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1.
Raspertova I. V. Domasevich K. V. Lampeka R. D. 《Russian Journal of General Chemistry》2002,72(11):1750-1753
2,4-Dihydroxybenzylidene(methyl)amine and 5-bromo-2-hydroxybenzylidene(methyl)amine N-oxides were synthesized by condensation of N-methylhydroxylamine with the corresponding aldehydes. Their crystal structures were solved by X-ray analysis. 相似文献
2.
A study of the kinetics of the oxidation by peroxodisulfate of macrocyclic complexes of nickel(II) with a pH-regulatable position of the thermodynamic equilibrium between the tetra- and hexacoordinated forms showed that the square-planar form is substantially more reactive than the hexacoordinated form. The observed effect may be a consequence of different mechanisms of the redox processes: intraspheral in the first case and extraspheral in the second.Translated from Teoreticheskaya i Éksperimental'naya Khimiya, Vol. 28, Nos. 5–6, pp. 442–447, September–December, 1992. 相似文献
3.
Lampeka Ya. D. Manorik P. A. Pogorelaya L. M. Prikhod'ko A. I. 《Theoretical and Experimental Chemistry》2002,38(5):342-346
The interaction of mono- and oligomacromolecular complexes of copper(II) and nickel(II) with water vapor has been studied on a piezoquartz microbalance. It has been established that the effectiveness of adsorption is determined by the nature of the metal ion to a larger extent than the quantity of macrocyclic ligand in the receptor molecule. Oligomacrocyclic complexes of copper(II) are shown to have prospects for use as active coverings of moisture meters working over a wide range of relative humidity. 相似文献
4.
The characteristics of intra- and intermolecular electronic processes in crystalline dibenzotetraazaannulene were established based on an analysis of the electronic absorption spectra of thin films. It was shown that the specific spectral characteristics of this substance are due to its stack structure in the solid state.L V. Pisarzhevskii Institute of Physical Chemistry, National Academy of Sciences of Ukraine, 252039 Kiev, Prosp. Nauki, 31. Translated from Teoreticheskaya i Eksperimental'naya Khimiya, Vol. 32, No. 1, pp. 20–23, January–February, 1996. Original article submitted May 19, 1995. 相似文献
5.
S. V. Rosokha Ya. D. Lampeka L. N. Zakrevskaya 《Theoretical and Experimental Chemistry》1991,27(1):49-52
A spectrophotometric method has been used to study in sulfuric acid solutions the chelate reduction of nickel(III) compounds NiIIIL, where L are l4-membered tetraazamacrocyclic ligands with a different number of substitutents (from 0 to 0) and double bonds (from U to 4). Based on the comparison of the kinetic characteristics of the redox reactions of the nickel complexes with data on the participation of such compounds in oscillating chemical reactions in the systems NiLBrO–
3-H2SO4 it was concluded that a necessary condition for the creation of OCR in this case is, besides the autocatalytic regime of the oxidation of the [NiL]2+ complex with bromate, the ability of nickel(III) to undergo rapid reduction (k > 10–4 sec–1) by the oxidation of the coordinated macrocyclic ligand.L. V. Pisarzhevskii Institute of Physical Chemistry, Academy of Sciences of Ukrainian SSR, Kiev. Translated from Teoretichesakaya i ÉksperimentaI'naya Khimiya, Vol. 27, No. l pp. 51–55, January–February, 1991. Original article submitted May 29, 1990. 相似文献
6.
It was found that a binuclear complex of nickel(II), unlike its mononuclear analog, undergoes reversible dehydration/hydration in the solid state accompanied by a change in color. The probable cause of this is breaking/formation of a specific network of hydrogen bonds in the crystal lattice of the binuclear compound.Translated from Teoreticheskaya i éksperimental'naya Khimiya, Vol. 31, No. 2, pp. 110–113, March–April, 1995.The authors are grateful to N. I. Yashin for carrying out the thermoanalytical measurements.This work is part of the program of the International Science Fund (Grant UBG 000) and was also financially supported by the State Fund for Fundamental Research of the Ukrainian State Committee on Science and Technology (Project 3.3/52). 相似文献
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9.
Atanasov M Comba P Lampeka YD Linti G Malcherek T Miletich R Prikhod'ko AI Pritzkow H 《Chemistry (Weinheim an der Bergstrasse, Germany)》2006,12(3):737-748
The reaction of [M(CN)(6)](3-) (M = Cr(3+), Mn(3+), Fe(3+), Co(3+)) and [M(CN)(8)](4-/3-) (M = Mo(4+/5+), W(4+/5+)) with the trinuclear copper(II) complex of 1,3,5-triazine-2,4,6-triyltris[3-(1,3,5,8,12-pentaazacyclotetradecane)] ([Cu(3)(L)](6+)) leads to partially encapsulated cyanometalates. With hexacyanometalate(III) complexes, [Cu(3)(L)](6+) forms the isostructural host-guest complexes [[[Cu(3)(L)(OH(2))(2)][M(CN)(6)](2)][M(CN)(6)]][M(CN)(6)]30 H(2)O with one bridging, two partially encapsulated, and one isolated [M(CN)(6)](3-) unit. The octacyanometalates of Mo(4+/5+) and W(4+/5+) are encapsulated by two tris-macrocyclic host units. Due to the stability of the +IV oxidation state of Mo and W, only assemblies with [M(CN)(8)](4-) were obtained. The Mo(4+) and W(4+) complexes were crystallized in two different structural forms: [[Cu(3)(L)(OH(2))](2)[Mo(CN)(8)]](NO(3))(8)15 H(2)O with a structural motif that involves isolated spherical [[Cu(3)(L)(OH(2))](2)[M(CN)(8)]](8+) ions and a "string-of-pearls" type of structure [[[Cu(3)(L)](2)[M(CN)(8)]][M(CN)(8)]](NO(3))(4) 20 H(2)O, with [M(CN)(8)](4-) ions that bridge the encapsulated octacyanometalates in a two-dimensional network. The magnetic exchange coupling between the various paramagnetic centers is characterized by temperature-dependent magnetic susceptibility and field-dependent magnetization data. Exchange between the CuCu pairs in the [Cu(3)(L)](6+) "ligand" is weakly antiferromagnetic. Ferromagnetic interactions are observed in the cyanometalate assemblies with Cr(3+), exchange coupling of Mn(3+) and Fe(3+) is very small, and the octacoordinate Mo(4+) and W(4+) systems have a closed-shell ground state. 相似文献
10.
On the basis of spectrophotometric measurements, constants have been determined for adduct formation between bis-macrocyclic
complexes of copper(II) and aliphatic diamines. For these systems, the influence of reactant structure on the specific features
of complexation has been established.
L. V. Pisarzhevskii Institute of Physical Chemistry, National Academy of Sciences of the Ukraine, 31 Nauka Prospect, Kiev
252039, Ukraine. Translated from Teoreticheskaya i éksperimental’naya Khimiya, Vol. 33, No. 2, pp. 83–87, March–April, 1997. 相似文献