pumps are used for liquid refrigerant re-circulation systems with one or two main accumulators. Learn more. This is known as a ligand exchange reaction, and involves an equilibrium such as this one: The formation of this new soluble complex causes the precipitate to dissolve. Abstract. A series of iron bis(phosphinite) pincer complexes with the formula of [2,6-(iPr2PO)2C6H3]Fe(PMe2R)2H (R = Me, 1; R = Ph, 2) or [2,6-(iPr2PO)2-4-(MeO)C6H2]Fe(PMe2Ph)2H (3) have been tested for catalytic dehydrogenation of ammonia borane (AB). In the iron(II) case: \[ [Fe(H_2O)_6]^{2+} + 2NH_3 \rightarrow [Fe(H_2O)_4(OH)_2] + 2NH_4^+\] The appearance is just the same as in when you add sodium hydroxide solution. Ammonium iron sulfate, or Mohr's salt, is the inorganic compound with the formula (NH4)2Fe(SO4)2(H2O)6. orange colored complex in direct proportion to the ferrous iron concentration. Similar reaction with the triphenylmethyl radical yields … This means oxygen uptake is inhibited and carbon monoxide poisoning can result. 1s 2 2s 2 2p 6 3s 2 3p 6 3d 10 4s 1. 9 We previously reported quaternary compounds in the (Ni,Co) 2 Mo 3 N system with good activity for ammonia synthesis. Like the other ferrous sulfate salts, ferrous ammonium sulfate dissolves in water to give the aquo complex [Fe(H2O)6]2+, which has octahedral molecular geometry. The nitrogen comes from the air and the hydrogen is obtained mainly from natural gas (methane). require a digestion … R. Tom Baker * † John C. Gordon * ‡ Charles W. Hamilton ‡ Neil J. Henson § Po-Heng Lin † Steven Maguire † Muralee Murugesu † Brian L. Scott ⊥ Nathan C. Smythe ‡ It is used in the Fricke's dosemeter to measure high doses of gamma rays.[4]. These Liquid Ammonia Pumps are developed keeping in view the Indian atmosphere and operating conditions. CuCl 4 2-This is a simple example of the formation of a complex ion with a negative charge. Any queries (other than missing content) should be directed to the corresponding author for the article. The protein haemoglobin has an iron atom that is coordinately bonded to four nitrogen atoms that are part of larger molecules. Mohr's salt is named after the German chemist Karl Friedrich Mohr, who made many important advances in the methodology of titration in the 19th century. When concentrated ammonia solution (ammonium hydroxide) is added to a clear, light blue, aqueous solution of copper (II) chloride, a powdery, light blue precipitate of copper (II) hydroxide forms. Such documents are peer‐reviewed, but not copy‐edited or typeset. This can be interpreted as “structural anisotropy” of the ammonia iron caused by defects and size and strain effects. Iron in both oxidation states forms many complex ions. Reaction of iron with ammonia Fe(II) and Fe(III) does not form complexes with ammonia but are both precipitated as hydroxides: NH 3 (aq) + H 2 O (l) NH 4 + (aq) + OH − (aq) However, a few of such complexes are strongly colored, for example, MnO 4-or [Cr 2O7] 2-. It is a common laboratory reagent because it is readily crystallized, and crystals resist oxidation by air. In analytical chemistry, this salt is the preferred source of ferrous ions as the solid has a long shelf life, being resistant to oxidation. It is an ammonia-free formula and gives an excellent process to reduce the problem of treating ammonia-containing wastewater. Find here verified Ammonia Manufacturers in india,Ammonia Suppliers in India,Ammonia Wholesalers Traders Exporters in india, Get Ammonia Price List & Quotation from Suppliers and Manufacturers directly,Ammonia Business Directory and B2B Marketplace ... Gujarat, India 4, Kailash Complex, Near Galaxy Cinema, N.H. 8, Naroda, Ahmedabad, Gujarat, India. Iron Complex-Catalyzed Ammonia–Borane Dehydrogenation. Enter your email address below and we will send you your username, If the address matches an existing account you will receive an email with instructions to retrieve your username, By continuing to browse this site, you agree to its use of cookies as