Synthesis, growth, structural, optical and thermal properties of a new organic nonlinear optical crystal: 2-amino 5-chloropyridinium-L-tartarate

Crystal structures of 2-aminopyridine citric acid salts: C5H7N2 +·C6H7O7 − and 3C5H7N2 +·C6H5O7 3−

“…Systematic structural and statistical analysis focusing on the identification of robust supramolecular synthons or patterns are essential for crystal engineering and the design of new solid-state structures with desired properties. Organic crystals, especially salts, are now considered as potential materials for optical applications because of their flexibility in molecular design (Jayanalina et al, 2015a), thermal stability and delocalized clouds of electrons (Jayanalina et al, 2015b). An analysis of the Cambridge Structural Database (Groom et al, 2016) by Bis & Zaworotko (2005) revealed that 77% of compounds that contain both the 2-aminopyridine and carb- ISSN 2056-9890 oxylic acid moieties generate 2-aminopyridine-carboxylic acid supramolecular heterosynthons rather than carboxylic acid or 2-aminopyridine supramolecular homosynthons.…”

“…The crystal structure of 2-amino 5-chloropyridinium-ltartarate (Jayanalina et al, 2015b) shows that despite of the presence of other competing functionalities on the carboxylic acid (two alcoholic OH groups in tartaric acid), the most frequent 2-aminopyridinium-carboxylate heterosynthon is still observed. However, the presence of the alcoholic OH group in citric acid has resulted in a deviation from the regular trend as the charge-assisted 2-aminopyridinium-carboxylate heterosynthon is not observed in I; instead chains of N-HÁ Á ÁO hydrogen bonds and hetero O-HÁ Á ÁO dimers are observed.…”

Growth and Characterization of Promising Nlo Crystal: Meta Nitroaniline

“…For this reason, scientists are constantly carrying out investigations towards the development of high-performance NLO materials with acceptable structural integrity in the solid-state. Hence, there is a special interest in exploring organic molecules in view of their ability to act as building blocks for the design of a widespread amount of molecular architectures [4][5][6][7] . Furthermore, the relatively good hyperpolarizability (β) values of some of these organic molecules make them even more attractive candidates for the development of highly efficient NLO materials 8,9 .…”

High Pressure Spectroscopic Investigation on Proton Transfer in Squaric Acid and 4,4′-Bipyridine Co-crystal

“…Its empirical study began with the origin of chemistry. Recently, the investigations on PT mainly focused on the crystal engineering 3 , 4 , catalytic reactions 5 , 6 , and other relevant fields such as organic ferroelectrics 7 , 8 , energetic materials 9 – 11 , non-linear optical materials 12 , 13 , hydrogen storage 14 – 17 and pharmaceutical industry 18 , 19 . PT is also known as a crucial step in many biochemical processes 20 – 24 .…”