
%0 Journal Article
%A Bowmaker, GA 
%A Camp, D 
%A Hart, RD 
%A Healy, PC 
%A Skelton, BW 
%A White, AH 
%T Comparative Structural Studies on Three-Coordinate Copper(I) Halide Complexes With Tertiary Phosphines. Crystal Structures of [(PPh<sub>2</sub>Mes)CuX]<sub>2</sub> and [(PPhMes<sub>2</sub>)CuX]<sub>2</sub> (Mes = Mesityl X = Cl, Br, I)
%J Australian Journal of Chemistry
%D 1992/07/01
%V 45
%N 7
%P 1155-1166
%K 
%R https://doi.org/10.1071/CH9921155
%U https://www.publish.csiro.au/paper/CH9921155 
%X The 1 : 1 complexes of the substituted triphenylphosphine ligands mesityldiphenylphosphine and dimesitylphenylphosphine with copper(1) chloride, bromide and iodide have been the subject of single-crystal X-ray structure determinations at 295 K. All six complexes crystallize as air-stable dimeric molecules, [(PPh2Mes)CuX]2 and [ (PPhMes2)CUX]2 with each copper atom in a distorted trigonal PCuX2. coordination environment. Crystals of [(PPh2Mes)CuCl]2 (1) are monoclinic, P21/n, a 9.961(3), b 18.687(6), c 11.009(7) &#506;, &#946; 114.63(4)&#176;; R was 0.049 for 2450 'observed' reflections. [(PPh2Mes)CuBrI2 (2) is monoclinic, P21/n, a 9.939(2), b 18.832(6), c 11.238(6) &#506;, &#946; 115.36(3)&#176;; R was 0.046 for 1803 'observed' reflections. [(PPh2Mes)CuI]2.4/3 C6H6 (3) is rhornbohedral, R3, a 36.877(8), c 9.047(5) A; R was 0.039 for 2537 'observed' reflections. Crystals of [(PPhMes2)CuCl]2.2MeCN (4) are triclinic, Pi, a 15.783(7), b 9.570(4), c 8.914(4) &#506;, &#945; 72.43(3), &#946; 76.37(3), &#947; 74.03(3)&#176;; R was 0.045 for 3341 'observed' reflections. [(PPhMes2)CuBr]2.3C6H6 (5) is monoclinic, C2/c, a 9.694(6), b 30.15(2), c 20.66(2) &#506;, &#946; 98.00(7)&#176;; R was 0.047 for 2117 'observed' reflections. [(PPhMes2)CuI]2.2MeCN (6) is orthorhombic, PP1nb, a 11.694(8), b 14.77(1), c 29.76(3) &#506;; R was 0.049 for 3447 'observed' reflections. Cu-P bond lengths are: 2.196(2) A (1); 2.198(3) &#506; (2); 2.222(5) and 2.226(5) &#506; (3); 2.202(1) &#506; (4); 2.197(3) A (5); 2.201(4) and 2.264(5) &#506; (6). The geometries of the LCuX2 and CuX2Cu units are compared with data reported for other monomeric and dimeric compounds for both phosphorus- and nitrogen-based ligands L. 
