Synthesis and crystal structure of the 1-dimensional dihalide-bridged polymers: dichlorobis(thiazole)iron(II) and dibromobis(thiazole)copper(II)
摘要:
The new polymeric compound Fe(thiazole)(2)Cl-2 (1) has been synthesised by the addition of thiazole to an ethanolic solution of anhydrous FeCl2. The structure of Cu(tz)(2)Br-2 (2) has also been determined. The structures of both polymers consist of pseudo-octahedral units, doubly linked by halide-bridges to form infinite linear chains. Slight variation in the bonding of the two are observed, relating to the Jahn-Teller nature of Cu2+. Room temperature magnetic susceptibility measurements of 1 give an effective moment of 5.51(2) B.M., indicating high-spin Fe(II). (C) 1998 Elsevier Science Ltd. All rights reserved.
The metamagnetic behaviour of the one-dimensional dihalide-bridged polymer dichlorobis(thiazole)iron(II)
作者:M. James
DOI:10.1016/s0022-3697(00)00069-x
日期:2000.11
Abstract The magnetic properties for the polymeric compound Fe(thiazole) 2 Cl 2 ( 1 ) have been measured as a function of temperature and magnetic field. Variation of the magnetic field at 5 K between 0 and 10 kG reveals a metamagnetic transition between antiferromagnetic and ferromagnetic states. The low temperature magnetic susceptibilities have been fitted to a one-dimensional Ising model with a mean
摘要 高分子化合物 Fe(thiazole) 2 Cl 2 ( 1 ) 的磁性已被测量为温度和磁场的函数。5 K 处的磁场在 0 到 10 kG 之间的变化揭示了反铁磁态和铁磁态之间的变磁转变。低温磁化率已被拟合到具有平均场校正的一维 Ising 模型,并且被发现具有高度各向异性,具有沿 b 轴的铁磁链内相互作用 (J ∥ /k=33.0(1) K ) 和较弱的反铁磁链间相互作用(z'J'/k=-0.3(1) K)。