Hexa(tert-butoxy)dimolybdenum(III)

Identifiers

CAS Number

* 51956-21-9

3D model (JSmol)

* Interactive image

InChI

* InChI=1S/6C4H9O.2Mo/c6*1-4(2,3)5;;/h6*1-3H3;;/q6*-1;2*+3

Key: ZOGMSHNHMHVRRN-UHFFFAOYSA-N

SMILES

* CC(C)(C)O[Mo](#[Mo](OC(C)(C)C)(OC(C)(C)C)OC(C)(C)C)(OC(C)(C)C)OC(C)(C)C

Properties

Chemical formula

| 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).

Infobox references

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]

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

* Hexa(tert-butoxy)ditungsten(III)

## References

1. ↑ Broderick, Erin M.; Browne, Samuel C.; Johnson, Marc J. A. (2014). Dimolybdenum and Ditungsten Hexa(Alkoxides). Inorganic Syntheses. 36. pp. 95–102. doi:10.1002/9781118744994.ch18. ISBN 9781118744994.
2. ↑ 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.

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Molybdenum compounds

Mo(0)|

* Mo(CO)6

Mo(II)|

* MoBr2
* MoCl2
* MoSi2

Mo(III)|

* MoBr3
* MoCl3
* MoI3
* Mo2O3

Mo(IV)|

* MoCl4
* MoF4
* MoO2
* MoS2

Mo(V)|

* MoCl5
* MoF5
* Mo2O5

Mo(VI)|

* MoF6
* MoO3
* MoS3

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