S. Sans-Lenain, A. Gleizes
Sep 1, 1993
Citations
0
Influential Citations
21
Citations
Journal
Inorganica Chimica Acta
Abstract
The crystal structure of bis(2,2,6,6-tetramethyl-3,5-heptanedionato) copper, Cu(thd) 2 , has been determined at 130, 250 and 293 K (monoclinic, space group P 2 1 / c , a = 10.200(3), b = 10.957(3), c = 11.491(4) A, β = 112.05(2)° at 130 K). At 130 K the structure shows no disorder. One of the t-Bu groups is involved in an unusually short intermolecular contact. At higher temperatures this same group is disordered. The number of configurations increases with the temperature. The room temperature crystal structures of bis(3-chloro-2,4-pentanedionato)copper, Cu(Clacac) 2 (monoclinic, space group P 2 1 / n , a = 4.815(2), b = 17.107(3), c = 8.013(2) A, β = 106.92(2)°), and (2,2,6,6- tetramethyl-3,5-heptanedionato)(3-chloro-2,4-pentanedionato) copper, Cu(thd)(Clacac) (orthorhombic, space group Pnma , a = 19.213(4), b = 6.453(4), c = 15.725(4) A) are also described. Two kinds of molecular stacking are observed depending on whether the complex is homo- or heteroleptic.