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排序方式: 共有56条查询结果,搜索用时 15 毫秒
1.
V. G. Lakhtin V. L. Ryabkov A. V. Kisin V. M. Nosova M. V. Polyakova E. A. Chernyshev 《Russian Chemical Bulletin》1995,44(11):2163-2167
Liquid-phase chlorination of a number of chloro(chlorovinyl)methylsilanes was investigated. A number of novelC-chlorosilanes were characterized by IR and1H NMR spectra. Some regularities of these reactions were determined; correlations between the structure of chloro(chlorovinyl)methylsilanes and their reactivities were identified.Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 11, pp. 2256–2260, November, 1995. 相似文献
2.
V. N. Bochkarev A. V. Kisin V. G. Osipov N. P. Telegina N. G. Komalenkova A. N. Polivanov E. A. Chernyshev 《Chemistry of Heterocyclic Compounds》1978,14(1):17-18
Workup of the mixture of products of pyrolysis of cyclotetrasiloxane (Me2SiO)2(MePhSiO)2 yielded 1,3- (I) and 1,5-(o-phenylene)cyclosiloxane (II), the structures of which were established on the basis of data from their IR, PMR, and mass spectra.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 1, pp. 24–25, January, 1978. 相似文献
3.
A. Z. Voskoboinikov E. B. Chuklanova A. I. Gusev A. V. Kisin I. P. Beletskaya 《Russian Chemical Bulletin》1993,42(3):547-551
The cluster [Na(DME)3]2[W3(CO)14] (1) was prepared by treating CpLuCl2 with an equimolar mixture of Na2W(CO)5 and Na2W2(CO)10 in DME and characterized by X-ray analysis (MoK
radiation, 653 reflections,R = 0.125). The crystals are rhombic,a=18.749(4) Å,b=15.074(3) Å,c=9.505(3) Å,Z = 2, space groupC
mmm. The W-W distance in the W-W-W chain is 2.79 Å. The carbonyl ligands at the tungsten atoms are eclipsed. Compound 1 is the first example of a homometallic carbonyl cluster of an early transition metal. It is suggested that CpLuCl2 interacts with Na2W(CO)5 to afford the highly reactive species CpLu
(CO)5 which further reacts with Na2W2(CO)10 to form1.
Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 3, pp. 582–585, March, 1993. 相似文献
4.
D. A. Rudakov V. L. Shirokii V. I. Potkin E. A. Dikusar V. I. Bragin P. V. Petrovskii I. B. Sivaev V. I. Bregadze A. V. Kisin 《Russian Journal of Electrochemistry》2006,42(3):280-284
By electrochemical iodination of potassium 7-methyl-7,8-dicarba-nido-undecaborate and potassium 7,8-dimethyl-7,8-dicarba-nido-undecaborate, their monoiodine derivatives (extracted as tetramethylammonium salts) are synthesized. Their structure is confirmed by NMR and IR spectra and also by elemental analysis data. 相似文献
5.
Yury Yu. Rusakov Leonid B. Krivdin Valentina M. Nosova Alexander V. Kisin Valentin G. Lakhtin 《Magnetic resonance in chemistry : MRC》2012,50(10):665-671
The calculations of geminal and vicinal 29Si–1H spin–spin coupling constants across double bond in 15 alkenylmethylsilanes and alkenylchlorosilanes were carried out at the second‐order polarization propagator approach level in a good agreement with experiment. Two structural trends, namely, (i) the geometry of the coupling pathway and (ii) the effect of the electrowithdrawing substituent, have been interpreted in terms of the natural J‐coupling analysis within the framework of the natural bond orbital approach. Thus, the marked difference between cisoidal and transoidal 29Si–1H spin–spin coupling constants across double bond was accounted for the delocalization contributions including bonding and antibonding Si–C and C–H orbitals, whereas the chlorine effect was explained in terms of the steric contributions including bonding Si–Cl orbitals. Copyright © 2012 John Wiley & Sons, Ltd. 相似文献
6.
7.
Lakhtin V. G. Nosova V. M. Kisin A. V. Ivanov P. V. Chernyshev E. A. 《Russian Journal of General Chemistry》2001,71(8):1252-1254
Reactions of a series of 1,2-bis(methylchlorosilyl)ethylenes and -acetylenes MenCl3
-
nSi-Z-SiCl3
-
nMen (Z = CH = CH, CC; n = 0-2) with ethanol and acetoxime were studied. Novel alkoxy- and isopropylideneaminooxysilanes were obtained and characterized. A relation was found between the activity of Si-Cl bonds in the reactions studied and the structure of the carbon-carbon bridge. 相似文献
8.
The deposition of tin oxide films by reactive sputtering of a stoichiometric target is investigated. Conditions are determined
for the formation of a crystal layer structure and the acquisition of gas sensitivity without subsequent high-temperature
annealing.
Zh. Tekh. Fiz. 69, 112–113 (April 1999) 相似文献
9.
10.
M. E. Khlupova I. S. Vasil’eva G. P. Shumakovich O. V. Morozova E. A. Zaitseva V. A. Chertkov A. K. Shestakova A. V. Kisin A. I. Yaropolov 《Moscow University Chemistry Bulletin》2018,73(5):237-243
Multicopper oxidases such as bilirubin oxidase (BOD) from Myrothecium verrucaria and laccase (LC) from the basidial fungus Trametes hirsuta have been used as catalysts in dihydroquercetin (DHQ) oxidative polymerization. The conditions selected enabled good yields of DHQ oligomers, which were then analyzed using UV-vis, FTIR, 1Н and 13С NMR spectroscopy. DHQ oligomers synthesized using both enzymes showed higher thermostability as compared with the monomer. Depending on the oxidase, the products of DHQ polymerization differed in physicochemical properties, and as shown by NMR studies, had different structures. 相似文献