Condensed tantalaborane clusters: synthesis and structures of [(Cp*Ta)<sub>2</sub>B<sub>5</sub>H<sub>7</sub>{Fe(CO)<sub>3</sub>}<sub>2</sub>] and [(Cp*Ta)<sub>2</sub>B<sub>5</sub>H<sub>9</sub>{Fe(CO)<sub>3</sub>}<sub>4</sub>]
- Bose, Shubhankar Kumar
- Geetharani, K.
- Varghese, Babu
- Ghosh, Sundargopal
DOIAbstract
The reaction of [(Cp*Ta)<sub>2</sub>B<sub>4</sub>H<sub>9</sub>(μ-BH<sub>4</sub>)] (1; Cp* = η<sup>5</sup>-C<sub>5</sub>Me<sub>5</sub>) with [Fe<sub>2</sub>(CO)<sub>9</sub>] in hexane yielded [(Cp*Ta)<sub>2</sub>B<sub>5</sub>H<sub>7</sub>{Fe(CO)<sub>3</sub>}<sub>2</sub>] (2) and [(Cp*Ta)<sub>2</sub>B<sub>5</sub>H<sub>9</sub>{Fe(CO)<sub>3</sub>}<sub>4</sub>] (3) in moderate yield. Cluster 2 represents the first example of a bicapped pentagonal-bipyramidal metallaborane with a deformed equatorial plane, and 3 can be described as a fused cluster in which two pentagonal-bipyramidal units are fused through a common 3-vertex triangular face. Compounds 2 and 3 have been characterized by mass spectrometry and IR, <sup>1</sup>H, <sup>11</sup>B, and <...
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