Read e-book online Organometallic Compounds: Volume Two. The Transition PDF

By G. E. Coates M.A., D.Sc., F.R.I.C., M. L. H. Green Ph.D., M.A., K. Wade B.Sc., Ph.D. (auth.)

to thank Messrs J. R. Sanders, W. E. Lindsell and M. G. Swanwick for supporting to examine the textual content and references and get ready indexes. eventually, I may still prefer to thank my spouse for the very huge assis­ tance she has given me within the writing and construction of this ebook. M. L. H. G. Contents Preface to the 3rd version, quantity web page v advent TO quantity I Oassification I The IS-electron rule 2 (i) the root of the I8-electron rule p. four, (ii) Exceptions to the I8-electron rule p. five 1. TWO-ELECTRON LIGANDS 7 A. class 7 B. The education of olefin-transition steel complexes 7 (a) Displacement of solvent ligands p. nine, (b) arrangements from steel carbonyls p. nine, (c) much less universal preparative routes p. eleven, Reductive olefination procedure p. 12 C. A molecular orbital description of the bonding in orga- steel complexes thirteen (a) normal reviews p. thirteen, (b) Symmetry concerns p. thirteen, (c) Energies of the molecular orbitals p. 14 D. an outline of the bonding of 2-electron ligands to transition metals 14 E. basic reviews of 2-electron ligands 19 (a) Infrared reports p. 20, (b) impact of olefin substituents p. 21, (c) The rotation of ethylene concerning the ligand-metal bond p. 22, (d) Chemical homes p. 23 F. specific complexes of metals with 2-electron ligands 25 (a) Copper, silver and gold p. 25, Complexes with benzene p. 28, (b) Nickel, palladium and platinum p.

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The chemistry of particular 7t-enyl complexes A variety of the known n-enyl complexes is shown in Tables 5 and 6. pt/mrn. Hg References fT-enyl carbonyls 7T-allyl Mn(CO). Ni-1T-C,H, 1T-allyl Pd-1T-C,H, Red Red Red Dark red 1T-cycIohexenyl Pd-1T-C,Hs [1T-cycIoheptadienyl PdCI]z 1T-allyI Pt -1T-C ,H s Red Yellow Lemon-yellow 69/80° d 63-64° [41] Yellow brown -dark brown Orange Orange 85-89° [18, 17] Yellow Yellow Yellow Yellow Yellow 74-75° 1Wd 40° /0'05 mm. - 65° d 110° d [52,45] [8] [53] [21] [54] 1T-enyl-1T-cyclopentadienyl halides 7T-allyl CO-1T-CsHsI 7T-allyl CO-1T-C,HsBr Dark red Red 95'5-97" 96-98° [16] [16] (a) Classified by other ligands attached to the metal.

D. Gel'man, Complex compounds ofplatinum with unsaturated molecules, Soviet Acad. , Moscow, 1945. [93] O. E. Zvyagintsev and E. F. Karandasheva, Doklady Akad. , 1955,101,93. [94] R. J. Goodfellow and L. M. Venanzi, personal communication. [940] P. Corradini, G. Paiaro, A. Panunzi, S. F. Mason and G. H. Searle, J. Amer. Chem. , 1966,88,2863, and A. Panunzi and G. , p. 4843. [94b] G. Paiaro, A. Panunzi and A. De Renzi, Tetrahedron Letters, 1966,3905, and A. Panunzi, R. Palumbo, C. Pedone and G. Paiaro, J.

P3 and, beneath them, are the metal orbitals with which they are most likely to interact to give substantial metal-allyl bonding. The metal lies along the vertical axis, below the C3-plane. 46 ORGANOMETALLIC COMPOUNDS: II is very low, and symmetry arguments alone are of little assistance since, as shown in Table 4, there are a very large number of possible combinations between the ligand and metal orbitals. Table 4 Classification of ligand and metal orbitals 0/1T-C1H sM system according to the symmetry group CS.

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