Rhenium complexes of N-methyl N-confused tetraphenylporphyrin and its normal isomer

The rhenium tricarbonyl complexes bearing tridentate porphyrin ligands, N-methyltatraphenylporphyrin and N-methyl N-confused tatraphenylporphyrin, were prepared and their structures were studied by X-ray crystallographic analysis. Drastic change of HOMO-LUMO gap by confusion of N-methylpyrrole moiety was illustrated from experimental and theoretical studies.