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排序方式: 共有148条查询结果,搜索用时 248 毫秒
91.
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93.
Shapovalov S. S. Tikhonova O. G. Pasynskii A. A. Skabitskii I. V. Sakharov S. G. 《Russian Journal of Coordination Chemistry》2018,44(12):709-715
Russian Journal of Coordination Chemistry - The reaction of (p-cymene)Ru(Me2Im)Cl2 with excess Me2ImCO2 in acetonitrile in the presence of NH4PF6 afforded the amino complex... 相似文献
94.
Y. V. Torubaev A. V. Pavlova A. A. Pasynskii 《Russian Journal of Coordination Chemistry》2012,38(3):219-223
The oxidation of [CpFe(CO)2]2 by RTeBr3 allowed the corresponding organotellurodibromide complexes CpFe(CO)2TeBr2R (R=Ph, cyclo-(C8H12)(OMe). Their structural features (as determined by single-crystal X-ray diffraction analysis) are discussed. 相似文献
95.
A. I. Blokhin A. A. Pasynskii Yu. V. Torubaev M. Scheer 《Russian Journal of Coordination Chemistry》2010,36(4):284-288
The heating of the ionic complex [CpMn(CO)2(NO)]+SnCl3-(I) in methylene chloride gives a neutral complex CpMn(CO)(NO)SnCl3 (II). The latter reacts with lithium phenylacetylenide to yield a complex CpMn(CO)(NO)Sn(C≡CPh)3 (III). According to the X-ray diffraction data, complexes II and III contain shortened Mn-Sn bonds (2.5178(5) and 2.5436(12) Å, respectively). 相似文献
96.
A. A. Pasynskii S. S. Shapovalov A. V. Gordienko I. V. Skabitskii 《Russian Journal of Coordination Chemistry》2011,37(2):127-132
Reactions of cymantrenecarboxylic acid (CO)3MnC5H4COOH (CymCOOH) with Ni(II) and Co(II) pivalates in boiling THF followed by extraction of the products with diethyl ether or benzene and treatment with triphenylphosphine gave the binuclear complexes LM(CymCOO)4ML (M = Ni (I) and Co (II); L = PPh3). Treatment of the benzene extract of the intermediate cobalt cymantrenecarboxylate with 2,6-lutidine (L’) yielded the trinuclear complex L’Co(CymCOO)3Co(CymCOO)3CoL’ (III). Complex I is antiferromagnetic; μeff decreases from 3.7 to 0.9 μB in a temperature range from 300 to 2 K. Structures I-III were identified using X-ray diffraction. The frameworks of complexes I and II are like Chinese lanterns, having four carboxylate bridges and axial ligands L (Ni-P, 2.358(1) Å; Co-P, 2.412(2) Å). The metal atoms are not bonded to each other (Ni…Ni, 2.7583(9) Å; Co…Co, 2808 (2) Å). In complex III, either terminal Co atom is coordinated to one ligand L’ (Co-N, 2.059(2) Å). The Co atoms form a linear chain showing no M-M bonds (Co…Co, 3.346(1) Å), in which either terminal Co atom is linked with the central Co atom by three carboxylate bridges (on average, Cocentr-O, 2.164 Å; COterm-O, 2.094 Å). In one of three carboxylate groups, only one carboxylate O atom serves as a bridge, while the other is bonded to the terminal Co atom only (Coterm-O, 2.094 and 2.389 Å); so this carboxylate group is a bridging and chelating ligand. 相似文献
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99.
Sergey G. Sakharov Ivan V. Skabitsky Alexander A. Pasynskii 《Journal of organometallic chemistry》2011,696(19):3062-3067
The structure and dynamic behavior of complex [(η5-C5H4CH3)Cr(CO)2(μ-SBu)Pt(PPh3)2] in solution was studied by multinuclear (1H, 13C, 31P) NMR spectroscopy including a phase-sensitive NOESY experiment. Increasing temperature causes rupture of the Cr-Pt bond in the three-membered ring of the complex and rotation of the S-Pt(PPh3)2 unit around the Cr-S bond line, followed by formation of a new Cr-Pt bond to close the ring. All activation parameters for this dynamic process have been determined. 相似文献
100.
M.K. Islam S. Biswas N.A. Chowdhury A. Mannan M. Salahuddin AA Mamun 《等离子体物理论文集》2022,62(1):e202100073
A theoretical investigation has been carried out on the propagation of non-linear ion-acoustic shock waves (IASHWs) in a magnetized degenerate quantum plasma system composed of inertial non-relativistic positively charged light and heavy ions, inertialess non-relativistically or ultra-relativistically degenerate electrons and positrons. The reductive perturbation method has been employed to derive the Burgers' equation. It has been observed that under consideration, our plasma model supports only positive potential shock structure. It is also found that the amplitude and steepness of the IASHWs have been significantly modified by the variation of ion kinematic viscosity, oblique angle, number density, and charge state of the plasma species. The results of our present investigation will be helpful for understanding the propagation of IASHWs in white dwarfs and neutron stars. 相似文献