EXPERIMENTAL AND THEORETICAL STUDY OF THE VIBRATIONAL SPECTRA OF TIN(IV) COMPLEXES BASED ON 2–HYDROXY–3,6-DI–TERT–BUTYL–PARA–BENZOQUIANONE
N. M. Khamaletdinova, I. N. Meshcheryakova, A. V. Piskunov, O. V. Kuznetsova
Razuvaev Institute of Organometallic Chemistry, Russian Academy of Sciences, Nizhny Novgorod, Russia
Keywords: Raman spectroscopy, infrared spectroscopy, density functional theory, tin, 2–hydroxy–3,6–di–tert–butyl–para–benzoquianone, 2,5–dihydroxy–3,6–di–tert–butyl–para–benzoquianone
Abstract
Raman spectra of tin 2–hydroxy–3,6–di–tert–butyl–para–benzoquianone complexes L2SnX2 and LSnX3 (L is 2–oxy–3,6–di–tert–butyl–para–benzoquianone; X = CH3, C2H5, n–C4H9, and C6H5) are studied. A comparative analysis of the experimental and calculated spectra is carried out and the vibrational frequencies are conventionally assigned. A new tin(IV) complex based on 2,5–dihydroxy–3,6–di–tert–butyl–para–benzoquianone (L'H2) containing phenyl substituents at the metal atom is synthesized. Absorption bands of the complexes are interpreted in the low-frequency range of the infrared spectrum that was not considered previously.
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