Structural studies of the cadmium(II) chloride/sparteine system

摘要

The reaction of dichlorocadmium(II) and (-)-sparteine (sp) provides two products, [CdCl2(sp)]) (1) and (Hsp)(3) [Cd2Cl7] (2). The latter represents one of the rare known examples exhibiting an isolated Cd2Cl73- trianion. Both products are formed in the same reaction mixture and single crystals of one of the two products can be obtained selectively by crystallization depending on the co-solvent. The formation and structural characterization of (H(2)sp)[CdCl4] (3) is also reported, crystallizing with either dichloromethane (3a) or water (3b) as guest molecules.