Three halogeno(cyano)cuprates with 1-D helical chains and their efficient luminescence

Abstract: Spontaneous resolution in solvothermal reactions through tuning the volume of the templating and space-filling agents (quaternary ammonium cations) lead to three novel halogeno(cyano)cuprates [R4N][Cu(CN)X] (R=Et, X=Cl, 1; R=Et, X=Br, 2; R=Bu, X=I, 3), which all consist of 1-D helical chains. Compounds 1 and 2 reveal to be mesomeric structures while compound 3 exhibits a nonracemic enantiopure topology. Luminescent studies indicate that all three compounds are potential materials for efficient luminescent materials. [Copyright &y& Elsevier]