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Updated: Sep 11, 2025

Preparation of Polyoxometalate-based Photo-responsive Membranes for the Photo-activation of Manganese Oxide Catalysts
Published on: August 7, 2018
Synthesis, solid state molecular structures, and cyclic voltammetry of five-coordinate perchlorate manganese
Nan Xu1, Joseph Roesch1, Navamoney Arulsamy2
1Department of Chemistry, Pennsylvania State Altoona, Altoona, Pennsylvania, USA.
Abstract:
We report the synthesis and characterization of two perchlorate manganese porphyrins obtained from the reactions of tetra-phenyl based porphyrin manganese chloride precursors, (T(p-Cl)PP)MnCl (T(p-Cl)PP = 5,10,15,20-tetra-p-chlorophenylporphyrinato dianion) and (TPP)MnCl (TPP = 5,10,15,20-tetraphenylporphyrinato dianion), with excess silver perchlorate. A further reaction between (TPP)Mn(OClO3) and benzamide was performed, resulting in the formation of a six-coordinate benzamide derivative, (TPP)Mn(O=C(NH2)Ph)(OClO3). The complexes were characterized by UV-Vis and IR spectroscopy, as well as single-crystal X-ray crystallography. The molecular structures of (T(p-Cl)PP)Mn(OClO3) and (TPP)Mn(O=C(NH2)Ph)(OClO3) reveal monodentate O-binding of the perchlorate and benzamide to the manganese center. The intermolecular interactions within the crystalline packing of both complexes were investigated using Hirshfeld surface analysis. In addition, the redox behavior of (T(p-Cl)PP)Mn(OClO3) was studied through cyclic voltammetry in THF.
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