Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1406805 | Journal of Molecular Structure | 2008 | 6 Pages |
Abstract
The 2:2 hydrogen-bonded complex between Kemp's triacid (KTA) and 1,1,3,3-tetramethylguanidine (TMG) has been synthesised and studied by X-ray diffraction and by FT-IR spectroscopy. Cocrystals of KTA-TMG belong to the monoclinic system and crystallize in the space group is P21 with a = 10.5017(3) Ã
, b = 7.9504(3) Ã
, c = 11.8910(4) Ã
, β = 104.004(4)° and Z = 2. The ring of the KTA monoanion molecule exhibits a chair conformation with all three carboxylic groups in the axial positions and all three methyl groups in the equatorial positions. In the crystal of the complex, cooperative systems involving inter- and intra-molecular hydrogen bonds are formed. In the solid state two protonated TMG molecules and two deprotonated KTA molecules form a dimer in which three-dimensional hydrogen-bonded networks are found.
Keywords
Related Topics
Physical Sciences and Engineering
Chemistry
Organic Chemistry
Authors
Adam HuczyÅski, MaÅgorzata Ratajczak-Sitarz, Andrzej Katrusiak, Bogumil Brzezinski,