Croatica Chemica Acta
نویسنده
چکیده
Space-configurational features of atactic poly(acrylic acid) in unperturbed and expanded states were analyzed in terms of the extending and coiling tendency of the backbone bond rotational states. Conformational energy calculations were performed for dyads using semi-empirical relations and the statistical analyses using statistical weight matrices U' and U" for respective dyad skeletal bond pairs reduced to the 2 X 2 order. Agreement with the experimental values of the characteristic ratio C = «r2)o/ /nl2) = 6.7 was obtained for 'yj = 0.3 ± 0.1 and co" = (0.8-2.2), 'yj expressing the preference for t over the g state and co" being a second order parameter for interactions of pendant groups,
منابع مشابه
A Theoretical Information Approach to Ring and Total Aromaticity' in Ground and Excited States
ors: A. Graovac and N. Trinajstic published in Croatica Chemica Acta 53 (4) 581 586 (1980) I Serial rm 581 586 Analytic m Sep. 3, 1979 539.19:547.53 ml~ January 1981 YU 0011-1643 m English m CCACAA rm Croat. Engl.
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