A new oxovanadium(IV)-cucurbit[6]uril complex: Properties and potential for confined heterogeneous catalytic oxidation reactions

被引：33

作者：

de Lima, Silvania Marilene ^{[1
]}

Gomez, Jorge Antonio ^{[2
]}

Barros, Valeria P. ^{[1
]}

Vertuan, Greice de S. ^{[1
]}

Assis, Marilda das Dores ^{[1
]}

de Oliveira Graeff, Carlos Frederico ^{[3
]}

Demets, Gregoire Jean-Francois ^{[1
]}

机构：

[1] Univ Sao Paulo, Fac Filosofia Ciencias & Letras Ribeirao Preto, Dept Quim, BR-14040901 Ribeirao Preto, SP, Brazil

[2] Univ Sao Paulo, Fac Filosofia Ciencias & Letras Ribeirao Preto, Dept Fis & Matemat, BR-14040901 Ribeirao Preto, SP, Brazil

[3] FC UNESP, Dept Fis, BR-17033360 Bauru, SP, Brazil

来源：

POLYHEDRON | 2010年 / 29卷 / 15期

基金：

巴西圣保罗研究基金会;

关键词：

Cucurbit[6]uril; Oxovanadium(IV); Coordination compound; Size-selective catalysis; VANADYL COMPLEXES; ELECTRONIC-STRUCTURE; CUCURBITURIL; HYDROCARBONS; RESONANCE; LIGAND;

D O I：

10.1016/j.poly.2010.08.001

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

This work presents a new oxovanadium(IV)-cucurbit[6]uril complex, which combines the catalytic properties of the metal ion with the size-excluding properties of the macrocycle cavity. In this coordination compound, the VO2- ions are coordinated to the oxygen atoms located at the rim of the macrocycle in slightly distorted square-pyramidal configurations, which are in fact C-2v symmetries. This combination results in a size-selective heterogeneous catalyst, which is able to oxidize linear alkanes like n-pentane at room temperature, but not styrene, cyclohexane or z-cyclooctene, which are too big to enter the cucurbit[6]uril cavity. The results presented here contribute to understanding the mechanism of alkane catalytic oxidation by oxovanadium(IV) complexes. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：3008 / 3013

页数：6

共 51 条

[1] Characterization of oxovanadium (IV)-Schiff-base complexes and those bound on resin, and their use in sulfide oxidation [J].

Ando, R ;

Yagyu, T ;

Maeda, M .

INORGANICA CHIMICA ACTA, 2004, 357 (08) :2237-2244

[2] The Electronic Structure of the Vanadyl Ion [J].

Ballhausen, C. J. ;

Gray, Harry B. .

INORGANIC CHEMISTRY, 1962, 1 (01) :111-122

[3]

Behrend R, 1905, LIEBIGS ANN CHEM, V339, P1

[4] SPECTRAL PROPERTIES OF OXOVANADIUM(4) COMPLEXES .2. BISTRIFLUOROACETYLACETONEETHYLENEDIIMINE [J].

BOUCHER, LJ ;

YEN, TF .

INORGANIC CHEMISTRY, 1968, 7 (12) :2665-&

[5] Cucurbit[6]uril as ligand for the complexation of lanthanide cations in aqueous solution [J].

Buschmann, HJ ;

Jansen, K ;

Schollmeyer, E .

INORGANIC CHEMISTRY COMMUNICATIONS, 2003, 6 (05) :531-534

[6] Determination of complex stabilities with nearly insoluble host molecules: cucurbit[5]uril, decamethylcucurbit[5]uril and cucurbit[6]uril as ligands for the complexation of some multicharged cations in aqueous solution [J].

Buschmann, HJ ;

Cleve, E ;

Jansen, K ;

Schollmeyer, E .

ANALYTICA CHIMICA ACTA, 2001, 437 (01) :157-163

[7] Liquid phase oxidation reactions by peroxides in the presence of vanadium complexes [J].

Conte, V ;

DiFuria, F ;

Licini, G .

APPLIED CATALYSIS A-GENERAL, 1997, 157 (1-2) :335-361

[8] Structural and electron paramagnetic resonance studies of the square pyramidal to trigonal bipyramidal distortion of vanadyl complexes containing sterically crowded Schiff base ligands [J].

Cornman, CR ;

Geiser-Bush, KM ;

Rowley, SP ;

Boyle, PD .

INORGANIC CHEMISTRY, 1997, 36 (27) :6401-6408

[9] Cucurbit[6]uril/PVC-based semipermeable membranes as electrode modifiers for electrochemical investigation of insoluble substrates [J].

Correia, Henrique Dias ;

Demets, Gregoire Jean-Francois .

ELECTROCHEMISTRY COMMUNICATIONS, 2009, 11 (10) :1928-1931

[10] Controlling factors in the synthesis of cucurbituril and its homologues [J].

Day, A ;

Arnold, AP ;

Blanch, RJ ;

Snushall, B .

JOURNAL OF ORGANIC CHEMISTRY, 2001, 66 (24) :8094-8100

← 1 2 3 4 5 6 →