45270-91-5Relevant academic research and scientific papers
Photochemical Preparation of the cis Isomers of Dichlorobis(tri-n-alkyl-phosphine)palladium(II) (alkyl = Et, Prn, or Bun); the Crystal-structure Analysis of the Overcrowded n-Propyl Homologue
Alcock, Nathaniel W.,Kemp, Terence J.,Wimmer, Franz L.
, p. 635 - 638 (1981)
Ultraviolet irradiation of the trans forms of the title compounds in nitromethane gives up to 70percent of the labile cis isomers, which can be isolated in crystalline form.Irradiation of a 1:1 mixture of trans- and trans-n3)2Cl2> gives almost entirely a 1:1 mixture of the corresponding cis isomers and only a few percent of cis-n3)Cl2>, indicating a predominantly intramolecular mechanism.Crystals of cis-n3)2Cl2> are monoclinic, with space group P21/m, a=9.729(1), b=13.816(3), c=9.614(1) Angstroem, β=100.77(1) deg, and Z=2.The structure has been refined to R=0.029 for 1 873 reflections collected by a four-circle diffractometer.The cis-planar structure reveals considerable overcrowding .The Pd-P distances are short (mean 2.322 Angstroem) and the Pd-Cl distances long (mean 2.407 Angstroem), attributable to the trans effect.
