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Golovnev, N. N.
Crystal structure of catena-di(2-thiobarbiturato-O, S) aqualead(II) / N. N. Golovnev, M. S. Molokeev // J. Struct. Chem. - 2013. - Vol. 54, Is. 5. - P. 968-971, DOI 10.1134/S0022476613050193. - Cited References: 16 . - ISSN 0022-4766

РУБ Chemistry, Inorganic & Nuclear + Chemistry, Physical
Рубрики:
THIOBARBITURIC ACID COMPLEXES
COLLECTION
Кл.слова (ненормированные):
catena-di(mu(2)-2-thiobarbiturato-O,S)aqualead(II) -- crystal structure -- hydrogen bonds -- Pi-Pi interaction
Аннотация: The crystal structure of catena-di(mu(2)-2-thiobarbiturato-O,S)aqualead(II) C8H8N4O5S2Pb (C4H4N2O2S is 2-thiobarbituric acid, H(2)TBA) is determined. Crystallographic data for catena-[Pb(H2O)(mu(2)-HTBA-O,S)(2)] are as follows: a = 6.5972(1) , b = 9.8917(2) , c = 10.0893(2) , alpha = 106.702(1)A degrees, beta = 93.395(2)A degrees, gamma = 107.48(1)A degrees, V = 593.82(2) (3), space group , Z = 2. The Pb2+ ion is linked with six monodentate HTBA(-) ligands through two O atoms and four S atoms and also connected with a water molecule. Additionally, there is a shortened Pb-S contact (3.622 ), given which the complex polyhedron represents a distorted square antiprism. Hydrogen bonds N-HaEuro broken vertical bar O and O-HaEuro broken vertical bar O form a branched three-dimensional network. The structure is also stabilized by the pi-pi interaction of heterocyclic HTBA(-) ions.

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Публикация на русском языке Головнёв, Николай Николаевич. Кристаллическая структура катена-ди(2-тиобарбитурато-O,S)аквасвинца(II) / Н. Н. Головнёв // Журнал структурной химии. - 2013. - Т. 54, № 5. - С. 940-943

Держатели документа:
Siberian Fed Univ, Krasnoyarsk, Russia
Russian Acad Sci, Siberian Div, LV Kirensky Phys Inst, Krasnoyarsk, Russia

Доп.точки доступа:
Molokeev, M. S.; Молокеев, Максим Сергеевич; Головнёв, Николай Николаевич
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Crystal structure and properties of the precursor [Ni(H2O)6](HTBA)2·2Н2О and the complexes M(HTBA)2(H2O)2 (M = Ni, Co, Fe) / N. N. Golovnev [et al.] // Polyhedron. - 2014. - Vol. 70. - P. 71-76, DOI 10.1016/j.poly.2013.12.021. - Cited References: 32 . - ISSN 0277-5387

РУБ Chemistry, Inorganic & Nuclear + Crystallography
Рубрики:
2-THIOBARBITURIC ACID
   THIOBARBITURIC ACID
   COLLECTION
   POLYMERS
Кл.слова (ненормированные):
2-Thiobarbiturate complexes -- 3D elements -- IR spectra -- Structure -- Synthesis -- Thermal stability
Аннотация: Four new compounds, the discrete complex [Ni(H2O) 6](HTBA)2 .2H2O (1) and the polymers Ni(H2O)2(HTBA-O,S)2 (2), Co(H 2O)2(HTBA-O,S)2 (3) and Fe(H2O) 2(HTBA-O,S)2 (4) (H2TBA = 2-thiobarbituric acid, C4H4N2O2S), have been synthesized and structurally characterized. The structure of 1 has been solved by X-ray single-crystal diffraction analysis. The Ni(H2O) 6 2+ cation has an almost ideal octahedral geometry, and there is no coordination of Ni(II) by HTBA- in 1. Complexes 2-4 have been characterized by powder XRD, TG-DSC and FT-IR. In the isostructural polymers 2-4, the metals are six-coordinated, and the octahedrons are connected by μ2-O,S bridging ligands. Each of the M(II) ions is surrounded by two water molecules, two O-coordinated HTBA- ions and two S-coordinated HTBA- ions, with all pairs being in trans-positions. Hydrogen bonding and π-π interactions play an important role for the construction of the supramolecular 3D structures of 2-4. The formation of the complexes has been evidenced by infrared spectroscopy. The thermal decomposition of 2-4 under oxidative conditions has been divided into three major stages: dehydration, oxidative degradation of the organic moiety and transformation of the inorganic residue. © 2013 Elsevier Ltd. All rights reserved.

