[Pt4(OAc)6(3,2,3-tet)](2+) | 198413-82-0

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: [Pt4(OAc)6(3,2,3-tet)](2+)
• CAS: 198413-82-0
• 化学式: C₂₀H₄₀N₄O₁₂Pt₄
• 分子量: 1308.88
• InChiKey: QPKMAGHXCMVPIK-UHFFFAOYSA-H

计算性质

• 辛醇/水分配系数(LogP)：
  None
• 重原子数：
  None
• 可旋转键数：
  None
• 环数：
  None
• sp3杂化的碳原子比例：
  None
• 拓扑面积：
  None
• 氢给体数：
  None
• 氢受体数：
  None

反应信息

• 作为反应物：
  描述：

  乙酸-D3 、 [Pt4(OAc)6(3,2,3-tet)](2+) 以 氘代乙腈 为溶剂， 生成
  参考文献：
  名称：

  Synthesis and property of pentakis (μ-acetato-O,O′) (linear-hexamine)tetraplatinum(II), [Pt4(μ-acetato-O,O′)5(L)]3+; correlation between rate of in-plane acetate ligand exchange and catalytic activity for hydration of acetonitrile

  摘要：

  Three new hexadentate polyamine ligands (L), their acetate bridged tetranuclear platinum complexes, [Pt-4(mu-CH3COO)(5)(L)](3+) (L-3 = 1,5,8,11,14,18-hexaazaoctadecane (3), L-5 = 1,11-bis(2-pyridylmethyl)-1,4,8,11-tetraazaundecane (5), L-6 = N,N'-bis(((2-pyridyl methyl) amino) ethyl) piperazine (6), and the same type of Pt-4 complex with L-4 = 1,710-bis(2-pyridylmethyl)-1,4,7,10-tetraazadecane) (4) were prepared. Single crystal X-ray analysis of 6(ClO4)(3) . 2C(4)H(6)O(3) . CHCl3 shows that the hexamine ligand with the sequence of the bridge-chelate-bridge-chelate-bridge mode and one acetate occupy coordination sites in the plane of the cluster. Crystal data: triclinic space group P (1) over bar, a = 14.001 (4), b = 19.029(3), c = 12.562(3) Angstrom, alpha = 100.23(2), beta = 113.9(2), gamma = 77.60(2)., V = 2972(1) Angstrom(3), Z = 2. Ligand exchange rates of the in-plane acetate ligand in these complexes were determined by means of H-1 NMR in CD3CN at 25 degrees C: k = 1.2 X 10(-2) for 3, 1.4 X 10(-4) for 4, 8.7 X 10(-6) for 5, 1.2 X 10(-6) mol(-1) kg s(-1) for 6. All the Pt-4 complexes show, to some extent, catalytic activity for hydration of acetonitrile to give acetamide: turnover number per hour under experimental conditions was 0.51 for 3, 0.46 for 4, 0.09 for 5, and 0.09 for 6, respectively. It was found, for the series of compounds including [Pt-4(mu-CH3COO)(8)] and [Pt-4(mu-CH3COO)(6)(3,2,3-tet)], that a qualitatively positive correlation holds between the ligand exchange rate and the catalytic activity, that is, the faster the ligand exchange, the higher the catalytic activity in general. This fact indicates that the catalytic activity is associated with the lability of coordination sites trans to the Pt-Pt bond. (C) 1997 Elsevier Science S.A.

  DOI：

  10.1016/s0020-1693(97)05711-3