Homobinuclear sulfato-bridged and mononuclear nitrato complexes of Cu(II) with thiophen-2-yl-dipicolylamine; structure and anion-dependent absorption spectra
作者:Joshua R. Zimmerman、Ana de Bettencourt-Dias
DOI:10.1016/j.inoche.2011.02.028
日期:2011.5
b = 17.035, c = 12.425 A, β = 108.72° and V = 2096.17 A3. The structures of 2 and 3 are shown to be stabilized by an extended system of π–π stacking and hydrogen-bonding interactions. Comparison of the electronic absorption spectra of the ligand and complexes shows that complexation is maintained in solution and that the ligand absorption is attenuated in the complexes, depending on the counter-anion
摘要 合成了一种新的配体双吡啶-2-基甲基-噻吩-2-基甲胺,2ThDPA (1),并分离出了其与Cu(II)的配合物。当使用 Cu(NO3)2 作为金属源时,分离出一种具有式 [Cu(1)(NO3)2], 2 的单核配合物,其特征是两个硝基与 Cu 配位双齿。2 在单斜 P21/c 空间群中结晶,a = 14.848, b = 8.212, c = 32.752 A, β = 102.52° 和 V = 3898.3 A3。当使用 CuSO4 作为金属源时,可分离出同双核硫酸根桥络合物,分子式为 [Cu(1)SO4]2·CH3CN, 3. 3 在单斜 P21/n 空间群中结晶,a = 10.457, b = 17.035,c = 12.425 A,β = 108.72°,V = 2096.17 A3。2 和 3 的结构被证明通过 π-π 堆积和氢键相互作用的扩展系统稳定。