No abstract

The interaction of meso-tetraarylporphyrins, H 2 T(4-X)PP, with sulfur trioxide pyridine complex (SO 3 .py) in chloroform only produced 1:2 molecular complexes, [H 2 T(4-X)PP(SO 3 ) 2 ]. UV-vis, 1 H NMR, and FT-IR spectra, as well as elemental analysis, suggested pseudo tetrahedrally distorted porphyrin core structures with σ-bonding from two pyrrolenine nitrogen donors to the d orbital of sulfur in two SO 3 s and the occurrence of two hydrogen bonds between two pyrrolic NH and oxygens of sulfur trioxides from above and below the mean plane of the porphyrins. Copyright