Os(η(6)-p-cymene)Cl2(P(OPh)3) | 97148-87-3

• 英文名称: Os(η(6)-p-cymene)Cl2(P(OPh)3)
• 英文别名: (η(6)-p-cymene)OsCl2(P(OPh)3)；(p-cymene)OsCl2(P(OPh)3)；[OsCl2(η6-p-cymene)(P(OPh)3)]
• CAS: 97148-87-3
• 化学式: C₂₈H₂₉Cl₂O₃OsP
• 分子量: 705.616
• InChiKey: CAHUAVNNJVHHEZ-UHFFFAOYSA-L

反应信息

• 作为反应物：
  描述：

  trimethylaluminium dimer 、 Os(η(6)-p-cymene)Cl2(P(OPh)3) 以 甲苯 为溶剂， 以92%的产率得到(η(6)-p-cymene)Os(Me)(P(OPh)2(OC6H4-o))
  参考文献：
  名称：

  187Os, 31P and 17O NMR study of carbonylated and alkylated (p-cymene)OsI (L)PR3 complexes

  摘要：

  Series of complexes of the types [(p-cymene)OsI(CO)PR3][PF6], (p-cymene)OsI(phenylethynyl)PR3, (p-cymene)OsI(alkyl)PR3 have been prepared and investigated by Os-187, P-31 and O-17 NMR spectroscopy. The structures of (p-cymene)OsI(C=CPh)PMe3 (3a) and (p-cymene)OsI(C=CPh)(PPr3)-Pr-i (3c) have been determined by X-ray diffraction. A mechanistic study of the formation of the metallacycle 8A formed by intramolecular trans-alkylation from (p-cymene)(OsI2PPr3)-Pr-i (1c) in the presence of Al2Me6 is presented. As shown by time-dependent P-31 NMR, (p-cymene)OsI(Me)(PPr3)-Pr-i (6c) is formed as an intermediate. Os-187, C-13 coupling constants in Cp-and Cp*Os(CO)(2)Me (14 and 15) have been determined from C-13-filtered (H-1, Os-187)-HMQC correlation spectra and are interpreted in comparison with the Fe-57, C-13 data of the corresponding iron complexes. (C) 1997 Elsevier Science S.A.

  DOI：

  10.1016/s0022-328x(97)00376-8
• 作为产物：
  描述：

  亚磷酸三苯酯 、 [osmium(II)dichloride(η6-p-cymene)]2 以 二氯甲烷 为溶剂， 以98%的产率得到Os(η(6)-p-cymene)Cl2(P(OPh)3)
  参考文献：
  名称：

  Mononuclear η⁶-p-cymeneosmium(II) complexes and their reactions with Al₂Me₆and other methylating reagents

  摘要：

  DOI：

  10.1039/dt9850000573

文献信息

• Enthalpies of Reaction of [(<i>p</i>-cymene)OsCl₂]₂ with Monodentate Tertiary Phosphine Ligands. Importance of Steric and Electronic Ligand Factors in an Osmium(II) System
  作者：Jinkun Huang、Scafford Serron、Steven P. Nolan

  DOI：10.1021/om980345e

  日期：1998.8.1

  The enthalpies of reaction of [OsCl2(p-cymene)](2) (1) (p-cymene = eta(6)-CH3C6H4CH(CH3)(2)) with a series of monodentate phosphines (PR3), leading to the formation of OsCl2(p-cymene)(PR3) complexes, have been measured by anaerobic calorimetry in CH2Cl2 at 30 degrees C. These reactions are rapid and quantitative. The overall relative order of stability established is as follows: PPh(NC4H4)(2) < P(NC4H4)(3) < P(p-CF3C6H4)(3) < PPh2(NC4H4) < PPh3 < P(p-ClC6H4)(3) < P(p-CH3C6H4)(3) < P(p-FC6H4)(3) < PCy3 < PBz(3) < (PPr3)-Pr-i < P(p-CH3OC6H4)(3) < P(NC4H8)(3) < PPh2Me < PPhMe2 < PEt3 < PMe3. A quantitative analysis of ligand effects for the present data helps clarify the exact steric versus electronic ligand contributions to the enthalpy of reaction in this system. Both steric and electronic factors appear to play an important role in dictating the magnitude of the enthalpy of reaction. The data are compared to the previously studied RuCl2(p-cymene)(PR3) system.