Study of Proton-Deuterium Exchange in Ten-Vertex Boron Hydrides

2007 ◽  
Vol 72 (12) ◽  
pp. 1725-1739 ◽  
Author(s):  
Igor B. Sivaev ◽  
Vikentii I. Bragin ◽  
Alexander V. Prikaznov ◽  
Pavel V. Petrovskii ◽  
Vladimir I. Bregadze ◽  
...  
Keyword(s):  
Alkoxy Group ◽  
Deuterium Exchange ◽  
Apical Position ◽  
Boron Hydrides ◽  
Dihydrogen Bonds ◽  
General Order ◽  
Derivatives Of ◽  
Electron Withdrawing Substituents

The effect of electron-donating and electron-withdrawing substituents on the proton-deuterium exchange in derivatives of the closo-decaborate anion in methanol-d4 was studied. Introduction of the electron-donating hydroxy (alkoxy) group into the apical position of the boron cage strongly promotes the H-D exchange at the antipodal apical vertex, whereas introduction of the electron-withdrawing diazonium group stops the H-D exchange completely. The general order of the proton-deuterium exchange in equatorially-substituted derivatives [2-B10H9R]n- is 10 > 1 >> 7,8 > 4 > 3,5 ≈ 6,9. Formation of dihydrogen bonds between 1- and 2-hydroxy derivatives of the closo-decaborate anion and alcohols was investigated and their possible role in the H-D exchange was discussed.

Chemistry of boron hydrides orchestrated by dihydrogen bonds

2013 ◽  
Vol 747 ◽  
pp. 30-42 ◽  
Author(s):  
Oleg A. Filippov ◽  
Natalia V. Belkova ◽  
Lina M. Epstein ◽  
Elena S. Shubina
Keyword(s):  
Boron Hydrides ◽  
Dihydrogen Bonds

scholarly journals New N-difluoromethylindoles: features of N-difluoromethylation of indoles with electron-donor or electron-withdrawing substituents

2018 ◽  
Vol 6 (1) ◽  
pp. 101-108
Author(s):  
Kirill Petko ◽  
Andrey Filatov
Keyword(s):  
Electron Donor ◽  
Bromine Atom ◽  
Indole Derivatives ◽  
Amino Groups ◽  
Derivatives Of ◽  
Electron Withdrawing Substituents

The study of the difluoromethylation of various indole derivatives containing both electron-donating and electron-withdrawing groups was carried out. N-Difluoromethyl derivatives of indole with methoxy, methyl, nitro, cyano, amino groups and bromine atom were isolated and fully characterized.

Structural characterization of the derivatives of bis{[2,6-(dimethylamino)methyl]phenyl} selenide with palladium(II) and mercury(II)

2020 ◽  
Vol 76 (8) ◽  
pp. 828-835
Author(s):  
Anand Gupta ◽  
Rajesh Deka ◽  
Ray J. Butcher ◽  
Harkesh B. Singh
Keyword(s):  
Structural Characterization ◽  
Palladium Complex ◽  
The Other ◽  
Apical Position ◽  
Mercury Complex ◽  
Formal Charge ◽  
Derivatives Of ◽  
Cl Atom ◽  
Methyl Phenyl

The intramolecularly coordinated homoleptic diorgano selenide bis{2,6-bis[(dimethylamino)methyl]phenyl} selenide, C24H38N4Se or R 2Se, where R is 2,6-(Me2NCH2)2C6H3, 14, was synthesized and its ligation reactions with PdII and HgII precursors were explored. The reaction of 14 with SO2Cl2 and K2PdCl4 resulted in the formation of the meta C—H-activated dipalladated complex {μ-2,2′-bis[(dimethylamino)methyl]-4,4′-bis[(dimethylazaniumyl)methyl]-3,3′-selanediyldiphenyl-κ4 C 1,N 2:C 1′,N 2′}bis[dichloridopalladium(II)], [Pd2Cl4(C24H38N4Se)] or [{R(H)PdCl2}2Se], 15. On the other hand, when ligand 14 was reacted with HgCl2, the reaction afforded a dimercurated selenolate complex, {μ-bis{2,6-bis[(dimethylamino)methyl]benzeneselanolato-κ4 N 2,Se:Se,N 6}-μ-chlorido-bis[chloridomercury(II)], [Hg2(C12H19N2Se)Cl3] or RSeHg2Cl3, 16, where two HgII ions are bridged by selenolate and chloride ligands. In palladium complex 15, there are two molecules located on crystallographic twofold axes and within each molecule the Pd moieties are related by symmetry, but there are still two independent Pd centers. Mercury complex 16 results from the cleavage of one of the Se—C bonds to form a bifurcated SeHg2 moiety with the formal charge on the Se atom being −1. In addition, one of the Cl ligands bridges the two Hg atoms and there are two terminal Hg—Cl bonds. Each Hg atom is in a distorted environment which can be best described as a T-shaped base with the bridging Cl atom in an apical position, with several angles close to 90° and with one angle much larger and closer to 180°.

Optical Properties of Solid Pseudoisocyanine Films Doped with Cluster Derivatives of Boron Hydrides

2004 ◽  
Vol 96 (6) ◽  
pp. 824-833 ◽  
Author(s):  
V. V. Shelkovnikov ◽  
Z. M. Ivanova ◽  
N. A. Orlova ◽  
V. V. Volkov ◽  
M. K. Drozdova ◽  
...  
Keyword(s):  
Optical Properties ◽  
Boron Hydrides ◽  
Derivatives Of

Cyclic oxonium derivatives of polyhedral boron hydrides and their synthetic applications

2008 ◽  
pp. 977 ◽  
Author(s):  
Andrey A. Semioshkin ◽  
Igor B. Sivaev ◽  
Vladimir I. Bregadze
Keyword(s):  
Boron Hydrides ◽  
Oxonium Derivatives ◽  
Derivatives Of

ChemInform Abstract: Chemistry of Boron Hydrides Orchestrated by Dihydrogen Bonds

ChemInform ◽  
2014 ◽  
Vol 45 (5) ◽  
pp. no-no
Author(s):  
Oleg A. Filippov ◽  
Natalia V. Belkova ◽  
Lina M. Epstein ◽  
Elena S. Shubina
Keyword(s):  
Boron Hydrides ◽  
Dihydrogen Bonds
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