(indenyl)3La((R)-(+)-methyl-p-tolylsulphoxide) | 241812-26-0

• 英文名称: (indenyl)3La((R)-(+)-methyl-p-tolylsulphoxide)
• CAS: 241812-26-0
• 化学式: C₃₅H₃₁LaOS
• 分子量: 638.602
• InChiKey: GFZAFJHMXGMHEG-OOGJKSSBSA-N

反应信息

• 作为产物：
  描述：

  (R)-(+)-甲基对甲苯砜 、 以 甲苯 为溶剂， 以80%的产率得到(indenyl)3La((R)-(+)-methyl-p-tolylsulphoxide)
  参考文献：
  名称：

  Tris(indenyl) lanthanum(III) derivatives with two stereogenic centres: crystal structures and solution NMR spectroscopy of the adducts [(C9H7)3La · L] with L = (R)-(+)-methyl-p-tolylsulphoxide and triphenylphosphinoxide

  摘要：

  Three new adducts of the type [(C9H7)(3)La . L] with L = (R)-(+)-methyl-p-tolylsulphoxide 1, triphenylphosphinoxide 2 and diphenylsulphoxide 3 have been prepared and further characterized. The crystal structures of 1 and 2 were determined from single crystals. 1 crystallizes as one distinct epimeric form with two 'equatorially' and one 'meridionally' oriented C9H7 ligands. Space group P2(1); cell parameters a = 838.30(10), b = 966.5(3), c = 1770.5(7)pm, beta = 90.82(2)degrees. Crystals of 2 contain two crystallographically equivalent diastereomers with three disordered but essentially 'equatorial' C9H7 ligands. The P(C6H5)(3) propellers adopt either of two possible enantiomorphic configurations. Space group R (3) over bar; cell parameters a = b = 1451.1(3), c = 3136.6(7)pm. The solution H-1 NMR spectra of 1-3 clearly reflect rapid intramolecular motion of the C9H7 ligands. The quasi-first-order spectrum of 1 is indicative of significant diastereotopic splitting, displaying a total of seven individual C9H7 proton resonances.

  DOI：

  10.1016/s0022-328x(96)06750-2