Divalent metal complexes (Ca, Sr, Ba, Yb) of the unsymmetrical 3-(2′-thienyl)-5-(trifluoromethyl)pyrazolate ligand

被引：11

作者：

Deacon, Glen B. ^{[1
]}

Junk, Peter C. ^{[1
]}

Urbatsch, Aron ^{[1
]}

机构：

[1] Monash Univ, Sch Chem, Clayton, Vic 3800, Australia

来源：

DALTON TRANSACTIONS | 2011年 / 40卷 / 07期

基金：

澳大利亚研究理事会;

关键词：

X-RAY STRUCTURES; ALKALINE-EARTH; ARYLOXO-LANTHANOIDS; ORGANOAMIDO-LANTHANOIDS; CRYSTAL-STRUCTURES; ORGANOMETALLIC COMPOUNDS; REDOX TRANSMETALATION; COORDINATION MODES; STRUCTURAL TRENDS; CALCIUM;

D O I：

10.1039/c0dt01289k

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The divalent complexes [M(ttfpz)(2)(thf)(4)] (ttfpz = 3-(2'-thienyl)-5-(trifluoromethyl)pyrazolate; M = Yb, 1, Ca, 2, Sr, 3, Ba, 4; thf = tetrahydrofuran)and [M(ttfpz)(2)(dme)(n)] (M = Ca, 5, Sr, 6, Yb, 7, n = 2; M = Ba, 8, n = 3; dme = 1,2-dimethoxyethane)have been prepared by redox transmetallation/protolysis reactions employing the free metals, Hg(C6F5)(2) and ttfpzH in donor solvents and their structures determined. The monomeric structures exhibit eta(2)-bound pyrazolate ligands with eight-coordinate metal atoms for complexes 1-7 and a ten-coordinate metal for 8. The pyrazolate ligands in the thf-complexes 1-4 as well as dme-derivatives 5 and 6 are in a transoid configuration, whilst in complex 7 the ttfpz ligands exhibit a cisoid relationship. In 8 the ligands have an intermediate role in between cisoid and transoid.

引用

页码：1601 / 1609

页数：9

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