Zobrazeno 1 - 10
of 41
pro vyhledávání: '"Eugene Y. Cheung"'
Autor:
Örn Almarsson, Sherry Collier, Matthew L. Peterson, Magali B. Hickey, Eugene Y. Cheung, Mark Oliveira, Renato A. Chiarella, Edwin A. Collier
Publikováno v:
Crystal Growth & Design. 22:3575-3578
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1667d6f824edfd841ae46a6d4485798e
https://doi.org/10.1021/acs.cgd.1c01399
https://doi.org/10.1021/acs.cgd.1c01399
Publikováno v:
Crystal Growth & Design. 16:210-220
Total scattering pair distribution function (TSPDF) analysis of synchrotron X-ray diffraction data has been used to study the structural characteristics of amorphous lactose and its subsequent recrystallization on aging. This shows that the recrystal
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c318b8a993ed2dd6e80ac4583f0c1df6
https://doi.org/10.1021/acs.cgd.5b01100
https://doi.org/10.1021/acs.cgd.5b01100
Autor:
Matthew L. Peterson, Eugene Y. Cheung
Publikováno v:
Thermochimica Acta. 482:57-61
Although screening for organic polymorphs has become a hot topic in recent years, polymorph screens continue to be largely based on solution crystallization. Other routes to different crystal forms, such as grinding, annealing, and melt crystallizati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a3e8d876d5d7ed18441505adca28ef63
https://doi.org/10.1016/j.tca.2008.10.019
https://doi.org/10.1016/j.tca.2008.10.019
Publikováno v:
The Journal of Physical Chemistry B. 111:6349-6356
A strategy is reported for assessing the feasibility of molecular conformations within direct-space structure-solution calculations of organic molecular crystal structures from powder X-ray diffraction data, focusing in particular on the genetic algo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b5fe83d5627ac7072f36b6fc59941325
https://doi.org/10.1021/jp070954c
https://doi.org/10.1021/jp070954c
Publikováno v:
Journal of Solid State Chemistry. 180:1068-1075
We report the formation and structural properties of co-crystals containing gemfibrozil and hydroxy derivatives of t-butylamine H2NC(CH3)3−n(CH2OH)n, with n=0, 1, 2 and 3. In each case, a 1:1 co-crystal is formed, with transfer of a proton from the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::56e020168b621de0d9b35c5667327469
https://doi.org/10.1016/j.jssc.2006.12.036
https://doi.org/10.1016/j.jssc.2006.12.036
Autor:
Zhigang Pan, James Alexis Platts, Catherine E. Housecroft, Eugene Y. Cheung, Kenneth D. M. Harris, Edwin C. Constable, Mingcan Xu
Publikováno v:
Journal of Solid State Chemistry. 179:3214-3223
Structural properties of 2,4,6-trimethoxybenzaldehyde, 2,4,6-trimethoxybenzyl alcohol and 2,4,6-trimethoxyacetophenone have been determined directly from powder X-ray diffraction data, using the direct-space Genetic Algorithm (GA) technique for struc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ac3a0a0d1bafe7d24a42019926533197
https://doi.org/10.1016/j.jssc.2006.06.009
https://doi.org/10.1016/j.jssc.2006.06.009
Autor:
Kenneth D. M. Harris, Eugene Y. Cheung
Publikováno v:
Zeitschrift für Kristallographie Supplements. 2006:15-20
This paper presents an overview of the genetic algorithm technique for structure solution from powder diffraction data, and gives a number of examples that illustrate the application of this technique to solve crystal structures of different types of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b6c0eb31182279e9bbb118fa112f02f5
https://doi.org/10.1524/zksu.2006.suppl_23.15
https://doi.org/10.1524/zksu.2006.suppl_23.15
Autor:
Kenneth D. M. Harris, Edwin C. Constable, Catherine E. Housecroft, Zhigang Pan, Eugene Y. Cheung
Publikováno v:
Crystal Growth & Design. 5:2084-2090
The structure of the monohydrate crystalline phase of 3,5-bis((3,4,5-trimethoxybenzyl)oxy)benzyl alcohol has been determined directly from powder X-ray diffraction data using the direct-space genetic algorithm technique for structure solution followe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::12523bcbd9b9dea0415968e7f08acaa7
https://doi.org/10.1021/cg050212d
https://doi.org/10.1021/cg050212d
Publikováno v:
Zeitschrift für Kristallographie - Crystalline Materials. 219:838-846
This paper presents an overview of developments that have taken place in recent years in the genetic algorithm technique for structure solution from powder diffraction data. After a brief resumé, of the essential features of the genetic algorithm te
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::36841f73f2ac286e9ea549c2b49a2f8a
https://doi.org/10.1524/zkri.219.12.838.55856
https://doi.org/10.1524/zkri.219.12.838.55856
Publikováno v:
Chemical Physics Letters. 390:394-398
A method for calculation of the whole-profile powder diffraction R-factor Rwp, adapted specifically for use in direct-space structure solution, is shown to be faster by a factor of approximately 20 than standard methods for calculating Rwp.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d4df881eccfca675ee8c84cc53dbb4ab
https://doi.org/10.1016/j.cplett.2004.04.031
https://doi.org/10.1016/j.cplett.2004.04.031