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    Crystal structure and magnetic properties of Mn substituted ludwigite Co3O2BO3 / Yu. V. Knyazev [et al.] // J. Magn. Magn. Mater. - 2012. - Vol. 324, Is. 6. - P. 923-927, DOI 10.1016/j.jmmm.2011.07.044. - Cited References: 15. - The study was supported by the Russian Foundation for Basic Research (Project no. 09-02-00171-a), the Federal Agency for Science and Innovation (Rosnauka) (Project no. MK-5632.2010.2), the Physical Division of the Russian Academy of Science, the program "Strongly Correlated Electrons", Project 2.3.1. . - ISSN 0304-8853
   Перевод заглавия: Кристаллическая структура и магнитные свойства Mn-замещенного людвигита Co3O2BO3

РУБ Materials Science, Multidisciplinary + Physics, Condensed Matter
Рубрики:
BOND VALENT SUMS
   COORDINATION CHEMISTRY
   OXIDATION -STATE
   O BONDS
   COMPLEXES
   MANGANESE
   COBALT
Кл.слова (ненормированные):
Transition metal oxyborate -- Distinct crystallographic position -- Spin glass magnetic ordering
Аннотация: The needle shape single crystals Co3−x MnxO2BO3 with ludwigite structure have been prepared. According to the X-ray diffraction data the preferable character of distinct crystallographic positions occupation by Mn ions is established. Magnetization field and temperature dependencies are measured. Paramagnetic Curie temperature value Θ=−100 K points out the predominance of antiferromagnetic interactions. Spin-glass magnetic ordering takes the onset at TN=41 K. The crystallographic and magnetic properties of Co3O2BO3:Mn are compared with the same for the isostructural analogs Co3O2BO3 and CoO2BO3:Fe.

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Доп.точки доступа:
Knyazev, Yu.V.; Князев, Юрий Владимирович; Ivanova, N. B.; Иванова, Наталья Борисовна; Kazak, N. V.; Казак, Наталья Валерьевна; Platunov, M. S.; Платунов, Михаил Сергеевич; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Vasiliev, A. D.; Васильев, Александр Дмитриевич; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Yurkin, G. Yu.; Юркин, Глеб Юрьевич
}
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    Synthesis and molecular structure of cobalt(II) complex with 1-(1-silatranylmethyl)-1,2,4-triazole / A. D. Vasiliev [et al.] // Struct. Chem. - 2013. - Vol. 24, Is. 4. - P. 1001-1005, DOI 10.1007/s11224-012-0121-0. - Cited References: 24 . - ISSN 1040-0400
   Перевод заглавия: Синтез и молекулярная структура комплекса кобальта(II) с 1-(1-силатранилметил)-1,2,4-триазолом

РУБ Chemistry, Multidisciplinary + Chemistry, Physical + Crystallography
Рубрики:
REACTIVITY
   DERIVATIVES
   CRYSTAL
   SPECTRA
Кл.слова (ненормированные):
Complexes -- 1-(1-Silatranylmethyl)-1,2,4-triazole -- Cobalt dichloride -- X-ray diffraction
Аннотация: Reaction of cobalt chloride with 1-(1-silatranylmethyl)-1,2,4-triazole in benzene afforded complex CoCl2 center dot 2L (L = 1-(1-silatranylmethyl)-1,2,4-triazole). It was isolated as the solvate [CoCl2 center dot 2L]center dot CH2Cl2 (1) by recrystallization from dichloromethane and structurally characterized by single-crystal X-ray diffraction. It crystallizes in the monoclinic space group P2(1)/m with a = 6.798(2) E, b = 20.326(5) E, c = 11.005(3) E, and Z = 4. The cobalt atom is in slightly distorted square-planar environment, coordinated to two nitrogen atoms from two ligands and two chloride ions.

