A new entry into ferraborane chemistry: Synthesis and characterization of heteroferraborane complexes
作者:K. Geetharani、Shubhankar Kumar Bose、Debajyoti Basak、Venkata M. Suresh、Sundargopal Ghosh
DOI:10.1016/j.ica.2010.12.033
日期:2011.6
Abstract Reaction of [CpFe(CO) 2 I], 1 (Cp = η 5 -C 5 H 5 ) and di(organyl)dichalcogenides, E2 R 2 (E = S, Se; R = Ph, CH 2 Ph, 2,6-( tBu) 2 -C 6 H 2 OH) with [LiBH 4 ·thf] at −70 °C in toluene, followed by stirring at room temperature for 18 h yielded heteroferraboranes, [CpFe(CO)B 2 H 4 (μ-L)], 2 – 4 ( 2 : L = SePh; 3 : SeCH 2 Ph and 4 : S(2,6-( tBu) 2 -C 6 H 2 OH). Compounds 2 – 4 are highly unstable
参见图8,我们所有试图分离纯净形式的硼前体[CpFe(CO)B 2 H 4(μ-TeC4 H 3 O)]的尝试都失败了。通过IR,1 H,11 B,13 C,77 Se,125 Te NMR和质谱确定每种情况下这些预测的准确性,并通过X射线晶体学进一步确定配合物8的结构。
Synthesis and characterization of bis(aryltelluro)methanes
作者:Libardo Torres C.
DOI:10.1016/0022-328x(90)85450-d
日期:1990.1
Synthesis and characterization of binuclear μ-oxo and μ-telluro molybdenum(V) complexes, [Cp∗Mo(O)(μ-Te)]2
Pyrolysis of an in-situ generated intermediate, produced in the reaction of [Cp*MoCl4], 1, (Cp* = eta(5)-C5Me5) with [LiBH4 center dot THF], with an excess of difuryl ditelluride in toluene at 90 degrees C yielded syn and anti isomers of [Cp*Mo(O)(mu-Te)](2) (2, 3) and [Cp*2Mo2O2(mu-O)(mu-Te)] (4, 5). In a similar fashion, dibenzyl diselenide yielded syn and anti isomers of [Cp*Mo(O)(mu-Se)](2) (6, 7), along with the known nido[(CP*Mo)(2)B4H8Se2]. Note that in parallel with 2-7, [(Cp*Mo)(2)B5H9] was isolated as the major product in both cases. Compounds 2-7 have been isolated in modest yield as orange to brown crystalline solids. All the new compounds have been characterized in solution by mass, IR, H-1, C-13, Se-77 and Te-125 NMR spectroscopy, and the structural types were unequivocally established by crystallographic analysis of 2-4 and 7. (C) 2011 Elsevier Ltd. All rights reserved.