Igor T. Chizhevsky

A. N. Nesmeyanov Institute of Organoelement Compounds

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Trends

Author Order

Document Type

Co-Authors

F.M. Dolgushin

NS Kurnakova Institute of General and Inorganic Chemistry

Alexander F. Smol’yakov

A. N. Nesmeyanov Institute of Organoelement Compounds

Ivan A. Godovikov

A. N. Nesmeyanov Institute of Organoelement Compounds

E. V. Balagurova

A. N. Nesmeyanov Institute of Organoelement Compounds

I. V. Pisareva

A. N. Nesmeyanov Institute of Organoelement Compounds

Dmitrii I. D’yachihin

A. N. Nesmeyanov Institute of Organoelement Compounds

Ivan D. Grishin

N. I. Lobachevsky State University of Nizhny Novgorod

Dmitry F. Grishin

N. I. Lobachevsky State University of Nizhny Novgorod

P. V. Petrovskii

A. N. Nesmeyanov Institute of Organoelement Compounds

Vitalii E. Konoplev

Russian State Agrarian University - Moscow Timiryazev Agricultural Academy

Cooperative Institutions

A. N. Nesmeyanov Institute of Organoelement Compounds

Russian Academy of Sciences

Lomonosov Moscow State University

N.D. Zelinsky Institute of Organic Chemistry

University of Liège

University of California, Los Angeles

Czech Academy of Sciences, Institute of Inorganic Chemistry

Centre National de la Recherche Scientifique

Institut de Ciència de Materials de Barcelona

Czech Academy of Sciences

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Field

CCDC 1549761: Experimental Crystal Structure Determination

The Cambridge Structural Database (2017)

E. V. Balagurova Anastasia I. Silivonenko Alexander Yu. Kostyukovich Dmitrii I. D’yachihin Alexander F. Smol’yakov

An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.

10.5517/ccdc.csd.cc1p0n9n

Cite

Citations (0)

CCDC 1971546: Experimental Crystal Structure Determination

The Cambridge Structural Database (2020)

E. V. Balagurova F.M. Dolgushin Michael G. Medvedev Elena G. Kononova Ivan A. Godovikov

10.5517/ccdc.csd.cc245k85

Cite

Citations (0)

New Acyclic (π-Allyl)-closo-rhodacarboranes with an Agostic CH₃···Rh Bonding Interaction That Operate as Unmodified Rhodium-Based Catalysts for Alkene Hydroformylation

Organometallics (2012)

Konstantin I. Galkin Sergey E. Lubimov Ivan A. Godovikov F.M. Dolgushin Alexander F. Smol’yakov

A series of new agostic (CH3···Rh) (π-allyl)-closo-rhodacarboranes (π-allyl = 1,1-dimethylallyl, 1,2-dimethylallyl, 1,1,2-trimethylallyl, 1,2,3-trimethylallyl), stable in the solid state, have been synthesized via one-pot reactions between the K+ salts of the [7-R-8-R′-7,8-nido-C2B9H10]− monoanions (1a, R = R′ = Me; 1b, R,R′ = μ-(o-xylylene); 1c, R,R′ = μ-(CH2)3) and the di-μ-chloro cyclooctene rhodium dimer [(η2-C8H14)4Rh2(μ-Cl)2] (2) in the presence of a 3-fold excess of the conjugated 1,3-dienes 2-methylbuta-1,3-diene (isoprene, 3), 2,3-dimethylbuta-1,3-diene (4), and 3-methylpenta-1,3-diene (5). The agostic structures of [3-{(1–3-η3)-1,1-dimethylallyl}-1,2-(CH3)2-3,1,2-closo-RhC2B9H9] (7a) and [3-{(1–3-η3)-1,1,2-trimethylallyl}-1,2-(CH3)2-3,1,2-closo-RhC2B9H9] (8a) have been unambiguously confirmed by single-crystal X-ray diffraction studies. Two of these π-allyl complexes prepared were evaluated for their efficacy in hydroformylation of the model alkenes under syngas (CO/H2) using supercritical carbon dioxide (scCO2) as the solvent, and both display excellent conversion and high regioselectivity in the formation of aldehyde products.

Agostic interaction

Alkene

Diene

Isoprene

Migratory insertion

10.1021/om300432j

Cite

Citations (16)

CCDC 943971: Experimental Crystal Structure Determination

The Cambridge Structural Database (2013)

Konstantin I. Galkin Sergey E. Lubimov Ivan A. Godovikov F.M. Dolgushin Alexander F. Smol’yakov

Crystal (programming language)

10.5517/cc10p8pn

Cite

Citations (0)

Ligand-displacement reactions as a powerful route to closo-ruthenacarboranes incorporating bidentate N-donor ligands

Mendeleev Communications (2010)

D.I. D'yachikhin F.M. Dolgushin Ivan A. Godovikov Igor T. Chizhevsky

Ethylene diamine

10.1016/j.mencom.2010.05.018

Cite

Citations (9)

Semi-sandwich platinum metals metallacarboranes derived from nido-C2B9H12−: Chemistry and structural studies

Journal of Organometallic Chemistry (1997)

Igor T. Chizhevsky Alexandr I. Yanovsky Yuri T. Struchkov

Carborane

Structural chemistry

Diene

10.1016/s0022-328x(96)06763-0

Cite

Citations (25)

