近年来,硫脲类金属配合物在配位化学、生物化学、医药等领域的研究一直受到广泛重视。四氢化咪唑-2-硫酮(imdt)又称乙撑硫脲,是乙撑双二硫代氨基甲酸酯类农药的代谢产物。它属于硫酰胺杂环化合物,含-N(H)-C(=S)—=—N=C(—SH)—结构互变活性基团,表现出配位多样性,与金属铜可以形成单核旧0和双核”声。配合物。本文合成了四核Cu(Ⅰ)配合物[Cu4(imdt)9](NO3)4·6H2O,对该配合物进行了元素分析和红外光谱表征,用单晶X-射线衍射测定了晶体结构。
Tetranuclear Cu ( Ⅰ ) complex, Cu, (imdt) ( NO3 ) 4 · 6H2 O ( imdt = 1,3 - imidazolidine - 2 - thione ), was synthesized by a reaction of Cu( NO3 )2with imdt in water, it crystallizes in monoclinic crystal system, space group C2/e (No. 15 ), with a = 3. 1418 (3)nm,b =0.94332(6) nm,e = 2.3027(2) nm,β= 119.773(3)°,V = 5.9236(9) nm^3,Z =4,Mr = 1529.68. mol^-1,Dc. = 1. 715g · cm^-3 ,μ = 1. 815 mm^-1 ,F(000) = 3144, R1 = 0. 028 ,wR2=0. 065. The crystal structure consists of tetranuelear[Cu4 (imdt)9]^4+. cation,in which Cu(Ⅰ) is coordinated with four S atoms from four imdt ligands to form a distorted tetrahedral geometry and imdt ligands exhibit three coordination modes of terminal monodentate S - donating and μ2-S and μ4-S bridging coordination.