Spin crossover in bis(2,6-bis(benzimidazol-2yl)pyridine)iron(II) tetraphenylborate

被引：39

作者：

Boca, R ^{[1
]}

Baran, P

Boca, M

Dlhan, L

Fuess, H

Haase, W

Linert, W

Papankova, B

Werner, R

机构：

[1] Slovak Univ Technol Bratislava, Dept Inorgan Chem, SK-81237 Bratislava, Slovakia

[2] Tech Univ Darmstadt, Inst Mat Sci, Inst Chem Phys, D-64289 Darmstadt, Germany

[3] Vienna Univ Technol, Inst Inorgan Chem, A-1060 Vienna, Austria

来源：

INORGANICA CHIMICA ACTA | 1998年 / 278卷 / 02期

基金：

奥地利科学基金会;

关键词：

magnetism; iron complexes; spin crossover; imidazol-pyridine complexes;

D O I：

10.1016/S0020-1693(98)00023-1

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The complex [Fe(bzimpy)(2)]( BPh4)(2). nH(2)O exists with n = 4 (1), n = 2 (2) and n = 0 (3). The tetrahydrate is a spin crossover system with the transition centred at room temperature. The dihydrate, prepared from a solution with reduced water content, is a high-spin complex over the entire temperature region. The anhydrous complex, prepared by overheating of 1, remains high-spin. Unlike that in the sulphate (4) and perchlorate (5) analogues, the spin crossover in 1 is complete. The magnetic data fitting procedure yields the set of magnetic parameters describing the spin crossover quantitatively: g = 2.54, J/k = - 226 K, Delta H = 14.9 kJ mol(-1) and Delta S = 45 J K-1 mol(-1). (C) 1998 Elsevier Science S.A. All rights reserved.

引用

页码：190 / 196

页数：7

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