Hybrid Dibismuthines and Distibines: Preparation and Properties of Antimony and Bismuth Oxygen, Sulfur, and Nitrogen Donor Ligands
作者:Sophie L. Benjamin、Louise Karagiannidis、William Levason、Gillian Reid、Michael C. Rogers
DOI:10.1021/om1010148
日期:2011.2.28
but for the other dibismuthine complexes, there is evidence for inequivalence of the iron centers (and hence hypervalency) only in the solid state. Spectroscopic data indicate that hypervalent interactions are absent in [CpFe(CO)2}2MeN(CH2-2-C6H4SbMe2)2}][BF4]2 and [CpFe(CO)2}2S(CH2-2-C6H4SbMe2)2}][BF4]2, but present in solid [CpFe(CO)2}2O(CH2)2SbR2}2}][BF4]2. The preparation and X-ray structure
杂二双变蛋白O (CH 2)2 BiPh 2 } 2,MeN(CH 2 -2-C 6 H 4 BiR 2)2和S(CH 2 -2-C 6 H 4 BiR 2)2(R = Me,Ph)已通过微分析,1 H和13 C 1 H} NMR光谱和FAB质谱进行了制备和表征。O (CH 2)2 BiPh 2 } 2和S(CH 2 -2-C6 H 4 BiPh 2)2显示O或S原子与两个铋中心之间接近对称的高价相互作用。锑类似物S(CH 2 -2-C 6 H 4 SbMe 2)2通过MeI季铵化为[S(CH 2 -2-C 6 H 4 SbMe 3)2 ] I 2,它也显示出高价S· ··Sb相互作用,但在这种情况下只有一个锑中心。这些和相关配体与[CpFe(CO)2 }类型的CpFe(CO)2 +基团的配合物2 L] [BF 4 ] 2(L = O (CH 2)2 BiPh 2 } 2,MeN(CH
Hybrid dibismuthines and distibines as ligands towards transition metal carbonyls
作者:Sophie L. Benjamin、William Levason、Gillian Reid、Michael C. Rogers
DOI:10.1039/c1dt10447k
日期:——
O(CH2CH2BiPh2)2 and MeN(CH2-2-C6H4BiPh2)2 react with [M(CO)5(thf)] (M = Cr or W) to form [M(CO)5}2O(CH2CH2BiPh2)2}] and [Cr(CO)5}2MeN(CH2-2-C6H4BiPh2)2}] containing bridging bidentate (Bi2) coordination. The unsymmetrical tertiary bismuthine complexes [M(CO)5BiPh2(o-C6H4OMe)}] are also described. Depending upon the molar ratio, the hybrid distibines O(CH2CH2SbMe2)2 and MeN(CH2-2-C6H4SbMe2)2 react with