cis-2-diphenylphosphino-1-cyanocyclopentane | 130648-96-3

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: cis-2-diphenylphosphino-1-cyanocyclopentane
• CAS: 130648-96-3
• 化学式: C₁₈H₁₈NP
• 分子量: 279.321
• InChiKey: LCJJYSBYRRQQJE-YJBOKZPZSA-N

反应信息

• 作为反应物：
  描述：

  cis-2-diphenylphosphino-1-cyanocyclopentane 、 palladium dichloride 以 盐酸 、 乙醇 为溶剂， 生成 trans-dichloropalladium(cis-2-diphenylphosphino-1-cyanocylopentane)2
  参考文献：
  名称：

  Phosphine-nitrile ligands: the molecular structure of cis-2-diphenylphosphino-1-cyanocyclopentane and studies of the donor/acceptor properties of this and related ligands

  摘要：

  The cis and trans isomers of the previously reported 2-diphenylphosphino-1 -cyanocyclo-pentane and -cyclohexane have been separated, and three of the four isomers have been obtained (both isomers of the former and one of the latter) as pure samples. An X-ray study of the Ph(2)PC(5)H(8)CN isomer with the more-shielded P-31 chemical shift proved it to be the cis isomer. A prominent feature observed for the structure is that the CN group is directed toward the phosphorus lone pair. Van der Waals,and molecular mechanics calculations have suggested that the corresponding trans isomer has a structure in which the CN group is in general directed away from the phosphorus lone pair. Cone angle calculations based on the X-ray structure and calculated geometries of both cia and trans Ph(2)C(5)H(8)CN as well as the analogous Ph(2)C(5)H(8)(R) (R = H, CH3) have provided values between 150 degrees and 173 degrees with the cis isomers having larger angles than the trans. Nonaqueous titrations have been used to determine pK(a) values for the three cycloalkane-nitrile phosphines, and values between 2.44 and 2.52 have been obtained. IR and NMR studies of the Ni(CO)(3)L complexes of these three ligands have been completed, and the results indicate that these ligands are similar in effect to PhP(OR)(2). Both Pd-II and Pt-II complexes (all trans geometries) of these ligands have been obtained, and the P-N chelates (Pd) of the corresponding methyl imino ethers (from trans Ph(2)C(5)H(8)CN and Ph(2)PC(6)H(10)CN) have also been isolated.

  DOI：

  10.1016/0022-328x(94)87068-3