Unprecedented degradation of nickel(II) 2,3,12,13-tetrabromo-5,10,15,20-tetraarylporphyrins by the anion of E-benzaldoxime: a novel approach to nickel(II) chlorophins and bacteriophins.

A novel and convenient approach to chlorophins and bacteriophins has been developed through a degradation of nickel(II) 2,3,12,13-tetrabromo-5,10,15,20-tetraarylporphyrins by the anion of E-benzaldoxime. The UV-vis spectra of these chlorophins and bacteriophins are similar to those of metalated chlorin and bacteriochlorin systems but with more intense and bathochromically shifted Q-bands.