π-Allylmetal chemistry.IV. Structures and equilibria in Crotylplatinum(II) complexes期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

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π-Allylmetal chemistry.IV. Structures and equilibria in Crotylplatinum(II) complexes

Authors:	Hideo Kurosawa Gohei Yoshida

Institution:	Department of Petroleum Chemistry, Osaka University, Suita, Osaka Japan

Abstract:	Simple methods to prepare crotylplatinum(II) complexes of the type, Pt(CH₂CHCHMe)Cl(PPh₃)₂ and Pt(CH₂CHCHMe)C1L (L PPh₃, AsPh₃), are described. ¹H NMR and vibrational spectral evidence suggests that the σ-allylic form is the dominant species in a benzene solution of Pt(CH₂CHCHMe)Cl(PPh₃)₂, while in chloroform this compound has the ionic α-allyl structure with both the anti and syn-methyl isomers present. Various rate processes exhibited by Pt(CH₂CHCHMe)C1L₂ (L PPh₃ , AsPh₃) in different solvents have been discussed in terms of the structures of intermediate σ-allylic complexes and the different coordinating abilities of L.

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