摘要
以[Ni(CN)4]2-为构筑基元,与过渡金属离子Mn2+通过溶液缓慢扩散法合成出二维Hofmann类氰基桥联配位聚合物Mn(H2O)2[Ni(CN)4]·4H2O(1),并解析了其晶体结构.配位聚合物1属正交晶系,空间群Cmcm,晶胞参数a=0.73080(5)nm,b=1.21372(8)nm,c=1.40875(9)nm,α=β=γ=90°,Ni和Mn中心通过氰桥交互连接构成二维波浪形层状结构.通过混合法得到系列Hofmann类配位聚合物M(H2O)2[Ni(CN)4]·xH2O(M=Mn,Fe,Co,Ni,Cd)的粉末样品,粉末XRD结果表明,系列配位聚合物具有与1相同的晶体结构;变温粉末XRD和热重分析结果表明,系列配位聚合物具有较高的热稳定性.以Mn(H2O)2[Ni(CN)4]·xH2O的脱水样品为构筑模块与柱状配体pyrazine组装构筑的三维多孔配位聚合物具有一定的储气性能.
A 2D Hofmann-type cyano-bridged coordination polymer Mn（H2O）2[Ni（CN）4]·4H2O （1） has been synthesized by self-assembly based on [Ni（CN）4]^2- and Mn^2＋ as building blocks. The single crystals were obtained successfully by slow solution diffusion method and the crystal structure has been solved. 1 belongs to orthorhombic system, space group Cmcm, cell parameters： a=0.73080（5） nm, b=1.21372（8） nm, c=1.40875（9） nm, α=β=γ=90°. Ni and Mn centers are connected by cyano-bridges alternately, resulting in 2D undulate sheets. A series of powder samples M（H2O）2[Ni（CN）4]·xH2O （M=Mn, Fe, Co, Ni, Cd） have been synthesized by quick mixing method, which are isostructural with 1 confirmed by PXRD patterns. VT-PXRD and TG analysis indicate that these coordination polymers are of high stability. A 3D porous coordination polymer has been constructed with dehydrated sample of Mn（H2O）2[Ni（CN）4]·xH2O and pillared ligand pyrazine, which exhibits gas storage property.
出处
《化学学报》
SCIE
CAS
CSCD
北大核心
2010年第12期1199-1204,共6页
Acta Chimica Sinica
基金
江苏省高校自然科学基金(No.07KJB150030)资助项目
