Reaction of butadiene with cobalt(II) chloride in the presence of metallic zinc, ethanol, and triphenylphosphine gives the complex anti-π-but-2-enylbutadiene(triphenylphosphine)cobalt, (C4H7)(C4H6)CoPPh3. This is readily isomerized to the syn-isomer by action of PPh3, dimethyl sulphoxide, or pyridine. From isoprene an analogous complex (C5H9)(C5H8)CoPPh3 is obtained. The co-ordinated diolefin is displaced from these complexes by carbon monoxide to give the corresponding dicarbonyl derivatives. N.m.r. data for all of the complexes isolated are reported. Reaction of the complexes (C4H7)(C4H6)CoPPh3 and (C5H9)(C5H8)CoPPh3 with allene, 3-methyl-buta-1,2-diene, and acetylene gives highly crystalline linear polymers.
{"title":"Preparation and properties of a but-2-enyl butadiene complex of cobalt and of an analogous complex from isoprene","authors":"G. Vitulli, L. Porri, A. Segre","doi":"10.1039/J19710003246","DOIUrl":"https://doi.org/10.1039/J19710003246","url":null,"abstract":"Reaction of butadiene with cobalt(II) chloride in the presence of metallic zinc, ethanol, and triphenylphosphine gives the complex anti-π-but-2-enylbutadiene(triphenylphosphine)cobalt, (C4H7)(C4H6)CoPPh3. This is readily isomerized to the syn-isomer by action of PPh3, dimethyl sulphoxide, or pyridine. From isoprene an analogous complex (C5H9)(C5H8)CoPPh3 is obtained. The co-ordinated diolefin is displaced from these complexes by carbon monoxide to give the corresponding dicarbonyl derivatives. N.m.r. data for all of the complexes isolated are reported. Reaction of the complexes (C4H7)(C4H6)CoPPh3 and (C5H9)(C5H8)CoPPh3 with allene, 3-methyl-buta-1,2-diene, and acetylene gives highly crystalline linear polymers.","PeriodicalId":17321,"journal":{"name":"Journal of The Chemical Society A: Inorganic, Physical, Theoretical","volume":"60 1","pages":"3246-3250"},"PeriodicalIF":0.0,"publicationDate":"1971-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78679427","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Magnetic susceptibilities in the temperature range 80—300 K, and electronic spectra of some octahedral and tetrahedral complexes of cobalt(II) chloride and nitrate, and nickel(II) chloride and bromide with 2,3-, 2,4-, 3,4-, and 3,5-lutidine are reported. The magnetic data for the octahedral cobalt(II) and tetrahedral nickel(II) complexes are consistent with structures having axial symmetry.
{"title":"Magnetic and spectroscopic studies of some lutidine complexes of cobalt(II) and nickel(II)","authors":"D. Machin, J. Sullivan","doi":"10.1039/J19710000658","DOIUrl":"https://doi.org/10.1039/J19710000658","url":null,"abstract":"Magnetic susceptibilities in the temperature range 80—300 K, and electronic spectra of some octahedral and tetrahedral complexes of cobalt(II) chloride and nitrate, and nickel(II) chloride and bromide with 2,3-, 2,4-, 3,4-, and 3,5-lutidine are reported. The magnetic data for the octahedral cobalt(II) and tetrahedral nickel(II) complexes are consistent with structures having axial symmetry.","PeriodicalId":17321,"journal":{"name":"Journal of The Chemical Society A: Inorganic, Physical, Theoretical","volume":"57 1","pages":"658-661"},"PeriodicalIF":0.0,"publicationDate":"1971-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76538140","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The i.r. spectra of various (π-ring)M(CO)2X complexes of chromium, manganese, and iron have been investigated in the regions 225–700 and 1850–2100 cm–1. Absorption bands due to vibrations of the (π-ring)M(CO)2 moieties are reported and assigned. Trends in frequencies and relative intensities of those bands which are due largely to the δ(MCO) vibrations are discussed, and shown to depend on the ligand X.
