The crystal structure of poly(dithiotriethylene adipate) has been determined through the best fitting of calculated and experimental X-ray diffraction powder profiles. A triclinic cell was found with dimensions a ¼ 4.942 (7) A ˚ , b ¼ 4.702 (2) A ˚ , c ¼ 20.56 (2) A ˚ , a ¼ 88.9 (2)8, b ¼ 61.0 (1)8, c ¼ 67.8 (1)8, P-1 space group, and one chain in the unit cell. A full extended trans conformation of the chain fitted satisfactory the experimental data, yielding to a discrepancy factor Rp ¼ 0.073. A comparison between the crystal structures of poly(dithiotriethylene adipate) and poly (thiodiethylene adipate) is proposed.
L. Finelli, M. Gazzano, N. Lotti, V. Malta, A. Munari (2005). Crystal structure of Poly(dithiotriethylene adipate). JOURNAL OF POLYMER SCIENCE. PART B, POLYMER PHYSICS, 43, 2677-2682 [10.1002/polb.20560].
Crystal structure of Poly(dithiotriethylene adipate)
FINELLI, LARA;LOTTI, NADIA;MUNARI, ANDREA
2005
Abstract
The crystal structure of poly(dithiotriethylene adipate) has been determined through the best fitting of calculated and experimental X-ray diffraction powder profiles. A triclinic cell was found with dimensions a ¼ 4.942 (7) A ˚ , b ¼ 4.702 (2) A ˚ , c ¼ 20.56 (2) A ˚ , a ¼ 88.9 (2)8, b ¼ 61.0 (1)8, c ¼ 67.8 (1)8, P-1 space group, and one chain in the unit cell. A full extended trans conformation of the chain fitted satisfactory the experimental data, yielding to a discrepancy factor Rp ¼ 0.073. A comparison between the crystal structures of poly(dithiotriethylene adipate) and poly (thiodiethylene adipate) is proposed.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
