51732-80-0Relevant academic research and scientific papers
Extending primary ammonium dicarboxylate (PAD) to diprimary ammonium dicarboxylate (DPAD) synthon and its implication in supramolecular gelation
Das, Uttam Kumar,Dastidar, Parthasarathi
, p. 4559 - 4570 (2013/10/22)
A series of organic salts derived from various dicarboxylic acids and two α,ω-diamines, namely, 1,3-diaminopropane and 1,4-diaminobutane, were prepared and characterized by various physicochemical techniques, including single-crystal X-ray diffraction, with the aim of extending the well-studied 2D primary ammonium dicarboxylate (PAD) supramolecular synthon in the context of supramolecular gelation. Single crystal structures of 9 out of 14 diprimary ammonium dicarboxylate (DPAD) salts were determined. The results showed that none of the salts displayed the expected 2D DPAD synthon; instead, all of them self-assembled into a 3D hydrogen-bonded network. Consequently, only two salts, namely, B3FA and B4SA, appeared to show gelation behavior producing weak gels - a finding that corroborated well with the current understanding of gelation.
ELECTROSTATIC INTERACTIONS BETWEEN ORGANIC IONS
Tam, Shuk-Ching,Williams Robert J. P.
, p. 2255 - 2268 (2007/10/02)
Association constants of organic cations and anions with different charge separations, rigidity and shapes have been studied and have been compared with association constsnts of inorganic cations with the organic anions and also with the association constants of inorganic ions.Bjerrum's theory of ion-pair formation is applicable to spherical inorganic ions but not to ions which have anisotropic charge distributions and shape.For the latter, charge matching becomes an important factor in the association and is most effective when the ions are rigid.
