X-ray Diffraction Analysis of the Structure of Poly (dichlorophosphazene)

Macromolecules

Volumn 13, Issue 4, 1980, Pages 919-928

  Allcock, H R ^a   Arcus, R A ^a   Stroh, E G ^a  

^a PENNSYLVANIA STATE UNIVERSITY   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 0001167201     PISSN: 00249297     EISSN: 15205835     Source Type: Journal    
DOI: 10.1021/ma60076a030     Document Type: Article

References (35)

1. For a related paper on the crystalline transitions and related physical properties of poly(dichlorophosphazene) see H. R. Allcock and R. A. Arcus, Macromolecules, 12, 1130 (1979).
2. H. R. Allcock and R. L. Kugel, J. Am. Chem. Soc., 87, 4216 (1965).
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5. H. R. Allcock, “Phosphorus-Nitrogen Compounds”, Academic Press, New York, 1972.
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15. H. R. Allcock and E. G. Stroh, unpublished results.
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22. The conformational energy calculation method is described in detail in H. R. Allcock, R. W. Allen, and J. J. Meister, Macromolecules, 9, 950 (1976). The potential used was a 6-12 Lennard-Jones potential together with a Coulombic term of the type Djj = (kQiQf)/(erA. The partial charges, Q., were +0.70 for phosphorus, -0.32 for nitrogen, and -0.19 for chlorine. No intrinsic backbone torsional potential was applied for the reasons discussed in the article referenced above.
23. A. J. Hopfinger, “Conformational Properties of Macromolecules”, Academic Press, New York, 1973, p 47.
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27. C. W. Bunn, “Chemical Crystallography”, Oxford University Press, Oxford, 1961.
28. M. J. Buerger, “X-Ray Crystallography”, Wiley, New York, 1942.
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34. The equations for these calculations were derived from those reported by T. Miyazawa, J. Polym. Sci., 55, 215 (1961).
35. A. Bondi, J. Phys. Chem., 68, 441 (1964).