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Держатели документа:
Siberian Fed Univ, Dept Chem, Krasnoyarsk 660041, Russia
SB RAS, LV Kirensky Phys Inst, Lab Crystal Phys, Krasnoyarsk 660036, Russia
SB RAS, Inst Chem & Chem Technol, Lab Catalyt Convers Small Mol, Krasnoyarsk 660036, Russia
SB RAS, Inst Semicond Phys, Lab Opt Mat & Struct, Novosibirsk 630090, Russia
Tomsk State Univ, Tomsk 634050, Russia

Доп.точки доступа:
Golovnev, N. N.; Головнёв, Николай Николаевич; Molokeev, M. S.; Молокеев, Максим Сергеевич; Vereshchagin, S. N.; Atuchin, V. V.; Sidorenko, M. Y.; Dmitrushkov, M. S.
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Golovnev, N. N.
Crystal structure of catena-(2-thiobarbiturato) dithallium(I) / N. N. Golovnev, M. S. Molokeev // J. Struct. Chem. - 2014. - Vol. 55, Is. 1. - P. 125-129, DOI 10.1134/S002247661401020X. - Cited References: 12. - The work was supported by the grant of the President of the Russian Federation for the support of leading scientific schools of the Russian Federation (NSh-924.2014.2) and the Federal Targeted Program "Scientific and Scientific Pedagogical Personnel of Innovative Russia, 2009-2013" (State contracts Nos. 02.740.11.0269 and 02.740.11.0629) . - ISSN 0022-4766. - ISSN 1573-8779

РУБ Chemistry, Inorganic & Nuclear + Chemistry, Physical
Рубрики:
THIOBARBITURIC ACID COMPLEXES
COLLECTION
Кл.слова (ненормированные):
catena-2-(thiobarbiturato)dithallium(I) -- crystal structure -- hydrogen bonds -- π-π interaction
Аннотация: By powder X-ray diffraction the crystal structure of catena-(2-thiobarbiturato)dithallium(I) C4H2N2O2STl2(C4H4N2O2S is 2-thiobarbituric acid, Н2ТBA), Tl2TBA, is determined. Crystallographic data for Tl2TBA are as follows: a = 15.1039(3) Å, b = 12.0818(2) Å, c = 3.86455(6) Å, β = 97.203(1)°, V = 741.34(2) Å3, space group P21/n, Z = 4. There are two non-equivalent thallium atoms in the structure. The Tl1 polyhedron is a distorted trigonal prism due to the shortened Tl–S contact (3.634 Å), and the Tl2 polyhedron is a distorted square antiprism.

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Публикация на русском языке Головнёв, Николай Николаевич. Кристаллическая структура катена-2-тиобарбитурата диталлия(I) [Текст] / Н. Н. Головнёв, М. С. Молокеев // Журн. структ. химии. - 2014. - Т. 55 № 1. - С. 130-134

Golovnev, N. N.
Structures of bis(2-thiobarbiturato-O)tetraaquamagnesium and catena-[(μ2-2-thiobarbiturato-O,O)(2-thiobarbiturato-O) bis(μ2-aqua)diaquastrontium] monohydrate / N. N. Golovnev, M. S. Molokeev // Russ. J. Inorg. Chem. - 2014. - Vol. 59, Is. 2. - P. 72-78, DOI 10.1134/S0036023614020107. - Cited References: 15 . - ISSN 0036-0236. - ISSN 1531-8613

