摘要
基于构筑单元K[Cr(bpb)(CN)2]和[Cu(cyclam)](Cl O4)合成了一个氰根桥联的CrⅢ-CuⅡ一维化合物{[Cu(cyclam)][Cr(bpb)(CN)2]2·2H2O}n[cyclam=1,4,8,11-四氮杂环十四烷;bpb2-=1,2-二(2-吡啶甲酰胺基)苯](1),并通过X-衍射单晶分析表征其结构特征。结果表明:化合物1是由氰根桥联的2种不同金属组成的聚合物,其结构属于三斜晶系,P1空间群,a=0.9667 3(19)nm,b=1.345 1(3)nm,c=1.382 0(3)nm,α=77.12(3)°,β=76.93(3)°,γ=82.02(3)°,V=1.699 1(6)nm3,Z=2,Dc=1.567 g·cm-3,μ=1.086 mm-1,F(000)=828,R1=0.0413,w R2=0.1200。磁性研究表明:配合物1中的CrⅢ离子和CuⅡ离子之间存在弱的铁磁耦合作用。
A one-dimensional cyanide-bridged CrⅢ-CuⅡ complex {[Cu(cyclam)][Cr(bpb)(CN)2]2·2H2O}n(cyclam=1,4,8, 11-tetraazacyclotetradecane, bpb2-=1,2-bis(pyridine-2-carboxamido)-benzenate)(1) has been synthesized by the reaction of building blocks [Cu(cyclam)](Cl O4)2and K[Cr(bpb)(CN)2]. Single crystal X-ray diffraction analysis reveals that complex 1 crystallizes in triclinic space group P1 with a=0.966 73(19) nm, b=1.345 1(3) nm, c=1.382 0(3) nm, α=77.12(3)°, β=76.93(3)°, γ=82.02(3)°, V=1.699 1(6) nm3, Z=2, Dc=1.567 g·cm-3, μ=1.086 mm-1,F(000)=828, R1=0.041 3, w R2=0.120 0, the structure of complex 1 is a type of polymer with two different metal centers which are alternatively linked by cyanide group. Magnetic investigations indicate that complex 1 exhibits a weak ferromagnetic coupling between CrⅢ and CuⅡcenters through the cyanide bridge. CCDC: 972349.
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
2015年第3期565-570,共6页
Chinese Journal of Inorganic Chemistry
基金
江苏省高校优势学科建设工程项目
中央高校基本科研业务费专项资金资助项目(No.2014ZDPY25)
关键词
氰根桥联
晶体结构
磁性
杂金属
crystal structure
cyanide-bridged
magnetic property
heterometallic