Elsevier

Inorganica Chimica Acta

Volume 82, Issue 2, 15 February 1984, Pages 207-210
Inorganica Chimica Acta

Resonance raman spectra of molecular oxygen adducts of Co(salen) and its derivatives in solution

https://doi.org/10.1016/S0020-1693(00)82493-7Get rights and content

Abstract

Resonance Raman spectra of the molecular oxygen adducts of six Co(salen) derivatives have been measured in CH2Cl2 or CHCl3 containing pyridine using the mini-bulb method (∼−80°C, ∼4 atm O2 pressure). These adducts exhibit the O2 and CoO stretching bands at 1146−1143 and 530−515 cm−1, respectively. Although the former is insensitive to the nature of the in-plane ligand, the latter is sensitive to the geometry of the CoN2O2 core (steric effect) and the degree of π-conjugation over the entire chelate ring (electronic effect).

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