| 255366-88-2

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 磷环化合物
• CAS: 255366-88-2；877138-18-6
• 化学式: C₁₄H₃₇P₄Pt
• 分子量: 524.423
• InChiKey: IABFAENRVARRJM-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  5.45
• 重原子数：
  19.0
• 可旋转键数：
  0.0
• 环数：
  2.0
• sp3杂化的碳原子比例：
  1.0
• 拓扑面积：
  0.0
• 氢给体数：
  0.0
• 氢受体数：
  0.0

反应信息

• 作为反应物：
  描述：

  以 氘代乙腈 、 苯甲腈 为溶剂， 生成 [nickel(0)(1,2-bis(diethylphosphino)ethane)₂]
  参考文献：
  名称：

  [HM(diphosphine)2]PF6 复合物 (M = Pt, Ni) 的相对氢化物、质子和氢原子转移能力

  摘要：

  为测定 [HM(diphosphine)2]X 的相对热力学氢度，制备了一系列 [M(diphosphine)2]X2、[HM(diphosphine)2]X 和 M(diphosphine)2 配合物络合物（M = Ni、Pt；X = BF4、PF6；二膦=双（二苯基膦）乙烷（dppe）、双（二乙基膦）乙烷（depe）、双（二甲基膦）乙烷（dmpe）、双（二甲基膦）丙烷（dmpp） ))。M(II) 和 M(0) 配合物的半波电位 (E1/2) 测量值和金属氢化物配合物的 pKa 测量值已用于热化学循环，以获得有关相对氢化物供体能力的定量热力学信息金属氢化物络合物。氢化物供体强度变化为 23 kcal/mol，并受金属、配体取代基、和二膦配体螯合的大小。所制备的配合物的最佳氢化物供体是[HPt(dmpe)2](PF6)，一种具有碱性取代基的第三排过渡金属和具有短链的二膦配体。

  DOI：

  10.1021/ja991888y
• 作为产物：
  描述：

  [Pt(1,2-bis(dimethylphosphino)propane)2](hexafluorophosphate)2 、 氢气 在 triethylamine 、 triethylammonium tetrafluoroborate 作用下， 以 氘代乙腈 为溶剂， 生成
  参考文献：
  名称：

  HRh(dppb)₂, a Powerful Hydride Donor

  摘要：

  The Rh(I) and Rh(III) hydrides HRh(dppb)(2) and [HRh(dppb)(2)(NCCH3)](BF4)(2) (where dppb is 1,2-(bis(diphenylphosphino)benzene) have been prepared, and a structural study of [HRh(dppb)2(NCCH3)](BF4)2 has been completed. The latter complex is an octahedral complex with a trans arrangement of the hydride and acetonitrile ligands. A pK(a) value of 9.4 was measured for this complex by equilibration of [Rh(dppb)(2)](BF4) with 4-bromoanilinium tetrafluoroborate in acetonitrile. [Rh(dppb)21(BF4) reacts with H-2 in the presence of Pt(dmpp)(2), which acts as a base, to form HRh(dppb)(2) and [HPt(dmpp)(2)](BF4) (where dmpp = 1,2-bis-(dimethylphosphino)propane). An equilibrium constant of 0.42 +/- 0.2 was measured for this reaction. Using this equilibrium measurement and a thermodynamic cycle, the hydride donor ability (DeltaGdegrees(H-)) of HRh(dppb)2 was determined to be 34 kcal/mol. This value indicates that HRh(diphosphine)(2) complexes are powerful hydride donors. Similarly the pKa value of HRh(dppb)2 was calculated to be 35 from a thermodynamic cycle that included the potential of the Rh(I/-I) couple (E-1/2 = -2.02 V vs ferrocene). These results combined with results from the literature suggest the following order of hydricity for five-coordinate, 18-electron hydrides: second row > third row > first row. Similarly an acidity order of second row first row > third row is deduced.

  DOI：

  10.1021/om020421k