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Kudinov A. R. Perekalin D. S. Petrovskii P. V. Grintselev-Knyazev G. V. 《Russian Chemical Bulletin》2002,51(10):1928-1930
The ruthenium arene complexes [(-arene)Ru(-9-SMe2-7,8-C2B9H10)]+ (arene = C6H6 (3a); arene = 1,3,5-C6H3Me3 (3b)) with the monoanionic carborane ligand were synthesized by the reactions of the [9-SMe2-7,8-C2B9H10]– anion with [(-arene)RuCl2]2. The structure of the compound [3a]BPh4 was established by single-crystal X-ray diffraction analysis. 相似文献
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The reaction of Na[9-SMe2-7,8-C2B9H10] with [(Cod)IrCl]2 (Cod is cycloocta-1,5-diene) gave rise to the iridium complex (-9-SMe2-7,8-C2B9H10)Ir(Cod). Treatment of the latter with anhydrous acids HX (X = Cl, Br, or I) afforded the corresponding iridacarborane halide complexes [(-9-SMe2-7,8-C2B9H10)IrX2]2 analogous to the cyclopentadienyl complexes [(C5Me5)IrX2]2. 相似文献
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D. A. Loginov M. M. Vinogradov Z. A. Starikova A. R. Kudinov 《Russian Chemical Bulletin》2013,62(5):1262-1267
Visible light irradiation of the dicarbollide complex [(η-9-SMe2-7,8-C2B9H10)Fe(η-C6H6)]+ (2a) in the presence of the benzene derivatives in CH2Cl2/MeNO2 resulted in cations [(η-9-SMe2-7,8-C2B9H10)Fe(η-C6R6)]+ (2b-g; arene is anisole (b), toluene (c), m-xylene (d), mesitylene (e), durene (f), and hexamethylbenzene (g)) due to the arene exchange. The structures of [2g]PF6 and related tricarbollide complex [(η-1-ButNH-1,7,9-C3B8H10)Fe-(η-C6H6)]PF6 (1) were confirmed by X-ray diffraction analysis. The nature of bonding in cations 1, 2a, and [CpFe(η-C6H6)]+ was analyzed by an energy decomposition analysis. 相似文献
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A. R. Kudinov V. I. Meshcheryakov P. V. Petrovskii M. I. Rybinskaya 《Russian Chemical Bulletin》1999,48(9):1794-1795
The reactions of the complex (η-9-Me2S-7,8-C2B9H10)Rh(η-cod) (cod is 1,5-cyclo-octadiene) with HX acids (X=Cl, Br, or I) in acetone afforded rhodacarborane halide complexes
[(η-9-Me2S-7,8-C2B9H10)RhX2]2, which are carborane analogs of cyclopentadienyl halide rhodium complexes [(η-C5R5)RhX2]2.
Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 9, pp. 1817–1819, September, 1999. 相似文献
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Timofeev S. V. Lobanova I. A. Petrovskii P. V. Starikova Z. A. Bregadze V. I. 《Russian Chemical Bulletin》2001,50(11):2245-2247
The reaction of bromine with exo-nido-ruthenacarborane [Cl(Ph3P)2Ru]-5,6,10-(-H)3-10-H-7,8-C2B9H8 (1) led to the replacement of the chlorine atom by the bromine atom in the octahedral environment of the ruthenium atom rather than to the substitution in the carborane cage. The structure of [Br(Ph3P)2Ru]-5,6,10-(-H)3-10-H-7,8-C2B9H8 was established by NMR and IR spectroscopy and X-ray diffraction analysis. 相似文献
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遗传信息的完整性不断受氧化基因的威胁,7,8-二氢-8-氧鸟嘌呤(8-oxo-G)是氧化DNA损伤最常见的产物. 氧化碱基会引起基因突变、癌变及衰老等. 应用量子化学方法分析得出:鸟嘌呤(G)被氧化为8-oxo-G后,其电荷分布、氢键的供体和受体位点的数目和位置随之改变,N7和O6原子所带的电荷变得更负,使得它们作为氢键供体的能力增强. 从而G被误认为其他碱基,与正常碱基形成多种氢键复合物. 可将8-oxo-G划分为3个作用位点与正常碱基相互作用. 与正常的单体相比,碱基对中形成氢键的受体原子上所带电荷平均变负0.05e,占原电荷的8%; 供体H原子所带电荷平均变正0.02e,占原电荷的4%. 1位点与正常碱基作用形成的氢键复合物更稳定,2位点和3位点性质相似,水溶剂使碱基对的结合能力减弱,其中与C作用形成氢键复合物的结合能减弱程度最大,且使碱基对结合能力的次序改变. 在8-oxo-G导致的GC→TA突变中,亲核反应位点从G所在链转到A(C)所在链,影响酶对碱基的识别,从而产生基因突变. 相似文献
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《Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy》1994,50(8-9):1397-1412
High resolution IR spectra of the overtones and the combination band of the ν4 and ν6 modes of formaldehyde (2ν4, ν4 + ν6 and 2ν6) were measured in the region of 2200–2650 cm−1 using FTIR. The combination band ν4 + ν6, whose dipole transition is forbidden from molecular symmetry, was observed due to the intensity borrowed from the other bands. The observed frequencies were analysed by a Hamiltonian in which A-type Coriolis interactions and Darling—Dennison interaction were taken into account. The ratio and the relative signs of the transition dipole moments of the overtone bands, μ2ν4 and μ2ν6, have been determined by analysing the intensity distribution of the vibration—rotation lines. 相似文献
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芴酮骨架的构建对于相关天然产物合成、药物分子结构修饰以及光电材料开发等具有重要意义。以苯环作为桥连基团,将呋喃环及炔酮片段构建在同一个分子内,设计并合成了邻呋喃芳基炔酮底物(1a)。利用化合物1a分子内呋喃环与炔键的D-A反应,在酸性条件下环氧开环,进而芳构化,一锅法合成了2-羟基-9-芴酮衍生物2a~2e,收率89%~96%,其结构经1H NMR,13C NMR和HR-MS(ESI)表征。其中,化合物2a结构由X-ray单晶衍射确定。2a(CCDC:2144829)属单斜晶系,空间群P21/c,晶胞参数a=3.9458(10)?,b=22.4460(7)?,c=14.7092(5)?,V=1294.1300(7)?3,Dc=1.3980 Mg/m3,Z=4,F(000)=568。 相似文献
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A. R. Kudinov M. I. Rybinskaya D. S. Perekalin V. I. Meshcheryakov Yu. A. Zhuravlev P. V. Petrovskii A. A. Korlyukov D. G. Golovanov K. A. Lyssenko 《Russian Chemical Bulletin》2004,53(9):1958-1962
The structures of the metallacarborane cations [(-9-Me2S-7,8-C2B9H10)Ni(-Cp)Ni(-9-Me2S-7,8-C2B9H10)]+ (2) and [Cp*Ru(Me2S-C2B9H10)RuCp*]+ (4b) were established by X-ray diffraction analysis. These results confirmed the triple-decker structure proposed for complex 2 earlier, whereas complex 4b proved to be 13-vertex dimetallacarborane rather than the triple-decker complex, as has been suggested earlier.Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 9, pp. 1879–1883, September, 2004. 相似文献
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