| 174682-78-1

• CAS: 174682-78-1
• 化学式: C₆H₁₂N₂*C₂₁H₁₅CoO₃P*H
• 分子量: 518.498
• InChiKey: XVPBIIHHQKYZCA-UHFFFAOYSA-O

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

• 作为产物：
  描述：

  三乙烯二胺 、 三苯基膦 、 cobalt tetracarbonyl hydride 以 甲苯 为溶剂， 生成
  参考文献：
  名称：

  Strengthening of N−H···Co Hydrogen Bonds upon Increasing the Basicity of the Hydrogen Bond Acceptor (Co)

  摘要：

  Low temperature crystal structures of (DABCO)H+Co(CO)(4)(-) (1) and (DABCO)H+Co-(CO)(3)PPh(3)(-) (2) (DABCO = 1,4-diazabicyclooctane) indicate that both salts exhibit N-H ... Co hydrogen bonding. IR and NMR data indicate that these hydrogen bonded species persist in nonpolar solvents such as toluene, but exist as solvent separated ions in more polar solvents. Replacement of the axial CO ligand by PPh(3) leads to a shortening of the N ... Co separation in the solid state from 3.437(3) to 3.294(6) Hi. This change is accompanied by an increase in the angle between the equatorial carbonyl ligands. Thus, the crystallographic results suggest: a strengthening of the N-H ... Co hydrogen bond upon increasing the basicity of the metal center, the first observation of this type in the solid state. This assertion is supported by variable-temperature H-1 and C-13 NMR data in toluene-d(8) solution which, discussed in the light of ab initio calculations, indicate that the barrier to a fluxional process involving cleavage of the N-H ... Co hydrogen bond is greater in 2 than in 1. The crystal structures of 1 and 2 have been determined by X-ray diffraction at 135(5) and 123(5) K, respectively [1 monoclinic, P2(1)/n. (No. 14), a = 8.728(2), b = 23.333(5), c = 12.146(2) Angstrom, beta = 95.74(2)degrees, V = 2461.1(9) Angstrom(3), Z = 8; R(F) = 0.043, R(w)(F) = 0.043, S(F) = 1.21: 2 orthorhombic, Pca2(1) (No. 29), a 16.084(8), b = 8.874(3), c 17.312(3) Angstrom, V = 2471(1) Angstrom(3), Z = 4, R(F) = 0.065, R(w)(F) = 0.060, S(F) = 1.16].

  DOI：

  10.1021/om950777e