Syntheses and mesomorphic properties of gold(I)-carbene complexes

被引：29

作者：

Zhang, SW ^{[1
]}

Ishii, R ^{[1
]}

Takahashi, S ^{[1
]}

机构：

[1] OSAKA UNIV,INST SCI & IND RES,IBARAKI,OSAKA 567,JAPAN

来源：

ORGANOMETALLICS | 1997年 / 16卷 / 01期

关键词：

D O I：

10.1021/om9606202

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The liquid-crystalline gold(I)-carbene complexes ClAu=C(YCmH2m+1)(NHC6H4CO2C6H4OCnH2n+1), Y = O and NH, have been prepared by reactions of gold(I)-isonitrile complexes [ClAu{CNC6H4CO2C6H4OCnH2n+1}] with alcohols and amines, respectively. The gold(I)-(alkoxy)(amino)carbene complexes show stable enantiotropic smectic A phases over the range of around 15 degrees C. The partial double-bond character of the C-N bond in the carbene complex gives rise to two geometrical isomers (E:Z = ca. 3:1). Their molecular structures were spectroscopically characterized, and the E-isomer was confirmed by an X-ray structural analysis. The phase behaviors of E- and Z-isomers which were isolated by repeated recrystallization from CHCl3/Et(2)O or CH2Cl2/C6H14 were examined. In the gold(I)-diaminocarbene complexes, a novel dinuclear gold-carbene complex, [ClAu{C(NHC6H4CO2C6H4OCnH2n+1)}](NCH3CmH2mNCH3)[ClAu{C(NHC6H4CO2C6H4OCnH2n+1)}], was synthesized by the reaction with a secondary diamine. This dinuclear complex generated a smectic mesophase although it decomposed at temperatures below its clearing temperature.

引用

页码：20 / 26

页数：7

共 34 条

[1] SYNTHESIS AND PHASE-BEHAVIOR OF MESOMORPHIC TRANSITION-METAL COMPLEXES OF ALKOXYDITHIOBENZOATES - CRYSTAL AND MOLECULAR-STRUCTURE OF 3 METAL ALKOXYDITHIOBENZOATES [J].