Isotactic cis-1,4-poly(3-methyl-1,3-pent
Isotactic cis-1,4-poly(3-methyl-1,3-pentadiene): a new conformation for isotactic cis-1,4-polydienes
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Stefano Valdo Meille; Silvia Capelli; Giuseppe Allegra; Giovanni Ricci
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Article
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1995
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John Wiley and Sons
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English
⚖ 359 KB
Oriented specimens of isotactic cis-l,4-poly(3-methyl-l,3-pentadiene) exhibit two crystalline modifications characterized, respectively, by the expected two-fobd helical conformation with a fiber repeat of 8,02 A and by a three-fold helix with c = 9,97 A. The latter highly contracted structure is pr