Synthesis, structure, spectroscopic characterization and catalytic activity of chiral dioxidomolybdenum(VI) Schiff base complexes derived from R(-)-2-amino-1-propanol

Grzegorz Romanowski , Jaromir Kira , Michał Wera

Abstract

Ten new chiral cis-dioxidomolybdenum(VI) complexes with tridentate Schiff bases were synthesized by monocondensation of R(−)-2-amino-1-propanol with salicylaldehyde and its derivatives. Their spectroscopic properties have been investigated UV-Vis, CD, IR, one- (1H, 13C) and two-dimensional (COSY, gHSQC and NOESY) NMR techniques. The single-crystal X-ray analysis of the {R(−)-2-[(1-oxidopropyl)iminomethyl]-4-methylphenolato-κ3N,O,O’}(methanol)dioxidomolybdenum(VI) reveals a distorted octahedral geometry. After optimization of reaction conditions, catalytic activity of these complexes in oxidation of olefins, i.e. styrene and cyclohexene, with aqueous 30% H2O2 or tert-butyl hydroperoxide (TBHP) as an oxidant were tested. Moreover, the molybdenum(VI) Schiff base complexes are also able to catalyze the oxidation of thioanisole to methyl phenyl sulfoxide in presence of aqueous 30% H2O2.
Author Grzegorz Romanowski (FCh / DACh / LChAC)
Grzegorz Romanowski,,
- Laboratory of chemistry and Analytics of Cosmetics
, Jaromir Kira (FCh / DACh / LSCh)
Jaromir Kira,,
- Laboratory of Supramolecular Chemistry
, Michał Wera (FCh / DPCh / PK)
Michał Wera,,
- Pracownia Krystalochemii
Journal seriesInorganica Chimica Acta, ISSN 0020-1693, (A 25 pkt)
Issue year2018
Vol483
Pages156-164
Publication size in sheets0.5
DOIDOI:10.1016/j.ica.2018.08.022
URL https://doi.org/10.1016/j.ica.2018.08.022
Languageen angielski
Score (nominal)25
ScoreMinisterial score = 25.0, 31-08-2018, ArticleFromJournal
Ministerial score (2013-2016) = 25.0, 31-08-2018, ArticleFromJournal
Publication indicators WoS Impact Factor: 2016 = 2.002 (2) - 2016=1.749 (5)
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