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Держатели документа:
Russian Acad Sci, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
East Siberian State Academician Educ, Irkutsk 664011, Russia
Russian Acad Sci, Siberian Branch, AE Favorsky Irkutsk Inst Chem, Irkutsk 664033, Russia

Доп.точки доступа:
Vasiliev, A. D.; Васильев, Александр Дмитриевич; Zel'bst, E. A.; Soldatenko, A. S.; Bolgova, Yu.I.; Trofimova, O. M.; Voronkov, M. G.
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    Golovnev, N. N.
    Bridging behaviour of the 2-thiobarbiturate anion in its complexes with Li-I and Na-I / N. Golovnev, M. S. Molokeev // Acta Crystallogr. C. - 2013. - Vol. 69, Pt. 7. - P. 704-708, DOI 10.1107/S0108270113014078. - Cited References: 26 . - ISSN 0108-2701
   Перевод заглавия: Мостиковое поведение аниона 2-тиобарбитурата в комплексах с Li(I) и Na(I)

РУБ Crystallography
Рубрики:
THIOBARBITURIC ACID
NETWORKS
Аннотация: The structures of the Li-I and Na-I salts of 2-thiobarbituric acid (2-sulfanylidene-1-3-diazinane-4,6-dione, H(2)TBA) have been studied. mu-Aqua-octaaquabis(mu-2-thiobarbiturato-kappa O-2:O')bis(2-thiobarbiturato-kappa O)tetralithium(I) dihydrate, [Li-4(C4H3N2O2S)(4)(H2O)(9)]center dot 2H(2)O, (I), crystallizes with four symmetry-independent four-coordinated Li-I cations and four independent HTBA(-) anions. The structure contains two structurally non-equivalent Li-I cations and two non-equivalent HTBA(-) anions (bridging and terminal). Eight of the coordinated water ligands are terminal and the ninth acts as a bridge between Li-I cations. Discrete [Li-4(HTBA)(4)(H2O)(9)]center dot 2H(2)O complexes form two-dimensional layers. Neighbouring layers are connected via hydrogen-bonding interactions, resulting in a three-dimensional network. Poly[mu(2)-aqua-tetraaqua(mu(4)-2-thiobarbiturato-kappa O-4:O:S:S)(mu(2)-thiobarbiturato-kappa O-2:S)disodium(I)], [Na-2(C4H3N2O2S)(2)(H2O)(5)](n), (II), crystallizes with six-coordinated Na-I cations. The octahedra are pairwise connected through edge-sharing by a water O atom and an O atom from the mu(4)-HTBA(-) ligand, and these pairs are further top-shared by the S atoms to form continuous chains along the a direction. Two independent HTBA(-) ligands integrate the chains to give a three-dimensional network.

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Держатели документа:
Siberian State Univ, Krasnoyarsk 660041, Russia
Russian Acad Sci, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Molokeev, M. S.; Молокеев, Максим Сергеевич; Головнёв, Николай Николаевич
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Chemistry of vinylidene complexes. XX. Intramolecular carbonylation of vinylidene on the MnFe center: Spectroscopic and structural study. X-ray structure of the new trimethylenemethane type MnFe complex / A. B. Antonova [et al.] // J. Organomet. Chem. - 2011. - Vol. 696, Is. 4. - P. 963-970, DOI 10.1016/j.jorganchem.2010.10.035. - Cited References: 52. - This work was partially supported by the Presidium of the Russian Academy of Sciences (Program for Basic Research, Project No. 7.18) and Russian Foundation for Basic Research (Grant No. 09-03-90745-mob_st). Authors are grateful to Prof. N.A. Ustynyuk for useful discussions, Dr. E.A. Shor and Dr. A.M. Shor for giving the data of quantum chemical study. . - ISSN 0022-328X

