F 70 Fluorinated lithium 1,3-diketonates as reagents to modify podands and crown-ethers [Electronic resource] / N. S. Boltacheva, O. V. Fedorova, I. G. Ovchinnikova, O. N. Kazheva, A. N. Chekhlov, O. A. Dyachenko, G. L. Rusinov, V. I. Filyakova, V. N. Charushin // Journal of Fluorine Chemistry. - 2007. - Vol. 128, № 7. - P762-768 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 |
D 55 Diesters on the basis of 16-hydroxyisosteviol and dicarboxylic acids as carriers of Fe(III) picrates [Electronic resource] / V. E. Kataev, O. I. Militsina, I. Yu. Strobykina, A. T. Gubaidullin, V. V. Zverev, O. N. Kataeva, O. V. Fedorova, M. S. Valova, G. L. Rusinov // Journal of Inclusion Phenomena and Macrocyclic Chemistry. - 2008. - Vol. 60, № 1-2. - P51-58. - Библиогр. : с. 58 (32 назв.) 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 |
F 12 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 [Electronic resource] / V. N. Kozhevnikov, O. V. Shabunina, D. S. Kopchuk, M. M. Ustinova, B. Konig, D. N. Kozhevnikov // Tetrahedron. - 2008. - Vol. 64, № 37. - P8963-8973 : рис., табл. - Библиогр. : с. 8973 (21 назв.) . - ISSN 0040-4020 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 |
C 21 Carborane-Functionalized Polyaza Aromatic Ligands: Synthesis, Crystal Structure, and a Copper(II) Complex [Text] / A. M. Prokhorov, D. N. Kozhevnikov, V. L. Rusinov, O. N. Chupakhin, I. V. Glukhov, M. Yu. Antipin, O. N. Kazheva, A. N. Chekhlov, O. A. Dyachenko // Organometallics. - 2006. - Vol. 25, № 12. - P2972-2977 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 |
A 53 An efficient route to 5-(hetero)aryl-2,4'- and 2,2'-bipyridines through readily available 3-pyridyl-1,2,4-triazines [Electronic resource] / V. N. Kozhevnikov, D. N. Kozhevnikov, O. V. Shabunina, V. L. Rusinov, O. N. Chupakhin // Tetrahedron Letters. - 2005. - Vol. 46, № 11. - P1791-1793 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 |
A 53 An efficient route to 5,5''-diaryl-2,2':6',2''-terpyridines through 2,6-bis(1,2,4-triazin-3-yl)pyridines [Electronic resource] / V. N. Kozhevnikov, D. N. Kozhevnikov, O. V. Shabunina, V. L. Rusinov, O. N. Chupakhin // Tetrahedron Letters. - 2005. - Vol. 46, № 9. - P1521-1523 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 |
P 41 Pentanuclear pivalate Ni(II) and Co(II) clusters: Modulation of molecular structures and magnetic properties // Journal of Molecular Structure. - 2003. - Vol. 656, № 1-3. - P207-224 Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): 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. |
B 62 Bis[N-(2-hydroxyethyl)-beta-alaninato]-copper(II) [Text] / A. V. Pestov, E. V. Peresypkina, A. V. Virovets, N. V. Podberezskaya, Yu. G. Yatluk, Yu. A. Skorik // Acta Crystallographica Section C: Crystal Structure Communications. - 2005. - Vol. 61, № 12. - Pm510-m512 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???? |
P 93 Prokhorov, A. M. 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 [Text] / A. M. Prokhorov, P. A. Slepukhin, D. N. Kozhevnikov // Journal of Organometallic Chemistry. - 2008. - Vol. 693, № 10. - P1886-1894 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 |
S 98 Synthesis of cyclometallated platinum complexes with substituted thienylpyridines and detailed characterization of their luminescence properties [Text] / D. N. Kozhevnikov, V. N. Kozhevnikov, M. M. Ustinova, A. Santoro, D. W. Bruce, B. Koenig, T. Fisher, M. Zabel, H. Yersin // Inorganic Chemistry . - 2009. - Vol. 48, № 9. - P4179-4189 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 |
