A5005923402- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Organometallic Complex Synthesis and Catalysis
- Coordination Chemistry and Organometallics
- Synthesis and characterization of novel inorganic/organometallic compounds
- Crystallography and molecular interactions
- Magnetism in coordination complexes
- Lanthanide and Transition Metal Complexes
- Asymmetric Hydrogenation and Catalysis
- Carbon dioxide utilization in catalysis
- Inorganic Chemistry and Materials
- Synthetic Organic Chemistry Methods
- biodegradable polymer synthesis and properties
- Organoboron and organosilicon chemistry
- Metal complexes synthesis and properties
- Electron Spin Resonance Studies
- Asymmetric Synthesis and Catalysis
- Ferrocene Chemistry and Applications
- Chemical Synthesis and Characterization
- Chemical Synthesis and Reactions
- Crystal structures of chemical compounds
- Catalytic Alkyne Reactions
- Advanced NMR Techniques and Applications
- Metal-Catalyzed Oxygenation Mechanisms
- Organic and Molecular Conductors Research
G.A. Razuvaev Institute of Organometallic Chemistry
2016-2025
A. N. Nesmeyanov Institute of Organoelement Compounds
2018-2024
Saratov State University
2014-2015
Yaroslav-the-Wise Novgorod State University
2014-2015
Russian Academy of Sciences
2006-2012
Université Paris-Sud
2008
Institut de Chimie Moléculaire et des Matériaux d'Orsay
2008
Centre National de la Recherche Scientifique
2008
University of Bayreuth
2008
A series of new bis(guanidinate) alkoxide Group 3 metal complexes [Ln((Me3Si)2NC(NiPr)2)2(OR)] (R=OtBu, Ln=Y, Nd, Sm, Lu; R=OiPr, Lu) has been synthesized. X-ray structural determinations revealed that tert-butoxides are monomeric complexes. The isopropoxide complex [Y((Me3Si)2NC(NiPr)2)2(OiPr)] undergoes slow decomposition in solution, to afford the unusual dimeric amido [(Y((Me3Si)2NC(NiPr)2)2(mu-N(iPr)C triple chemical bond N))2]. Complexes active catalysts/initiators for ROP rac-lactide...
New chiral binaphthylamido yttrium and ytterbium ate complexes with lithium potassium counterions have been synthesised characterised. X-ray structures obtained for [Li(thf)4][Ln{(R)-C20H12(NC5H9)2}2] (Ln=Yb, Y) [K(thf)5][Yb{(R)-C20H12(NCH2CMe3)2}2] as isostructural complexes. The efficiency of these the enantioselective intramolecular hydroamination was examined. [Li(thf)4][Yb{(R)-C20H12(NC5H9)2}2] afforded highest enantiomeric excess (up to 87 %) synthesis a spiropyrrolidine, while...
Yttrium complexes – efficient precatalysts for intermolecular olefin hydrophosphination and hydroamination.
New heteroleptic Yb(II)-amide species supported by amidinate and 1,3,6,8-tetra-tert-butylcarbazol-9-yl ligands [2-MeOC6H4NC(tBu)N(C6H3-iPr2-2,6)]YbN(SiMe3)2(THF) (6) [1,3,6,8-tBu4C12H4N]Yb[N(SiMe3)2](THF)n (n = 1 (7), 2 (8)) were synthesized using the amine elimination approach. Complex 6 features an unusual κ(1)-N,κ(2)-O,η(6)-arene coordination mode of ligand onto Yb(II). Complexes 7 8 represent first examples lanthanide complexes with π-coordination carbazol-9-yl ligands. 7, as well...
The synthesis, structures, magnetic and luminescence (including thermometry) properties of a series three-blade propeller homoleptic lanthanide complexes are reported.