{"title":"Further studies of the metal–carbonyl bending vibrations of (π-ring)M(CO)2X derivatives of the first-row transition metals","authors":"A. R. Manning","doi":"10.1039/J19710000106","DOIUrl":"https://doi.org/10.1039/J19710000106","url":null,"abstract":"The i.r. spectra of various (π-ring)M(CO)2X complexes of chromium, manganese, and iron have been investigated in the regions 225–700 and 1850–2100 cm–1. Absorption bands due to vibrations of the (π-ring)M(CO)2 moieties are reported and assigned. Trends in frequencies and relative intensities of those bands which are due largely to the δ(MCO) vibrations are discussed, and shown to depend on the ligand X.","PeriodicalId":17321,"journal":{"name":"Journal of The Chemical Society A: Inorganic, Physical, Theoretical","volume":"151 1","pages":"106-110"},"PeriodicalIF":0.0,"publicationDate":"1971-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76002541","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The crystal structure of a complex formed from isonitrosoacetophenone and potassium o-nitrophenolate having the formula KC6H4(NO2)OHONCHC(O)C6H5 has been determined. The crystals are monoclinic and have space group P21/c with Z= 4, a= 10·826(4), b= 5·581(3), c= 24·559(10)A, and β= 102°4′(1′). 1557 independent reflections collected on an automatic diffractometer were used to refine the structure by full-matrix least-squares methods to a conventional R of 0·053.The potassium is surrounded by eight electron-rich atoms of the ligands. Seven of these are oxygen atoms and one is the oxime-nitrogen atom. The two ligands may be regarded as chelates; the o-nitrophenol forms a six-membered ring and the isonitrosoacetophenone ligand makes a five-membered ring by the interaction of the potassium ion with the keto-oxygen atom and the oxime-nitrogen atom. Two oxygen atoms from the o-nitrophenolate interact with two symmetry-related potassium ions and thereby form a polymeric sequence parallel to the b-axis. The o-nitrophenolate is connected to the isonitrosoacetophenone by an apparently symmetrical hydrogen bond of length 2·51 A. The dimensions of the o-nitrophenolate ligand indicate a significant contribution of a quinonoid form.
{"title":"Alkali-metal complexes. Part VI. Crystal and molecular structure of a complex formed from isonitrosoacetophenone and potassium o-nitrophenolate","authors":"M. Bush, M. Truter","doi":"10.1039/J19710000745","DOIUrl":"https://doi.org/10.1039/J19710000745","url":null,"abstract":"The crystal structure of a complex formed from isonitrosoacetophenone and potassium o-nitrophenolate having the formula KC6H4(NO2)OHONCHC(O)C6H5 has been determined. The crystals are monoclinic and have space group P21/c with Z= 4, a= 10·826(4), b= 5·581(3), c= 24·559(10)A, and β= 102°4′(1′). 1557 independent reflections collected on an automatic diffractometer were used to refine the structure by full-matrix least-squares methods to a conventional R of 0·053.The potassium is surrounded by eight electron-rich atoms of the ligands. Seven of these are oxygen atoms and one is the oxime-nitrogen atom. The two ligands may be regarded as chelates; the o-nitrophenol forms a six-membered ring and the isonitrosoacetophenone ligand makes a five-membered ring by the interaction of the potassium ion with the keto-oxygen atom and the oxime-nitrogen atom. Two oxygen atoms from the o-nitrophenolate interact with two symmetry-related potassium ions and thereby form a polymeric sequence parallel to the b-axis. The o-nitrophenolate is connected to the isonitrosoacetophenone by an apparently symmetrical hydrogen bond of length 2·51 A. The dimensions of the o-nitrophenolate ligand indicate a significant contribution of a quinonoid form.","PeriodicalId":17321,"journal":{"name":"Journal of The Chemical Society A: Inorganic, Physical, Theoretical","volume":"16 1","pages":"745-750"},"PeriodicalIF":0.0,"publicationDate":"1971-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76009288","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Infrared spectra are reported for Fe3(CO)12, Ru3(CO)12, Os3(CO)12, and Ru3(CO)10(NO)2 in argon and nitrogen matrices at 20 K. There are strong similarities between the matrix and solution spectrum of Ru3(CO)12, or Os3(CO)12, or Ru3(CO)10(NO)2 and it appears that for M3(CO)12(M = Ru, Os) the isolated molecules are somewhat distorted from an idealized D3h symmetry, with greater distortions in argon than in nitrogen. The matrix spectrum of Fe3(CO)12 is completely different from the solution spectrum and indicates that the isolated molecule has the doubly bridged C2v structure observed in the solid. The results strengthen the hypothesis that Fe3(CO)12 is present in solution with a structure different from that in the solid.
