84192-51-8Relevant academic research and scientific papers
Phosphine complexes of zirconium(IV) and hafnium(IV) obtained through the use of hybrid multidentate ligands. X-ray crystal structure of ZrCl2[N(SiMe2CH2PMe2) 2]2
Fryzuk, Michael D.,Williams, Hugh David,Rettig, Steven J.
, p. 863 - 868 (2008/10/08)
The reaction of LiN(SiMe2CH2PR2)2 with either ZrCl4 or HfCl4 generates new complexes of the formula MCl2[N(SiMe2CH2PR2) 2]2 (M = Zr or Hf; R = Me or Ph). Both of the potentially tridentate hybrid ligands bind only in a bidentate fashion, generating coordinated and uncoordinated phosphines in the same molecule. The single-crystal X-ray structure of ZrCl2[N(SiMe2CH2PMe2) 2]2 (space group Pbca; a = 16.8307 (9), b = 18.4663 (8), c = 24.285 (2) ?; Z = 8; R = 0.036 (Rw = 0.046)) indicates a distorted-octahedral geometry with trans chloride and cis phosphine ligands. The molecule is chiral both in the solid state and in solution by virtue of a gear effect of the two bulky disilylamide ligands.
