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101.
The concepts of dilation and rotation operators are introduced for maps of domains of infinite-dimensional Hibert spaces. Sufficient conditions for -differentiability along subspaces are established and theorems on operator conditions for IR-differentiable maps to be monogenic and holomorphic are proved.Translated from Ukrainskii Matematicheskii Zhurnal,42, No. 11, pp. 1448–1454, November, 1990. 相似文献
102.
Representation of the local general solution of a certain class of differential-functional equations
E. Yu. Romanenko 《Ukrainian Mathematical Journal》1990,42(2):182-186
For the differential-functional equation of neutral type x(a t)+tb(t)x(t)+ c(t)x(at)+d(t)x(t)=0,0<<1,a>1, in the neighborhood of the singular critical point t=0, the representation of the general solution is constructed; it is shown that the general solution depends on an arbitrary constant and an arbitrary periodic function.Translated from Ukrainskii Matematicheskii Zhurnal, Vol. 42, No. 2, pp. 206–210, February, 1990. 相似文献
103.
The semiempirical MNDO-PM3 method in supramolecular approximation was used to study the structure of (N--haloethylimino)chloro(o-phenylenedioxy)phosphoranes R1
3CR2X-N-P(Cl)O2C6H2(R3-m)2, where R1 = H, Cl, F, R2 = R3 = H, Cl, and X = F, Cl, Br, and of their 1:2 solvates with chloroform, as well as alternative mechanisms of the P(IV)-P(V) holotropic rearrangement. It was found that the activation barrier of the sigmatropic rearrangement increases in the order Br < Cl < F, in parallel with increasing thermodynamic stability of a more stable phosphorane isomer with an axial-equatorial arrangement of the dioxaphos- phole ring. It was shown that the most favorable pathway of the phosphorus-carbon halotropic rearrangement of a phosphorus N--haloethylimine, both nonsolvated and solvated with two molecules of chloroform, is the sigmatropic transformation. 相似文献
104.
The stereochemically flexible Cu(hfac)(2) metal-ligand system when combined with polyfunctional nitroxides leads to a variety of solids with varying structure and composition. While investigating the products of Cu(hfac)(2) interaction with spin-labeled pyrazole 4,4,5,5-tetramethyl-2-(1-methyl-1H-pyrazol-4-yl)-imidazoline-3-oxide-1-oxyl, we have isolated a family of (12) heterospin compounds differing in structure and composition in the solid state. In synthetic systems, these compounds often cocrystallize and must be separated mechanically. It is also shown that minor variation of the structure of the solid heterospin complex can substantially change the magnetic properties of compounds. 相似文献
105.
G. V. Romanenko V. I. Ovcharenko N. V. Podberezskaya 《Journal of Structural Chemistry》1992,33(2):261-267
Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences. Translated from Zhurnal Strukturnoi Khimii, Vol. 33, No. 2, pp. 118–125, March–April, 1992. 相似文献
106.
Sergei F. Vasilevsky Elena V. Mshvidobadze Galina V. Romanenko 《Tetrahedron letters》2005,46(26):4457-4459
The simple reaction of cyclization of hydrazides of vic-acetylenylbenzoic and acetylenylpyrazole carboxylic acid can lead to four different compounds: five-membered N-aminolactams, six-membered N-aminolactams, six-membered diazinones and diazepinones, but only the first three have been described. In this paper we report the unexpected formation of a bis(pyrazolo[4,3-d][1,2]diazepinone, the structure of which has been established by X-ray crystallography. 相似文献
107.
A. G. Stromberg E. V. Selivanova S. V. Romanenko 《Journal of Analytical Chemistry》2004,59(8):742-748
To simulate peak-shaped analytical signals, the shape characteristics and geometrical properties of four asymmetric basic functions (the derivative of the logistic function, the Gaussian function, the Cauchy function modified by Fraser and Suzuki, and the Poisson function with the Stromberg correction) are systematically studied. The frame representation, which was proposed earlier by the two authors of this paper, is used to characterize the peak shape. Some regularities are found in peak properties expressed in terms of the frame parameters and considered as functions of the coefficient of skewness b. Peak shapes are compared using two approaches to obtaining dimensionless frame parameters: one using relative parameters and another using parameters of the unit frame. It is shown that the frame representation of the peak shape can be used in the phenomenological simulation of metal peaks in stripping voltammetry. The practical use of information on the shape of the analytical signal in the solution of various problems of analytical chemistry is discussed. 相似文献
108.
T. E. Glotova A. S. Nakhmanovich L. S. Romanenko M. V. Sigalov 《Chemistry of Heterocyclic Compounds》1991,27(7):795-798
1,2,4-Triazolo[3,4-b]-1,3,4-thiadiazepines have been prepared by treating -acetylenic ketones with 4-amino-3-mercapto-1,2,4-triazole in glacial acetic acid. Terminal acetylenic ketones react with the triazole to form 4-amino-3-acylvinylthio-1,2,4-triazoles. Heating the latter with hydrazine hydrate in alcohol yields substituted pyrazoles.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 7, pp. 990–994, July, 1991. 相似文献
109.
110.
L. I. Kryvenko S. A. Soldatova O. V. Zvolinskii É. É. Romanenko M. I. Struchkova A. T. Soldatenkov 《Chemistry of Heterocyclic Compounds》1997,33(8):933-936
Condensation of 4-(-dimethylaminopropionyl)paracyclophane with aliphatic aldehydes or cyclohexanones in the presence of hydroxylamine gave 2-([2.2]paracyclophan-4-yl)pyridines and-5,6,7,8-tetrahydroquinolines respectively. Reaction of these salts with -naphthylamine gives a mixture of paracyclophanyl substituted 1,2,3,4-tetrahydrobeno[h]quinoline and benzo[h]quinoline.For Communication 6, see [1].Russian University of National Friendship, Moscow 117198. Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 8, pp. 1069–1073, August, 1997. 相似文献