摘要
采用3,6-二(2-吡啶基-1,2,4,5-四嗪)(DPTZ)为配体,在水热和叠氮钠存在下,DPTZ中四嗪键发生断裂反应,与Pb2+采用自组装的方法合成了配位聚合物{[PbN3(N-bis-(R-hydroxyl-2-pyridyl)ketazine)0.5]}n,利用单晶衍射仪,红外光谱和元素分析对其进行了晶体结构的解析和表征。它属于三斜晶系,空间群P1,晶胞参数分别为a=0.59603(19)nm,b=0.8406(3)nm,c=0.8622(3)nm,α=75.596(5)°,β=87.045(6)°,γ=70.512(5)°,V=0.3942(2)nm3,Mr=959.47,Z=2,Dc=1.032 g/cm3,μ=0.843 mm-1,F(000)=1948.0。在该结构中,中心Pb(II)周围形成了一个稍微扭曲的四面体构型,分别与一个来自N-bis-(R-hydroxyl-2-pyridyl)ketazine配体的三个N原子、1个O原子配位,配合物存在着较强的π-π堆积作用。
A novel coordination polymer {[PbN3(N-bis-(R-hydroxyl-2-pyridyl)ketazine)0.5]}n(1) has been synthesized from the cleavage of 3,6-di-2-pyridyl-1,2,4,5-tetrazine(DPTZ) and Pb2+ by self-assembly method.The compound was characterized by elemental analysis,IR,and single-crystal X-ray diffraction analysis.Single-crystal X-ray analysis reveals that the title compound is crystallized in the monoclinic system,space group P1 with a=0.59603(19) nm,b=0.8406(3) nm,c=0.8622(3) nm,α=75.596(5)°,β=87.045(6)°,γ=70.512(5)°,V=0.3942(2) nm3,Mr=959.47,Z=2,Dc=1.032 g/cm3,μ=0.843 mm-1,F(000)=1948.0.Pb is selected as center metal atom and also adopted four coordinated mode with N atom of azide and L2-to form a distorted tetragonal geometry.There exists π-π stack interaction in complex 1.
出处
《人工晶体学报》
EI
CAS
CSCD
北大核心
2013年第5期998-1001,共4页
Journal of Synthetic Crystals
基金
国家自然科学基金青年基金(21101055)
关键词
Pb配合物
自组装
合成
结构
Pb(II) complex
self-assembly
synthesis
structure
