DIMETHYLTHALLIUM COMPLEXES OF DICYCLOHEXYL-18-CROWN-6
Dimethylthallium complexes of dicyclohexyl-18-crown-6, [(CH3)2Tl(L)]pic, L = DCC-A (1) and DCC-B (2), were prepared. The two methyl protons are not equivalent magnetically in 1, but equivalent in 2. A linear CH3–Tl–CH3 moiety was held strongly and perpendicularly in the quasi-planar ring of six oxygen atoms. The conformation of cyclohexyl groups of the complexes was discussed.