The new family of Lewis base free hydrido complexes rare-earth metals supported by guanidinate ligands [{Ln{(Me3Si)2NC(NiPr)2}2(mu-H)}2] (Ln = Y, Nd, Sm, Gd, Yb) was synthesized and structurally characterized. Single-crystal X-ray solution NMR studies revealed that these are dimeric in both solid state [D6]benzene. can adopt eclipsed (Nd, Gd) or staggered (Y, Yb, Lu) conformations depending on the metal-atom size. Catalytic activity polymerization ethylene, propylene, styrene has been...
The reactions of the bis(alkyl) complexes [Ap*Ln(CH2SiMe3)2(thf)] (Ln = Y, Lu) with both PhSiH3 and H2 result in selective assembly novel trinuclear rare-earth alkyl hydrido clusters [(Ap*Ln)3(μ2-H)3(μ3-H)2(CH2SiMe3)(thf)2]. Both cluster compounds are single-component ethylene polymerization catalysts.
A monoanionic amido–imino ligand system [(2,6-iPr2C6H3)NC(Me)C(CH2)N(C6H3-2,6-iPr2)]− was successfully employed for the synthesis of monomeric dichloro [(2,6-iPr2C6H3)NC(Me)C(CH2)N(C6H3-2,6-iPr2)]LnCl2(THF)2 (Ln = Y, 2Y; Lu, 2Lu) and bis(alkyl) [(2,6-iPr2C6H3)NC(Me)C(CH2)N(C6H3-2,6-iPr2)]Ln(CH2SiMe3)2(THF) 4Y; 4Lu) species yttrium lutetium. Dichloro complexes 2Y 2Lu turned out to be unstable in aromatic solvents. The symmetrization reaction case affords complex coordinated by dianionic...
New chiral binaphthylamido alkyl ate and neutral yttrium ytterbium complexes have been synthesized characterized. X-ray structures obtained for [(R)-C20H12(NC5H9)2]Y[(μ-Me)2Li(THF)2(μ-Me)Li(THF)] [(R)-C20H12(NC5H9)2]Ln[(μ-Me)2Li(TMEDA)(μ-Me)Li(OEt2)] (Ln = Y, Yb) the complex [(R)-C20H12(NC5H9)2]YCH2SiMe3(DME). Both types of can be easily prepared in a one-pot procedure starting from chlorides used situ. They proved to very efficient catalysts enantioselective intramolecular hydroamination...
Yttrium dialkyl complexes coordinated by 6-aryl-substituted amidopyridinate ligands undergo selective intramolecular sp2 or sp3 C−H bond activation. Upon treatment with PhSiH3 of the resulting Y−C(alkyl, aryl) Y−C(alkyl,benzyl) systems, a σ-bond metathesis reaction takes place selectively at Y−C(alkyl) bond, generating rare dimeric aryl−hydrido benzyl−hydrido yttrium complexes, respectively.
Oxidation reactions of the Yb(II) hydride [{tBuC(NC6H3-2,6-iPr2)2}Yb(μ-H)]2 (1) with CuCl (1:2 molar ratio) and (PhCH2S)2 (1:1 revealed that hydrido anion in 1 is a stronger reductant than cation. Both occur evolution H2 afford dimeric species [{tBuC(NC6H3-2,6-iPr2)2}Yb(μ-X)]2 (X = Cl (2), SCH2Ph (3)) which κ1-amido,η6-arene type coordination amidinate ligand retained. Reaction 2 equiv results oxidation both centers leads to formation Yb(III) complex [{tBuC(NC6H3-2,6-iPr2)2}Yb(μ-SCH2Ph)2]2...
Addition of two Ln-H bonds an Yb(II) hydrido complex supported by bulky amidinate ligand to a C≡C bond lead the formation 1,2-dianionic bibenzyl fragment. Both and centers are oxidized under reaction conditions. The resulting Yb(II)-η(6) -arene interaction is surprisingly robust: arene cannot be replaced from metal coordination sphere when treated with Lewis bases.
Three luminescent single-molecules magnets based on different fluorinated alkoxide ligands and exhibiting high magnetization reversal barriers are reported.
