含吡咯配体的铜(Ⅱ)配合物的合成、结构及吡咯环的非预期碘代

Synthesis and Structure of a Copper(Ⅱ) Complex of a Pyrrole-Containing Ligand and Unanticipated Iodination of the Pyrrole Ring

在甲醇溶液中,以三乙基胺作为碱,配体HL^(1)和四氟合硼酸铜(Ⅱ)及碘化钾反应,合成了铜(Ⅱ)配合物[L^(1a) CuI]。对配合物用红外光谱、紫外-可见光谱、单晶X-射线衍射等手段进行了表征。X-射线晶体结构测定表明配合物是一个平面正方形单核铜(Ⅱ)配合物,但配体(L^(1))^(-)的吡咯环β位发生了非预期的碘代,形成了碘代配体(L^(1a))^(-),配合物为[L^(1a)CuI]。

Copper(Ⅱ)complex[L^(1a)CuI]was synthesised by reaction of ligand HL^(1),in methanol,with copper(Ⅱ)tetrafluoroborate and potassium iodide,using triethyleneamine as a base,and characterised by IR,UV-Vis and single crystal X-ray diffraction.A single crystal X-ray determination carried out on the complex reveals that it is a mononuclear square planar copper(Ⅱ)complex of the unexpectedly iodinated ligand(L^(1a))^(-),[L^(1a)CuI],with iodination of the pyrrole ring at β position observed.