A new entry into ferraborane chemistry: synthesis and characterization of heteroferraborane complexes

Geetharani, K. ; Bose, Shubhankar Kumar ; Basak, Debajyoti ; Suresh, Venkata M. ; Ghosh, Sundargopal (2011) A new entry into ferraborane chemistry: synthesis and characterization of heteroferraborane complexes Inorganica Chimica Acta, 372 (1). pp. 42-46. ISSN 0020-1693

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Official URL: http://www.sciencedirect.com/science/article/pii/S...

Related URL: http://dx.doi.org/10.1016/j.ica.2010.12.033

Abstract

Reaction of [CpFe(CO)2I], 1 (Cp = η5-C5H5) and di(organyl)dichalcogenides, E2R2 (E = S, Se; R = Ph, CH2Ph, 2,6-(tBu)2-C6H2OH) with [LiBH4·thf] at −70 °C in toluene, followed by stirring at room temperature for 18 h yielded heteroferraboranes, [CpFe(CO)B2H4 (μ-L)], 2–4 (2: L = SePh; 3: SeCH2Ph and 4: S(2,6-(tBu)2-C6H2OH). Compounds 2–4 are highly unstable and concurrent lose of boron atoms yielded organochalcogenolato-bridged complexes, [CpFe(CO)(μ-L)]2, 5–7, respectively (5: L = SePh; 6: SeCH2Ph and 7: S(2,6-(tBu)2-C6H2OH). In contrast, the reaction of 1 with di(2-furyl)ditelluride, (C4H3O)2Te2, yielded organotellurato-bridged complex, [CpFe(CO)(μ-TeC4H3O)]2, 8 and all of our attempts to isolate the boron precursor [CpFe(CO)B2H4 (μ-TeC4H3O)] in pure form failed. The accuracy of these predictions in each case is established by IR, 1H, 11B, 13C, 77Se, 125Te NMR and mass spectrometry and complex 8 is further structurally confirmed by X-ray crystallography.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
Keywords:Boron; Ferraborane; Chalcogenide Ligand; Selenium; Tellurium
ID Code:108912
Deposited On:31 Jan 2018 12:20
Last Modified:31 Jan 2018 12:20

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