N 52 New metal chelates on the basic of 2-(2-ethoxycarbonyl-3-oxo-3-polyfluoroalkylprop-1-enylamino)benzoic acids [] : доклад, тезисы доклада / Yu. S. Kudyakova, M. V. Goryaeva, Ya. V. Burgart, V. I. Saloutin // XXIV Международная Чугаевская конф. по координационной химии и Молодежная конф.-шк. "Физико-химические методы в химии координационных соединений", СПб, 15-19 июня 2009 г. : тез. докл. - СПб., 2009. - С. 212-213 Рубрики: ХИМИЧЕСКИЕ НАУКИ |
H 99 Hydroxybenzylidene) amino] phenylaminomethylidene-3-oxo-3-polyfluoralkylpropionates [Text] : доклад, тезисы доклада / Yu. S. Kudyakova, M. V. Goryaeva, Ya. V. Burgart, V. I. Saloutin // Fifth International Conference on Organic Chemistry for young Scientists (InterYCOS-2009) "Universities Contribution in the Organic Chemistry Progress", devoted to the 175 th anniversary of D.I.Mendeleevs birthday and 80th anniversary of the Chemistry department of St. Petersburg State University foundation, Saint-Petersburg, 22-25 june 2009 : abstr. - СПб., 2009. - 149 (P-1-43) Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): LIGANDS -- CHELATING SYSTEMS -- CU(II) -- IR SPECTROSCOPY |
C 91 Crystal structure of N-(2-hydroxyethyl)-beta-alanine and racemic mixture of the coordination stereoisomers of N-(2-hydroxyethyl)-beta-alaninatonickel(II) [Electronic resource] / A. V. Pestov, P. A. Slepukhin, A. V. Virovets, N. V. Podberezskaya, Yu. G. Yatluk // Journal of Structural Chemistry. - 2008. - Vol. 49, № 1. - P102-108 Рубрики: ХИМИЧЕСКИЕ НАУКИ Аннотация: N-(2-Hydroxyethyl)-?-alaninatonickel(II) was synthesized by the interaction of basic nickel carbonate with N-(2-hydroxyethyl)-?-alanine. The structures of the chelating agent and its nickel complex were studied by single crystal X-ray diffraction. In the synthesized compound, the nickel ion lies at the center of an octahedron of the N and 2O donor atoms of two tridentate ligands, each ligand having a meridional conformation. The ligands around the central atom are arranged in perpendicular planes. This coordination of two ligands yields two stereoisomers, whose cocrystallization affords a racemate \\\\Expert2\\nbo\\Journal of Structural Chemistry\\2008, V. 49, N 1, p.102.pdf |
H 62 Heterospin complexes based on dinuclear CuII triketonate and nitroxides [Electronic resource] / V. Ovcharenko, S. V. Fokin, G. V. Romanenko, V. Ikorskii, R. S. Sagdeev, D. S. Yachevskii, D. L. Chizhov, V. N. Charushin // Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 2006. - Vol. 55, № 11. - P1904-1908 Рубрики: ХИМИЧЕСКИЕ НАУКИ Аннотация: Heterospin complexes of bis(?2-1,1,2,2,8,8,9,9-octafluorononane-3,5,7-trionato)dicopper(II) ([Cu2L2]) with nitronyl nitroxides 2-(1-methyl-1H-pyrazol-4-yl)-4,4,5,5-tetramethyl-4,5-dihydro-1H-imidazole-1-oxyl 3-oxide (2) and 4,4,5,5-tetramethyl-2-(3-pyridinyl)-4,5-dihydro-1H-imidazole-1-oxyl 3-oxide (1) were synthesized and structurally characterized. Crystals of the complexes are formed by the discrete bis[1-methyl-4-(4,4,5,5-tetramethyl-3-oxide-1-oxyl-4,5-dihydro-1H-imidazol-2-yl)-1H-pyrazole]-bis (?2-1,1,2,2,8,8,9,9-octafluorononane-3,5,7-trionato)dicopper(II) etherate (3) and bis[3-(4,4,5,5-tetramethyl-3-oxide-1-oxyl-4,5-dihydro-1H-imidazol-2-yl)pyridine]-bis (?2-1,1,2,2,8,8,9,9-octafluorononane-3,5,7-trionato)dicopper(II) (4) molecules. Each Cu atom of the dinuclear chelate fragment coordinates one paramagnetic ligand through the N atom of the pyrazole or pyridine fragment, respectively. In complex 3, the paramagnetic ligands are located on one side of the plane of the chelate fragment, whereas the ligands in complex 4 are located above and below the plane of the chelate fragment. The magnetic properties of complexes 3 and 4 are determined by dominant antiferromagnetic exchange interactions between the unpaired electrons of the CuII atoms in the dinuclear Cu2L2 moiety \\\\Expert2\\nbo\\Russian Chemical Bulletin\\2006, 55 (11), 1904.pdf |
3,3,3-Trifluoro-N-(3-trifluoromethylphenyl)-1,2-propanediamine and its N-mono-and N,N-dicarboxyethyl derivatives: synthesis, protolytic and complexation properties [Electronic resource] / V. Yu. Korotaev, Yu. A. Skorik, A. Yu. Barkov, M. I. Kodess, A. Ya. Zapevalov // Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 2005. - Vol. 54, № 11. - P2545-2549 Рубрики: ХИМИЧЕСКИЕ НАУКИ Аннотация: 3,3,3-Trifluoro-N-(3-trifluoromethylphenyl)-1,2-propanediamine (5) was synthesized by the reaction of 2-diazo-1,1,1-trifluoro-3-nitropropane or 3,3,3-trifluoro-1-nitropropene with 3-aminobenzotrifluoride followed by the reduction of the nitro group. The Michael 1,4-addition of diamine 5 to acrylic acid occurs only at the N(1) atom and affords N-mono-or N,N-dicarboxyethyl derivatives 6 and 7, depending on the reactant ratio. Protolytic equilibria 5–7 in aqueous solutions were studied by pH-potentiometry and UV spectroscopy. Only the aliphatic amino group can be protonated in an aqueous solution, while the aromatic amino group remains unprotonated even in 12 M HCl. The stability constants of transition metal (Cu2+, Ni2+, Zn2+) complexes with ligands 5–7 were determined by pH-potentiometric titration. The stability of the complexes and selectivity of the ligands toward Cu2+ ions increase with an increase in the number of N-carboxyethyl groups \\\\Expert2\\nbo\\Russian Chemical Bulletin\\2005, 54 (11), 2545.pdf |
S 98 Synthesis of Functionalized Fluorescent Europium(III) Terpyridyl Chelates [Text] / V. N. Kozhevnikov, D. N. Kozhevnikov, V. L. Rusinov, O. N. Chupakhin, B. Konig // Synthesis. - 2003. - № 15. - P2400-2404. - Bibliogr. : p. 2404 (19 ref.) Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): DIELS-ALDER REACTION -- HETEROCYCLES -- LANTHANIDE -- LIGANDS -- PYRIDINES -- EUROPIUM Аннотация: The synthesis of substituted terpyridines via triazine intermediates is described. The intermediates allow the facile introduction of cyano groups, which are converted into amino diacetic acid moieties. Together with the terpyridine nitrogen atoms they shield coordinated europium(III) ions completely from the solvent. The terpyridines may be further functionalized for specific applications using ligands, bromo substituents, and standard transition metal mediated coupling methods. This makes the title compounds valuable intermediates for the preparation of luminescent probes in biochemistry, medicinal diagnostics or materials science. \\\\Expert2\\nbo\\Synthesis\\2003, v.15. p.2400.Chupakhin.pdf |