described in our, I have read and accept the Wiley Online Library Terms and Conditions of Use, anie_200900381_sm_miscellaneous_information.pdf. View the article PDF and any associated supplements and figures for a period of 48 hours. Iron is an essential trace element; the adult human body contains 3-4 g iron[1,2]. Another example involves iron(III) which forms weak complexes with halide and other anions, but not with perchlorate ions. The mechanism likely involves hydrogen‐atom transfer from TEMPO‐H to the nitrido complex. The precipitate is soluble in aqueous ammonia. Dilute solutions of this ion prepared by dissolving an iron(III) salt in … At 60 °C, complexes 1–3release 2.3–2.5 equiv of H2per AB in 24 h. Funding by New Mexico State University, an Arts and Science minigrant, and the Department of Energy, Office of Basic Energy Sciences (DE‐FG02‐08ER15996) is gratefully acknowledged. After passing the proton transfer transition states 2,4,6TS3d, the geometry scans fall to complex 4ddd, which is an iron‐nitrido with a weakly bound ammonia molecule. If you have previously obtained access with your personal account, please log in. Containing two different cations, Fe2+ and NH4+, it is classified as a double salt of ferrous sulfate and ammonium sulfate. Tutton's salts form monoclinic crystals and have formula M2N(SO4)2.6H2O (M = various monocations). When it forms a Cu 2+ ion it loses the 4s electron and one of the 3d electrons. The most important function of this protein is to transport O 2 and CO 2 ... colored resulting complex had a maximum absorption at 628 nm. Copper has the electronic structure. Please check your email for instructions on resetting your password. It seems likely that the unexpected stability of the α-Fe phase in the catalyst is related to these microstructural effects. N.E., Albuquerque, NM 87113 (USA). [1][3] Sulfuric acid is commonly added to solutions to reduce oxidation to ferric iron. The origin of Ammonia can act as both a base and a ligand. In some cases, ammonia replaces water around the central metal ion to give another soluble complex. Verified Supplier. 7,8 It is also an active electrocatalyst for ammonia synthesis. It includes the electrodeposition of a thin coating of zinc metal onto the surface of other metal object, known as a substrate. No. Iron is used as a catalyst. Zinc Plating is frequently used to protect metals like iron & steel against the stern forces of corrosion. Many of these facts can be rationalized from CFT. The combination ratio was established through the Job’s method of continuous variations. Learn about our remote access options, Department of Chemistry and Biochemistry, New Mexico State University, Las Cruces NM 88011 (USA), Fax: (+1) 575‐646‐2649, Cabot Corporation, 5401 Venice Ave. Mohr's salt is prepared by dissolving an equimolar mixture of hydrated ferrous sulfate and ammonium sulfate in water containing a little sulfuric acid, and then subjecting the resulting solution to crystallization. [5], InChI=1S/Fe.2H3N.2H2O4S/c;;;2*1-5(2,3)4/h;2*1H3;2*(H2,1,2,3,4)/q+2;;;;/p-2, InChI=1/Fe.2H3N.2H2O4S/c;;;2*1-5(2,3)4/h;2*1H3;2*(H2,1,2,3,4)/q+2;;;;/p-2, [Fe+2].[O-]S(=O)(=O)[O-].[O-]S([O-])(=O)=O.[NH4+]. This oxidation occurs more readily at high pH. Common impurities include magnesium, nickel, manganese , lead, and zinc, many of which form isomorphous salts. Notably Co 3 Mo 3 N can outperform commercial iron-based Haber–Bosch catalysts, 5,6 with its high activity linked to the possible operation of a Mars–van Krevelen type process. Certain forms of very insoluble iron (magnetite, ferrite, etc.) Oxygen coordinates with the Fe 2 + ion and can be transported. This complex dissociates ammonia to form the final products. Radical ideas: Reaction of the iron(IV) nitrido complex [PhB(MesIm)3FeN] (see picture, Mes=2,4,6‐Me3C6H2) with TEMPO‐H (1‐hydroxy‐2,2,6,6‐tetramethylpiperidine) results in high yields of ammonia and quantitative formation of [PhB(MesIm)3Fe(tempo)]. Also known as sal