Construction of right-handed-, left-handed-, and racemic helical coordination polymers. Enantioselective recognition using chiral helical crystals

Infinite square-tubular helices, [CuCl2(L)(S)] (L = bis(4-pyridyl)-methylvinylsilane; S = Me2SO, HCONMe2), were constructed. This helical system affords three kinds of P, M crystals in Me2SO, and racemic crystals in HCONMe2. The cyclic voltammogram (CV) technique using the M-crystals is an effective tool for discerning the chirality of proline.