1. Heterodimetallaboranes of Group 4 and 9 Metals: Analogues of Pentaborane(11) and Hexaborane(12).
- Author
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Roy, Dipak Kumar, De, Anangsha, Prakash, Rini, Barik, Subrat Kumar, and Ghosh, Sundargopal
- Subjects
BORANES ,CHEMICAL reactions ,BORON compounds ,CHEMICAL bonds ,HYDRIDES ,CHEMICALS - Abstract
Several early-late heterodimetallaborane clusters have been isolated and structurally characterized through spectroscopic and crystallographic analysis. The thermolysis of [Cp
2 Zr(BH4 )2 ] (Cp = η5 -C5 H5 ) with [Cp*IrB3 H9 ] (Cp* = η5 -C5 Me5 ) and [(Cp*Rh)2 B2 H6 ] yielded arachno-[(Cp2 Zr)(Cp*Ir)B3 H9 ] ( 2) and arachno-[(Cp2 Zr)(Cp*Rh)B4 H10 ] ( 4), respectively. In a similar fashion, the reaction of [Cp2 Hf(BH4 )2 ] was performed with the same set of group 9 metallaboranes that led to the formation of arachno-[(Cp2 Hf)(Cp*M′)B4 H10 ] ( 5: M′ = Ir; 6: M′ = Rh). To the best of our knowledge, 2 is the first structurally characterized pentaborane(11) analogue containing zirconium, while the clusters 5 and 6 are the first examples with Hf in a hexaborane(12) core. The bonding between the Zr atoms and the boron ring was studied computationally by DFT methods, and 2 can be defined as a dimetallic analogue of arachno-B5 H11 on the basis of the combined experimental and computational results. [ABSTRACT FROM AUTHOR]- Published
- 2017
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