3-羧基水杨醛缩2-氨甲基吡啶合铜配合物的合成、表征和晶体结构

Preparation,Characterization and Crystal Structure of N-(3-Carboxylsalicylidene)-2-(Iminomethyl)-Pyridino Copper(Ⅱ)

合成了3-羧基水杨醛缩2-氨甲基吡啶(H2SP)及其Cu(Ⅱ)配合物[Cu(HSP)(H2O)2]ClO4,通过红外光谱、紫外光谱、X射线单晶衍射分析等手段对配合物的结构进行了表征.该配合物属于单斜晶系,P-1空间群,晶胞参数为:a=0.871 53(12)nm,b=1.017 05(15)nm,c=1.939 3(3)nm,β=93.3°,V=1.716 13 nm3,Z=4,Dc=1.758 12 g/cm3,Mr=454.27,F(000)=924.00,R1=0.072 5,wR2=0.092 2.配合物中铜离子为五配位,处于变形的四方锥形配位环境中.分子间通过π-π堆积和氢键作用形成双分子链,然后通过π-π堆积形成二维层状结构,最后通过C-H…O弱氢键形成三维结构.

N （3-carboxylsalicylidene）-2-（iminomethyl） pyridine（HzSP） and its complex [Cu（HSP） （H2O）2] ClO4 were synthesized and characterized with IR spectroscopy, UV Vis spectroscopy, X-ray crystal diffraction techniques. The crystal of the title compound belongs to monoclinic system, space group P-1 with cell parameters： a = 0.871 53（12）nm,b = 1.017 05（15） nm,c = 1.939 3（3） nm,β = 93.3°,V = 1.716 13 nm^3, Z = 4,De= 1.758 12 g/cm^3, Mr=454. 27, F（000） = 924.00, R1 = 0.072 5, wR2 = 0.092 2. The copper ion is five coordinated in a square pyramidal geometry. Antiparallel bimolecular chains are formed through ππ stacking and hydrogen bonding interactions. Two dimensional networks are formed with the antiparallel bimolecular chains also through ππ stacking interaction. Then the networks construct three dimensional structure through weak C-- H ππ O intermolecular hydrogen bonds.