Abstract
The conformation of (+) poly((2R,6S)-tetrahydropyran-2,6-diyliminocarbonyl) has been studied by the X-ray diffraction method. Crystal data: P2, a=11.79, b=14.40, c (fiber axis)=19.43 Å, γ=98.0°, D0=1.23 gcm−3, Dc=1.29 gcm−3, Z=20. A double-stranded right-handed helix structure of a 103 symmetry is derived from the X-ray, IR dichroism and conformational analyses. The double-stranded helix is rather rigid because of the hydrogen bonds and several close contacts formed between the two single chains.
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K. Hashimoto and H. Sumitomo, Macromolecules, 13, 786 (1980).
H. Sumitomo and K. Hashimoto, Macromolecules, 10, 1327 (1977).
H. Sumitomo and K. Hashimoto, “Contemporary Topics in Polymer Science,” Vol. 4, W. J. Bailey and T. Tsuruta, Ed., Plenum Press, New York, N. Y., 1984, p 779.
S. Arnott, Polymer, 6, 478 (1965).
M. Yokouchi, H. Tadokoro, and Y. Chatani, Macromolecules, 7, 769 (1974).
T. Yamane, H. Nanayama, T. Ashida, K. Hashimoto, and H. Sumitomo, Bull. Chem. Soc. Jpn., 58, 2304 (1985).
C. H. MacGillavry and E. M. Bruins, Acta Crystallogr., 1, 156 (1948).
R. E. Franklin and R. G. Gosling, Acta Crystallogr., 6, 678 (1953).
H. Kusanagi, H. Tadokoro, and Y. Chatani, Macromolecules, 9, 531 (1976).
F. Bosscher, G. ten Brinke, A. Eshuis, and G. Challa, Macromolecules, 15, 1364 (1982).
Y. Chatani, T. Kobatake, and H. Tadokoro, Macromolecules, 15, 170 (1982).
M. D. Lind and S. Geller, J. Chem. Phys., 51, 348 (1969).
V. Y. Chen, G. Allegra, P. Corradini, and M. Goodman, Macromolecules, 3, 274 (1970).
T. Ooi, R. A. Scott, G. Vanderkooi, and H. A. Scheraga, J. Chem. Phys., 46, 4410 (1967).
H. Takahashi, “UNICS-NAGOYA,” Nagoya University, Nagoya, Japan, 1981, p 99.
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Zheng, Z., Yamane, T., Ashida, T. et al. X-Ray Structural Study of Optically Active Polyamide, (+) Poly((2R,6S)-tetrahydropyran-2,6-diyliminocarbonyl). Polym J 18, 973–980 (1986). https://doi.org/10.1295/polymj.18.973
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DOI: https://doi.org/10.1295/polymj.18.973