Saha, Koushik ; Ghorai, Sagar ; Kar, Sourav ; Saha, Suvam ; Halder, Rajarshi ; Raghavendra, Beesam ; Jemmis, Eluvathingal D. ; Ghosh, Sundargopal (2019) Stabilization of Classical [B2H5]‐: Structure and Bonding of [(Cp*Ta)2(B2H5)(µ‐H)L2] (Cp* = η5‐C5Me5; L = SCH2S) Angewandte Chemie International Edition, 58 (49). pp. 17684-17689. ISSN 1433-7851
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Official URL: http://doi.org/10.1002/anie.201911480
Related URL: http://dx.doi.org/10.1002/anie.201911480
Abstract
The room-temperature reaction of [Cp*TaCl4] with LiBH4⋅THF followed by addition of S2CPPh3 results in pentahydridodiborate species [(Cp*Ta)2(μ,η2:η2-B2H5)(μ-H)(κ2,μ-S2CH2)2] (1), a classical [B2H5]− ion stabilized by the binuclear tantalum template. Theoretical studies and bonding analysis established that the unusual stability of [B2H5]− in 1 is mainly due to the stabilization of sp2-B center by electron donation from tantalum. Reactions to replace the hydrogens attached to the diborane moiety in 1 with a 2 e {M(CO)4} fragment (M=Mo or W) resulted in simple adducts, [{(Cp*Ta)(CH2S2)}2(B2H5)(H){M(CO)3}] (6: M=Mo and 7: M=W), that retained the diborane(5) unit.
Item Type: | Article |
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Source: | Copyright of this article belongs to John Wiley & Sons, Inc. |
ID Code: | 123784 |
Deposited On: | 13 Oct 2021 09:36 |
Last Modified: | 13 Oct 2021 09:36 |
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