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Preparation of Polyoxometalate-based Photo-responsive Membranes for the Photo-activation of Manganese Oxide Catalysts
Published on: August 7, 2018
A one-dimensional manganese(III)-porphyrin coordination polymer: crystal structure and photophysical properties
1Institute of Applied Chemistry, School of Chemistry and Chemical Engineering, Jiangxi Province Key Laboratory of Coordination Chemistry, Jinggangshan University, Ji'an, Jiangxi 343009, People's Republic of China.
Abstract:
A novel manganese(III)-porphyrin complex, namely, catena-poly[[chloridomanganese(III)]-μ2-5,10,15,20-tetrakis(pyridin-3-yl)-21H,23H-porphinato(2-)-κ5N21,N22,N23,N24:N5], [MnCl(C40H24N8)]n, 1, was prepared by the hydrothermal reaction of manganese chloride with 5,10,15,20-tetrakis(pyridin-3-yl)-21H,23H-porphine. The crystal structure was determined by single-crystal X-ray diffraction. The porphyrin macrocycle exhibits a saddle-like distortion geometry. The MnIII atom has a six-coordination geometry. Each porphyrin unit links to two neighbouring units to yield a one-dimensional coordination polymer. These chains are further interlinked by hydrogen bonds to form a two-dimensional network. The complex shows red photoluminescence emission bands in ethanol solution, which can be attributed to ligand-to-ligand charge transfer (LLCT) accompanied by partial metal-to-ligand charge transfer (MLCT), as revealed by TDDFT calculations.
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