Novel molecular complexation between meso-tetraarylporphyrinato magnesium(II) and phosphorus(III) chloride

•MgT(4-X)PP used for new molecular complexation with PCl3.•The molar ratio of [MgT(4-X)PP] to PCl3 in the complexes was 1:2.•Two nitrogen atoms of the metalloporphyrin act as electron donors.•The tetrapyrrolic core of metalloporphyrin in the complexes is deformed.

The interaction between meso-tetraarylporphyrinato magnesium(ІІ) [MgT(4-X)PP] (X = H, CH3, and CH(CH3)2) and PCl3, as an electron acceptor, produced new molecular complexation [MgT(4-X)PP(PCl3)2]. The synthesized molecular complexes were characterized by (1H, 31P) NMR, UV–Vis, FT-IR spectroscopies and electric conductivity. In these molecular complexes, the central core of porphyrin, corrugates and two lone electron pairs of nitrogen atoms in the metalloporphyrin act as σ-electron donors to a phosphorous atom in PCl3 and the second PCl3 molecule acts as a ligand to magnesium(II) ion. The molar ratio of metalloporphyrin to PCl3 in the molecular complexes was 1:2. The synthesized molecular complexes in acetone solvent showed no electric conductivity.

Graphical abstractThe interaction between meso-tetraarylporphyrinato magnesium(ІІ) [MgT(4-X)PP] (X = H, CH3, and CH(CH3)2) and PCl3, as an electron acceptor, produced new molecular complex [MgT(4-X)PP(PCl3)2], with the molar ratio of 1:2 (donor:acceptor).Figure optionsDownload full-size imageDownload as PowerPoint slide