benzene;bis[di(propan-2-yl)phosphanylmethyl-dimethylsilyl]azanide;cyclopenta-1,3-diene;scandium(3+) | 299939-11-0

• 分子结构分类: 有机化合物
• 英文名称: benzene;bis[di(propan-2-yl)phosphanylmethyl-dimethylsilyl]azanide;cyclopenta-1,3-diene;scandium(3+)
• CAS: 299939-11-0
• 化学式: C₂₉H₅₄NP₂ScSi₂
• 分子量: 579.829
• InChiKey: NHYPCRLJJRNBBK-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  10.34
• 重原子数：
  35
• 可旋转键数：
  10
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.62
• 拓扑面积：
  1
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为产物：
  描述：

  、 苯基锂 以 乙醚 、 甲苯 为溶剂， 以32%的产率得到benzene;bis[di(propan-2-yl)phosphanylmethyl-dimethylsilyl]azanide;cyclopenta-1,3-diene;scandium(3+)
  参考文献：
  名称：

  Synthesis, characterization, and reactivity of scandium chloro, alkyl, aryl, and borohydride comple×es, Sc(η⁵-C₅H₅)R[N(SiMe₂CH₂PⁱPr₂)₂] (R = Cl, Me, Ph, and BH₄)

  摘要：

  Reaction of ScCl2(THF)[N((SiMe2CH2PPr2)-Pr-i)(2)] with NaCp(DME) leads to Sc(eta(5)-C5H5)Cl[N((SiMe2CH2PPr2)-Pr-i)(2)] (1). The X-ray crystal structure shows the scandium centre to reside in a square pyramidal environment with the [N((SiMe2CH2PPr2)-Pr-i)(2)] - ligand bound in a pseudo-meridional fashion. The H-1 NMR spectrum is consistent with a C-s symmetric structure in solution. Metathesis of the chloride ligand with RLi (R = Me, Ph, BH4) yields the five-coordinate species Sc(eta(5)-C5H5)R[N((SiMe2CH2PPr2)-Pr-i)(2)]. Phenyl 3 and borohydride 4 are isolated as crystalline solids, while methyl 2 resisted crystallization. 2-4 exhibit H-1 NMR spectra consistent with C-s symmetric solution structures. Sc(eta(5)-C5H5)Ph[N((SiMe2CH2PPr2)-Pr-i)(2)] (3) was characterized in the solid state and found to have a similar geometry to that of the parent chloride. Reaction of Sc(eta(5)-C5H5)Me[N((SiMe2CH2PPr2)-Pr-i)(2)] (2) with NH2R (R = Ph, Bu-t) yields the amides Sc(eta(5)-C5H5)NHPh[N((SiMe2CH2PPr2)-Pr-i)(2)] (5) and Sc(eta(5)-C5H5)(NHBu)-Bu-t- [N((SiMe2CH2PPr2)-Pr-i)(2)] (6) via sigma-bond metathesis routes; these reactions are accompanied by a competing reaction at the scandium-amide bond to produce the protonated ligand, HN((SiMe2CH2PPr2)-Pr-i)(2) 5 and 6 are also produced by salt-elimination from the chloride 1 and LiNHR (R = Ph, Bu-t). Sc(eta(5)-C5H5)(BH4)[N((SiMe2CH2PPr2)-Pr-i)(2)] (4) reacts with PMe3 to produce the putative hydride, Sc(eta(5)-C5H5)H[N((SiMe2CH2PPr2)-Pr-i)(2)] (7); this species was identified in solution. An equilibrium between 4, PMe3, 7, and PMe3,BH3 exists which greatly favors the starting scandium-borohydride. Crystals of Sc(eta(5)-C5H5)Cl[N((SiMe2CH2PPr2)-Pr-i)(2)] (1) are monoclinic, a = 17.409(2), b = 10.0803(7), c = 17.688(2) A, beta = 94.606(8) degrees, Z = 4, space group P2(1)/c; and those of Sc(eta(5)-C5H5)Ph[N((SiMe2CH2PPr2)-Pr-i)(2)] (3) are triclinic, a = 10.5129(15), b = 19.124(2), c = 9.114(2) A, alpha = 95.582(13), beta = 107.047(12), gamma = 90.042(11)degrees, Z = 2, space group P. The structures were solved by Patterson (1) and direct (3) methods and refined by full-matrix least-squares procedures to R = 0.047 and 0.054 (R-w = 0.042 and 0.049) for 2414 and 2844 reflections with I greater than or equal to 3 sigma(I), respectively.

  DOI：

  10.1139/cjc-78-7-1003