Synthon polymorphs of 1 : 1 co-crystal of 5-fluorouracil and 4-hydroxybenzoic acid: their relative stability and solvent polarity dependence of grinding outcomes

CrystEngComm ◽  
2014 ◽  
Vol 16 (28) ◽  
pp. 6450-6458 ◽  
Author(s):  
Song Li ◽  
Jia-Mei Chen ◽  
Tong-Bu Lu
Keyword(s):  
Crystal Structures ◽  
Relative Stability ◽  
Solvent Polarity ◽  
Hydroxybenzoic Acid

Two synthon polymorphs of 1 : 1 co-crystals of 5-fluorouracil and 4-hydroxybenzoic acid were synthesized, and the crystal structures were determined.

scholarly journals Crystal structure of 3-bromo-2-hydroxybenzoic acid

2015 ◽  
Vol 71 (5) ◽  
pp. 531-535 ◽  
Author(s):  
Gerhard Laus ◽  
Volker Kahlenberg ◽  
Thomas Gelbrich ◽  
Sven Nerdinger ◽  
Herwig Schottenberger
Keyword(s):  
Crystal Structure ◽  
Salicylic Acid ◽  
Hydrogen Bonds ◽  
Crystal Structures ◽  
Title Compound ◽  
Hydroxybenzoic Acid ◽  
Compound C ◽  
Derivatives Of ◽  
Centrosymmetric Dimers ◽  
Ring Motif

Mutual carboxyl–carboxyl O—H...O hydrogen bonds link the molecules of the title compound, C7H5BrO3, into centrosymmetric dimers which display a centralR22(8) ring motif. In addition, there is an intramolecular hydroxyl–carboxyl O—H...O interaction present. A comparison with the crystal structures of 59 other substituted derivatives of salicylic acid shows that both the centrosymmetric carboxyl–carboxyl O—H...O dimer and the stacking mode of molecules along the shortaaxis observed in the title structure are frequent packing motifs in this set.

Structural Studies of a Series of Organic Non-Linear Optical Materials

1997 ◽  
Vol 53 (5) ◽  
pp. 812-821 ◽  
Author(s):  
J. C. Cole ◽  
J. M. Cole ◽  
G. H. Cross ◽  
M. Farsari ◽  
J. A. K. Howard ◽  
...  
Keyword(s):  
Crystal Structures ◽  
Ground State ◽  
Optical Materials ◽  
Dipole Moments ◽  
Solvent Polarity ◽  
Structural Studies ◽  
Acta Cryst ◽  
X Ray ◽  
Solution State ◽  
X Ray Crystallography

The crystal structures of {4-[bis(diethylamino)methylium]phenyl}dicyanomethanide (I), {4-[cyano(4-methylpiperidyl)methylium]phenyl } dicyanomethanide (II), {4-[cyano(1-pyrrolidinyl)methylium]phenyl}dicyanomethanide (IV) and (Z)-{4-[1,3-dicyano-3-(diethylamino)-2-propenylium]phenyl} dicyanomethanide have been determined by X-ray crystallography. Together with (Z)-{4-[1-cyano-3-(diethylamino)-2-propenylium]phenyl}dicyanomethanide [(III): Cole, J. C., Howard, J. A. K., Cross, G. H. & Szablewski, M. (1995). Acta Cryst. C51, 715–718], these compounds exhibit varying degrees of quinoidal characteristics and yet have predominantly zwitterionic ground state character. The presence of high dipole moments in the crystal can thus be inferred and are substantiated by measurements of high solution-state dipole moments. Negative solvatochromism (hypsochromism on increasing solvent polarity) confirms the zwitterionic character in at least two of the series.

Synthesis, Crystal Structures, and Properties of Two New Cu(II) Complexes with p-Hydroxybenzoic Acid

2014 ◽  
Vol 26 (4) ◽  
pp. 1253-1265 ◽  
Author(s):  
Cun-Jie Lin ◽  
Jian-Qing Xu ◽  
Yue-Qing Zheng ◽  
Hong-Lin Zhu ◽  
Wei Xu
Keyword(s):  
Crystal Structures ◽  
Hydroxybenzoic Acid ◽  
Structures And Properties

scholarly journals Six lanthanide supramolecular frameworks based on mixed m-/p-hydroxybenzoic acid and 1,10-phenanthroline tectons: Syntheses, crystal structures, and properties

Polyhedron ◽  
2016 ◽  
Vol 113 ◽  
pp. 132-143 ◽  
Author(s):  
Min Chen ◽  
Min Hu ◽  
Wen-Ming Xu ◽  
E. Carolina Sañudo ◽  
Shao-Ming Fang ◽  
...  
Keyword(s):  
Crystal Structures ◽  
Hydroxybenzoic Acid ◽  
Structures And Properties
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