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Raman spectra of platinum hematoporphyrin complexes
Author(s) -
Berjot M.,
Bernard L.,
Macquet J. P.,
Theophanides T.
Publication year - 1975
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/jrs.1250040102
Subject(s) - hematoporphyrin , raman spectroscopy , platinum , chemistry , porphyrin , spectral line , atom (system on chip) , crystallography , analytical chemistry (journal) , photochemistry , optics , organic chemistry , catalysis , physics , astronomy , computer science , embedded system , photodynamic therapy
The laser Raman spectra of the solid hematoporphyrin free‐base H 2 Hem, the diacid, [H 4 Hem] 2+ and the platinum complexes, [H 4 Hem] 2+ [PtCI 4 ] 2− , the Sitting‐Atop complex (SAT), cis ‐Pt(H 2 Hem) Cl 2 and the platino‐hematoporphyrin PtHem have been studied in the range 500 to 1800 cm −1 . The spectra of the platinum complexes are significantly different from those of hematoporphyrin and changes of the band profiles upon incorporation of the platinum atom into the porphyrin plane are shown. An interesting change is observed in the series H 2 Hem → cis ‐Pt(H 2 Hem) Cl 2 → PtHem in the region 1300–1650 cm −1 . The Raman lines in this region are normally assigned to the vibrational modes of CC and CN. The Raman spectra provide another evidence of the existence of the SAT complex.