FINGERPRINTING PETROPORPHYRIN STRUCTURES WITH VIBRATIONAL SPECTROSCOPY .2. RESONANCE RAMAN MARKER BANDS FOR THE EXOCYCLIC RINGS OF NICKEL TETRAHYDROBENZOPORPHYRINS AND NICKEL CYCLOALKANOPORPHYRINS
Jg. Rankin et al., FINGERPRINTING PETROPORPHYRIN STRUCTURES WITH VIBRATIONAL SPECTROSCOPY .2. RESONANCE RAMAN MARKER BANDS FOR THE EXOCYCLIC RINGS OF NICKEL TETRAHYDROBENZOPORPHYRINS AND NICKEL CYCLOALKANOPORPHYRINS, Organic geochemistry, 23(5), 1995, pp. 419-427
The Q-band excited (568.2 nm) resonance Raman (RR) spectra are reporte
d for a series of geologically significant nickel(II) complexes of eti
o-, cycloalkano-, and tetrahydro-benzoporphyrins in the frequency rang
e from 600 to 1200 cm(-1). Several patterns in the RR spectra of these
complexes can be utilized as signatures for each petroporphyrin famil
y. Useful marker bands for these classes of petroporphyrins are identi
fied and distinguishing features of the spectra are given which can di
fferentiate closely related isomers within a given class.