Structure and physical properties of (n-Bu4N)2 [Au(dcbdt)2]5

被引：20

作者：

Alves, H ^{[1
]}

Simao, D

Lopes, EB

Belo, D

Gama, V

Duarte, MT

Novais, H

Henriques, RT

Almeida, M

机构：

[1] Inst Tecnol & Nucl, Dept Quim, P-2686953 Sacavem, Portugal

[2] Univ Tecn Lisboa, Dept Engn Quim, Inst Super Tecn, P-1049001 Lisbon, Portugal

来源：

SYNTHETIC METALS | 2001年 / 120卷 / 1-3期

关键词：

organic conductors based on radical anion salts; electrochemical methods; electrical transport; magnetic susceptibility;

D O I：

10.1016/S0379-6779(00)00980-2

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

[(n-Bu)(4)N](2) [Au(dcbdt)(2)](5) was obtained as brown thin plate shaped crystals by electrochemical oxidation of (n-Bu)(4)N [Au(dcbdt)(2)], a Au complex with 4,5-dicyanobenzene-1,2-dithiolate (dcbdt) recently prepared. Cyclic voltammetry and optical spectroscopy studies indicate a mixed valence state. The crystal structure is triclinic and presents slightly pentamerised segregated stacks of the complex along (1,2,0). Single crystal electrical conductivity (sigma (RT)similar to 10 S/cm, Ea=13.5 meV) and thermopower measurements (S-RT=-6 mu V/K) suggest a degenerate semiconducting behaviour. The static susceptibility measurements give an almost temperature independent paramagnetic value of 3.5x10(-4) emu/mol. These and EPR results are discussed in relation to the crystal structure.

引用

页码：1011 / 1012

页数：2