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To interpret these spectra, let us consider the chain in terms of sequences of two
monomer units or dyads. There are two possible types of dyads and they have
different symmetry properties. The syndiotactic or racemic (r) dyad has a twofold ...
Infrared spectra of predominantly (a) syndiotactic and (b) isotac- tic films of
polymethyl methacrylate. TABLE III. Stereochemical Sequences and their
Probabilities □j y -J. 10 11 12 13 14 15 4000 3000 1000 800 triad. In Table III
planar zigzag ...
The 220 MHz proton NMR spectra of (a) isotactic and (b) syndiotactic
polypropylenes observed in o-dichlorobenzene at 165"C. Analysis of these
spectra yields the following values for the vicinal main-chain couplings (in both
polymers the ...
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Liquid Alkali Metals 1 John F Schenck
Liquid Chromatography 13 Russell L Rasmussen Joseph
Liquid Crystal Devices 41 Manifold Geometry
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