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Общее количество найденных документов : 75
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1.

Вид документа : Статья из журнала
Шифр издания : 54/F 70
Автор(ы) : Boltacheva N. S., Fedorova O. V., Ovchinnikova I. G., Kazheva O. N., Chekhlov A. N., Dyachenko O. A., Rusinov G. L., Filyakova V. I., Charushin V. N.
Заглавие : Fluorinated lithium 1,3-diketonates as reagents to modify podands and crown-ethers
Место публикации : Journal of Fluorine Chemistry. - 2007. - Vol. 128, № 7. - С. 762-768
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Fluorinated enaminoketones, a new type of ligands, bearing two independent coordination centers (polyether's and fluorinated enaminoketones fragments) have been obtained. The crystal structure of the Cu(II) complex of 1,5-bis-[2-(4`,4`,4`-trifluoro-1`-methyl-3`oxo-but-1`-enylamino)-phenoxy]-3-oxapentane (10) has been elucidated by X-ray crystallography. The results obtained show that the complex 10 consists of two crystallographically independent molecules C26H24CuF6N2O5 (A and B), and the metal atom in the complex 10 has four-coordinated arrangement, as a polyhedron with a distorted square with two nitrogen and two oxygen atoms located in corners.
\\\\expert2\\nbo\\Journal of Fluorine Chemistry\\2007, v.128. p.762.pdf
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2.

Вид документа : Статья из журнала
Шифр издания : 54/D 55
Автор(ы) : Kataev V. E., Militsina O. I., Strobykina I. Yu., Gubaidullin A. T., Zverev V. V., Kataeva O. N., Fedorova O. V., Valova M. S., Rusinov G. L.
Заглавие : Diesters on the basis of 16-hydroxyisosteviol and dicarboxylic acids as carriers of Fe(III) picrates
Место публикации : Journal of Inclusion Phenomena and Macrocyclic Chemistry. - 2008. - Vol. 60, № 1-2. - С. 51-58
Примечания : Библиогр. : с. 58 (32 назв.)
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Diesters on the basis of 16-hydroxyisosteviol and dicarboxylic acids, exhibiting anti-tubercular activity, transport Fe(III) through liquid chloroform membrane which models a cell membrane. It is revealed that fluxes and anti-tubercular activity increase, as the length of the chain (spacer) between two ent-beyran skeletons of diesters increases. Computations on the level DFT/PBE explain the dependence of complexes stability on a structure of diterpenoid ligands. The structures of three diesters were established by single crystal X-ray analysis. ??
\\\\Expert2\\nbo\\Journal of Inclusion Phenomena and Macrocyclic Chemistry\\2008, V.60, N1-2, 51.pdf
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3.

Вид документа : Статья из журнала
Шифр издания : 54/F 12
Автор(ы) : Kozhevnikov V. N., Shabunina O. V., Kopchuk D. S., Ustinova M. M., Konig B., Kozhevnikov D. N.
Заглавие : Facile Synthesis of 6-aryl-3-pyridyl-1,2,4-triazines as a key step towards hightly fluorescent 5-substituted bipyridines and their Zn(II) and Ru(II) complexes
Место публикации : Tetrahedron. - 2008. - Vol. 64, № 37. - С. 8963-8973: рис., табл. - ISSN 0040-4020. - ISSN 0040-4020
Примечания : Библиогр. : с. 8973 (21 назв.)
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: A wide series of substituted bipyridines were obtained through the synthesis of 1,2,4-triazines and their aza Diels–Alder reactions. The reported method facilitates the synthesis of functionally diverse bipyridines that provides fine-tuning of photophysical properties of new ligands and their Zn(II) and Ru(II) complexes. Some of substituted bipyridines exhibit ‘off–on’ fluorescence response toward Zn2+ cations.????
\\\\Expert2\\nbo\\Tetrahedron\\2008, v. 64, N37, p. 8963.pdf
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4.

Вид документа : Статья из журнала
Шифр издания : 54/C 21
Автор(ы) : Prokhorov A. M., Kozhevnikov D. N., Rusinov V. L., Chupakhin O. N., Glukhov I. V., Antipin M. Yu., Kazheva O. N., Chekhlov A. N., Dyachenko O. A.
Заглавие : Carborane-Functionalized Polyaza Aromatic Ligands: Synthesis, Crystal Structure, and a Copper(II) Complex
Место публикации : Organometallics. - 2006. - Vol. 25, № 12. - С. 2972-2977
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: A consecutive aromatic nucleophilic substitutions of hydrogen in 1,2,4-triazine 4-oxides and an aza Diels?Alder reaction is a versatile route to carborane-functionalized bi- and terpyridines and their 1,2,4-triazine analogues. The heterocycles facilitate deboronation of the substituted carboranes, and the carborane moiety has a significant influence on the coordination properties of the ligands as well
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5.

