C. Lartigue-bourdeau, N. Chanh, R. Duplessix
Mar 1, 1993
Citations
0
Influential Citations
9
Citations
Journal
Journal of Physics and Chemistry of Solids
Abstract
Abstract The propargylamine-cadmium chloride complex (HC C-CH2NH3)2CdCl4 belongs to the family of bidimensional perovskite-type compounds which are able to show photoreactivity phenomena under irradiation (γ, X, u.v…) leading to a possible polymerization in the solid state due to the presence of triple bonds in the organic layer. The crystal structure of the complex, before reaction, has been solved by the X-ray diffraction method (monoclinic, C2 c , a = 23.624 (6) A, b = 7.367 (2) A, c = 7.353 (4) A, β = 98.89 (1)°, Z = 4). The distances between adjacent triple bonds (3.44–3.48 A) are in the range of a possible formation of polyene structure initiated by a 7-6 addition and oriented to the b and/or →c directions. On the other hand, the complex exhibits, under the heating process, an exothermic phenomenon corresponding to the irreversible formation of a “high temperature” phase: the crystallographic characteristics of this new phase have been determined.