1,1-环丁烷二羧酸单、双核铜配合物的合成、晶体结构、热分析和磁性

Two new copper complexes, Cu（cbdc）（phen）（H2O）]·2H2O （1） and Cu2（cbdc）（phen）2（H2O）2]（ClO4）2·H2O （2） （cbdc= 1,1-cyclobutanedicarboxylate and phen= 1,10-phenanthroline）, were synthesized by reaction of cbdc with Cu（ClO4）2 and phen in ethanol aqueous solution. Complex 1 crystallizes in monoclinic system with space group P2（1）/c and a=0.9428（4） nm, b= 1.2183（5） nm, c= 1.6265（7） nm, β= 102.418（5）°, V= 1.8246（13） nm^3, Z=4, R=0.0445, wR2=0.0947. The structure of 1 is discretely mononuclear, which is packed by π…π interaction forming a 3D supramolecular structure where Cu（Ⅱ） ion is five-coordinated and has square-pyramidal coordination geometry. Its thermal decomposition procedure detail was studied by thermal analysis TG-DSC. Complex 2 belongs to monoclinic system with space group P2（1）/c and a=0.8897（3） nm, b= 1.9130（8） nm, c= 1.9936（8） nm,β=99.04（2）°, V=3.351（2） nm^3, Z=4, R=0.0540, wR2=0.1102. The structure of 2 is a discrete binucleus, where Cu（1） is four-coordinated by phen and cbdc in a square-planar geometry while Cu（2） is five-coordinated by phen, one O of cbdc and two H2O, which can be best described as distorted trigonal-bipyramidal geometry. Cu（1） and Cu（2） are linked by carboxylic group of cbdc in a bidentate bridging fashion. Variable-temperatttre magnetic susceptibilities of 2 in 2-300 K showed that its magnetic behavior obeyed Curie law.

Synthesis, Crystal Structures, Thermal Analysis and Magnetic Property of Mono- and Bi-nuclear 1,1-Cyclobutanedicarboxylate Copper Complexes

Two new copper complexes, Cu(cbdc)(phen)(H₂O)]·2H₂O ( 1 ) and Cu₂(cbdc)(phen)₂(H₂O)₂](ClO₄)₂·H₂O ( 2 ) (cbdc=1,1‐cyclobutanedicarboxylate and phen=1,10‐phenanthroline), were synthesized by reaction of cbdc with Cu(ClO₄)₂ and phen in ethanol aqueous solution. Complex 1 crystallizes in monoclinic system with space group P2(1)/c and a=0.9428(4) nm, b=1.2183(5) nm, c=1.6265(7) nm, β=102.418(5)°, V=1.8246(13) nm³, Z=4, R=0.0445, wR₂=0.0947. The structure of 1 is discretely mononuclear, which is packed by π···π interaction forming a 3D supramolecular structure where Cu(II) ion is five‐coordinated and has square‐pyramidal coordination geometry. Its thermal decomposition procedure detail was studied by thermal analysis TG‐DSC. Complex 2 belongs to monoclinic system with space group P2(1)/c and a=0.8897(3) nm, b=1.9130(8) nm, c=1.9936(8) nm, β=99.04(2)°,V=3.351(2) nm³, Z=4, R=0.0540, wR₂=0.1102. The structure of 2 is a discrete binucleus, where Cu(1) is four‐coordinated by phen and cbdc in a square‐planar geometry while Cu(2) is five‐coordinated by phen, one O of cbdc and two H₂O, which can be best described as distorted trigonal‐bipyramidal geometry. Cu(1) and Cu(2) are linked by carboxylic group of cbdc in a bidentate bridging fashion. Variable‐temperature magnetic susceptibilities of 2 in 2–300 K showed that its magnetic behavior obeyed Curie law.