## Abstract **Summary:** The crystal structure of syndiotactic 3,4βpoly(2βmethylβ1,3βbutadiene) has been determined by the joint use of molecular mechanics and Xβray diffraction. Molecular mechanics calculations have been performed both on the isolated chain and on the crystal by the use of various
Determination of the Crystal Structure of Syndiotactic 1,2-Poly( E -3-methyl-1,3-pentadiene) by X-ray Diffraction and Molecular Mechanics
β Scribed by Pirozzi, Beniamino; Napolitano, Roberto; Giusto, Giovangiuseppe; Esposito, Simona; Ricci, Giovanni
- Book ID
- 126019017
- Publisher
- American Chemical Society
- Year
- 2007
- Tongue
- English
- Weight
- 170 KB
- Volume
- 40
- Category
- Article
- ISSN
- 0024-9297
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## Abstract The crystal structure of isotactic __cis__β1,4βpoly(1,3βhexadiene) has been determined through a combination of Xβray diffraction analysis and molecular mechanics. Two reasonable values for unit cell parameters were obtained from the fiber diffraction pattern of a wellβoriented sample.
## Abstract **Summary:** Two samples of syndiotactic l,2βpoly(1,3βbutadiene) with different constitutional and configurational regularities were characterized by DSC analysis and Xβray powder diffraction. Possible models of the crystal structure were obtained by molecular mechanics calculations per