Coordination of a triazine ligand with Cu and Ag investigated by spectral, structural, theoretical and docking studies.

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ID: 64053
2019
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Abstract
Two complexes of 5-phenyl-3-(pyridin-2-yl)-1,2,4-triazine (PPTA), namely (ethanol-κO)bis(nitrato-κO)[5-phenyl-3-(pyridin-2-yl-κN)-1,2,4-triazine-κN]copper(II), [Cu(NO)(CHN)(CHO)] or [Cu(NO)(PPTA)(EtOH)] (1), and bis[μ-5-phenyl-3-(pyridin-2-yl)-1,2,4-triazine]-κN:N,N;κN,N:N-bis[(nitrato-κO)silver(I)], [Ag(NO)(CHN)] or [Ag(NO)(μ-PPTA)] (2), were prepared and characterized by elemental analysis, FT-IR spectroscopy and single-crystal X-ray diffraction. The X-ray structure analysis of 1 revealed a copper complex with square-pyramdial geometry containing two O-donor nitrate ligands along with an N,N'-donor PPTA ligand and one O-donor ethanol ligand. In the binuclear structure of 2, formed by the bridging of two PPTA ligands, each Ag atom has an AgNO environment and square-planar geometry. In addition to the four dative interactions, each Ag atom interacts with two O atoms of two nitrate ligands on adjacent complexes to complete a pseudo-octahedral geometry. Density functional theory (DFT) calculations revealed that the geometry around the Cu and Ag atoms in 1 and 2 (opt is optimized) for an isolated molecule is the same as the experimental results. In 1, O-H...O hydrogen bonds form R(4) motifs. In the crystal network of the complexes, in addition to the hydrogen bonds, there are π-π stacking interactions between the aromatic rings (phenyl, pyridine and triazine) of the ligands on adjacent complexes. The ability of the ligand and complexes 1 and 2 to interact with ten selected biomacromolecules (BRAF kinase, CatB, DNA gyrase, HDAC7, rHA, RNR, TrxR, TS, Top II and B-DNA) was investigated by docking studies. The results show that the studied compounds can interact with proteins better than doxorubicin (except for TrxR and Top II).
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marandi2019coordinationacta Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Marandi, Farzin;Moeini, Keyvan;Krautscheid, Harald;
Journal acta crystallographica section c, structural chemistry
Year 2019
DOI
10.1107/S2053229619011719
URL
Keywords
silver crystal structure dft calculations copper docking studies triazine

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