Synthesis of a New Two-dimensional Cd(Ⅱ) Coordination Compound by Benzotriazole-5-carboxylate Acid and 1,10-Phenanthroline and Its Crystal Structure and Characterization

doi:10.1007/s40242-014-3523-2

Abstract

Abstract:

A mixed-ligand metal-organic complex [Cd(C₇H₃N₃O₂)(C₁₂H₈N₂)]_n was synthesized by cadmium(Ⅱ) nitrate, 1,10-phenanthroline(phen) and benzotriazole-5-carboxylate acid(H₂btca). Single crystal X-ray analysis indicates that complex 1 has a two-dimensional layer structure and crystallizes in an orthorhombic space group(Pbca), with cell parameters, a=1.7422(6) nm, b=0.9264(3) nm, c=2.0729(7) nm, α=90°, β=90°, γ=90°, V=3.346(2) nm³, Z=8. Each central Cd(Ⅱ) is six-coordinated by four N atoms, two of which are from 1,10-phenanthroline, and the other two from two different triazole nitrogen atoms and two O atoms from benzotriazole-5-carboxylate, forming a distorted octahedral geometry. Adjacent Cd(Ⅱ) centers are bridged by benzotriazole-5-carboxylate molecules to form a one-dimensional chain, which is further connected by the nitrogen atoms of btca^2- to form an extended two-dimensional wave-like layer, with OFF(offset face-to-face) stacking interactions between phen ligands in adjacent layers, which are helpful to forming the three-dimensional supramolecular structure.

Key words: Benzotriazole-5-carboxylate acid, Cd(Ⅱ) complex, Crystal structure, Fluorescence

WANG Junlong, WANG Dongjie, LI Xing. Synthesis of a New Two-dimensional Cd(Ⅱ) Coordination Compound by Benzotriazole-5-carboxylate Acid and 1,10-Phenanthroline and Its Crystal Structure and Characterization[J]. Chemical Research in Chinese Universities, 2014, 30(3): 347-351.

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