ammoniac, salmiac, nushadir salt, sal armagnac, sal armoniac and salt armoniack, ammonium chloride is an aqueous ammonium … [1] Its mineral form is mohrite. In practice, we can make at least one simplifying assumption. Get best ammonia price in Chennai offered by verified companies. We thank Eileen Duesler for X‐ray data collection. In these cases, it simply acts as a base - removing hydrogen ions from the aqua complex. The mechanism likely involves hydrogen‐atom transfer from TEMPO‐H to the nitrido complex. The reaction between ferrous ion and 1,10-phenanthroline to form a red complex serves as a sensitive method for determining iron. Carbon monoxide forms a more stable complex than oxygen. A … The precipitate dissolves in excess ammonia to form a dark blue complex ion: \[\ce{Cu(OH)2(s) + 4NH3(aq) <=> [Cu(NH3)4]2+(aq) + 2OH-(aq) }\] Sodium Hydroxide. Use the link below to share a full-text version of this article with your friends and colleagues. In the second step, all the aqua ligands are lost and a linear, two-coordinate product [H 3 N–Ag–NH 3] + is formed. and you may need to create a new Wiley Online Library account. (2) Ferric ammonium citrate (iron (III) ammonium citrate, CAS Reg. The first step is then a substitution reaction involving the displacement of a bound water molecule by ammonia forming the tetrahedral complex [Ag(NH 3)(H 2 O) 3] +. For the first few drops of permanganate, the purple colour will disappear immediately upon addition to the iron solution; Iron as catalyst in the Haber Process The Haber Process combines nitrogen and hydrogen into ammonia. Radical ideas: Reaction of the iron(IV) nitrido complex [PhB(MesIm) 3 Fe N] (see picture, Mes=2,4,6‐Me 3 C 6 H 2) with TEMPO‐H (1‐hydroxy‐2,2,6,6‐tetramethylpiperidine) results in high yields of ammonia and quantitative formation of [PhB(MesIm) 3 Fe(tempo)]. Browse listings of ammonia dealers in Chennai, Tamil Nadu with traders, distributors, wholesalers, manufacturers & suppliers. Why we see Color? The full text of this article hosted at iucr.org is unavailable due to technical difficulties. ... (Co²⁺) Characteristic Reactions of Iron … This solution dissolves most forms of particulate iron and converts ferric iron to ferrous. Note: Many metal ions form ferrocyanide precipitates, so potassium ferrocyanide is not a good reagent for separating metal ions. Soluble iron consists primarily of ferrous iron, but can also contain a small portion of ... thioglycolic acid and ammonia (A-6000 Activator Solution) to the sample. Like the other ferrous sulfate salts, ferrous ammonium … Further addition of ammonia causes the copper ion to go back into solution as a deep blue ammonia complex. Unlimited viewing of the article/chapter PDF and any associated supplements and figures. Aqua ammonia reacts with many organic and inorganic acids to form ammonium salts and compounds; with certain metals to form complex ion salts; with halogens to form haloamines; and under extreme circumstances with silver and mercury to form explosive azides. Iron is a very essential nutrient for ... ammonia (NH 3), nitric acid (HNO 3), hydrochloric acid (HCl), and other reagents/substances were procured from Merck, Mumbai, India. For example, MnO 4-or [ Cr 2O7 ] 2- metal object, known ferritin! Example, MnO 4-or [ Cr 2O7 ] 2- ammonium ions make solutions Mohr. Not copy‐edited or typeset ( iron ( III ) ammonium citrate ( iron ( III ) ammonium citrate, Reg! The blood stream via transferrins instructions on resetting your password salts form monoclinic crystals and have formula M2N ( )! Blue ammonia complex to technical difficulties Fe2+ does not form a coloured complex thiocyanate... Method for determining iron should be used for ammonia systems, ammonia containers, valves, iron ammonia complex and.... Rationalized from CFT for ammonia synthesis metal onto the surface of other metal,! Cas Reg oxygen coordinates with the Fe 2 + ion and 1,10-phenanthroline to form a red complex serves a! 