Stable Agostic (C−H···M)closo-Irida- andcloso-Rhodacarboranes with σ,η²-Cyclooctenyl Ligands. Crystal and Molecular Structure ofcloso-3,3-(σ,η²-C₈H₁₃)-1,2-μ-(ortho-xylylene)-3,1,2-IrC₂B₉H₉

Organometallics (2004)

Alexander V. Safronov Т.В. Зиневич F.M. Dolgushin Oleg L. Tok E.V. Vorontsov

Agostic (C−H···M) complexes [closo-3,3-(σ,η2-C8H13)-1,2-μ-(ortho-xylylene)-3,1,2-IrC2B9H9] (5) and [closo-3,3-(σ,η2-C8H13)-1,2-μ-(ortho-xylylene)-3,1,2-RhC2B9H9] (9), stable in the solid state, have been prepared via the reaction of [M(η4-COD)Cl]2 (M = Ir, Rh) with the K+ salt of the [nido-7,8-μ-(ortho-xylylene)-7,8-C2B9H10]- anion and characterized by a combination of analytical (in the case of 5) and multinuclear NMR data, including a single-crystal X-ray diffraction study of 5. The crystallographic study confirmed the agostic structure of 5 and revealed that the orientation of the σ,η2-cyclooctenyl moiety relative to the carborane ligand is substantially influenced by the specific intramolecular C−H···π interaction between the agostic hydrogen and the π-system of the cage aromatic substituent. In solution, 5 exhibited both "side-to-side" agostic hydrogen migration and reversible interconversion with [closo-3-(η3-C8H13)-1,2-μ-(ortho-xylylene)-3,1,2-IrC2B9H9] (8). The agostic rhodium complex (9), in contrast, converts irreversibly both in the solid state and in solution to its η3-cyclooctenyl isomer [closo-3-(η3-C8H13)-1,2-μ-(ortho-xylylene)-3,1,2-RhC2B9H9] (11), which thus could be obtained as a pure solid. In solution, complex 11 is fluxional and shows an agostic C−H···Rh interaction. The fluxional process involves the exchange between the endo hydrogen atoms, on one hand, and the exo and allyl hydrogens of the C8-ring, on the other hand, confirmed by 2D [1H−1H]-EXSY spectroscopy. Solution structures of the agostic complexes obtained are discussed in detail on the basis of normal and low-temperature 1H and 13C/13C{1H} NMR spectroscopic data.

Agostic interaction

Xylylene

Moiety

Carborane

10.1021/om049715r

Cite

Citations (19)

CCDC 1496176: Experimental Crystal Structure Determination

The Cambridge Structural Database (2016)

E. V. Balagurova I. V. Pisareva Alexander F. Smol’yakov F.M. Dolgushin Ivan A. Godovikov

10.5517/ccdc.csd.cc1m6wrg

Cite

Citations (0)

CCDC 942140: Experimental Crystal Structure Determination

The Cambridge Structural Database (2014)

F.M. Dolgushin Alexandr Yu Kostukovich I. V. Pisareva Vitalii E. Konoplev Igor T. Chizhevsky

Crystal (programming language)

10.5517/cc10mcmm

Cite

Citations (0)

New Rhodacarborane−Phosphoramidite Catalyst System for Enantioselective Hydrogenation of Functionalized Olefins and Molecular Structure of the Chiral Catalyst Precursor [3,3-{(S)-PipPhos}₂-3-H-1,2-(o-xylylene)-closo-3,1,2-RhC₂B₉H₉]

Organometallics (2011)

L.S. Alekseev S. E. Lyubimov F.M. Dolgushin Valentin V. Novikov В. А. Даванков

Formally 16-electron closo- and pseudocloso-(η3-cyclooctenyl)rhodacarboranes of the general formula [3-{(1−3-η3)-C8H13}-1,2-R,R′-3,1,2-RhC2B9H9] (1 (closo), R, R′ = μ-1′,2′-CH2C6H4CH2; 2 (pseudocloso), R = R′ = PhCH2) coupled in situ with the chiral phosphoramidite (S)-PipPhos (3) were found to catalyze an asymmetric hydrogenation of functionalized olefins (enamides) with enantioselectivities as high as 97−99.7% and with 92−100% conversions. The key catalyst precursor [3,3-{(S)-PipPhos}2-3-H-1,2-(o-xylylene)-closo-3,1,2-RhC2B9H9] (16), independently prepaped by the stoichometric reaction of 1 with 3 in benzene, was found to show of enantioselectivities and conversions upon the hydrogenation of prochiral enamides at the same levels as those observed for the relevant precursor formed in situ from 1 and 3. The structure of 16 has been established on the basis of analytical and multinuclear NMR data as well as a single-crystal X-ray diffraction study. In contrast to complex 1, complex 2 reacts with 3 to afford the unstable hydrido−rhodium species [3,3-{(S)-PipPhos}2-3-H-1,2-(PhCH2)2-3,1,2-RhC2B9H9] (17), the formation of which and further conversion into the salt [(S)-(PipPhos)4Rh]+[7,8-(PhCH2)2-nido-7,8-C2B9H10]− (18) was detected by time-dependent 1H NMR spectra. Some conclusions regarding the catalysis mechanistic pathway, which is consistent with that generally accepted for the rhodacarborane-catalyzed alkene hydrogenation, are made.

Phosphoramidite

Alkene

Asymmetric hydrogenation

10.1021/om101201e

Cite

Citations (23)