{"title":"Infrared spectra of trimetal dodecacarbonyl species in frozen gas matrices at 20 K","authors":"M. Poliakoff, J. J. Turner","doi":"10.1039/J19710000654","DOIUrl":"https://doi.org/10.1039/J19710000654","url":null,"abstract":"Infrared spectra are reported for Fe3(CO)12, Ru3(CO)12, Os3(CO)12, and Ru3(CO)10(NO)2 in argon and nitrogen matrices at 20 K. There are strong similarities between the matrix and solution spectrum of Ru3(CO)12, or Os3(CO)12, or Ru3(CO)10(NO)2 and it appears that for M3(CO)12(M = Ru, Os) the isolated molecules are somewhat distorted from an idealized D3h symmetry, with greater distortions in argon than in nitrogen. The matrix spectrum of Fe3(CO)12 is completely different from the solution spectrum and indicates that the isolated molecule has the doubly bridged C2v structure observed in the solid. The results strengthen the hypothesis that Fe3(CO)12 is present in solution with a structure different from that in the solid.","PeriodicalId":17321,"journal":{"name":"Journal of The Chemical Society A: Inorganic, Physical, Theoretical","volume":"100 1","pages":"654-658"},"PeriodicalIF":0.0,"publicationDate":"1971-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76250983","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
1,5-Di-(2-hydroxyphenyl)- and 1-(2-hydroxyphenyl)-5-(2-carboxyphenyl)-3-substituted formazans react with both cupric acetate and cuprous chloride in methanol to give square planar copper(II) complexes. In contrast, under comparable conditions, 1,5-di-(2-carboxyphenyl)-3-substituted formazans give copper(II) complexes containing two molecules of water, which are probably octahedral. With cupric chloride in methanol two competing reactions occur, metal complex formation and oxidation of the formazan to tetrazolium salt. The relative importance of these reactions is governed by the substituents on the formazan.
{"title":"Metal complex formazans. Part II. The reaction of copper salts with certain tetradentate formazans","authors":"R. Price","doi":"10.1039/J19710003385","DOIUrl":"https://doi.org/10.1039/J19710003385","url":null,"abstract":"1,5-Di-(2-hydroxyphenyl)- and 1-(2-hydroxyphenyl)-5-(2-carboxyphenyl)-3-substituted formazans react with both cupric acetate and cuprous chloride in methanol to give square planar copper(II) complexes. In contrast, under comparable conditions, 1,5-di-(2-carboxyphenyl)-3-substituted formazans give copper(II) complexes containing two molecules of water, which are probably octahedral. With cupric chloride in methanol two competing reactions occur, metal complex formation and oxidation of the formazan to tetrazolium salt. The relative importance of these reactions is governed by the substituents on the formazan.","PeriodicalId":17321,"journal":{"name":"Journal of The Chemical Society A: Inorganic, Physical, Theoretical","volume":"16 1","pages":"3385-3388"},"PeriodicalIF":0.0,"publicationDate":"1971-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87847433","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Compounds of MnII, CoII, NiII, CuII and ZnII of the type M(chelate)X2[where chelate =NN′-di-(3-aminopropyl)piperazine; X = one of a variety of anions] are reported. Square-pyramidal five-co-ordinate cations in the compounds [M(chelate)X]X and [M(chelate)X]Y are characterised for the following: where M = CoII, X = Br and I; where M = NiII, X = Cl, Br and possibly NCS; and where M = CuII, X = Cl, Br, I, NCS, and Y = ClO4, PF6. In addition, a five-co-ordinate species Cu(chelate)Cl2 in which the ligand is only terdentate with a free NH2, also is characterised. Four co-ordinate planar [MN4]2+ species also are characterised for NiII, CuII and perhaps CoII. No significant structural data is available for the MnII, FeII, or ZnII species. The structural assignments for the solid compounds rely on X-ray data (powder-pattern correlations with a known three-dimensional structure), i.r. and electronic spectra, and magnetic measurements. Structural studies of solutions in non-aqueous solvents also are reported. These rely on electronic spectra. Specific ion-pairing limits the use of conductivity data. The origin of the five-co-ordinate structures in these compounds is discussed in terms of the peculiar steric effects of the ligand, which is the precursor of a class of homologous ligands, each of which is expected to give five-co-ordinate compounds of these metals.
