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Synthesis, Structure, Photoluminescence and Theoretical Study of {(N,N'-Dimethyl-4,4'-bipyridinium)[Cd₂(μ₂-Cl)₄Cl₂]}_n with N,N'-Dimethyl-4,4'-bipyridinium Generated in Situ

W. Chen^a,*, Z. Yao^b, S. Ying^a, D. Liu^a and J. Liu^a

^aSchool of Chemistry and Chemical Engineering, Jiangxi Province Key Laboratory of Coordination Chemistry, Jinggangshan University, Ji’an, Jiangxi, 343009, China
^bBiology and Chemistry Engineering Department, Fuqing Branch of Fujian Normal University, Fuqing, Fujian 350300, China

The title complex, {(N,N'-dimethyl-4,4'-bipyridinium)[Cd₂(μ₂-Cl)₄Cl₂]}_n (1), in which the N,N'-dimethyl-4,4'-bipyridinium was generated in situ, was synthesized via hydrothermal reaction. X-Ray diffraction analysis revealed that the structure of 1 consisted of MV²⁺ (MV²⁺ = N,N'-dimethyl-4,4'-bipyridinium) cationic moieties and infinite [Cd₂(μ₂-Cl)₄Cl₂]_n anionic chains. The cadmium atom was bound by one terminal chlorine atom and four μ₂-bridging chlorine atoms, yielding a slightly distorted triangular bipyramid. Photoluminescent investigation revealed that the complex displayed an emission in greenish blue region.

Keywords: Cadmium, Crystal structure, Hydrothermal reaction, In situ, Viologen