锌(Ⅱ)与2,2′-联吡啶胺(dpa)和3-苯丙酸(HPPr)混配配合物的合成、晶体结构及性质表征

Synthesis, Crystal Structure and Characterization of Zn(dpa)(PPr) 2 \52H 2O

合成了锌（Ⅱ）与２，２′－联吡啶胺（ｄｐａ）和３－苯丙酸（ＨＰＰｒ）混配配合物［Ｚｎ（ｄｐａ）（ＰＰｒ）２］·２Ｈ２Ｏ，并测定其晶体结构．晶体属三斜晶系，Ｐ１空间群，晶胞参数ａ＝１０．５４１（１）ｎｍ，ｂ＝１１．３３３（１）ｎｍ，ｃ＝１１．６９８（１）ｎｍ，α＝９１．００（１）°，β＝９０．９６（１）°，γ＝８８．３８（１）°，Ｚ＝２，２个ＰＰｒ－１羧基上的４个氧原子、１个ｄｐａ上的２个氮原子分别与中心离子Ｚｎ（Ⅱ）配位，构型为畸变八面体．２个结晶水与配体间可能存在着分子内氢键．通过元素分析、ＩＲ、摩尔电导和热重分析表征了配合物的结构．

The zinc(Ⅱ) complex Zn(dpa)(PPr) 2 \52H 2O was prepared and its crystal structure was determined. The crystal belongs to triclinic, space group P 1[DD(-*2]-,with the crystal cell parameters: a =10.541(1) nm, b =11.333(1) nm, c =11.698(1) nm, α =91.00(1)°, β = 90.96(1)° , γ =88.38(1)°, Z =2. Four carboxyl oxygen atoms from two PPr - and two nitrogen atoms from dpa coordinate with Zn(Ⅱ) respectively to form a distorted octahedral. Intramolecular hydrogen bonds were observed involving two water molecules and the coordinated atoms. The complex was characterized by elementary analyses, IR, molar conductance and differential thermal analyses.