Mestrenova nmr tutorial7/26/2023 Optical rotatory dispersion (ORD) is evaluated. Thermal behavior of the new compounds is studied by TG and DSC analysis. ![]() The two 1 H independent sets of signals observed for each enantiomer is attributed to two diastereomeric conformers: gg and gt, of the torsion containing the asymmetric carbon atom in the spacer. Molecular models show helical polymeric chains with stereo regular head-tail, isotactic structure, explained as due to the higher reactivity of the primary hydroxyl with respect to the secondary one in the glycol through the polycondensation reaction. ![]() Two new multifunctional polyesteramides designed as PNOBDME (C34H38N2O6)n: poly and PNOBEE (C26H22N2O6)n: poly, are synthesized as cholesteric liquid crystal, characterized by 1 H and 13 C-NMR, COSY and HSQC and compared to precursor polyesters.
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