Hydrates [Na-2(H2O)(x)](2-thiobarbiturate)(2) (x=3, 4, 5): crystal structure, spectroscopic and thermal properties | Научно-инновационный портал СФУ

Hydrates [Na-2(H2O)(x)](2-thiobarbiturate)(2) (x=3, 4, 5): crystal structure, spectroscopic and thermal properties

Тип публикации: статья из журнала

Год издания: 2016

Идентификатор DOI: 10.1080/00958972.2016.1228914

Ключевые слова: 2-Thiobarbituric acid, Sodium, coordination compound, X-ray diffraction, infrared spectroscopy, thermal analysis

Аннотация: The hydrates [Na-2(H2O)(3)(Htba)(2)] (1) and [Na-2(H2O)(4)(Htba)(2)] (2), where H(2)tba is 2-thiobarbituric acid, were obtained under different thermal conditions from aqueous solutions and were structurally characterized. The molecular and supramolecular structures were compared to the known structure of [Na-2(H2O)(5)(Htba)(2)] (3). In polymeric 1-3, the Htba-ions are linked to Na+ through O and S forming octahedra. The decrease of the number of coordination water molecules led to an increase of the total number of bridge ligands (mu(2)-H2O, Htba(-)) and a change of the Htba-coordination. These factors induced higher distortion of the octahedra. It was assumed that hydrates, with a different number of coordinated water molecules, are more probable when the central metal has weaker bonds with O water molecules and with other ligands. The net topologies of 1-3 were compared. Thermal decomposition and IR spectra were analyzed for 1 and 2. [GRAPHICS] .

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Издание

Журнал: JOURNAL OF COORDINATION CHEMISTRY

Выпуск журнала: Vol. 69, Is. 21

Номера страниц: 3219-3230

ISSN журнала: 00958972

Место издания: ABINGDON

Издатель: TAYLOR & FRANCIS LTD

Авторы

  • Golovnev Nicolay N. (Siberian Fed Univ, Dept Chem, Krasnoyarsk, Russia)
  • Molokeev Maxim S. (Kirensky Inst Phys, Lab Crystal Phys, Krasnoyarsk, Russia; Far Eastern State Transport Univ, Dept Phys, Khabarovsk, Russia)
  • Sterkhova Irina V. (Irkutsk Favorsky Inst Chem, Lab Phys Chem, Irkutsk, Russia)
  • Atuchin Victor V. (Inst Semicond Phys, Lab Opt Mat & Struct, Novosibirsk, Russia; Tomsk State Univ, Funct Elect Lab, Tomsk, Russia; Novosibirsk State Univ, Lab Semicond & Dielect Mat, Novosibirsk, Russia)
  • Sidorenko Maxim Y. (Siberian Fed Univ, Dept Chem, Krasnoyarsk, Russia)

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