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Intermolecular Interactions of Pyridine Analogues of Picric Acid with Some Pyridine Bases

J.J. Koziol and A. Nowek

Institute of Chemistry, Pedagogical University, PL-42200 Czestochowa

 

Abstract: UV VIS spectrophotometric and quantum-mechanical study on the interaction of 3-hydroxy-2,6-dinitropyridine (3HDNP) and 3-hydroxy-2,4,6-trinitropyridine (3HTNP) with selected pyridine bases is presented. The stability constants for complex formation in aqueous solution have been determined. Comparisons were made with corresponding complexes of polynitrophenols. The nature of interactions has been verified with semiempirical (AM1 and modified INDO) quantum-mechanical methods. It has been found that the values of stability constants for complex formation for 3HDNP and 3HTNP with pyridine bases in water are of comparable magnitude to those of picric acid in benzene solution.

Full paper in Portable Document Format: 475a310.pdf

 

Chemical Papers 47 (5) 310–313 (1993)

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