Majumdar, Moumita ; Patra, Sanjib K. ; Bera, Jitendra K. (2007) Oxidative route to polyoxomolybdates from quadruply bonded [MoII≣MoII] precursor: Structural characterization of a tetranuclear cluster [Mo4Cl5O8(pyNP)2] (pyNP=(2-(2-pyridyl)1,8-naphthyridine)) Polyhedron, 26 (8). pp. 1597-1602. ISSN 0277-5387
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Official URL: http://www.sciencedirect.com/science/article/pii/S...
Related URL: http://dx.doi.org/10.1016/j.poly.2006.11.042
Abstract
Aerial oxidation of the quadruply bonded Mo2(OAc)4 in the presence of HprNP (2-(2-pyrrolyl)-1,8-naphthyridine) in CH2Cl2 provide the dinuclear oxochloromolybdate [Mo2O2Cl2(μ2-O)2(HprNP)2] (1). The molecular structure of 1 consists of the [Mo2O2Cl2(μ2-O)2] core with the cisoid Mo=O bonds and each HprNP ligand chelating the Mo center through the naphthyridine unit. An alternate route to access oxomolybdates is to employ quadruply bonded [Re2Cl8]2- to oxidize cis-[Mo2(pyNP)2(OAc)2][BF4]2 (pyNP = 2-(2-pyridyl)1,8-naphthyridine). The isolated compound is the tetranuclear molybdenum cluster [Mo4Cl5O8(pyNP)2] (2). The molecular formula of compound 2 is best described as [Mo2Cl3O2(μ2-O)(η3-pyNP)][μ3-O][Mo2Cl2O2(μ2-O)2(η2-pyNP)], the fusion of two oxochlorodimolybdates linked through a μ3-oxo linkage. The oxidation of the [MoII≣MoII] unit to highly oxidized oxomolybdates and subsequent dimerization to tetranuclear core offers prospect for accessing new types of oxo-chloro-molybdenum clusters exhibiting interesting structural motifs.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| Keywords: | Polyoxomolybdate; Mo(V,VI) Compounds; Octachlorodirhenate; Tetranuclear Compounds |
| ID Code: | 100185 |
| Deposited On: | 27 Nov 2016 13:24 |
| Last Modified: | 27 Nov 2016 13:24 |
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