[(η5-C5Me5)Fe(1,3-bis(diphenylphosphino)propane)(CO)][CF3SO3] | 420797-13-3

• 英文名称: [(η5-C5Me5)Fe(1,3-bis(diphenylphosphino)propane)(CO)][CF3SO3]
• CAS: 420797-13-3
• 化学式: CF₃O₃S*C₃₈H₄₁FeOP₂
• 分子量: 780.608
• InChiKey: UKYNRJONYXMUBC-UHFFFAOYSA-M

反应信息

• 作为产物：
  描述：

  [(η5-C5Me5)Fe(1,3-bis(diphenylphosphino)propane)][CF3SO3]*0.5CH3COCH3 、 一氧化碳 以 四氢呋喃 为溶剂， 以97%的产率得到[(η5-C5Me5)Fe(1,3-bis(diphenylphosphino)propane)(CO)][CF3SO3]
  参考文献：
  名称：

  [(η⁵-C₅Me₅)Fe(Ph₂PCH₂CH₂CH₂PPh₂)][SO₃CF₃], a Stable 16-Electron Complex with a Coordinating Counteranion and without Agostic Interaction:  The Dramatic Role of a Trivial Methylene Group

  摘要：

  The iron chloro complex Cp*(dppp)FeCl (Cp* = pentamethylcyclopentadienyl, dppp = 1,3-bis(diphenylphosphino)propane; 2) was prepared from FeCl2(dppp) and Cp*Li in 85% yield. The air-stable compound 2 was characterized by IR-FT, H-1, P-31, and C-13 NMR, cyclic voltammetry (CV), and X-ray crystal analysis. The experimental data indicate that this complex possesses the same electronic properties as its homologue Cp*(dppe)FeCl (dppe = 1,2-bis(diphenylphosphino)ethane; 2'), but shorter distances between the chlorine atom and the hydrogen atoms of the dppp ligand give rise to through-space interactions. The hydride 3 was obtained by treatment of the chloro derivative 2 with LiAlH4 (95%). The changes in the Fe-H bond stretching and redox potential induced by replacement of dppe by dppp is in agreement with the existence of two conformers for the iron hydrides 3 and 3'. The 16-electron species [Cp*(dppp)Fe] [OSO2CF3] (4[OTf]) is obtained by treatment of 3 with methyl triflate in diethyl ether (82%). The pseudo-C-2upsilon conformation of 4[OTf] is established by an X-ray analysis. Complex 4[OTf] possesses a triplet ground state, as shown by the magnetic susceptibility measurements, 1H NMR, and Mossbauer spectroscopy. The UV-vis data obtained for 4[OTf] and its homologue 4'[PF6] suggest that the increase of the bite angle of the bis-phosphine should produce a decrease of the HOMO-LUMO gap of the triplet ground state with a pseudo-C-2upsilon symmetry.

  DOI：

  10.1021/om0108245