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Zhanna A. Krasnaya Vladimir A. Kuz’min Lyubov V. Litvinkova Evgeniya O. Dorofeeva Sergei G. Zlotin 《Mendeleev Communications》2013,23(4):212-214
New bischromophoric dyes (thiacarbocyanine and thiadicarbocyanine) containing coumarin moieties at each of the two benzothiazole systems, as well as monomethinecyanine containing coumarin moiety at only one heterocyclic system, manifest significant batho-chromic shift compared to relative coumarin-free dyes. 相似文献
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Russian Journal of Coordination Chemistry - The data on the rare-earth metal complexes with the anionic (halides, NCS) and neutral N,O-donor ligands are systematized and generalized. The influence... 相似文献
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The inverse problem of determining 2D spatial part of integral member kernel in integro‐differential wave equation is considered. It is supposed that the unknown function is a trigonometric polynomial with respect to the spatial variable y with coefficients continuous with respect to the variable x. Herein, the direct problem is represented by the initial‐boundary value problem for the half‐space x>0 with the zero initial Cauchy data and Neumann boundary condition as Dirac delta function concentrated on the boundary of the domain . Local existence and uniqueness theorem for the solution to the inverse problem is obtained. 相似文献
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S. P. Petrosyants A. B. Ilyukhin Zh. V. Dobrokhotova N. N. Efimov V. M. Novotortsev 《Russian Journal of Coordination Chemistry》2017,43(6):352-363
Molecular [M(NCS)3(H2O)(Me4Phen)2] · (Me4Phen) · 0.75EtOH and anionic [H(Me4Phen)][М(NCS)4(Me4Phen)2] complexes are synthesized using thiocyanates М(NCS)3 · 6H2O (M = Y, Eu, Tb) and 3,4,7,8-tetramethyl-1,10-phenanthroline (Me4Phen). The complexes are characterized by IR spectroscopy and elemental, X-ray phase, and X-ray diffraction analyses (CIF files CCDC no. 1498178–1498184). The thermoanalytical study shows that the solvate molecules Me4Phen are localized in the internal coordination sphere of the molecular complexes at 195–250°C. The magnetic behavior of the Eu and Tb complexes is governed by the nature of the Ln ion. 相似文献
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Petrosyants S. P. Babeshkin K. A. Ilyukhin A. B. Efimov N. N. 《Russian Journal of Coordination Chemistry》2021,47(3):165-173
Russian Journal of Coordination Chemistry - The complexes [Tb(Bipy)2(H2O)2Cl2]Cl (I), [Ln(Bipy)(H2O)6]Cl3·2H2O·0.5Bipy (Ln = Dy (II), Yb (IV)), [Er(Bipy)2(H2O)3Cl]Cl2·2H2O (III), and... 相似文献
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Lubov' V. Snegur Yury S. Nekrasov Nataliya S. Sergeeva Zhanna V. Zhilina Vera V Gumenyuk Zoya A. Starikova Alexander A. Simenel Nataliya B. Morozova Irina K. Sviridova Valery N. Babin 《应用有机金属化学》2008,22(2):139-147
The toxicity of ferrocenylethyl benzotriazole ( 1 ) and other ferrocene compounds including ferrocenylmethyl benzimidazoles ( 4,5,6,11 ), ferricenium salts ( 3,9,10 ) and ferrocenylmethyl adenine ( 7 ), was studied. All ferrocene complexes under investigation showed low or medium toxicities. On the basis of an earlier model of chemical carcinogenesis, the antitumor activity of ferrocenylalkyl azoles 1, 8 and ferricenium salts 9, 10 was studied in vivo in the so‐called sub‐capsular test on human tumors. This effectiveness was compared with that of cisplatin. A series of ferrocenylalkyl azoles were synthesized by interacting azoles either with α‐hydroxyalkyl ferrocenes FcC(OH)R1R2 in organic solvent in the presence of aqueous HBF4 in quantitative yields or with trimethyl(aminomethyl)ferrocene iodide in an aqueous‐basic medium in good yields. The X‐ray determinations of molecular and crystal structures of α‐(1‐benzotriazolyl)ethylferrocene ( 1 ) and α‐(1‐naphthatriazolyl)ethylferrocene ( 12 ) were performed. Copyright © 2008 John Wiley & Sons, Ltd. 相似文献
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Ludmila V. Chepeleva Alexander Yu. Matsakov Zhanna A. Kondratyuk Fedor G. Yaremenko Andrey O. Doroshenko 《Journal of photochemistry and photobiology. A, Chemistry》2010,209(2-3):163-173
Two isomeric pyrazole derivatives of 3-hydroxychromone (3HC) with and without the possibility of the multiple intramolecular hydrogen bonds formation were compared theoretically and experimentally with the aim to find out whether the excited state intramolecular proton transfer (ESIPT) reaction follows the traditional to the most of 3HCs “flavonol-like” direction towards the CO group oxygen or an “alternative” direction towards the heterocyclic nitrogen atom.Quantum-chemical modeling and comparative study of the experimental spectral parameters of the title compounds indicated the preferential realization of “flavonol-like” ESIPT to oxygen channel.The 3HC systems with the “alternative” intramolecular hydrogen bond to nitrogen were characterized as low fluorescent and practically unable to ESIPT with participation of the nitrogen containing heterocyclic unit. 相似文献
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