Metal chelates constructed from CdHal2 (Hal = Cl, Br, I) and 1,2-diphenyl-1,2-bis((phenyl(pyridin-2-yl)methylene)hydrazono)ethane

Three new coordination compounds fabricated from CdHal2 (Hal = Cl, Br, I) and a helical organic ligand 1,2-diphenyl-1,2-bis((phenyl(pyridin-2-yl)methylene)hydrazono)ethane (L) in MeOH, namely [CdCl2L] (1), [CdBr2L] (2) and [CdI2L] (3). Hirshfeld surface analysis showed that the structures of 1-3 are highly dominated by H⋯X (X = H, C and Hal) contacts. In the diffuse reflectance spectra, 1-3 each exhibit bands up to about 500 nm.141