Metalmetal bonds extended over a porphyrin ring. II. Resonance raman and far-infrared spectra of metalloporphyrins containing InM bonds

Abstract

The low-frequency resonance Raman (RR) and far-IR spectra of (TPP)InM(CO) 3Cp (M = Mo and W) are reported. The ν(InM) vibrations were located at ∼ 160 and 147 cm −1, respectively, for the Mo and W compounds. The RR excitation profiles were used to distinguish ν(InM) from TPP vibrations which dominate the low-frequency spectra and to demonstrate that the split component of the Soret transition near 460 nm contains some σ(InM)σ*(InM) character.