Synthesis and characterisation of 1-alkyl-2-imidazoline complexes of noble metals; Crystal structure of trans[PtCl2{N=C(H)N(Et)CH2CH2}(PEt3)]

被引：31

作者：

Cetinkaya, B ^{[1
]}

Cetinkaya, E ^{[1
]}

Hitchcock, PB ^{[1
]}

Lappert, MF ^{[1
]}

Ozdemir, I ^{[1
]}

机构：

[1] UNIV SUSSEX,CHEM LAB,BRIGHTON BN1 9QJ,E SUSSEX,ENGLAND

来源：

JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS | 1997年 / 08期

关键词：

D O I：

10.1039/a608360i

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Treatment of a 1-alkyl-2-imidazoline N(R)(CH2)(2)N=CH with a mu-dichloro-dirhodium(I) or -diplatinum(II) complex [{Rh(mu-Cl)(cod)}(2)] or [{Pt(mu-Cl)Cl(PEt3)}] gave the mononuclear 1-alkyl-2-imidazoline complex [RhCl{N=C(H)N(R)CH2CH2}(cod)] (R = Et la or CH2Ph Ib) or trans-[PtCl2{N=C(H)N(R)CH2CH2}(PEt3)] (R = Et 2a or CH2Ph 2b) (cod = cycloocta-1,5-diene). A single-crystal X-ray diffraction study of 2a revealed it to have a square-planar geometry about platinum, the imidazoline ring being coplanar with this plane, and a Pt-N distance of 2.088(11) Angstrom; the Pt-P bond length of 2.231(4)Angstrom indicates that the imidazoline ligand has a marginally stronger trans influence than analogues of its isomer such as CN(R)(CH2)(2)NR. The rhodium complexes la and Ib have been shown to catalyse cyclopropanation of styrene and ethyl diazoacetate in high yields.

引用

页码：1359 / 1362

页数：4

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