N,N'-Bridged porphyrins. Novel synthesis, metal complexes, and conversion into N-monosubstituted porphyrins. Crystal structure of [N,N'-[(benzyloxy)methylene]tetraphenylporphyrin-N'',N''']dibromopalladium(II)
N,N'-Bridged porphyrins. Novel synthesis, metal complexes, and conversion into N-monosubstituted porphyrins. Crystal structure of [N,N'-[(benzyloxy)methylene]tetraphenylporphyrin-N'',N''']dibromopalladium(II)