2-(5-甲基-1,3,4-噻二唑)-硫乙酸锌(Ⅱ)配合物的合成、晶体结构和性质

摘要

合成了2个锌配合物[Zn(mtyaa)2(H2O)4]·4H2O (1)和[Zn(bpe)(mtyaa)2(H2O)2]n(2)(Hmtyaa=2-(5-甲基-1,3,4-噻二唑)-硫乙酸;bpe=1,2-双(4-吡啶基)乙烷),用X射线单晶衍射仪测定了配合物的单晶结构,并对它进行了元素分析、红外光谱、热重和粉末X射线衍射等表征.配合物1和2的晶体分别属于三斜晶系和单斜晶系,空间群分别为P-1和C2/c.π-π相互作用以及配位水和游离水分子与羧基氧之间的氢键作用将配合物1的单分子结构连成三维网状结构.配合物2中配位水与羧基氧以及配体中的氮原子之间的氢键作用将相邻链连接成二维平面结构.%Two coordination compounds [Zn(mtyaa)2(H2O)4]·4H2O (1) and [Zn(bpe)(mtyaa)2(H2O)2]n (2) (Hmtyaa=2-(5-methyl-1,3,4-thiadiazol-2-ylthio) acetic acid, bpe=1,2-bis(4-pridyl)ethane) have been synthesized and they were structurally characterized by single-crystal X-ray diffraction, and then were characterized by elemental analysis,FTIR spectra, thermal analysis and powder X-ray diffraction.Compounds 1 and 2 crystallize in the triclinic and monoclinic, space group P-1 and C2/c, respectively.Face-to-face π-π interactions and hydrogen bonds between coordinated and free water molecules with carboxylate oxygen atoms connect single molecules in compound 1 into three dimensional network.Compound 2 is connected into three dimensional structure by hydrogen bonds between coordinated water molecules and carboxylate oxygen atoms or nitrogen atoms.