РУБ Chemistry, Inorganic & Nuclear + Chemistry, Organic
Рубрики:
MOLECULAR-STRUCTURE
   ORGANOMETALLIC CHEMISTRY
   TRICARBONYL COMPLEXES
   UNSATURATED CARBENES
   METAL VINYLIDENES
   TRANSITION-METALS
   ORGANIC-SYNTHESIS
   CRYSTAL-STRUCTURE
   IRON TRICARBONYL
   MANGANESE
Кл.слова (ненормированные):
Manganese -- Iron -- Carbonyl complexes -- Heteronuclear vinylidene complexes -- Intramolecular vinylidene carbonylation -- Trimethylenemethane complexes
Аннотация: Reactions of Fe-2(CO)(9) with Cp(CO)(2)Mn=C=CHPh (1) and Cp(CO)(PPh3)Mn=C=CHPh (3) gave the heterometallic trimethylenemethane complexes eta(4)-{C[Mn(CO)(2)Cp](CO)CHPh}Fe(CO)(3) (2) and eta(4)-{C[Mn(CO)(PPh3)Cp](CO)CHPh}Fe(CO)(3) (4), respectively. The formation of the benzylideneketene [PhHC=C=C=O] fragment included in complexes 2 and 4 occurs via intramolecular coupling of the carbonyl and vinylidene ligands. The structures of 3 and 4 were determined by single crystal XRD methods. The influence of the nature of the L ligands at the Mn atom on the structural and spectroscopic characteristics of eta(4)-{C[Mn(CO)(L)Cp](CO)CHPh}Fe(CO)(3) (L = CO (2), PPh3 (4)) is considered. According to the VT H-1 and C-13 NMR spectra, complex 2 reversibly transforms in solution into mu-eta(1):eta(1)-vinylidene isomer Cp(CO)(2)MnFe(mu-C=CHPh)(CO)(4) (2a), whereas complex 4 containing the PPh3 ligand is not able to a similar transformation. (C) 2010 Elsevier B.V. All rights reserved.

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Держатели документа:
Russian Acad Sci, Inst Chem & Chem Technol, Siberian Branch, Krasnoyarsk 660049, Russia
Russian Acad Sci, Inst Phys, Siberian Branch, Krasnoyarsk 660036, Russia
Siberian Fed Univ, Krasnoyarsk 660041, Russia
Russian Acad Sci, AN Nesmeyanov Organoelement Cpds Inst, Moscow 119991, Russia

Доп.точки доступа:
Antonova, A. B.; Chudin, O. S.; Vasiliev, A. D.; Васильев, Александр Дмитриевич; Rubaylo, A. I.; Verpekin, V. V.; Sokolenko, W. A.; Pavlenko, N. I.; Semeikin, O. V.
}
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    Chemistry of vinylidene complexes. XXI. Synthesis, spectroscopic and structural study of the RePt and MnPt μ–vinylidene complexes / A. B. Antonova [et al.] // Inorg. Chim. Acta. - 2013. - Vol. 394. - P. 328–336DOI 10.1016/j.ica.2012.06.038. - Cited References: 48
   Перевод заглавия: Химия винилиденовых комплексов. XXI. Синтез, спектроскопическое и структурное исследование RePt и MnPt μ-винилиденовых комплексов.
Аннотация: Reaction of Cp(CO)2Redouble bond; length as m-dashCdouble bond; length as m-dashCHPh (1) with Pt(PPh3)4 and subsequent treatment of Cp(CO)2RePt(μ–Cdouble bond; length as m-dashCHPh)(PPh3)2 (2) with diphosphines P–P = dppe, dppp afforded new complexes Cp(CO)2RePt(μ–Cdouble bond; length as m-dashCHPh)(P–P) (4, 5). The structures of Cp(CO)2RePt(μ–Cdouble bond; length as m-dashCHPh)(dppp) (5) and Cp(CO)2MnPt(μ–Cdouble bond; length as m-dashCHPh)(dppp) (10) have been determined by single crystal XRD. The influence of the nature of M = Re, Mn and L2 = (PPh3)2, dppm, dppe, dppp at the Pt atom on the structural, IR and 1H, 13C and 31P NMR spectroscopic characteristics of complexes Cp(CO)2MPt(μ–Cdouble bond; length as m-dashCHPh)(L2) (2–5, 7–10) is considered.

