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Facet-to-facet Linking of Shape-anisotropic Colloidal Cadmium Chalcogenide Nanostructures
Published on: August 10, 2017
Poly[(2,2'-bipyridine-κN,N')(μ(3)-2,4,6-trimethyl-isophthalato-κO,O:O:O,O)cadmium].
1College of Chemical and Environmental Engineering, Anyang Institute of Technology, Anyang 455000, People's Republic of China.
Acta Crystallographica. Section E, Structure Reports Online
|January 20, 2012
Summary
This study details a new polymeric cadmium complex, [Cd(C(11)H(10)O(4))(C(10)H(8)N(2))](n), featuring a distorted pentagonal-bipyramidal geometry. The complex forms extended sheets through bridging trimethyl-isophthalate ligands and exhibits weak hydrogen bonding.
Area of Science:
- Coordination Chemistry
- Crystal Engineering
- Materials Science
Background:
- Metal-organic frameworks (MOFs) and coordination polymers are of interest for their diverse structures and potential applications.
- Understanding the coordination preferences of metal ions with organic ligands is crucial for designing novel materials.
Purpose of the Study:
- To synthesize and characterize a novel polymeric cadmium complex with 2,2-bipyridine and trimethyl-isophthalate ligands.
- To elucidate the crystal structure and coordination geometry of the title complex.
- To investigate the supramolecular assembly and interactions within the crystal lattice.
Main Methods:
- Single-crystal X-ray diffraction was employed to determine the detailed crystal structure.
- The coordination environment around the Cd(II) ion was analyzed.
- Intermolecular interactions, such as hydrogen bonding, were identified.
Main Results:
- The crystal structure reveals a polymeric complex, [Cd(C(11)H(10)O(4))(C(10)H(8)N(2))](n), with Cd(II) adopting a distorted pentagonal-bipyramidal geometry.
- Each Cd(II) cation is coordinated by one 2,2-bipyridine ligand and three trimethyl-isophthalate (TMIPA) anions.
- TMIPA anions act as bridging ligands, connecting three Cd(II) centers to form polymeric sheets parallel to the (001) plane.
- Weak C-H⋯O hydrogen bonds are observed between adjacent sheets, contributing to the overall crystal packing.
Conclusions:
- The study successfully synthesized and characterized a novel polymeric cadmium coordination complex.
- The crystal structure demonstrates a unique coordination environment and a layered polymeric architecture.
- The findings contribute to the understanding of crystal engineering principles in the design of coordination polymers with specific structural motifs.
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