Synthesis and Structural Elucidation of Triazolylmolybdenum(VI) Oxide Hybrids and Their Behavior as Oxidation Catalysts

Lysenko, Andrey B.; Senchyk, Ganna A.; Domasevitch, Konstantin V.; Hauser, Jürg; Fuhrmann, Daniel; Kobalz, Merten; Krautscheid, Harald; Neves, Patrícia; Valente, Anabela A.; Gonçalves, Isabel S. (2015). Synthesis and Structural Elucidation of Triazolylmolybdenum(VI) Oxide Hybrids and Their Behavior as Oxidation Catalysts. Inorganic chemistry, 54(17), pp. 8327-8338. American Chemical Society 10.1021/acs.inorgchem.5b01007

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A large family of bifunctional 1,2,4-triazole molecular tectons (tr) has been explored for engineering molybdenum(VI) oxide hybrid solids. Specifically, tr ligands bearing auxiliary basic or acidic groups were of the type amine, pyrazole, 1H-tetrazole, and 1,2,4-triazole. The organically templated molybdenum(VI) oxide solids with the general compositions [MoO3(tr)], [Mo2O6(tr)], and [Mo2O6(tr)(H2O)2] were prepared under mild hydrothermal conditions or by refluxing in water. Their crystal structures consist of zigzag chains, ribbons, or helixes of alternating cis-{MoO4N2} or {MoO5N} polyhedra stapled by short [N–N]-tr bridges that for bitriazole ligands convert the motifs into 2D or 3D frameworks. The high thermal (235–350 °C) and chemical stability observed for the materials makes them promising for catalytic applications. The molybdenum(VI) oxide hybrids were successfully explored as versatile oxidation catalysts with tert-butyl hydroperoxide (TBHP) or aqueous H2O2 as an oxygen source, at 70 °C. Catalytic performances were influenced by the different acidic–basic properties and steric hindrances of coordinating organic ligands as well as the structural dimensionality of the hybrid.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Departement of Chemistry and Biochemistry

UniBE Contributor:

Hauser, Jürg

Subjects:

500 Science > 570 Life sciences; biology
500 Science > 540 Chemistry

ISSN:

0020-1669

Publisher:

American Chemical Society

Language:

English

Submitter:

Jürg Hauser

Date Deposited:

01 Dec 2015 11:57

Last Modified:

03 Dec 2015 10:06

Publisher DOI:

10.1021/acs.inorgchem.5b01007

BORIS DOI:

10.7892/boris.73243

URI:

https://boris.unibe.ch/id/eprint/73243

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