РУБ Chemistry, Inorganic & Nuclear
Рубрики:
2-THIOBARBITURIC ACID
COLLECTION
Аннотация: The crystal structures of bis(2-thiobarbiturato-O)tetraaquamagnesium Mg(H2O)(4)(HTBA-O)(2) I and catena-[(mu(2)-2-thiobarbiturato-O,O)(2-thiobarbiturato-O)bis(mu(2)-aqua)diaquastrontium] monohydrate catena-[Sr(mu(2)-H2O)(2)(H2O)(2)(mu(2)-HTBA-O,O)(HBTA-O)] (n) center dot nH(2)O (II), where H(2)TBA is 2-thiobarbituric acid C4H4N2O2S, have been determined. Crystal data for a=6.7598(2) , b = 7.6060(2) , c = 8.5797(2) , alpha = 79.822(2)A degrees, beta = 76.622(1)A degrees, gamma = 69.124(1)A degrees, V = 398.82(2) (3), space group P , Z = 1; for II: a = 20.8499(4) , b = 19.2649(5) , c = 4.14007(9) , beta = 92.023(2)A degrees, V = 1661.91(7) (3), space group P2(1)/n, Z = 4. The Mg2+ ion in I is bonded to six O atoms of two HTBA(-) ions and four water molecules that form a nearly regular octahedron. Each Sr2+ ion in II is coordinated to three oxygen atoms of three HTBA(-) ions and six water molecules that form an almost ideal tricapped trigonal prism. These polyhedra share edges to form infinite chains. Intermolecular hydrogen bonds create layered structures of I and II.

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Публикация на русском языке Головнёв, Николай Николаевич. Структуры бис-(2-тиобарбитурато-O)-тетрааквамагния и моногидрата катена-[(μ2-2-тиобарбитурато-O,O)-(2-тиобарбитурато-O)-бис(μ2-аква)-диаквастронция] [Текст] / Н. Н. Головнёв, М. С. Молокеев // Журн. неорг. химии : Наука, 2014. - Т. 59 № 2. - С. 200-206

Держатели документа:
Siberian Fed Univ, Krasnoyarsk 660041, Russia
Russian Acad Sci, Siberian Branch, Kirenskii Inst Phys, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Molokeev, M. S.; Молокеев, Максим Сергеевич; Головнёв, Николай Николаевич
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Golovnev, N. N.
Crystal structures of cesium and rubidium 2-thiobarbiturates / N. N. Golovnev, M. S. Molokeev // Russ. J. Inorg. Chem. - 2014. - Vol. 59, Is. 9. - P. 943-946, DOI 10.1134/S003602361409006X. - Cited References: 13 . - ISSN 0036-0236. - ISSN 1531-8613

РУБ Chemistry, Inorganic & Nuclear
Рубрики:
ACID
COLLECTION
Аннотация: The crystal structures of cesium 2-thiobarbiturate C4H3CsN2O2S (I) and rubidium 2-thiobarbiturate C4H3N2O2RbS (II) (C4H4N2O2S is 2-thiobarbituric acid, H2TBA) have been determined. Isostructural crystals are monoclinic; a = 7.9609(3) Å,b = 11.8474(3) Å, c = 7.7317(2) Å, β = 101.285(3)°, V = 715.13(4) Å3, space group C2/m, Z = 4 for I and a = 7.6369(2) Å, b = 11.7690(3) Å, c = 7.5568(2) Å, β = 100.212(1)°, V = 668.44(3) Å3, space group C2/m, Z = 4 for II. Each metal ion in complexes I and II is bonded to four oxygen atoms and two sulfur atoms at the vertices of a six-vertex polyhedron. N-H…O hydrogen bonds link HTBA-ions into chains. The structure is also stabilized by the “head-to-tail” π-π interaction of HTBA-ions.

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