Experimental tests of parity violation at helical polysilylene level

With respect to the origin of bimolecular handedness, a long-standing issue is whether mirror-image molecules are energetically identical. A few theor ists presumed that the very tiny, parity-violating weak neutral current at molecular level may distinguish between mirror-image molecules, and propose d several amplification and detection mechanisms. Here we report a possibil ity of detecting differences in chiroptical and achiral Si-29 NMR and visco metric data of an enantiomeric pair between certain helical organopolysilyl enes bearing 96% ee chiral pendants.