Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals, Vol.303, 291-296, 1997
Synthesis of Mhpobc-D(3) and Mhpobc-D(43) and Behavior of Methyl-Group Attached to Chiral Carbon as Observed by FT-Ir, Raman and NMR-Spectroscopy
we have synthesized two deuterated MHPOBCs-MHPOBC-d(3) with the methyl group connecting to the chiral center deuterated, and MHPOBC-d(43), all deuterated but the methyl group near the chiral part. The polarization angle dependence of FT-IR shows that the symmetric and asymmetric stretchings of methyl group are in-phase with those of phenyl rings in SA and electrically unwound SC* phases, and the peak of CH3 of MHPOBC-d(43) splits into triplet in H-1 NMR and CD3 of MHPOBC-d(3) into doubler in D-2 NMR.