Synthesis and structure of titanium(IV) amido complexes containing C2-symmetric bis(sulfonamide) ligands

被引:65
作者
Armistead, LT [1 ]
White, PS [1 ]
Gagne, MR [1 ]
机构
[1] Univ N Carolina, Dept Chem, Chapel Hill, NC 27599 USA
关键词
D O I
10.1021/om9709392
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
Mixed-amido Ti(IV) compounds of the type Ti(NR'(2))(2)[N(SO2R)CHPhCHPhN(SO2R)] (R' = Me, Et; R = p-C6H3CH3, p-C6H4C(CH3)(3), CF3) were synthesized by the aminolysis of Ti(NR'(2))(4) with bis(sulfonamide) ligands 1a-c. The structure of compound 3b, determined by X-ray crystallography, indicates that une oxygen from a single SO2 group binds to the metal center in the solid state, breaking the C-2 symmetry. These Ti-bis(sulfonamide) complexes, when treated with 2,6-dimethylphenol, generate putative Ti(OAr)(2)(bis(sulfonamide)) intermediates which display unorthodox disproportionation behavior.
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页码:216 / 220
页数:5
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