M(螯合物)X2型MnII、CoII、NiII、CuII和ZnII化合物[其中螯合物=NN′-二-(3-氨基丙基)哌嗪;X =多种阴离子中的一种]。化合物[M(螯合物)X]X和[M(螯合物)X]Y中的方-锥体五坐标阳离子的特征如下:其中M = CoII, X = Br和I;其中M = NiII, X = Cl, Br和可能的NCS;其中M = CuII, X = Cl, Br, I, NCS, Y = ClO4, PF6。此外，还有一种五配位的Cu(螯合)Cl2，其配体仅与游离NH2三齿合。四个坐标平面[MN4]2+物种也具有NiII, CuII和CoII的特征。没有关于MnII、FeII和ZnII种的重要结构数据。固体化合物的结构分配依赖于x射线数据(粉末模式与已知三维结构的相关性)、红外光谱和电子光谱以及磁测量。非水溶剂中溶液的结构研究也有报道。这些依赖于电子光谱。特定离子配对限制了电导率数据的使用。根据配体的特殊空间效应讨论了这些化合物中五配位结构的起源，配体是一类同源配体的前体，每一类同源配体都有望得到这些金属的五配位化合物。
{"title":"Steric effects and five-co-ordination in first-row transition-metal compounds. Compounds with a linear tetra-amine ligand","authors":"J. G. Gibson, E. Mckenzie","doi":"10.1039/J19710001029","DOIUrl":"https://doi.org/10.1039/J19710001029","url":null,"abstract":"Compounds of MnII, CoII, NiII, CuII and ZnII of the type M(chelate)X2[where chelate =NN′-di-(3-aminopropyl)piperazine; X = one of a variety of anions] are reported. Square-pyramidal five-co-ordinate cations in the compounds [M(chelate)X]X and [M(chelate)X]Y are characterised for the following: where M = CoII, X = Br and I; where M = NiII, X = Cl, Br and possibly NCS; and where M = CuII, X = Cl, Br, I, NCS, and Y = ClO4, PF6. In addition, a five-co-ordinate species Cu(chelate)Cl2 in which the ligand is only terdentate with a free NH2, also is characterised. Four co-ordinate planar [MN4]2+ species also are characterised for NiII, CuII and perhaps CoII. No significant structural data is available for the MnII, FeII, or ZnII species. The structural assignments for the solid compounds rely on X-ray data (powder-pattern correlations with a known three-dimensional structure), i.r. and electronic spectra, and magnetic measurements. Structural studies of solutions in non-aqueous solvents also are reported. These rely on electronic spectra. Specific ion-pairing limits the use of conductivity data. The origin of the five-co-ordinate structures in these compounds is discussed in terms of the peculiar steric effects of the ligand, which is the precursor of a class of homologous ligands, each of which is expected to give five-co-ordinate compounds of these metals.","PeriodicalId":17321,"journal":{"name":"Journal of The Chemical Society A: Inorganic, Physical, Theoretical","volume":"9 1","pages":"1029-1038"},"PeriodicalIF":0.0,"publicationDate":"1971-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87159578","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The 121Sb Mossbauer spectra of a number of chloroantimony salts have been examined. The presence of both SbIII and SbV in Rb2SbCl6 is confirmed. Extremely large, negative isomer shifts are obtained for [SbIIICl6]3– species and are interpreted in terms of a stereochemically inactive Ione-pair of electrons.
{"title":"Antimony-121 Mössbauer spectroscopy of some chloro-complexes of antimony","authors":"T. Birchall, B. Valle, E. Martineau, J. Milne","doi":"10.1039/J19710001855","DOIUrl":"https://doi.org/10.1039/J19710001855","url":null,"abstract":"The 121Sb Mossbauer spectra of a number of chloroantimony salts have been examined. The presence of both SbIII and SbV in Rb2SbCl6 is confirmed. Extremely large, negative isomer shifts are obtained for [SbIIICl6]3– species and are interpreted in terms of a stereochemically inactive Ione-pair of electrons.","PeriodicalId":17321,"journal":{"name":"Journal of The Chemical Society A: Inorganic, Physical, Theoretical","volume":"38 1","pages":"1855-1857"},"PeriodicalIF":0.0,"publicationDate":"1971-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87652347","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The polarised single-crystal electronic spectra and e.s.r. spectra of thiocyanatotriethylenetetraminecopper(II) thiocyanate have been measured. The correlation of the single-crystal g-values and the crystallographic data suggest a dxy ground-state for the approximately square-pyramidal CuN4S chromophore present. The electronic spectra are interpreted in C2v effective symmetry and yield a tentative partial one-electron orbital sequence: dxy > dz2 > dxz′≈dyz. The concept of varying tetragonal distortion, introduced to discuss the stereochemistry of six-co-ordinate copper(II) complexes, is extended to cover a five-co-ordinate square-pyramidal stereochemistry.
