Abstract
Reaction of [VIVO(acac)2] with H3hap-dahp (I: Schiff base derived from 2-hydroxyacetophenone and 1,3-diamino-2- hydroxypropane) in methanol under aerobic conditions resulted in the formation of the complex [VVO(hap-dahp)] (1). Treatment of I with vanadium(IV) exchanged zeolite Y followed by aerial oxidation gave the encapsulated oxidovanadium(V) complex [VVO(hap-dahp)]-Y (2) in the nanocavity of zeolite Y. Elemental analysis, spectroscopic (IR, electronic, 1H and 51V NMR) studies, scanning electron micrographs and X-ray diffraction patterns have been used to characterize these complexes, which have a distorted octahedral structure, confirming the tribasic O3N2 binding mode of the ligand. The encapsulated complex [VVO(hap-dahp)]- Y (2) catalyzes the oxidation of styrene, methyl phenyl sulfide and diphenyl sulfide using H2O2 as an oxidant in good yield (82%, 98% and 81%, respectively). Styrene, under optimized reaction conditions, gave five reaction products, namely styrene oxide, benzaldehyde, 1-phenylethane-1,2-diol, benzoic acid and phenylacetaldehyde, while the organic sulfides gave the corresponding sulfoxides as the major product. The neat complex [V VO(hap-dahp)] (1) also exhibits good catalytic activity for these substrates. The encapsulated complex showed a good recycling ability.
| Original language | English |
|---|---|
| Pages (from-to) | 180-188 |
| Number of pages | 9 |
| Journal | Polyhedron |
| Volume | 54 |
| DOIs | |
| Publication status | Published - 2013 Apr 30 |
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All Science Journal Classification (ASJC) codes
- Physical and Theoretical Chemistry
- Inorganic Chemistry
- Materials Chemistry
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Synthesis, structural characterization, encapsulation in zeolite y and catalytic activity of an oxidovanadium(V) complex with a tribasic pentadentate ligand. / Maurya, Mannar R.; Bisht, Manisha; Chaudhary, Nikita; Avecilla, Fernando; Kumar, Umesh; Hsu, Hua Fen.
In: Polyhedron, Vol. 54, 30.04.2013, p. 180-188.Research output: Contribution to journal › Article
TY - JOUR
T1 - Synthesis, structural characterization, encapsulation in zeolite y and catalytic activity of an oxidovanadium(V) complex with a tribasic pentadentate ligand
AU - Maurya, Mannar R.
AU - Bisht, Manisha
AU - Chaudhary, Nikita
AU - Avecilla, Fernando
AU - Kumar, Umesh
AU - Hsu, Hua Fen
PY - 2013/4/30
Y1 - 2013/4/30
N2 - Reaction of [VIVO(acac)2] with H3hap-dahp (I: Schiff base derived from 2-hydroxyacetophenone and 1,3-diamino-2- hydroxypropane) in methanol under aerobic conditions resulted in the formation of the complex [VVO(hap-dahp)] (1). Treatment of I with vanadium(IV) exchanged zeolite Y followed by aerial oxidation gave the encapsulated oxidovanadium(V) complex [VVO(hap-dahp)]-Y (2) in the nanocavity of zeolite Y. Elemental analysis, spectroscopic (IR, electronic, 1H and 51V NMR) studies, scanning electron micrographs and X-ray diffraction patterns have been used to characterize these complexes, which have a distorted octahedral structure, confirming the tribasic O3N2 binding mode of the ligand. The encapsulated complex [VVO(hap-dahp)]- Y (2) catalyzes the oxidation of styrene, methyl phenyl sulfide and diphenyl sulfide using H2O2 as an oxidant in good yield (82%, 98% and 81%, respectively). Styrene, under optimized reaction conditions, gave five reaction products, namely styrene oxide, benzaldehyde, 1-phenylethane-1,2-diol, benzoic acid and phenylacetaldehyde, while the organic sulfides gave the corresponding sulfoxides as the major product. The neat complex [V VO(hap-dahp)] (1) also exhibits good catalytic activity for these substrates. The encapsulated complex showed a good recycling ability.
AB - Reaction of [VIVO(acac)2] with H3hap-dahp (I: Schiff base derived from 2-hydroxyacetophenone and 1,3-diamino-2- hydroxypropane) in methanol under aerobic conditions resulted in the formation of the complex [VVO(hap-dahp)] (1). Treatment of I with vanadium(IV) exchanged zeolite Y followed by aerial oxidation gave the encapsulated oxidovanadium(V) complex [VVO(hap-dahp)]-Y (2) in the nanocavity of zeolite Y. Elemental analysis, spectroscopic (IR, electronic, 1H and 51V NMR) studies, scanning electron micrographs and X-ray diffraction patterns have been used to characterize these complexes, which have a distorted octahedral structure, confirming the tribasic O3N2 binding mode of the ligand. The encapsulated complex [VVO(hap-dahp)]- Y (2) catalyzes the oxidation of styrene, methyl phenyl sulfide and diphenyl sulfide using H2O2 as an oxidant in good yield (82%, 98% and 81%, respectively). Styrene, under optimized reaction conditions, gave five reaction products, namely styrene oxide, benzaldehyde, 1-phenylethane-1,2-diol, benzoic acid and phenylacetaldehyde, while the organic sulfides gave the corresponding sulfoxides as the major product. The neat complex [V VO(hap-dahp)] (1) also exhibits good catalytic activity for these substrates. The encapsulated complex showed a good recycling ability.
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U2 - 10.1016/j.poly.2013.02.036
DO - 10.1016/j.poly.2013.02.036
M3 - Article
AN - SCOPUS:84875015802
VL - 54
SP - 180
EP - 188
JO - Polyhedron
JF - Polyhedron
SN - 0277-5387
ER -