Synthesis, characterization, crystal structure and solution studies of a novel proton transfer (charge transfer) complex of 2,2′-dipyridylamine with 2,6-pyridine dicarboxylic acid

A copper(II) complex with pyridine-2,6-dicarboxylic acid: Synthesis, characterization, thermal decomposition, bioactivity and interactions with herring sperm DNA

“…Pyridine dicarboxylic acids and their metal complexes have been found to have diverse chemical reactivity and broad biological activities, and also have extensive application in medicine [8]. Pyridine dicarboxylic acids which contain a pyridine ring and two carboxylate groups can form various coordinated geometries [9][10][11], and their complexes have been used as electron carriers in some model biological systems as specific molecular tools in DNA cleavage and as NO scavengers [12]. Among the isomers (viz 2,3-, 2,4-, 2,5-, 2,6-, 3,4-and 3,5-H 2 pdc), pyridine-2,6-dicarboxylic acid (2,6-H 2 pdc) has attracted much interest in the synthesis of compounds, because two carboxyl groups with a 120° angle can provide widely varying coordination modes and form both discrete and consecutive metal complexes under the appropriate conditions [13].…”

Revisited Dual Luminescence of 2,2′‐Dipyridylamine Hydrochloride in Solution and Physical Processes behind It

“…To the best of our knowledge, only values of p K a of dpaH + in water have been determined to be 7.14, 7.42, and 7.68, whereas no values in organic solvents could be obtained from literature. Using concentrations, at which amounts of dpa and dpaH + species in solution are approximately equal (100 μ m – 10 μ m , variation is addressed below), value of p K a in methanol can be estimated to be in range of 4.3 – 5.3 ,.…”