Polymorphism of the co-crystalline forms of syndiotactic polystyrene with chloroform: Crystal structure of the δ clathrate

2010 ◽  
Vol 46 (3) ◽  
pp. 456-464 ◽  
Author(s):  
Oreste Tarallo ◽  
Maria Maddalena Schiavone ◽  
Vittorio Petraccone
1999 ◽  
Vol 32 (15) ◽  
pp. 4905-4911 ◽  
Author(s):  
Masatoshi Tosaka ◽  
Masaki Tsuji ◽  
Shinzo Kohjiya ◽  
Laurent Cartier ◽  
Bernard Lotz

2018 ◽  
Vol 74 (3) ◽  
pp. 381-385 ◽  
Author(s):  
Xiaojuan Wang ◽  
Hai-Jiang Xu ◽  
Xue-Dong Jia ◽  
Yan-Tao Yang ◽  
Xiao-Jian Zhang

The nucleoside analogue entecavir {systematic name: 2-amino-9-[(1S,3R,4S)-4-hydroxy-3-hydroxymethyl-2-methylenecyclopentyl]-1,9-dihydro-6H-purin-6-one}, C12H15N5O3, is an antihepatitis B virus drug that has been approved in the US, EU and several countries worldwide. We report here the single-crystal structure of the anhydrous form and compare it with that of the previously reported monohydrate form [Jiang & Liu (2009).Acta Cryst.E65, o2232]. Hirshfeld surface analysis has been employed to understand and visualize the subtle packing differences between the two crystalline forms. The results show that, compared to the previously reported hydrated form, the anhydrous crystal has significantly different intermolecular interactions and packing patterns.


Polymer ◽  
1993 ◽  
Vol 34 (8) ◽  
pp. 1625-1629 ◽  
Author(s):  
Yozo Chatani ◽  
Yukio Shimane ◽  
Toshikazu Ijitsu ◽  
Toshimitsu Yukinari

2011 ◽  
Vol 9 (2-3) ◽  
pp. 124-140 ◽  
Author(s):  
Oreste Tarallo ◽  
Maria Maddalena Schiavone

1991 ◽  
Vol 23 (12) ◽  
pp. 1435-1442 ◽  
Author(s):  
C De Rosa ◽  
G Guerra ◽  
V Petraccone ◽  
P Corradini

1989 ◽  
Vol 78 (4) ◽  
pp. 274-280 ◽  
Author(s):  
Toshimasa Ishida ◽  
Mitsunobu Doi ◽  
Mari Shimamoto ◽  
Naoko Minamino ◽  
Katsumi Nonaka ◽  
...  

2011 ◽  
Vol 675-677 ◽  
pp. 275-278
Author(s):  
Xue Bai ◽  
Di Jia ◽  
Bo Wen Cheng ◽  
Wei Min Kang ◽  
Quan Xiang Li

In this paper, electrospinning method was adopted to prepare tin oxide nanofibers membrane with three kinds of novel precursor solution PVP/C12H24O4Sn, PVP/ C4H10OSn and PVP/SnCl4. The morphology, surface element, thermal analysis and crystal structure of the fibers membrane were investigated by SEM, EDS, TG-DTA and XRD. The results showed that the organic/inorganic hybrid nanofibers with an average diameter of 300~700 nm can be obtained by electrospinning. But after calcined at 600°C, the loose and porous tin oxide nanofibers membrane with an average diameter of 100~250 nm can be obtained only by using PVP/SnCl4 as preceusor solution, moreover, it showed good fiber forming property. From XRD spectra, it was found that the rutile structure tin oxide finally obtained without other crystalline forms.


Polymer ◽  
1999 ◽  
Vol 40 (8) ◽  
pp. 2103-2110 ◽  
Author(s):  
Claudio De Rosa ◽  
Paola Rizzo ◽  
OddaRuiz de Ballesteros ◽  
Vittorio Petraccone ◽  
Gaetano Guerra

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