In:
Chemistry – A European Journal, Wiley, Vol. 24, No. 43 ( 2018-08), p. 11059-11066
Abstract:
An acetate‐bridged Ru‐substituted arsenotungstate [H 2 N(CH 3 ) 2 ] 14 [As 4 W 40 O 140 {Ru 2 (CH 3 COO)} 2 ] ⋅ 22 H 2 O ( 1 ) has been synthesized and structurally characterized. Four Ru atoms occupy the respective lacunary S2 sites of the crown‐shaped polyanion [As 4 W 40 O 140 ] 28− , and each Ru atom is coordinated by one As atom and five μ 2 ‐O atoms, comprising four from the S2 site and one from the acetate ligand. To the best of our knowledge, this coordination of the Ru atom, with an Ru−As bond length of 2.377(3)–2.387(3) Å, is unprecedented in polyoxometalate (POM) chemistry. Notably, 1 exhibits high efficiency, excellent selectivity, and good recyclability for the oxidation of sulfides with hydrogen peroxide (H 2 O 2 ). Catalytic oxidation of various sulfides in the presence of 1 gives superior conversion and selectivity for sulfones in acetonitrile, whereas sulfoxides are obtained in methanol.
Type of Medium:
Online Resource
ISSN:
0947-6539
,
1521-3765
DOI:
10.1002/chem.201800748
Language:
English
Publisher:
Wiley
Publication Date:
2018
detail.hit.zdb_id:
1478547-X