Spectroscopic properties of metalloporphyrins: implications for geoporphyrins Conference

Stanley, KD, Lopez de la Vega, R, Quirke, JME et al. (1989). Spectroscopic properties of metalloporphyrins: implications for geoporphyrins . 34(1), 195.

cited authors

  • Stanley, KD; Lopez de la Vega, R; Quirke, JME; Beato, BD; Yost, RA


  • Porphyrins chelate with virtually all elements which have metallic character. Nevertheless, there have been few studies which have compared the properties of the different metal complexes of the same porphyrin. In this paper the Mg(II), Sc(III), TiO(II), VO(II), Cr(III), Mn(III), Fe(III), Co(II), Ni(II), Cu(II), Zn(II), Al(III), Ga(III), Ti(III), Hg(II), and Sn(IV) complexes of octaethylporphyrin, OEP, were synthesized. Each complex was analyzed by IR, UV, and proton NMR, where appropriate. Additionally the compounds were studied by electron ionization, and positive and negative chemical ionization mass spectrometry. The spectroscopic data for the metal complexes were intercompared and correlated with the Buchler stability index of porphyrins. A suite of 14 metal complexes of meso nitro OEP (5-nitro OEP) and 5 metal complexes of meso amino OEP were prepared and analyzed similarly to provide data on the effect of electron withdrawing and electron releasing substituents on metalloporphyrin activity.

publication date

  • March 1, 1989

start page

  • 195


  • 34


  • 1