In methanolic solutions, disproportionation of the TCNQ anion radical to neutral TCNQ0 and the dianion TCNQ2- followed by aerobic oxidation of TCNQ2- results in the formation of methyl-4-dicyanomethylene benzoate anion (MDCB-). This anion coordinates to the manganese(III) atom of 5,10,15,20-tetraphenylporphinatomanganese(III) leading to the complex whose X-ray crystal structure is reported. The crystal had the monoclinic space group P21/n with unit cell dimensions a = 13.327(3), b = 20.236(6), c = 16.914(5) Å and β = 92.26(2)°. An important driving force behind the crystal packing is a hydrogen bonding interaction between non-identical ligands of adjacent molecules.
Bibliographical noteFunding Information:
The authors would like to thank the Agency of Industrial Science and Technology, Ministry of International Trade and Industry for the financial support under the research project ‘Harmonized Molecular Materials’. J.P.H. and J.S. acknowledge the Science and Technology Agency (STA) for providing STA fellowship.
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- Hydrogen bonding interaction
- Manganese(III) complexes
- X-ray crystal structures