Two novel mixed-ligand Ni(II) and Co(II) complexes with 1,10-phenanthroline: Synthesis, structural characterization, and thermal stability


Тип публикации: статья из журнала

Год издания: 2018

Идентификатор DOI: 10.1016/j.cplett.2018.07.058

Ключевые слова: 1,10-Phenanthroline complexes, Barbituric acid, Infrared spectroscopy, Thermal decomposition, X-ray diffraction

Аннотация: Two nickel(II) and cobalt(II) complexes with phenanthroline, [Ni(Phen)(H2O)3Br]Br (1) and [Co(Phen)2(H2O)2](Hba)2·2H2O (2), Phen = 1,10-phenanthroline and Hba− = barbiturate anion, were synthesized and characterized by powder XRD, TGA and FT-IR. Their structures were determined by single crystal X-ray diffraction techniques. The NiПоказать полностью2+ ion is coordinated by two N atoms of Phen molecule, Br− ion and three H2O molecules forming an octahedron. Uncoordinated and coordinated Br− ions are connected with water molecules by O–H⋯Br intermolecular hydrogen bonds with the formation of a 2D plane network which is extended into a 3D network by π−π stacking interactions. The [Co(Phen)2(H2O)2]2+ cation contains a six-coordinated cobalt atom chelated by two Phen ligands and two aqua ligands in the cis arrangement. N–H⋯O, O–H⋯O and C–H⋯O intermolecular hydrogen bonds form a 3D net. N–H⋯O hydrogen bonds form the infinite chains of Hba–. In addition, coordinated Phen molecules and lattice water molecules are linked via C–H⋯OW hydrogen bonds to form infinite zigzag chains. These different chains are connected by OW–H⋯O hydrogen bonds. π−π interaction plays an important role in the stabilization of structures 1–2. FT-IR, TGA, the diffuse reflectance, and UV–Vis spectra were also used to characterize these compounds. © 2018 Elsevier B.V.

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Журнал: Chemical Physics Letters

Выпуск журнала: Vol. 708

Номера страниц: 11-16

ISSN журнала: 00092614

Издатель: Elsevier B.V.


  • Golovnev N.N. (Siberian Federal University, 79 Svobodny Ave., Krasnoyarsk, Russian Federation)
  • Molokeev M.S. (Siberian Federal University, 79 Svobodny Ave., Krasnoyarsk, Russian Federation, Laboratory of Crystal Physics, Kirensky Institute of Physics, Federal Research Center KSC SB RAS, bld. 38 Akademgorodok 50, Krasnoyarsk, Russian Federation, Department of Physics, Far Eastern State Transport University, 47 Seryshev Str., Khabarovsk, Russian Federation)
  • Sterkhova I.V. (Favorsky Institute of Chemistry, Siberian Branch, Russian Academy of Sciences, 1 Favorsky, Irkutsk, Russian Federation)
  • Lesnikov M.K. (Siberian Federal University, 79 Svobodny Ave., Krasnoyarsk, Russian Federation)