Dioxomolybdenum(VI) complexes of hydrazone phenolate ligands - syntheses and activities in catalytic oxidation reactions

Hossain, Md KamalLund University,Lunds universitet,Kemisk fysik,Enheten för fysikalisk och teoretisk kemi,Kemiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Chemical Physics,Physical and theoretical chemistry,Department of Chemistry,Departments at LTH,Faculty of Engineering, LTH,Jahangirnagar University (författare)

The new cis-dioxomolybdenum (VI) complexes [MoO2(L2)(H2O)] (2) and [MoO2(L3)(H2O)] (3) containing the tridentate hydrazone-based ligands (H2L2 = N'-(3,5-di-tert-butyl-2-hydroxybenzylidene)-4-methylbenzohydrazide and H2L3 = N'-(2-hydroxybenzylidene)-2-(hydroxyimino)propanehydrazide) have been synthesized and characterized via IR, 1H and 13C NMR spectroscopy, mass spectrometry, and single crystal X-ray diffraction analysis. The catalytic activities of complexes 2 and 3, and the analogous known complex [MoO2(L1)(H2O)] (1) (H2L1 = N'-(2-hydroxybenzylidene)-4-methylbenzohydrazide) have been evaluated for various oxidation reactions, viz. oxygen atom transfer from dimethyl sulfoxide to triphenylphosphine, sulfoxidation of methyl-p-tolylsulfide or epoxidation of different alkenes using tert-butyl hydroperoxide as terminal oxidant. The catalytic activities were found to be comparable for all three complexes, but complexes 1 and 3 showed better catalytic performances than complex 2, which contains a more sterically demanding ligand than the other two complexes.

Plutenko, Maxym O.Taras Shevchenko National University of Kyiv (författare)
Schachner, Jörg A.Karl-Franzens-University of Graz (författare)
Haukka, MattiUniversity of Jyväskylä (författare)
Mösch-Zanetti, Nadia C.Karl-Franzens-University of Graz (författare)
Fritsky, Igor O.Taras Shevchenko National University of Kyiv (författare)
Nordlander, EbbeLund University,Lunds universitet,Kemisk fysik,Enheten för fysikalisk och teoretisk kemi,Kemiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Chemical Physics,Physical and theoretical chemistry,Department of Chemistry,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)ook1-eno (författare)
Kemisk fysikEnheten för fysikalisk och teoretisk kemi (creator_code:org_t)

Av författaren/redakt...: Hossain, Md Kama ...; Plutenko, Maxym ...; Schachner, Jörg ...; Haukka, Matti; Mösch-Zanetti, N ...; Fritsky, Igor O.; visa fler...; Nordlander, Ebbe; visa färre...

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