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231.
I. L. Odinets O. I. Artyushin G. V. Bodrin M. P. Passechnik K. A. Lyssenko I. V. Fedyanin P. V. Petrovskii T. A. Mastryukova 《Russian Chemical Bulletin》2005,54(3):758-769
Reactions of phosphoryl- and thiophosphorylacetonitriles with poly((bromomethyl)arenes containing closely-spaced bromomethyl groups under conditions of phase-transfer catalysis occur as cycloalkylation to form new types of fused systems, in which aromatic rings are annelated with a five-, six-, or seven-membered ring containing the exocyclic phosphorus containing and cyano substituents. The reaction pathway is independent of the reagent ratio. Under the same conditions, the reaction with 1,3,5-tris(bromomethyl)-2,4,6-trimethylbenzene affords products of monoalkylation at all electrophilic groups of the starting substrate. In the resulting compounds, the alkoxy groups at the phosphorus atom are easily transformed into the hydroxy groups via the corresponding silyl ethers to give the corresponding phosphorus acids, whereas the cyano group is chemically inert.__________Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 3, pp. 745-756, March, 2005. 相似文献
232.
Neretin I. S. Lyssenko K. A. Antipin M. Yu. Slovokhotov Yu. L. 《Russian Chemical Bulletin》2002,51(5):754-763
Two solvates of fluorinated derivatives of C60 fullerene were studied by single-crystal X-ray diffraction analysis. The crystals of fluorinated fullerene solvate C60F18·C6H5Me belong to the monoclinic system with the unit cell parameters a = 11.532(2) , b = 21.501(3) , c = 16.261(2) , = 101.798(5)°. The fluorinated fullerene molecule with the approximate symmetry C
3v occupies a general position. The crystals of fluorinated fullerene solvate C60F48·2C6H3Me3 belong to the cubic system (a = 23.138(2) ). The C60F48 molecule occupies the special position with the S
6 symmetry. The experimental molecular geometry agrees with the results of quantum-chemical calculations. 相似文献
233.
D. V. Aleksanyan V. A. Kozlov I. L. Odinets I. V. Fedyanin K. A. Lyssenko M. P. Pasechnik P. V. Petrovsky T. A. Mastryukova 《Russian Chemical Bulletin》2007,56(9):1891-1899
Starting from meta and ortho isomers of (diphenylphosphorylmethyl)anilines 2a,b, procedures were developed for the synthesis of new phosphoryl-substituted Schiff bases 3a,b serving as tridentate ligands. In alcoholic solutions, ligands 3a,b form complexes of different composition with praseodymium and neodymium nitrates. Only the M(L)2(NO3)3 complexes crystallized from solution regardless of the reactant ratio. According to the X-ray diffraction study and IR spectroscopy,
one of the ligands in the complexes with ortho ligand 3b is coordinated in a bidentate fashion via the oxygen atom of the P=O group and the phenoxy oxygen atom, whereas the second ligand molecule forms a coordination bond
with metal only via the phosphoryl oxygen atom. In the Pr(3a)2(NO3)3 complexes, both meta ligands 3a are involved in thebidentate O,O-coordination.
Dedicated to Academician G. A. Abakumov on the occasion of his 70th birthday.
Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 9, pp. 1827–1835, September, 2007. 相似文献
234.
I. M. Aladzheva O. V. Bykhovskaya P. V. Petrovskii K. A. Lyssenko M. Yu. Antipin T. A. Mastryukova 《Russian Chemical Bulletin》2005,54(11):2635-2641
A facile method was developed for the synthesis of N-(3-phosphonopropyl)-substituted α-amino acids and their phosphine oxide analogs based on hydrolysis of 2-oxo-1,2-azaphospholanes
and 1,2-azaphospholanium salts prepared from readily available reagents. A chelate CuII
N-[(3-diphenylphosphoryl)propyl]glycinate was isolated.
Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 11, pp. 2551–2556, November, 2005. 相似文献
235.
A. N. Kravchenko G. A. Gazieva A. S. Sigachev E. Yu. Maksareva K. A. Lyssenko N. N. Makhova 《Russian Chemical Bulletin》2007,56(1):148-153
Two-step α-ureidoalkylation of ureas with various 4,5-dihydroxyimidazolidin-2-ones gave novel 1,3-dialkyl-4,5-bis(3-alkylureido)-,
1,3-dialkyl-4,5-bis[3-(2-pyrimidyl)ureido]-, or 1,3-dialkyl-4,5-bis(3,3-dialkylureido)imidazolidin-2-ones and ensembles of
three imidazolidine rings. The structure of 4,5-bis(2-oxoimidazolidin-1-yl)imidazolidin-2-one was confirmed by X-ray diffraction
data.
Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 1, pp. 140–145, January, 2007. 相似文献
236.
