Magnetic and optical characterization of one-dimensional isostructural sigma-bonded tetracyanoquinodimethanido complexes of nickel(II) and copper(II)

被引：31

作者：

Azcondo, MT

Ballester, L

Gutierrez, A

Perpinan, MF

Amador, U

RuizValero, C

Bellitto, C

机构：

[1] UNIV COMPLUTENSE MADRID,FAC CIENCIAS QUIM,DEPT QUIM INORGAN,E-28040 MADRID,SPAIN

[2] UNIV COMPLUTENSE MADRID,FAC CIENCIAS QUIM,LAB DIFRACC RAYOS X,E-28040 MADRID,SPAIN

[3] CSIC,INST CIENCIA MAT,SEDE D,E-28006 MADRID,SPAIN

[4] CNR,IST CHIM MAT,AREA RIC ROMA,I-00015 MONTEROTONDO,ROMA,ITALY

来源：

JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS | 1996年 / 14期

关键词：

D O I：

10.1039/dt9960003015

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The complex [CuL(tcnq)(2)] [L = 3,10-bis(2-hydroxyethyl-1,3,5,8,10,12-hexaazacyclotetradecane); tcnq = 7,7,8,8-tetracyanoquinodimethane] has been prepared and crystallographically characterized. Its structure consists of linear chains of alternating copper-macrocycle and tetracyanoquinodimethanide dimers sigma bonded to the copper atoms through a nitrile group. The compound is an insulator. The magnetic properties of both the copper and corresponding nickel compounds are the sums of the contributions arising from the transition-metal ion in octahedral symmetry and of (tcnq)(2)(2-) dimers. The magnetic data were fitted by a model which accounts for contributions from independent Curie spins for the cation and a thermally activated triplet state for the dimerized anions. No magnetic interactions between the metal ion and tcnq's have been observed, even at low temperatures.

引用

页码：3015 / 3019

页数：5

共 35 条

[1] TETRACYANOQUINODIMETHANE DERIVATIVES OF MACROCYCLIC NICKEL(II) COMPLEXES - SYNTHESIS AND CRYSTAL-STRUCTURE OF BIS(7,7,8,8-TETRACYANOQUINODIMETHANIDO)(1,8-BIS(2-HYDROXYETHYL)-1,3,6,8,10,13-HEXAAZACYCLOTETRADECANE)NICKEL(II) [J].