(tris(trimethylsilyl)silyl)triphenylplumbane | 147133-23-1

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: (tris(trimethylsilyl)silyl)triphenylplumbane
• CAS: 147133-23-1
• 化学式: C₂₇H₄₂PbSi₄
• 分子量: 686.172
• InChiKey: KEZSLMXULKNXKO-UHFFFAOYSA-N

物化性质

• 沸点：
  513.9±33.0 °C(predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  5.93
• 重原子数：
  32.0
• 可旋转键数：
  7.0
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.33
• 拓扑面积：
  0.0
• 氢给体数：
  0.0
• 氢受体数：
  0.0

反应信息

• 作为产物：
  描述：

  氯化三苯基铅 、 tris(trimethylsilyl)silyl lithium * 3 tetrahydrofuran 以 乙醚 为溶剂， 以80.8%的产率得到(tris(trimethylsilyl)silyl)triphenylplumbane
  参考文献：
  名称：

  [Tris(trimethylsilyl)silyl]lead(IV) derivatives

  摘要：

  The reaction of Ph3PbCl with 1 equiv of (THF)3LiSi(SiMe3)3 in ether afforded Ph3PbSi(SiMe3)3 in high yield. Our attempts to prepare Ph2Pb(Si(SiMe3)3)2 through a similar reaction of Ph2PbCl2 with 2 equiv of (THF)3LiSi(SiMe3)3 gave a mixture of the expected product, a pale yellow solid, and [Ph2PbSi(SiMe3)3]2, a bright yellow-orange, thermochromic solid. These products were separated by fractional crystallization from the reaction mixture and characterized by their elemental analyses, NMR spectra (H-1, C-13), and infrared and UV-visible spectra. In order to compare [Ph2PbSi(SiMe3)3]2 with its previously reported digermane counterpart, an X-ray structured determination was carried out on the product as a benzene monosolvate. Crystals of [Ph2PbSi(SiMe3)3]2 were monoclinic, P2(1)/n, with a = 13.208(2) angstrom, b = 16.586(3) angstrom, c = 13.896(3) angstrom, beta = 99.29-degrees, V = 3004 angstrom3, and Z = 2. The molecular structure confirmed that the product is indeed a diplumbane exhibiting a Pb-Pb bond 2.911 (1) angstrom in length. All three products were unreactive toward atmospheric moisture. NMR studies of Ph2Pb(Si(SiMe3)3)2 and [Ph2PbSi(SiMe3)3]2 solutions in ether showed the former to be stable for at least 22 h while the latter decomposed completely within the same period.

  DOI：

  10.1021/ic00057a019