Synthesis and Crystal Structure of a Cadmium Coordination Polymer with Dicyanamide and 1,2-Bis(1,2,4-triazol-1-yl)ethane  

作　　者：王寿武 杨渊 李宝龙 张勇 

机构地区：[1]Donggang College, Huaihai Institute of Technology [2]Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry and Chemical Engineering, Suzhou University

出　　处：《Chinese Journal of Structural Chemistry》2007年第7期763-766,共4页结构化学（英文）

基　　金：supported by NNSFC (No. 20671066), Jiangsu Province (No. BK2006049) ;the Key Laboratory of Organic Synthesis of Jiangsu Province (No. JSK0612)

摘　　要：The new cadmium（N） coordination polymer [Cd（bte）2（dca）2]n 1 （bte = 1,2-bis（1,2,4- triazol-1-yl）ethane, dca = dicyanamide） was synthesized and characterized by single-crystal X-ray diffraction. The crystal is of monoclinic, space group P21/n with a = 8.7148（15）, b = 8.6142（17）, c = 15.204（3） A, fl= 92.100（10）°, V= 1140.6（4） A3, Z= 2, Mr = 572.87, Dc= 1.668 g/cm3, F（000） = 572, /t = 1.004 mm-l, the final R = 0.0654 and wR = 0.1429 for 1737 observed reflections （I 〉 2σ（I））. The cadmium atom is coordinated equatorially by four nitrogen atoms from four bte ligands and axially by two nitrogen atoms from two dca anions to adopt a distorted octahedral geometry. Each bte molecule bridges two cadmium（II） atoms. Two strands of bte molecules are wrapped around each other, and held together by cadmium（H） atoms. 1 Forms a double chain structure containing eighteen-membered Cd2（bte）2 rings.The new cadmium（N） coordination polymer [Cd（bte）2（dca）2]n 1 （bte = 1,2-bis（1,2,4- triazol-1-yl）ethane, dca = dicyanamide） was synthesized and characterized by single-crystal X-ray diffraction. The crystal is of monoclinic, space group P21/n with a = 8.7148（15）, b = 8.6142（17）, c = 15.204（3） A, fl= 92.100（10）°, V= 1140.6（4） A3, Z= 2, Mr = 572.87, Dc= 1.668 g/cm3, F（000） = 572, /t = 1.004 mm-l, the final R = 0.0654 and wR = 0.1429 for 1737 observed reflections （I 〉 2σ（I））. The cadmium atom is coordinated equatorially by four nitrogen atoms from four bte ligands and axially by two nitrogen atoms from two dca anions to adopt a distorted octahedral geometry. Each bte molecule bridges two cadmium（II） atoms. Two strands of bte molecules are wrapped around each other, and held together by cadmium（H） atoms. 1 Forms a double chain structure containing eighteen-membered Cd2（bte）2 rings.

关 键 词：cadmium complex crystal structure 1 2-bis（1 2 4-triazol-l-yl）ethane DICYANAMIDE 

分 类 号：O631.3[理学—高分子化学]