Abstract A bis(amido)yttrium chloride coordinated by ( R )‐ N , N′ ‐diisopropyl‐1,1′‐binaphthyl‐2,2′‐diamide [Y{( )‐C 20 H 12 (N i Pr) 2 }Cl(thf) ] has been prepared and characterized X‐ray analysis along with the corresponding yttrium ate complex [Li(thf) 4 ][Y{( } ]. The reaction of [( ‐diisopropyl‐1,1′‐binaphthyl‐2,2′‐diamido]yttrium lithium diisopropylamine leads to formation a neutral tris(amido)yttrium which was NMR spectroscopy. new complexes }{N Pr }] [{Li(thf) }(Y{( )], contain same...
Lanthanide alkyl–hydrido clusters [(Ap*Ln)3(μ2-H)3(μ3-H)2(CH2SiMe3) (thf)2] (Ln=Er, Yb) have been synthesized. The reaction occurs selectively through protonolysis of the YC bond and results in formation cationic trinuclear hydrido complex [(Ap*Y)3(μ2-H)3(μ3-H)2(thf)3][B(C6F5)4] (see scheme; Y green, H red, O pink, N blue, C gray). Detailed facts importance to specialist readers are published as "Supporting Information". Such documents peer-reviewed, but not copy-edited or typeset. They...
The review presents data on the synthesis, structure, reactivity, and catalytic activity of alkyl derivatives rare earth metals in oxidation state +2 (Sm, Eu, Yb) their analogues containing heavy alkaline (Ca, Sr, Ba). synthetic aspects structural features this unique class organometallic compounds, which contain highly reactive M–C bonds, including alkyl, α-silylmethyl, also benzyl, diphenylmethyl, triphenylmethyl are considered. bibliography includes 157 references.
We report the synthesis, structures, and magnetic luminescence properties of a series new mono- dinuclear Er 3+ complexes derived from sterically demanding aryloxide fluorinated alkoxide ligands.
The reaction of anhydrous YCl3 with an equimolar amount lithium N,N'-diisopropyl-N' '-bis(trimethylsilyl)guanidinate, Li[(Me3Si)2NC(Ni-Pr)2], in tetrahydrofuran (THF) afforded the monomeric monoguanidinate dichloro complex {(Me3Si)2NC(Ni-Pr)2}YCl2(THF)2 (1). Alkylation 1 2 equiv LiCH2SiMe3 hexane at 0 °C yielded salt-free dialkyl {(Me3Si)2NC(Ni-Pr)2}Y(CH2SiMe3)2(THF)2 (2). bis(triethylborohydride) [(Me3Si)2NC(Ni-Pr)2]Y[(μ-H)(μ-Et)2BEt]2(THF) (5) was prepared by LiBEt3H a toluene−THF mixture...
Abstract Lewis base free hydrido complexes of yttrium and lutetium supported by bulky cyclohexyl‐substituted guanidinato ligands, [Ln(μ‐H){(Me 3 Si) 2 NC(NCy) } ] (Ln = Y, Lu), were synthesized characterized. Single‐crystal X‐ray diffraction studies revealed dimeric structures. 1 H NMR spectroscopy shows that complex [Y(μ‐H){(Me retains its structure in C 6 D solution. Scrambling the Lu) resulted an equilibrium mixture containing heterodimetallic species [{(Me Y(μ‐H) Lu{(Me ], indicating...
Abstract Two new amidines that contain a pendant Lewis base in the side arm, 2‐MeOC 6 H 4 NC( t Bu)NH(2,6‐R 2 C 3 ) (R = Me, i Pr), were synthesized and successfully employed as tridentate ligands for preparation of dialkyl rare earth complexes [2‐MeOC Bu)N(2,6‐R )]Ln(CH SiMe (L) n {Ln Y, Lu; R Pr; L thf ( 2), dme 1)}. These provided enhanced stability complexes. The X‐ray structure determinations revealed intramolecular coordination group is realized if molecule coordinated to metal center...