双金属层状配位聚合物{[NO_(2)BzQl][MCr(ox)_(3)]}_(∞)的合成、光谱表征和磁性研究  

Bimetallic Coordination Polymers with Layer Structure{[NO_(2)BZQ1][MCr(ox)_(3)]}_(∞):Syntheses,Spectra Characterization and Magnetic Properties

作　　者：陈友存[1] 刘光祥[1] 任小明[1] Chen Youcun;Liu Guangxiang;Ren Xiaoming(Department of Chemistry,Anqing Normal College,Anqing 246011)

机构地区：[1]安庆师范学院化学系,安庆246011

出　　处：《Chinese Journal of Chemical Physics》2002年第2期153-156,共4页化学物理学报(英文)

基　　金：国家自然科学基金资助项目(20171001);安徽省科技厅"十五"科技攻关资助项目(01012038)

摘　　要：合成了两种新的草酸根桥联的双金属层状配位聚合物,{[NO_(2)BzQl][MCr(ox)_(3)]}_(∞),其中[NO_(2)BzQl]+为1(p nitrobenzyl)quinolinium,ox^(2-)为Oxalate,M为Ni^(2+)或Cu^(2+),并经元素分析、红外光谱表征.变温磁化率测定结果表明,在这两种层状配位聚合物中,相邻的金属离子之间存在反铁磁偶合作用.应用Curie-Weiss公式拟合相应的变温磁化率数据为:C=0.662emuK/mol,θ=-1.658K,R=2.0×10^(-5)(Ni^(2+));C=0.17emuK/mol,θ=-0.693K,R=1.86×10^(-6)(Cu^(2+)).Two new bimetallic coordination polymers,{[MCr(ox)_(3)]}_(∞),where+=1(p nitrobenzyl)quinolinium,ox^(2-)=oxalate,M=Ni^(2+)(A)or Cu^(2+)(B),were synthesized,and characterized by elemental analysis,infrared spectra.The bonds ofνas(C=O)?δ(C=O)are at 1644 cm^(-1)?815 cm^(-1)for complex(A),and 1635 cm^(-1)?811 cm^(-1)for complex(B),respectively.The results of IR for(A)and(B)indicated that two complexes form 2-D layer structures in the solid state.The results of the variable temperature magnetic susceptibilities for(A)and(B)revealed that there exist antiferromagnetically coupled interactions both intra and interlayer.The best fit parameters using Curie-Weiss formula are as follows:C=0.662 emu K/mol,θ=-1.658 K,and agreement factor R=2.0×10-5 for(A).C=0.17 emu K/mol,θ=-0.693 K,and R=1.86×10^(-6)for(B).

关 键 词：草酸根桥联 配住聚台物 合成 磁性 

分 类 号：O641.4[理学—物理化学]