
TY  - JOUR
A1  - Campbell, JA 
A1  - Raston, CL 
A1  - Varghese, JN 
A1  - White, AH 
T1  - Crystal structures of <I>trans</I>-Dichloro- and Dibromo-bis(2,6-dimethylpyridine)copper(II)
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1977
VL  - 30
IS  - 9
SP  - 1947
EP  - 1953
KW  - 
UR  - https://doi.org/10.1071/CH9771947 
N2  - The crystal structures of the title compounds have been determined at 295(1) K by X-ray diffraction and refined by full-matrix least squares to residuals of 0.045 and 0.067 for 1224 and 1955 ?observed? reflections respectively. The compounds are isomorphous (triclinic, P&#299;, Z 1). Dichloro compound: a 8.068(2), b 8.024(2), c 7.646(2) &#506;, &#945; 93.84(2), &#946; 113.44(2), &#947; 117.11(2)°. Dibromo compound: a 7.999(2), b 7.921(2), c 7.849(2) &#506;, &#945; 94.37(2), &#946; 112.85(2), &#947; 115.99(2)°. The copper atoms are square-planar coordinated with two halide and two base ligands coordinated necessarily trans by virtue of the siting of the molecule on a centre of symmetry. Cu-X, Cu-N are 2.264(2), 2.011(3) (dichloro); 2.425(1), 1.997(4) &#506; (dibromo). The plane of the lutidine is almost normal to the CuN2X2 plane. 
ER  -

