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Updated: Sep 8, 2025

Facet-to-facet Linking of Shape-anisotropic Colloidal Cadmium Chalcogenide Nanostructures
Published on: August 10, 2017
Highly emissive polymorphs of anhydrous cadmium tetracyanoplatinate and their solvated coordination networks
Ania S Sergeenko1, Damir Paripovic1, Chahinez Dab2
1Department of Chemistry, Simon Fraser University, 8888 University Drive, Burnaby, British Columbia, V5A 1S6, Canada. dleznoff@sfu.ca.
Abstract:
Two anhydrous polymorphs of cadmium cyanoplatinate Cd[Pt(CN)4] coordination polymers have been synthesized and thermally, spectroscopically, and structurally characterized. α-Cd[Pt(CN)4] and β-Cd[Pt(CN)4] are densely packed, highly emissive 3-D solids, with quantum yields of 0.85 (λem = 520 nm) and 0.79 (λem = 448 nm) respectively. Their mutual hydrate, Cd(H2O)[Pt(CN)4]·2H2O, forms a complex 3-D coordination polymer with Cd-O-Cd bridges and Pt-Pt interactions. Additionally, exposure of solid α-Cd[Pt(CN)4] and β-Cd[Pt(CN)4] to several solvent vapours results in the formation of 2-D cyanometallate sheets of the adduct compounds CdL2[Pt(CN)4] (L = DMSO, DMF, and pyridine). Cd(pyridine)2[Pt(CN)4] shows a significantly lower quantum yield (0.32) in comparison to the parent Cd[Pt(CN)4] coordination polymers. Upon heating CdL2[Pt(CN)4] preferentially forms the kinetic product α-Cd[Pt(CN)4].
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