EXPERIMENTAL-DETERMINATION OF SINGLE-ION ANISOTROPIES IN 2 NICKEL-COMPLEXES

被引：18

作者：

LANDEE, CP ^{[1
]}

MUDGETT, DM ^{[1
]}

FOXMAN, BM ^{[1
]}

机构：

[1] BRANDEIS UNIV, DEPT CHEM, WALTHAM, MA 02254 USA

来源：

INORGANICA CHIMICA ACTA | 1991年 / 186卷 / 01期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/S0020-1693(00)87929-3

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Motivated by the Haldane conjecture, the powder susceptibilities of two nickel complexes (1: NiCl2L2, with L = P(CH2CH2CN)3; 2: bis(propiolato)tetraaquonickel(II)) have been investigated as part of a search for new S = 1 antiferromagnetic linear chains. The effective moments of both complexes correspond to high-spin S = 1 Ni(II) ions at room temperature but decrease rapidly below 20 K. Analysis of the data showed the decreases to correspond to the effects of single-ion anisotropy and not magnetic exchange. The susceptibilities of 1 and 2 can be described as resulting from single-ion anisotropy parameters D/k = 7 and 8.5 K, respectively, with the m(s) = 0 single state low for both complexes. Neither 1 nor 2 can be considered a magnetic linear chain.

引用

页码：45 / 49

页数：5

共 18 条

[1] HIGH-FIELD MAGNETIZATION OF A QUASI-ONE-DIMENSIONAL S=1 ANTIFERROMAGNET NI(C2H8N2)2NO2(CLO4) - OBSERVATION OF THE HALDANE GAP [J].