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Держатели документа:
Russian Acad Sci, Inst Chem & Chem Technol, Siberian Branch, Krasnoyarsk 660036, Russia
Russian Acad Sci, Inst Phys, Siberian Branch, Krasnoyarsk 660036, Russia
Siberian Fed Univ, Krasnoyarsk 660041, Russia
Russian Acad Sci, AN Nesmeyanov Organoelement Cpds Inst, Moscow 119991, Russia;

Доп.точки доступа:
Antonova, A. B.; Verpekin, V. V.; Chudin, O. S.; Vasiliev, A. D.; Васильев, Александр Дмитриевич; Pavlenko, N. I.; Sokolenko, W. A.; Rubaylo, A. I.; Semeikin, O. V.
}
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    2-Thiobarbiturate complexes of Ca(II): synthesis, crystal structure and thermal properties / N. N. Golovnev [et al.] // 3 Int. Conf. on the Advancement of Mater. and Nanotechn. (ICAMN 2013) : Programme and abstracts book. - 2013. - P. 157
   Перевод заглавия: 2-тиобарбитуровые комплексы Ca(II): синтез, кристаллическая структура и термические свойства
Кл.слова (ненормированные):
calcium -- 2-thiobarbituric acid -- crystal structure -- thermal decomposition -- IR spectroscopy

Доп.точки доступа:
Golovnev, N. N.; Головнёв, Николай Николаевич; Molokeev, M. S.; Молокеев, Максим Сергеевич; Vereschagin, S. N.; Верещагин, С. Н.; Atuchin, V. V.; Атучин, Виктор Валерьевич; International Conference on the Advancement of Materials and Nanotechnology (3 ; 2013 ; Nov. ; 19-22 ; Penang, Malaysia)
}
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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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Krasnov, P. O.
Interaction of Scandium and Titanium Atoms with a Carbon Surface Containing Five- and Seven-Membered Rings / P. O. Krasnov, N. S. Eliseeva, A. A. Kuzubov // J. Exp. Theor. Phys. - 2012. - Vol. 114, Is. 1. - P. 80-84, DOI 10.1134/S1063776111160059. - Cited References: 25. - We are grateful to the Joint Supercomputer Center, Russian Academy of Sciences, for the possibility of using the computer cluster for our quantum-chemical calculations. This work was supported by the Ministry of Education and Science of the Russian Federation (federal program "Human Capital for Science and Education in Innovative Russia" for 2009-2013). . - ISSN 1063-7761. - ISSN 1090-6509

РУБ Physics, Multidisciplinary
Рубрики:
MOLECULAR-HYDROGEN COMPLEXES
   STORAGE
   NANOTUBES
   TRANSITION
   ENERGY
   TEMPERATURE
   EXCHANGE
   DYNAMICS
   METALS
   C60
Аннотация: The use of carbon nanotubes coated by atoms of transition metals to store molecular hydrogen is associated with the problem of the aggregation of these atoms, which leads to the formation of metal clusters. The quantum-chemical simulation of cluster models of the carbon surface of a graphene type with scandium and titanium atoms has been performed. It has been shown that the presence of five- and seven-membered rings, in addition to six-membered rings, in these structures makes it possible to strongly suppress the processes of the migration of metal atoms over the surface, preventing their clustering.

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Публикация на русском языке Краснов, Павел Олегович. Взаимодействие атомов скандия и титана с углеродной поверхностью, содержащей пятичленные и семичленные кольца [Текст] / П. О. Краснов, Н. С. Елисеева, А. А. Кузубов // Журн. эксперим. и теор. физ. : Наука, 2012. - Т. 141 Вып. 1. - С. 90-95

Держатели документа:
[Krasnov, P. O.
Kuzubov, A. A.] Siberian State Technol Univ, Krasnoyarsk 660049, Russia
[Krasnov, P. O.
Kuzubov, A. A.] Russian Acad Sci, Siberian Branch, Kirensky Inst Phys, Krasnoyarsk 660036, Russia
[Eliseeva, N. S.
Kuzubov, A. A.] Siberian Fed Univ, Krasnoyarsk 660041, Russia

Доп.точки доступа:
Eliseeva, N. S.; Kuzubov, A. A.; Кузубов, Александр Александрович; Краснов, Павел Олегович; Ministry of Education and Science of the Russian Federation
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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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10.

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