Hexa(tert-butoxy)dimolybdenum(III) is a coordination complex of molybdenum(III). It is one of the homoleptic alkoxides of molybdenum. An orange, air-sensitive solid, the complex has attracted academic attention as the precursor to many organomolybdenum derivatives. It an example of a charge-neutral complex featuring a molybdenum to molybdenum triple bond (Mo≡Mo), arising from the coupling of a pair of d3 metal centers. It can be prepared by a salt metathesis reaction from the THF complex of molybdenum trichloride and lithium tert-butoxide:[1]
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| Identifiers | |
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3D model (JSmol)
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CompTox Dashboard (EPA)
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| Properties | |
| C24H54Mo2O6 | |
| Molar mass | 630.59 g·mol−1 |
| Appearance | orange solid |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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- 2 MoCl3(thf)3 + 6 LiOBu-t → Mo2(OBu-t)6 + 6 LiCl + 6 thf
The complex and its ditungsten (W2) analogue adopt an ethane-like geometry. The metal to metal bond distance is 222 pm in the related complex Mo2(OCH2CMe3)6.[2]
See also
editReferences
edit- ^ Broderick, Erin M.; Browne, Samuel C.; Johnson, Marc J. A. (2014). Dimolybdenum and Ditungsten Hexa(Alkoxides). Inorganic Syntheses. Vol. 36. pp. 95–102. doi:10.1002/9781118744994.ch18. ISBN 9781118744994.
- ^ Chisholm, Malcolm H.; Cotton, F. Albert.; Murillo, Carlos A.; Reichert, William W. (1977). "The molybdenum-molybdenum triple bond. 2. Hexakis(alkoxy)dimolybdenum compounds: Preparation, properties and structural characterization of hexakis(neopentoxy)dimolybdenum". Inorganic Chemistry. 16 (7): 1801–1808. doi:10.1021/ic50173a045.