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71.
72.
Yu. A. Simonov É. V. Ganin V. E. Zavodnik V. F. Makarov 《Chemistry of Heterocyclic Compounds》1987,23(10):1056-1059
It was demonstrated by x-ray diffraction investigation of the product of the reaction of 1,2-diaminoethane with phthalic acid dichloride that the resulting compound has the 1,2-diisophthalimidoethane structure. An improved method for its synthesis is proposed.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 10, pp. 1320–1323, October, 1987. 相似文献
73.
V. I. Makarov G. I. Skubnevskaya N. M. Bazhin 《Reaction Kinetics and Catalysis Letters》1978,9(2):217-220
The spectrum of an intermediate, ascribed to nitrosopentane, has been detected in the photolysis of SO2-pentane-NO mixtures. This may be explained by a radical photolysis mechanism involving an initial H-atom abstraction from the pentane molecule by SO2.
SO2--NO , . , H .相似文献
74.
F. A. Shmidt N. M. Ryntina V. V. Saraev V. A. Gruznykh V. A. Makarov 《Reaction Kinetics and Catalysis Letters》1976,5(2):101-106
The reaction of tributylphosphine with the catalytic system (C5H5)2 TiCl2–LiC4H9 prepared in an atmosphere of H2 has been investigated in toluene solution. By using the ESR technique, a hydride complex Cp2Ti(H) (PBu3) has been detected. The proportionality between the rate of cyclohexene hydrogenation and the complex concentration has been established. The kinetics of cyclohexene hydrogenation has been investigated and a reaction mechanism is proposed.
Cp2TiCl2–LiC4H9 (Cp–C5H5), H2, Cp2Ti(H) (PBu3). Ti (III). .相似文献
75.
Nikolai V Ignat’ev Michael SchmidtUdo Heider Andriy KucherinaPeter Sartori Fatiah M Helmy 《Journal of fluorine chemistry》2002,113(2):201-205
The electrochemical fluorination (ECF) of N,N-dimethylperfluoroacylamides gives the corresponding perfluoro-N,N-dimethylacylamides in low yield. With increase of the number of carbon atoms in the perfluoroacyl radical the yield of the required perfluoro-N,N-dimethylacylamides is slightly increased. 相似文献
76.
Hattori S Ohkubo K Urano Y Sunahara H Nagano T Wada Y Tkachenko NV Lemmetyinen H Fukuzumi S 《The journal of physical chemistry. B》2005,109(32):15368-15375
Boron dipyrromethene (BODIPY), which is commonly used as an energy absorbing and transferring antenna molecule, has been modified to contain an electron donor moiety, 8-(2,4,5-trimethoxyphenyl)-4,4-difluoro-1,3,5,7-tetramethyl-4-bora-3a,4a-diaza-s-indacene (MEOPHBDP). The photoinduced electron transfer from a 2,4,5-trimethoxyphenyl moiety to a BODIPY moiety of MEOPHBDP in acetonitrile was observed by femtosecond laser flash photolysis measurements. The lifetime of the charge-separated state of MEOPHBDP was 59 ps at 298 K. The dye-sensitized solar cells (DSSC) were prepared using MEOPHBDP with carboxylic acid (MEOPHBDP-COOH) and a reference BODIPY dye having no electron donor moiety. The photovoltaic measurements were performed using a standard two-electrode system consisting of a working electrode and a Pt sputtered electrode in methoxyacetonitrile containing 0.5 M iodide and 0.05 M I(2). The photoelectrochemical properties of DSSC with MEOPHBDP are compared with those with a reference BODIPY dye. 相似文献
77.
Exact difference scheme operators are used to construct a difference scheme for a second-order elliptical equation with discontinuous coefficients. The solution of the scheme converges to the solution of the original problem at a rate O(h1/2) in the grid norm W2
1().Translated from Vychislitel'naya i Prikladnaya Matematika, No. 56, pp. 3–7, 1985 相似文献
78.
Nikolai N. Nikolaev Vladimir R. Zoller 《Zeitschrift fur Physik C Particles and Fields》1992,56(4):623-628
One expects a similarity of the energy dependence of the difference
tot(*p)–
tot(*n) for virtual (deep inelastic scatteringQ
2m
2) and real (Q
2=0) photons. Previous analysis of D structure functions with allowence for nuclear shadowing (NS) in the deuteron has led to conclusion that
tot(*p)–
tot(*n)<0>0>x<0.015. the=" early=" evidence=" from=" the=" real=" photoproduction=" data=">0.015.>
tot(p)–
tot(n)<0. we=" critically=" reexamine=" determinations=" of=" the=">0.>
tot(p)–
tot(n), using more accurate calculations of NS correction to
tot(D), and discuss a possibility of
tot(n)
tot(p) at moderately high energies. 相似文献
79.
Interactions of zero radius with an additional inner channel are considered. The corresponding generalized Krein resolvents in a functional sector are approximated in the weak sense with the aid of interactions of rank 1. The cut-off procedure of the interaction is explicitly described in prepresentation.Translated from Zapiski Nauchnykh Seminarov Leningradskogo Otdeleniya Matematicheskogo Instituta im. V. A. Steklova Akademii Nauk SSSR, Vol. 182, pp. 113–122, 1990. 相似文献
80.
V. I. Makarov N. L. Lavrik G. I. Skubnevskaya N. M. Bazhin 《Reaction Kinetics and Catalysis Letters》1979,12(3):225-227
Sulfur dioxide fluorescence and phosphorescence are quenched by a magnetic field. A model is suggested for the qualitative interpretation of the results.
. , - .相似文献