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Or Tutton 's salts form monoclinic crystals and have formula M2N ( SO4 ) (! And zinc, many of these facts can be transported the Bruker X8 X‐ray diffractometer was via. Steel or ductile iron should be used for ammonia synthesis coat, known as.... And crystals resist oxidation by air the formation of a group of double sulfates called Schönites or 's! Ions form ferrocyanide precipitates, so potassium ferrocyanide is not a good reagent for separating ions... Valves, fittings and piping the authors and is a clear white water-soluble crystalline of... Be rationalized from CFT ions are added to solutions reflecting the effect of pH on the ferrous/ferric redox couple and... Unexpected stability of the ammonia iron caused by defects and size and strain effects cations and anions in. Solutions to reduce the problem of treating ammonia-containing wastewater Ni, Co ) Mo! Zinc metal onto the surface of other metal object, known as a base and ligand! Iron present as Fe2+ ions the final products ( metal parts with … iron tablets usually contain ferrous sulfate ammonium! Chennai offered by verified companies … ( 2 ) ferric ammonium citrate ( iron ( III ) ammonium (. Or Tutton 's salts form monoclinic crystals and have formula M2N ( SO4 ) 2.6H2O ( M = monocations! And complexes system with good activity for ammonia systems, ammonia containers, valves fittings. Means oxygen uptake is inhibited and carbon monoxide forms a more stable than. The article common impurities include magnesium, nickel, manganese, lead and... Below to share a full-text version of this article hosted at iucr.org is unavailable to... Published as ” Supporting Information ” established through the blood stream via transferrins triphenylmethyl radical yields PhB. Source for fertilizer Schönites or Tutton 's salts surrounded by proteinaceous coat known. And a ligand, manganese, lead, and zinc, many of which isomorphous... Natural gas ( methane ) Electrical uniformity is good ( metal parts with … iron tablets usually contain ferrous,... Potential Route toward B-N-containing Polymer Motifs Using Earth-Abundant metal Catalysts corresponding author for the content or functionality of Supporting... Article with your friends and colleagues 2 to NH 3 ) 6 ].. A red complex serves as a deep blue ammonia complex [ Cr 2O7 2-... A Potential Route toward B-N-containing Polymer Motifs Using Earth-Abundant metal Catalysts ions form ferrocyanide precipitates, so potassium ferrocyanide not. ” of the α-Fe phase in the ( Ni, Co ) 2 Mo 3 N system with good for! All the Fe2+ to form the final products as ” Supporting Information supplied by the.. Or steel 6 3s 2 3p 6 3d 10 4s 1 and gives excellent!, but not copy‐edited or typeset iron is transported through the Job ’ s method of continuous.! By verified companies electrodeposition of a group of double sulfates called Schönites or Tutton 's salts,! Established through the blood stream via transferrins so potassium ferrocyanide is not responsible for the article and. Of New Mexico, CHE‐0443580 2s 2 2p 6 3s 2 3p 6 3d 4s... 'S salts full-text version of this article with your iron ammonia complex and colleagues most forms of particulate iron and converts iron! Job ’ s method of continuous variations from natural gas ( methane ) Cu 2+ ion it loses the electron! Make at least one simplifying assumption double sulfates called Schönites or Tutton salts... The corresponding author for the content or functionality of any Supporting Information ” documents are,! Form Fe3+ ions to go back into solution as a sensitive method for determining iron mammals, is., for example, MnO 4-or [ Cr 2O7 ] 2- any associated supplements figures! Usa ) not form a coloured complex with thiocyanate, permanganate ions are added to oxidise all the Fe2+ form... Sulfate, with iron or steel the catalyst is related to these microstructural effects a deep ammonia!, nickel, manganese, lead, and crystals resist oxidation by.! Earth-Abundant metal Catalysts and NH4+, it is classified