Вид документа : Статья из журнала
Шифр издания : 54/A 53
Автор(ы) : Kozhevnikov V. N., Kozhevnikov D. N., Shabunina O. V., Rusinov V. L., Chupakhin O. N.
Заглавие : An efficient route to 5-(hetero)aryl-2,4'- and 2,2'-bipyridines through readily available 3-pyridyl-1,2,4-triazines
Место публикации : Tetrahedron Letters. - 2005. - Vol. 46, № 11. - С. 1791-1793
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: A new route to substituted bipyridines based on a new method for the synthesis of substituted 3-pyridyl-1,2,4-triazines and their aza-Diels-Alder reactions is shown to be an efficient strategy for the preparation of structurally diverse bipyridine ligands.
\\\\Expert2\\nbo\\Tetrahedron Letters\\2005, v. 46, p.1791.pdf
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6.

Вид документа : Статья из журнала
Шифр издания : 54/A 53
Автор(ы) : Kozhevnikov V. N., Kozhevnikov D. N., Shabunina O. V., Rusinov V. L., Chupakhin O. N.
Заглавие : An efficient route to 5,5''-diaryl-2,2':6',2''-terpyridines through 2,6-bis(1,2,4-triazin-3-yl)pyridines
Место публикации : Tetrahedron Letters. - 2005. - Vol. 46, № 9. - С. 1521-1523
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: A new route to substituted 2,2`:6`,2``-terpyridines based on a new method for the synthesis of substituted 2,6-bis(1,2,4-triazin-3-yl)pyridines and their inverse electron demand Diels-Alder reaction is shown to be an efficient strategy for the synthesis of structurally diverse terpyridine ligands.
\\\\Expert2\\nbo\\Tetrahedron Letters\\2005, v. 46, p.1521.pdf
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7.

Вид документа : Статья из журнала
Шифр издания : 54/P 41
Заглавие : Pentanuclear pivalate Ni(II) and Co(II) clusters: Modulation of molecular structures and magnetic properties
Место публикации : Journal of Molecular Structure. - 2003. - Vol. 656, № 1-3. - С. 207-224
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): cluster--magnetic properties --transition metal
Аннотация: Reaction of nickel cluster Ni9(HOOCCMe3) 4(?4-OH)3(?3-OH) 3(?n-OOCCMe3)12 (1) or cobalt pivalate polymer [Co(OH)n(OOCCMe3)2-n] x (7) with bis[3,5-(dimethylpyrazolyl)]-1,2,4,5-tetrazine (3) in MeCN solution was found as a result in the formation of isostructural pentanuclear clusters of composition M5(?3-OH) 2(?-OOCCMe3)4(?-N,N?,N? -3,5-Me2C3HN2C2(O)N 4)4(MeCN)2 (M = Ni (4), Co (8)) with a planar spirane metal core. Reaction of cobalt complex 7 with 3 in benzene gives rise to a pentanuclear cluster Co5(?3-OH)2(?-OOCCMe 3)4(?-N,N?,N?-3,5-Me2C 3HN2C2(O)N4)4(C 5N2H8)2 (9), containing coordinated pyrazole molecules as terminating ligands instead of labile MeCN ligands in 8. The reaction of cluster 8 with 2,6-diaminopyridine (T = 85 °C) in MeCN results in the substitution of MeCN ligands and formation of a new cluster Co5(?3-OH)2(?-OOCCMe3) 4(?-N,N?,N?-3,5-Me2C3HN 2C2(O)N4)4(C5H 7N3)2 (10) with two 2,6-diaminopyridine ligands instead of MeCN molecules. The reactions of 4 and 8 with NiCl 2·6H2O in MeCN/EtOH solution (3: 1) give rise to isostructural ferromagnetic pentanuclear chloro-bridged clusters M 5(?3-OH)2(?-CI)2(? -OOCCMe3)2(?-N,N?,N?-3,5-Me 2C3HN2C2 (O)N4) 2(?-N,N?,N?,O-3,5-Me2C3HN 2C2(O)N4)2(MeCN)2 (M = Co (11), Ni (12)). The reaction of 8 with solid COCl2·6H 2O in MeCN results in new seven-nuclear ferromagnetic cluster CO 5(?3-OH)2(?-CI)2(? -OOCCMe3)2(?-N,N?,N?-3,5-Me 2C3HN2- C2(O)N4) 2(?-N,N?,N?,O-3,5-Me2C3HN 2C2(O)N4)2(MeCN) 2[Co(CH3CN)CI2]2 (13). The molecular structures of 4, 8, 9, 10, 12 and 13 established by X-ray diffraction studies and magnetic behavior of new nickel and cobalt pivalate clusters are discussed.
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8.

