Unprecedent Isolation of a Mixture of Conformational and Linkage Isomers in a Thiosemicarbazone Cobalt Mesocate

A cobalt(II) thiosemicarbazonate mesocate has been structurally characterized as an unexpected mixture of conformational and linkage isomers. Moreover, we have shown that the absence of a nitrogen atom in the spacer of the helicand ligand H₂L^a, enables the assembly of an achiral mesohelical complex in the case of Co(II) ions.