
%0 Journal Article
%A Bowmaker, GA 
%A Healy, PC 
%A Engelhardt, LM 
%A Kildea, JD 
%A Skelton, BW 
%A White, AH 
%T Lewis-Base Adducts of Group 11 Metal(I) Compounds. LIX. Crystal Structure Determinations of Tetrakis(trimethylphosphine)copper(I) Halides and Tetrakis(triphenylphosphine)-copper(I) and -silver(I) Hexafluorophosphates
%J Australian Journal of Chemistry
%D 1990/10/01
%V 43
%N 10
%P 1697-1705
%K 
%R https://doi.org/10.1071/CH9901697
%U https://www.publish.csiro.au/paper/CH9901697 
%X The crystal structures of [Cu(Pme3)4]X (X = Cl , Br, I) and of [M(PPh3)4] [PF6] (M = Cu, Ag) have been determined by single-crystal X-ray diffraction methods at 295 K. The former compounds contain nearly tetrahedral [Cu(PMe3)4]+ ions on sites of m symmetry with mean Cu-P bond lengths of 2.270, 2.271 and 2.278 &#506; for X = Cl , Br and I respectively. The latter compounds contain [M(PPh3)4]+ ions on sites of 3 symmetry. In the M =Ag complex the coordination environment is close to tetrahedral, but in the M =Cu complex the length of the axial Cu-P bond [2.465(2)&#506;] is significantly shorter than that of the off-axis bonds [2.566(2)&#506;]. Possible reasons for this are discussed. 