{"title":"Single-crystal electronic and electron spin resonance spectra of thiocyanatotriethylenetetraminecopper(II) thiocyanate","authors":"R. J. Dudley, B. Hathaway","doi":"10.1039/J19710001442","DOIUrl":"https://doi.org/10.1039/J19710001442","url":null,"abstract":"The polarised single-crystal electronic spectra and e.s.r. spectra of thiocyanatotriethylenetetraminecopper(II) thiocyanate have been measured. The correlation of the single-crystal g-values and the crystallographic data suggest a dxy ground-state for the approximately square-pyramidal CuN4S chromophore present. The electronic spectra are interpreted in C2v effective symmetry and yield a tentative partial one-electron orbital sequence: dxy > dz2 > dxz′≈dyz. The concept of varying tetragonal distortion, introduced to discuss the stereochemistry of six-co-ordinate copper(II) complexes, is extended to cover a five-co-ordinate square-pyramidal stereochemistry.","PeriodicalId":17321,"journal":{"name":"Journal of The Chemical Society A: Inorganic, Physical, Theoretical","volume":"5 1","pages":"1442-1445"},"PeriodicalIF":0.0,"publicationDate":"1971-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87897891","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Various complexes of the types [(R3M)Fe(CO)2(NO)L]. [R = Ph, Me, Et, Bun, Cl, or Br; M = Ge, Sn, or Pb; L = CO, Ph3P, (PhO)3P, or PhEt2As] and [(Ph2M){Fe(CO)2(NO)L}2][M = Sn or Pb; L = CO, (PhO)3P, or PhEt2As] are described, and a new method of preparing compounds containing transition metal to tin bonds is reported. On the basis of their i.r. spectra, it is suggested that these compounds have trigonal bipyramidal coordination about the iron atom, and a linear M–Fe–L system. When R3M is Ph2ClSn or PhCl2Sn, or L is PhEt2As isomerism is observed owing to restricted rotation about the Fe–Sn or Fe–As bond. In solution in acetonitrile [(Ph3M)Fe(CO)3(NO)] and [(Ph2M){Fe(CO)3(NO)}2](M = Sn or Pb) dissociate completely, and reversibly to give the [Fe(CO)3(NO)]– ion.
{"title":"Preparation and infrared spectra of some Group IV metal–tricarbonylnitrosyliron derivatives","authors":"M. Casey, A. R. Manning","doi":"10.1039/J19710000256","DOIUrl":"https://doi.org/10.1039/J19710000256","url":null,"abstract":"Various complexes of the types [(R3M)Fe(CO)2(NO)L]. [R = Ph, Me, Et, Bun, Cl, or Br; M = Ge, Sn, or Pb; L = CO, Ph3P, (PhO)3P, or PhEt2As] and [(Ph2M){Fe(CO)2(NO)L}2][M = Sn or Pb; L = CO, (PhO)3P, or PhEt2As] are described, and a new method of preparing compounds containing transition metal to tin bonds is reported. On the basis of their i.r. spectra, it is suggested that these compounds have trigonal bipyramidal coordination about the iron atom, and a linear M–Fe–L system. When R3M is Ph2ClSn or PhCl2Sn, or L is PhEt2As isomerism is observed owing to restricted rotation about the Fe–Sn or Fe–As bond. In solution in acetonitrile [(Ph3M)Fe(CO)3(NO)] and [(Ph2M){Fe(CO)3(NO)}2](M = Sn or Pb) dissociate completely, and reversibly to give the [Fe(CO)3(NO)]– ion.","PeriodicalId":17321,"journal":{"name":"Journal of The Chemical Society A: Inorganic, Physical, Theoretical","volume":"112 1","pages":"256-259"},"PeriodicalIF":0.0,"publicationDate":"1971-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86219130","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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