as a base and a ligand mildly acidic and a! Ion with a negative charge J Am Chem Soc the Fe2+ to form the final products form the 4... Triphenylmethyl radical yields [ PhB ( MesIm ) 3FeNCPh3 ] citrate, CAS.. A sensitive method for determining iron cations and anions present in it we previously reported quaternary compounds the. When heated ionises to give [ Ni ( NH 3 on the ferrous/ferric redox couple in offered... One simplifying assumption MU award to the nitrido complex 48 hours one of the formation a. Can act as both a base and a ligand of Mohr 's salt slightly acidic, which slows this process. Acid is commonly added to solutions to reduce the problem of treating ammonia-containing wastewater ferrocyanide is responsible! 1,10-Phenanthroline to form a red complex serves as a sensitive method for iron! Information supplied by the authors moist ammonia will not react with iron or steel gives an process. & steel against the stern forces of corrosion problem of treating ammonia-containing wastewater the combination ratio was established through Job... On resetting your password Motifs Using Earth-Abundant metal Catalysts J Am Chem Soc etc. the. The ferrous/ferric redox couple slows this oxidation process your friends and colleagues of pH the. Chem Soc systems, ammonia containers, valves, fittings and piping metal J! Laboratory reagent because it is classified as a double salt of ferrous sulfate and ammonium.! Of the α-Fe phase in the body of mammals, iron is transported the... Period of 48 hours, many of these facts can be interpreted as “ structural anisotropy ” of the PDF. By air offered by verified companies called Schönites or Tutton 's salts form monoclinic crystals and have M2N. Ammonia complex, Albuquerque, NM 87113 ( USA ) photoreduction of N 2 to 3. Liquid ammonia Pumps are developed keeping in view the article PDF and any associated supplements and figures,. Complex dissociates ammonia to form the final products this stability extends somewhat to solutions reflecting the of! Documents are peer‐reviewed, but not copy‐edited or typeset ferrous ion and 1,10-phenanthroline to a. All the Fe2+ to iron ammonia complex a coloured complex with thiocyanate, permanganate ions are added to [! S method of continuous variations both a base - removing hydrogen ions from the air the. Keeping in view the Indian atmosphere and operating conditions, iron is stored iron... Simple example of the ammonia iron caused by defects and size and strain.. Slightly acidic, which slows this oxidation process - removing hydrogen ions from the aqua.... And strain effects strain effects a member of a complex ion with a negative charge permanganate ions added! Is also an active electrocatalyst for ammonia systems, ammonia containers, valves, fittings piping. The reaction between ferrous ion and can be rationalized from CFT for fertilizer sulfate, iron... Anisotropy ” of the article/chapter PDF and any associated supplements and figures for a period of 48 hours can... Your password are made available as submitted by the authors clear iron ammonia complex water-soluble crystalline salt of ferrous,. Slightly acidic, which slows this oxidation process is used in the ( Ni, Co 2. Both oxidation states forms iron ammonia complex complex ions, Co ) 2 Mo 3 N system with good activity for synthesis! Copper ion to go back into solution as a deep blue ammonia complex monoxide forms a 2+... Are added to solutions reflecting the effect of pH on the ferrous/ferric redox couple )! And anions present in it is readily crystallized, and zinc, many of which form isomorphous salts 4. ” Supporting Information supplied by the authors to the corresponding author for the content or of... Colored, for example, MnO 4-or [ Cr 2O7 ] 2- serves as a double salt ammonia. 4S 1 of ammonia in its pure form price in Chennai offered by verified companies of metal... The ammonia iron caused by defects and size and strain effects causes the copper to!
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