New routes to a series of σ-borane/borate complexes of molybdenum and ruthenium

Ramalakshmi, Rongala ; Saha, Koushik ; Roy, Dipak Kumar ; Varghese, Babu ; Phukan, Ashwini K. ; Ghosh, Sundargopal (2015) New routes to a series of σ-borane/borate complexes of molybdenum and ruthenium Chemistry - A European Journal, 21 (48). pp. 17191-17195. ISSN 0947-6539

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Official URL: http://onlinelibrary.wiley.com/doi/10.1002/chem.20...

Related URL: http://dx.doi.org/10.1002/chem.201503404

Abstract

A series of agostic σ-borane/borate complexes have been synthesized and structurally characterized from simple borane adducts. A room-temperature reaction of [Cp*Mo(CO)3Me], 1 with Li[BH3(EPh)] (Cp*=pentamethylcyclopentadienyl, E=S, Se, Te) yielded hydroborate complexes [Cp*Mo(CO)2(μ-H)BH2EPh] in good yields. With 2-mercapto-benzothiazole, an N,S-carbene-anchored σ-borate complex [Cp*Mo(CO)2BH3(1-benzothiazol-2-ylidene)] (5) was isolated. Further, a transmetalation of the B-agostic ruthenium complex [Cp*Ru(μ-H)BHL2] (6, L=C7H4NS2) with [Mn2(CO)10] affords a new B-agostic complex, [Mn(CO)3 (μ-H)BHL2] (7) with the same structural motif in which the central metal is replaced by an isolobal and isoelectronic [Mn(CO)3] unit. Natural-bond-orbital analyses of 5–7 indicate significant delocalization of the electron density from the filled σB—H orbital to the vacant metal orbital.

Item Type:Article
Source:Copyright of this article belongs to John Wiley & Sons, Inc.
Keywords:Agostic Boranes; Heterocyclic Carbene; Molybdenum; Ruthenium; σ-Borates
ID Code:108817
Deposited On:31 Jan 2018 11:56
Last Modified:31 Jan 2018 11:56

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