Crystal structure, spectroscopic and thermal properties of the coordination compounds M(1,3-diethyl-2-thiobarbiturate) M = Rb+, Cs+, Tl+ and NH4+

Тип публикации: статья из журнала

Год издания: 2015

Идентификатор DOI: 10.1016/j.poly.2015.05.048

Ключевые слова: 1,3-Diethyl-2-thiobarbituric acid, Alkali ion, thallium(1) and ammonium cations, Coordination compounds, X-ray diffraction, Thermal analysis, 1 3-Diethyl-2-thiobarbituric acid, Alkali ion thallium(I) and ammonium cations, Coordination compounds, Thermal analysis, X-ray diffraction

Аннотация: Four new compounds of 1,3-diethyl-2-thiobarbituric acid (C8H11N2O2S, Hdetba) with Rb+, Cs+, Tl+ and NH4+ ions were prepared by Hdetba neutralization with the metal carbonates or ammonium hydroxide in aqueous solution. The colorless crystals have been investigated using X-ray diffraction techniques, differential scanning calorimetry, thermogravimetry and infrared spectroscopy. The coordination compounds of MDetba with M = Rb, Cs and Tl crystallize in the orthorhombic space group P2(1)2(1)2(1), but compound NH(4)Detba crystallizes in the triclinic space group P (1) over bar. The MDetba structures were compared at the molecular and supramolecular levels. The Detba(-) ion in the NH4+ compound forms conformer (A) with two diethyl groups on one side of the ion ring, whereas the Detba(-) ion in the Rb(l), Cs(I) and Tl(I) compounds forms conformer (B) with two diethyl groups on different sides of the ring. The results of IR spectroscopy and thermal analysis are consistent with the X-ray data. (C) 2015 Elsevier Ltd. All rights reserved.

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Издание

Журнал: POLYHEDRON

Выпуск журнала: Vol. 98

Номера страниц: 113-119

ISSN журнала: 02775387

Место издания: OXFORD

Издатель: PERGAMON-ELSEVIER SCIENCE LTD

Авторы

  • Molokeev Maxim S. (SB RAS, LV Kirensky Phys Inst, Lab Crystal Phys, Bld 38 Akademgorodok 50, Krasnoyarsk 660036, Russia; Far Eastern State Transport Univ, Dept Phys, Khabarovsk 680021, Russia)
  • Golovnev Nicolay N. (Siberian Fed Univ, Dept Chem, Krasnoyarsk 660041, Russia)
  • Vereshchagin Sergey N. (SB RAS, Lab Catalyt Convers Small Mol, Inst Chem & Chem Technol, Krasnoyarsk 660036, Russia)
  • Atuchin Victor V. (SB RAS, Inst Semicond Phys, Lab Opt Mat & Struct, Novosibirsk 630090, Russia; Tomsk State Univ, Funct Elect Lab, Tomsk 634050, Russia; Novosibirsk State Univ, Lab Semicond & Dielect Mat, Novosibirsk 630090, Russia)

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