A. S. Morkovnik K. A. Lyssenko T. A. Kuz’menko L. N. Divaeva 《Russian Chemical Bulletin》2006,55(3):492-501
Studies by X-ray diffraction and quantum chemical methods demonstrated that 1,2,4-triazino[2,3-a]benzimidazol-5(4)H-3-ones exist in the condensed state primarily in the 5H-tautomeric form, whereas these compounds exist, most likely, predominantly as 4H tautomers in the gas phase. The low-barrier tautomerism of 1,2,4-triazino[2,3-a]benzimidazol-5(4)H-3-ones occurs through the intermediate formation of hydrogen-bonded cyclic dimers followed by the concerted two-proton transfer.
N-Alkylation of both the electroneutral and N-anionic forms of 2-methyl-1,2,4-triazino[2,3-a]benzimidazol-5(4)H-3-one affords predominantly N(4)-alkyl derivatives.
Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 3, pp. 475–483, March, 2006. 相似文献
237.
N.V. Vasil’ev D.V. Romanov A.A. Bazhenov K.A. Lyssenko G.V. Zatonsky 《Journal of fluorine chemistry》2007,128(7):740-747
Cycloaddition reactions of fluorinated 1,3,4-oxadiazoles with conjugated and unconjugated dienes was studied. The reactions resulted in the formation of products of double cycloaddition (7-oxabicycloheptane type compounds), along with products of intramolecular cycloaddition (oxatricyclic and oxatetracyclic compounds). The structure of 4-(trifluoromethyl)-2-ethoxycarbonyl-1,6-dimethyl-3-oxatricyclo[2.2.1.02,6]heptane was confirmed by single crystal X-ray diffraction analysis. 相似文献
238.
Vera I. Maslennikova Tatyana Yu. Sotova Konstantin A. Lyssenko Sergei O. Adamson Wolf D. Habicher 《Tetrahedron》2007,63(19):4162-4171
The phosphorylation of 2,2′,7,7′-tetrahydroxydinaphthylmethane was studied and the influence of molecule pre-organization on the regioselectivity of functionalization was investigated. The reactions of 2,2′,7,7′-tetrahydroxydinaphthylmethane with phosphorous amides containing 1-3 amide bonds gave oligophosphorylated derivatives differing in the number and the nature of phosphorus fragments and in the size of phosphorus rings: tetraphosphorus macrocycles containing one 24-membered and two eight-membered phosphorus rings, triphosphorus compounds containing a phosphocine ring and two acyclic phosphorus fragments, and tetraphosphorylated derivatives with four phosphorus groups in the molecule. The possibility of controlling the regioselectivity of phosphorylation by using reagents differing in the number and activity of P-N bonds was demonstrated. 相似文献
239.
Amelichev SA Konstantinova LS Lyssenko KA Rakitin OA Rees CW 《Organic & biomolecular chemistry》2005,3(19):3496-3501
Treatment of nucleophilic heterocycles like pyrroles and thiophenes, and their tetrahydro derivatives, with S2Cl2 and DABCO in chloroform at room temperature provides a simple one-pot synthesis of fused mono and bispentathiepins. N-Methylpyrrole and its 2-chloro and 2,5-dichloro derivatives and N-methylpyrrolidine all give the same dichloropentathiepin 1a. N-Ethyl, isopropyl and tert-butylpyrrolidine behave similarly; the isopropylpyrrolidine also gives the bispentathiepin 6which undergoes an intriguing rearrangement to the symmetrical monopentathiepin 1c. N-Methyl and ethyl indole give either 2,3-dichloro derivatives 8 or the pentathiepinoindoles 9, depending upon the reaction conditions. Thiophene and tetrahydrothiophene give the pentathiepin 10. X-Ray crystal structures are provided for the pentathiepins 1a and 1d, and possible reaction pathways are suggested for the extensive cascade reactions reported. 相似文献
240.
Yu. A. Pozdnyakova A. A. Chetverikov K. A. Lyssenko A. S. Peregudov M. I. Buzin E. V. Matukhina O. I. Shchegolikhina 《Russian Chemical Bulletin》2007,56(1):77-82
Hydrolytic condensation of ethyltriethoxysilane in the presence of NaOH (Si: NaOH = 1) gave crystal solvate of sodium cis-tetraethyltetrasiloxanolate {(Na+)4[EtSi(O)O−]4}·nL (1, L = EtOH, H2O) in high yield. The molecular structure of compound 1 at L = EtOH, n = 8 was determined by X-ray diffraction analysis. The reaction of compound 1 with trimethylchlorosilane affords cis-tetra[ethyl(trimethylsiloxy)]cyclotetrasiloxane cis-[EtSi(O)OSiMe3]4, which is the first representative of the group of mesomorphic cyclotetrasiloxanes containing alkyl groups.
Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 1, pp. 74–79, January, 2007. 相似文献