Syntheses and 1D structures of organic-inorganic hydrid polymers combining M(ClO4)2 (M = Cd, Zn) junctions and the semi-flexible bis-pyridyl ligand 3-pmpmd (N,N′-bis(3-pyridylmethyl)pyromellitic diimide) |
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| Authors: | Xing-Qiang Lü Li Zhang Chun-Long Chen Cheng-Yong Su Bei-Sheng Kang |
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| Institution: | School of Chemistry and Chemical Engineering, Sun Yat-Sen (Zhongshan) University, Xingang Xi Road 135, Guangzhou 510275, China |
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| Abstract: | Two 1D organic-inorganic coordination polymers, Cd(3-pmpmd)(CH3CN)2(H2O)2]n · 2n(ClO4)2 (1) and Zn(3-pmpmd)1.5(H2O)2]n · 2n(ClO4)2 · nCH3CN (2), were obtained from M(ClO4)2 (M = Cd, Zn) and the semi-flexible 3,3′-N-donor bis-pyridyl ligand 3-pmpmd: 1 has an 1D zigzag framework with 3-pmpmd in the ZT-mode (anti, trans-) conformation, while 2 has an 1D rod and loop network with 3-pmpmd in both ZT- and ZC-mode (anti, cis-) conformations. Results showed that the metal ions could influence the coordination mode of a semi-flexible bis-pyridyl ligand. |
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| Keywords: | N N&prime -bis(3-pyridylmethyl)pyromellitic diimide Semi-flexible bis-pyridyl ligand Conformational isomerism Crystal structure Cd and Zn coordination polymers |
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