Synthesis and structural characterization of (4,7-dioxaoctyl)phenyldichlorostannane and triphenyltin compounds containing various polyoxaalkyl moieties
作者:Martine Kemmer、Monique Biesemans、Marcel Gielen、Edward R.T Tiekink、Rudolph Willem
DOI:10.1016/s0022-328x(01)01088-9
日期:2001.9
The synthesis and characterization of (4,7-dioxaoctyl)triphenyltin (1), (4,7,10-trioxaundecyl)triphenyltin (2), (4,7,10,13-tetraoxatetradecyl)triphenyltin (3), and (4,7-dioxaoctyl)phenyldichlorostannane (4) are reported. Investigatons using 1H-, 13C-, and 119Sn-NMR, gradient assisted 2D 1H–13C HMBC and HMQC NMR, 1D 1H–119Sn HMQC NMR demonstrate that 1–3 are essentially tetracoordinated. By contrast
(4,7-二氧杂辛基)三苯基锡(1),(4,7,10-三氧杂十一烷基)三苯基锡(2),(4,7,10,13-四氧合巯基)三苯基锡(3)和(4)的合成和表征据报道有7,7-二氧杂辛基)苯基二氯锡烷(4)。使用Investigatons 1 H-,13 C-和119 Sn-NMR的,梯度辅助2D 1 H- 13 C ^ HMBC和HMQC NMR,1D 1 H- 119的Sn HMQC NMR表明13基本上四配位。相比之下,化合物4的结构X射线衍射法测定的,揭示了六配位,扭曲的八面体几何形状,其中4,7-二氧杂辛基配体是三齿的,C,O,O原子相对于锡的面排列。NMR研究表明,该结构存在于溶液中,但由于双环的开-闭机制而变得无效。