Complex Polymorphic System of Gallic Acid-Five Monohydrates, Three Anhydrates, and over 20 Solvates.
Complex Polymorphic System of Gallic Acid-Five Monohydrates, Three Anhydrates, and over 20 Solvates.
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DOI:
10.1021/cg301506x
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发表时间:
2013-01-02
影响因子:
3.8
通讯作者:
Price SL
中科院分区:
文献类型:
--
作者:
Braun DE;Bhardwaj RM;Florence AJ;Tocher DA;Price SL
We report the structure of the fifth monohydrate of gallic acid and two additional anhydrate polymorphs and evidence of at least 22 other solvates formed, many containing water and another solvent. This unprecedented number of monohydrate polymorphs and diversity of solid forms is consistent with the anhydrate and monohydrate crystal energy landscapes, showing both a wide range of packing motifs and also some structures differing only in proton positions. By aiding the solution of structures from powder X-ray diffraction data and guiding the screening, the computational studies help explain the complex polymorphism of gallic acid. This is industrially relevant, as the three anhydrates are stable at ambient conditions but hydration/dehydration behavior is very dependent on relative humidity and phase purity. An extensive experimental screen for solid forms, driven by computationally generated anhydrate and monohydrate crystal energy landscapes, revealed the fifth (!) monohydrate structure of gallic acid, structures of two additional anhydrate polymorphs, and evidence of at least 22 solvates. The application of computational studies in combination with other analytical techniques helps unravel the complex polymorphic system of gallic acid.
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DOI:
10.1107/s0108768111042868
发表时间:
2011-12
期刊:
Acta crystallographica. Section B, Structural science
影响因子:
--
作者:
Bardwell DA;Adjiman CS;Arnautova YA;Bartashevich E;Boerrigter SX;Braun DE;Cruz-Cabeza AJ;Day GM;Della Valle RG;Desiraju GR;van Eijck BP;Facelli JC;Ferraro MB;Grillo D;Habgood M;Hofmann DW;Hofmann F;Jose KV;Karamertzanis PG;Kazantsev AV;Kendrick J;Kuleshova LN;Leusen FJ;Maleev AV;Misquitta AJ;Mohamed S;Needs RJ;Neumann MA;Nikylov D;Orendt AM;Pal R;Pantelides CC;Pickard CJ;Price LS;Price SL;Scheraga HA;van de Streek J;Thakur TS;Tiwari S;Venuti E;Zhitkov IK
通讯作者:
Zhitkov IK
影响因子:
5.5
作者:
Kazantsev, A. V.;Karamertzanis, P. G.;Pantelides, C. C.
通讯作者:
Pantelides, C. C.
影响因子:
3.1
作者:
Gelbrich, T;Hursthouse, MB
通讯作者:
Hursthouse, MB
影响因子:
3.8
作者:
Kaur, Ramanpreet;Row, Tayur N. Guru
通讯作者:
Row, Tayur N. Guru
影响因子:
18.3
作者:
ETTER, MC
通讯作者:
ETTER, MC