A novel three‐dimensional CdII metal–organic framework based on [Cd6(malonate)6] metallomacrocycles with zeolite SOD (sodalite) topology: poly[ammine‐μ3‐malonato‐cadmium(II)]

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A novel CdII metal–organic framework, [Cd(C3H2O4)(NH3)] n , was synthesized by liquid diffusion conducted in the presence of ammonia. The CdII atom has seven‐coordinate O6N pentagonal–bipyramidal geometry. Six CdII centers are joined by six malonate ligands to form an S 6‐symmetric [Cd6(malonate)6] metallomacrocycle, which is further extended through a side‐on chelating malonate ligand to form a three‐dimensional network. Topologically, each CdII center is connected to four others to yield an infinite three‐periodic four‐coordinated SOD (sodalite) network with point symbol {42ยท64}. The overall network structure in the crystal is maintained and stabilized by the presence of N—H...O hydrogen bonds.

Document Type: Research Article

DOI: http://dx.doi.org/10.1107/S0108270112003277

Affiliations: Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan, Shandong 250100, People's Republic of China

Publication date: March 15, 2012

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