A 89 Asymmetric cyclopalladation of 6-ferrocenyl-2,2-bipyridine and 2-ferrocenyl-1,10-phenanthroline [Electronic resource] / L. A. Bulygina, V. I. Sokolov, I. A. Utepova, V. L. Rusinov, O. N. Chupakhin // Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 2007. - Vol. 56, № 5. - P1080-1082 Рубрики: ХИМИЧЕСКИЕ НАУКИ Аннотация: Cyclopalladation of 6-ferrocenyl-2,2?-bipyridine and 2-ferrocenyl-1,10-phenanthroline in the presence of the N-acylamino acid salt as the asymmetric catalyst was performed. Some reactions of the resulting bicyclic palladium derivatives with tridentate (N,N,C) ligands were studied \\\\Expert2\\nbo\\Russian Chemical Bulletin\\2007, 56 (5), 1080-1082.pdf |
5-Acylmethyl-3-(2-pyridyl)-1,2,4-triazines: Synthesis and Complexes with Cu(II) [Electronic resource] / A. M. Prokhorov, D. N. Kozhevnikov, V. L. Rusinov, A. I. Matern, M. M. Nikitin, O. N. Chupakhin, I. L. Eremenko, G. G. Aleksandrov // Russian Journal of Organic Chemistry (Translation of Zhurnal Organicheskoi Khimii). - 2005. - Vol. 41, № 11. - P1702-1705 Рубрики: ХИМИЧЕСКИЕ НАУКИ Аннотация: 5-Acylmethyl-3-(2-pyridyl)-1,2,4-triazines are easily prepared from accessible 3-(2-pyridyl)-1,2,4-triazine 4-oxides by reaction of the latter with acetophenone or trifluoroacetone in the presence of NaH. The compounds obtained behaved as efficient ligands in reaction with CuCl2 furnishing dimeric neutral complexes with Cu(II) whose structure was investigated by means of X-ray diffraction analysis \\\\Expert2\\nbo\\Russian Journal of Organic Chemistry\\2005, 41 (11), 1702-1705.pdf |
K 79 Kovalev, I. S. Reaction of 2-pyridyllithium with azine N-oxides. Simple and convenient method for the synthesis of 2,2-bipyridine 1-oxide and 2,2:6,2:62-tetrapyridine 1-oxide [Electronic resource] / I. S. Kovalev, V. L. Rusinov, O. N. Chupakhin // Chemistry of Heterocyclic Compounds. - 2009. - Vol. 45, № 2. - P176-181 Рубрики: ХИМИЧЕСКИЕ НАУКИ Аннотация: In the reaction of 2-pyridyllithium with quinoline 1-oxide and isoquinoline 2-oxide a nucleophilic substitution of hydrogen occurs to form the corresponding pyridin-2-ylquinolines. A dimerization of the substrate occurs with pyridine 1-oxide, 2,2-bipyridine 1-oxide or quinoxaline N-oxide. A similar dimerization in good yield occurs when treating azine N-oxides with tert-butyllithium and this serves as a simple and convenient method for preparing bi- and tetrapyridines \\\\Expert2\\nbo\\Chemistry of Heterocyclic Compounds\\2009, v.45, N 2, p.176.pdf |
1,2,4-Triazine method of bipyridine ligand synthesis for the preparation of new luminescent Eu(III) complexes [Text] / A. M. Prokhorov, V. N. Kozhevnikov, D. S. Kopchuk, D. N. Kozhevnikov // Tetrahedron. - 2011. - Vol. 67, № 3. - P597-607 Рубрики: ХИМИЧЕСКИЕ НАУКИ Аннотация: The ‘triazine’ methodology for the synthesis of functionalised bipyridine ligands proved to be a convenient method for the preparation of luminescent Eu(III) complexes. The approach allows flexible construction of chromophore and coordination sphere with control of photophysical properties. Europium (III) complexes [Eu1]-[Eu5] prepared in this way exhibit intense long-life metal-centered luminescence in aqueous media. The aromatic substituent in the position 5 of bipyridine has a significant influence on luminescence parameters and is used to introduce functionality for bioconjugation. The complexes [Eu4] and [Eu5] bearing primary amine groups are ready-to-go luminescent ‘tags’ for peptide labeling \\\\Expert2\\nbo\\Tetrahedron\\2011, v. 67, p. 597.pdf |