Substituted mono- and diphthalocyanine complexes of yttrium and erbium: synthesis, spectra and thermal stability

Chlorine-, bromine- and nitrosubstituted mono- and diphthalocyanine complexes of yttrium and erbium have been synthesized. Their thermal stability, vibrational and electronic spectra have been studied. A change in the character of electronic absorption spectra of sublimated solid films of diphthalocyanine complexes, as compared with the spectra of their solutions in dimethylformamide, has been pointed out. 14 refs.; 2 figs.; 1 tab