SYNTHESIS, CRYSTAL-STRUCTURE AND REACTIONS OF ZEROVALENT 16-ELECTRON BIS(ETA-CYCLOHEPTATRIENE)ZIRCONIUM

被引：15

作者：

GREEN, JC

GREEN, MLH

WALKER, NM

机构：

来源：

JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS | 1991年 / 02期

关键词：

D O I：

10.1039/dt9910000173

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Reduction of ZrCl4 with sodium amalgam in the presence of cycloheptatriene gives the crystallographically identified [Zr(eta-6-C7H8)2] 1 which exhibits a non-parallel arrangement of the cycloheptatrienyl ligands. This reacts with PMe3 or 1,2-bis (dimethylphosphino)ethane (dmpe) to yield [Zr(eta-7-C7H7)(eta-5-C7H9)(PMe3)] 2 and [{Zr(eta-7-C7H7) (eta-5-C7H9)}2(dmpe)] 3 respectively. Treatment of compound 1 with (AlEt2Cl)2 in tetrahydrofuran (thf) yields [{Zr(eta-7-C7H7)(thf)(mu-Cl)-2] 4 which reacts with N,N,N',N'-tetramethylethylenediamine, PMe3, dmpe and 1,2-dimethoxyethane to produce [Zr(eta-7-C7H7)(Me2NCH2CH2NME2)Cl] 5, [Zr(eta-7-C7H7) (PMe3)2Cl] 6, [Zr(eta-7-C7H7)(dmpe)Cl] 7 and [Zr(eta-7-C7H7)(MeOCH2CH2OMe)Cl] 8, respectively. The electronic structures of 1 and [Zr(eta-7-C7H7)(eta-5-C7H9)] 11 have been investigated by photoelectron spectroscopy and extended-Huckel molecular-orbital calculations.

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页码：173 / 180

页数：8

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