作者:Thorsten Kreickmann、Christian Diedrich、Tania Pape、Han Vinh Huynh、Stefan Grimme、F. Ekkehardt Hahn
DOI:10.1021/ja063655u
日期:2006.9.1
enantiomerically pure chiral ligand 3(4)(-) shows a strong Cotton effect in the CD spectrum, indicating that the chirality of the ligands leads to the formation of chiral metal centers. The o-phenylene diamine bridged bis(benzene-o-dithiol) ligand H(4)-4 reacts with Ti(4+) to give the dinuclear double-stranded complex Li(2)[Ti(2)(4)(2)(mu-OCH(3))(2)] containing two bridging methoxy ligands between the metal centers
双(苯-邻二硫醇)配体 H(4)-1、H(4)-2 和 H(4)-3 与 [Ti(OC(2)H(5))(4)] 反应生成给出双核三链螺旋 [Ti(2)L(3)](4)(-) (L = 1(4)(-), 2(4)(-), 3(4)(-))。核磁共振波谱研究表明,复杂的阴离子在溶液中具有 C(3) 对称性。(PNP)(4)[Ti(2)(2)(3)] ((PNP)(4)[14]) 的晶体结构分析证实了固态复合阴离子的 C(3) 对称性。Li(PNP)(3)[Ti(2)(1)(3)] (Li(PNP)(3)[13]) 中的复合阴离子在固态下不表现出 C(3) 对称性,因为锂桥接复合阴离子聚合物链的形成。复合物[13](4)(-)和[14](4)(-)作为Delta,Delta和Lambda,Lambda异构体的外消旋混合物获得。相比之下,配合物 (PNP)(4)[Ti(2)(3)(3)] ((PNP)(4)[15])