Magnesium(II) porphyrin (Mg-2) was prepared previously in nearly quantitative yield from 2 and MgBr 2 .Et 2 O in the presence of a base and in 40% yield by Mg-salt assisted selfcondensation of 1-formyldipyrromethane. Several methods of preparation of zinc(II) porphine (Zn-2) were reported, mostly consisting of a reaction between porphine and zinc(II) acetate in a suitable solvent (THF, CH 2 Cl 2 /MeOH). Copper(II) porphine (Cu-2) is one of the earliest examples of an artificial metalloporphyrin. It was prepared from copper(II) acetate and porphine in boiling acetic acid by Rothemund in 1936. It was also prepared by reaction of bis(acetylacetonato)copper(II) with porphine in refluxing chloroform. Nickel(II) porphyrin (Ni-2) was previously prepared in an unreported yield by refluxing nickel(II) acetate and porphyrin in chlorororm. Cobalt(II) porphine (Co-2) was prepared in a moderate yield using a transmetallation reaction of magnesium(II) porphine and cobalt(II) acetate in hot benzonitrile. A preparation of the (porphyrinato)iron(III) chloride complex with a relatively high yield (75 %) was reported, using a reaction between porphine and iron(II) chloride in refluxing N,Ndimethylformamide. Vibrational Spectra (Tables and, Figures S... -S...). The IR spectra recorded for the Mg(II), Zn(II), Cu(II) and Ni(II)-porphyrins correspond to those already reported. The IR spectra of all M-2 metalloporphines show a similar signal pattern with only minor differences in frequencies of some of the bands. When compared to the spectrum of 2 itself, the most notable differences are (i) the absence of signals that 2 has at 718, 728 and 970 cm -1 spectrum, assigned to the in-and out-of-plane bending vibrations of the pyrrole rings ) and (ii) a significant change of the frequencies of the bands assigned to the in-and out-of-plane bending modes of the meso C-H bond, which move from 950 and 1224 cm -1 in 2 to 991-1003 and 1289-1318 cm -1 in