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

作者：Geetharani K; Bose Shubhankar Kumar; Basak Debajyoti; Suresh Venkata M; Ghosh Sundargopal^*

来源：Inorganica Chimica Acta, 2011, 372(1): 42-46.

DOI：10.1016/j.ica.2010.12.033

• Boron
• Ferraborane
• Chalcogenide ligand
• Selenium
• Tellurium

Reaction of [CpFe(CO)(2)I], 1 (Cp = eta(5)-C(5)H(5)) and di(organyl)dichalcogenides, E(2)R(2) (E = S, Se; R = Ph, CH(2)Ph, 2,6-((t)Bu)(2)-C(6)H(2)OH) with [LiBH(4)center dot thf] at -70 degrees C in toluene, followed by stirring at room temperature for 18 h yielded heteroferraboranes, [CpFe(CO)B(2)H(4)(mu-L)], 2-4 (2: L = SePh; 3: SeCH(2)Ph and 4: S(2,6-((t)Bu)(2)-C(6)H(2)OH). Compounds 2-4 are highly unstable and concurrent lose of boron atoms yielded organochalcogenolato-bridged complexes, [CpFe(CO)(mu-L)](2), 5-7, respectively (5: L = SePh; 6: SeCH(2)Ph and 7: S(2,6-((t)Bu)(2)-C(6)H(2)OH). In contrast, the reaction of 1 with di(2-furyl)ditelluride, (C(4)H(3)O)(2)Te(2), yielded organotellurato-bridged complex, [CpFe(CO)(mu-TeC(4)H(3)O)](2), 8 and all of our attempts to isolate the boron precursor [CpFe(CO)B(2)H(4)(mu-TeC(4)H(3)O)] in pure form failed. The accuracy of these predictions in each case is established by IR, (1)H, (11)B, (13)C, (77)Se, (125)Te NMR and mass spectrometry and complex 8 is further structurally confirmed by X-ray crystallography.

• 出版日期2011-6-15