Spin frustration in the butterfly-like tetrameric [Ni4(μ-CO3)2(aetpy)8][ClO4]4 [aetpy = (2-aminoethyl)pyridine] complex.: Structure and magnetic properties

被引：34
作者：
Escuer, A
Vicente, R
Kumar, SB
Mautner, FA
机构：
[1] Univ Barcelona, Dept Quim Inorgan, E-08028 Barcelona, Spain
[2] Graz Tech Univ, Inst Phys & Theoret Chem, A-8010 Graz, Austria
来源：
JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS | 1998年 / 20期
关键词：
D O I：
10.1039/a803780i
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
A new tetranuclear nickel compound, showing mu-CO3 bridges and butterfly topology has been synthesised and structurally characterised. The complex [Ni-4(mu-CO3)(2)(aetpy)(8)][ClO4](4), where aetpy corresponds to (2-aminoethyl)pyridine, crystallises in the tetragonal system, space group P4(2)2(1)2 (no. 94), a = 14.523(4), c = 16.566(5) Angstrom and Z = 8. Magnetic measurements show an overall antiferromagnetic behaviour with a quasi-degenerate set of spin levels S = 0, S = 1 and S = 2 as a ground state, which may be rationalised in terms of a spin frustration system.
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页码：3473 / 3477
页数：5
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