synthesized. It forms cobalt(II) and copper(II) complexes of the general formula [M2(L)(X)](BPh4)2·n(acetone) (M=Co, Cu; X=CH3COO−, N3−; n=0–3), where two metal ions are bridged by the endogenous pyrazolate group and the exogenous X group. Electronic spectra of the cobalt(II) and copper(II) complexes suggest a trigonal-bipyramidal configuration around each metal ion. Magnetic properties have been examined over
合成了一种新的双核
吡唑配体3,5-双N,N-双[2-(
二乙基氨基)乙基]
氨基甲基}
吡唑(HL)。它形成通式为[M2(L)(X)](BPh4)2·n(
丙酮)的
钴(II)和
铜(II)配合物(M = Co,Cu; X = CH3COO-,N3--; n = 0–3),其中两个
金属离子被内源性
吡唑酸酯基团和外源性X基团桥接。
钴(II)和
铜(II)配合物的电子光谱表明,每个
金属离子周围都具有三角形-双锥体的构型。在75–300 K的温度范围内检查了磁性能。
钴(II)配合物[Co2(L)(CH3COO)](BPh4)2·
丙酮和[Co2(L)(N3)](BPh4)2· 2
丙酮随温度降低均显示出磁矩的轻微增加(分别从300 K时的4.03和3.94μB到85 K时的4.16和4.08μB)。[Cu2(L)(CH3COO)](BPh4)2显示弱的反
铁磁自旋耦合(基于自旋哈密顿量H =-2JŜ1·Ŝ2,J =