Вид документа : Статья из журнала
Шифр издания : 54/B 62
Автор(ы) : Pestov A. V., Peresypkina E. V., Virovets A. V., Podberezskaya N. V. , Yatluk Yu. G., Skorik Yu.A.
Заглавие : Bis[N-(2-hydroxyethyl)-beta-alaninato]-copper(II)
Место публикации : Acta Crystallographica Section C: Crystal Structure Communications. - 2005. - Vol. 61, № 12. - С. m510-m512
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: The CuII ion in the title complex, [Cu(C5H 10NO3)2] or [Cu(He-ala)2] [He-ala = W-(2-hydroxyethyl)-?-alaninate], resides at the inversion centre of a square bipyramid comprised of two facially arranged tridentate He-ala ligands. Each He-ala ligand binds to a CuII ion by forming one six-membered ?-alaninate chelate ring in a twist conformation and one five-membered ethanolamine ring in an envelope conformation, with Cu-N = 2.017 (2) A, Cu-OCoo = 1.968 (1) A and Cu-OOH = 2.473 (2) A. The [Cu(He-ala)2] molecules are involved in a network of O-H?O and N-H?O hydrogen bonds, forming layers parallel to the (101?) plane. The layers are connected into a three-dimensional structure by van der Waals interactions, so that the molecular centres form pseudo-face-centered close packing. © 2005 International Union of Crystallography????
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9.

Вид документа : Статья из журнала
Шифр издания : 54/P 93
Автор(ы) : Prokhorov A. M., Slepukhin P. A., Kozhevnikov D. N.
Заглавие : CuCl2 induced reactions of 6-ethynyl- and 6-cyano-5-aryl-2,2-bipyridines with various N- and O-nucleophiles in comparison with the reactions of relative 1,2,4-triazines
Место публикации : Journal of Organometallic Chemistry. - 2008. - Vol. 693, № 10. - С. 1886-1894
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Meanwhile 5-aryl-6-cyano-2,2-bipyridines are very stable towards various nucleophiles, addition copper(II) chloride to the reactional mixture facilitates nucleophilic addition to the cyano group dramatically. The cyanobipyridines react easily with water, methanol, ethanolamine in the presence of CuCl2 yielding well-crystallized complexes containing carboxylates, carboximidates or carboxamidines as ligands. 5-Cyano-1,2,4-triazines are more active in the reactions due to higher electron-withdrawing properties of this heterocycle. Due to the same reason acetylene moiety of 5-ethynyl-3-pyridyl-1,2,4-triazine adds water quite easily but in the presence of copper chloride as well
\\\\Expert2\\nbo\\Journal of Organometallic Chemistry\\2008, v.693, p.1886.pdf
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10.

Вид документа : Статья из журнала
Шифр издания : 54/S 98
Автор(ы) : Kozhevnikov D. N., Kozhevnikov V. N., Ustinova M. M., Santoro A., Bruce D.W., Koenig B., Fisher T., Zabel M., Yersin H.
Заглавие : Synthesis of cyclometallated platinum complexes with substituted thienylpyridines and detailed characterization of their luminescence properties
Место публикации : Inorganic Chemistry . - 2009. - Vol. 48, № 9. - С. 4179-4189
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Synthesis of various derivatives of 2-(2-thienyl)pyridine via substituted 3-thienyl-1,2,4-triazines is reported. The final step of the synthesis is a transformation of the triazine ring to pyridine in an aza-Diels-Alder-type reaction. The resulting 5-aryl-2-(2-thienyl)pyridines (HL1-HL4) and 5-aryl-2-(2-thienyl)cyclopenteno[c]pyridines (HL5-HL8) (with aryl = phenyl, 4-methoxyphenyl, 2-naphtyl, and 2-thienyl) were used as cyclometallating ligands to prepare a series of eight luminescent platinum complexes of the type [Pt(L)(acac)] (L = cyclometallating ligand, acac = acetylacetonato). X-ray single crystal structures of three complexes of that series, [Pt(L5)(acac)] = [Pt(5-phenyl- 2-(2-thienyl)cyclopenteno[c]pyridine)(acac)], [Pt(L6)(acac)] = [Pt(5-(4-methoxy)-2-(2-thienyl)cyclopenteno[c]py- ridine)(acac)], and [Pt(L7)(acac)] = [Pt(5-(2-naphtyl)-2-(2-thienyl) cyclopenteno[c]pyridine)(acac)] were determined. Photoluminescence and electronic absorption spectra of the new [Pt(L)(acac)] complexes are reported. For two representative compounds of that series, [Pt(L4)(acac)] and [Pt(L5)(acac)], a detailed photophysical characterization based on highly resolved emission and excitation spectra, as well as on emission decay properties, was carried out. The studies down to low temperature (T = 1.2 K) and up to high magnetic fields (6 = 10 T) allowed us to characterize the three individual substates of the emitting triplet state. In particular, it is shown that the lowest triplet states of [Pt(L4)(acac)] and [Pt(L5)(acac)] are largely ligand-centered (LC) of3jtjt*character, which experience only weak spin- orbit couplings to higher lying singlet states
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