A novel two-dimensional network cadmium(II) coordination polymer containing one 1,4-bis(1.2.4-triazol-1-yl)butane and double dicyanamide bridges

作者:Li BZ; Liu XG; Wang ZH; Li BL*; Zhang Y
来源:Acta Crystallographica Section C-Crystal Structure Communications, 2006, 62: M10-M12.
DOI:10.1107/S0108270105038102

摘要

In the crystal structure of the title complex, poly[mu-1,4-bis(1,2,4-triazol-1-yl)butane-di-mu-1,5-dicyanamido-cadmium(II)], [Cd(C2N3)(2)(C8H12N6)](n) or [Cd(dca)(2)(btb)](n), where dca is dicyanamide and btb is 1,4-bis(1,2,4-triazol-1-yl) butane, each Cd-II atom occupies a center of symmetry and is in a six-coordinated distorted octahedral environment. Four N atoms from four dca ligands fill the equatorial positions, and two N atoms from two btb ligands occupy the axial positions. The dca ligands adopt an end-to-end coordination mode and link the Cd-II atoms to form a 12-membered Cd(dca)(2)Cd ring, and neighboring rings extend along the b axis to form a [Cd(dca)(2)](n), chain. The btb ligands, acting as bridging bidentate ligands, link the Cdu atoms of adjacent one-dimensional [Cd(dca)(2)](n), chains, forming a rhombic two-dimensional network.