A5044095860- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Organometallic Complex Synthesis and Catalysis
- Metal complexes synthesis and properties
- Crystallography and molecular interactions
- Asymmetric Hydrogenation and Catalysis
- Carbon dioxide utilization in catalysis
- Synthetic Organic Chemistry Methods
- Magnetism in coordination complexes
- Polyoxometalates: Synthesis and Applications
- Inorganic Chemistry and Materials
- Catalytic Cross-Coupling Reactions
- Coordination Chemistry and Organometallics
- Crystal structures of chemical compounds
- Synthesis and characterization of novel inorganic/organometallic compounds
- Synthesis and Characterization of Heterocyclic Compounds
- Silicone and Siloxane Chemistry
- Organometallic Compounds Synthesis and Characterization
- Organoboron and organosilicon chemistry
- Lanthanide and Transition Metal Complexes
- Machine Learning in Materials Science
- Fluorine in Organic Chemistry
- Antibiotic Use and Resistance
- Atomic and Molecular Physics
- Social Capital and Networks
University of Castilla-La Mancha
2009-2024
Institut Laue-Langevin
2021
Universitat de València
1993-2013
École d'Ingénieurs en Chimie et Sciences du Numérique
2001
Laboratoire de Chimie
2001
Centre National de la Recherche Scientifique
2001
Instituto de Catálisis y Petroleoquímica
1996-1998
Instituto de Química Física Blas Cabrera
1998
Consejo Superior de Investigaciones Científicas
1998
University of Parma
1996
The reactions of CpZr(CH(3))(3), 1, and Cp(2)Zr(CH(3))(2), 2, with partially dehydroxylated silica, silica-alumina, alumina surfaces have been carried out careful identification the resulting surface organometallic complexes in order to probe relationship between catalyst structure polymerization activity. characterization supported has achieved most cases by situ infrared spectroscopy, microanalysis, qualitative quantitative analysis evolved gases during labeled surface, solid state (1)H...
Reaction of [Cp*TiMe3] with O(SiPh2OH)2 yields the titanium siloxide derivative [Cp*TiMe{(OSiPh2)2O}] (1). Complex 1 reacts H2O to yield corresponding oxo-titanium [(Cp*Ti{(OSiPh2)2O})2(µ-O)] (2). The molecular structure complex 2 has been established by X-ray diffraction. triphenylsilanol give asymmetric [Cp*Ti(OSiPh3){(OSiPh2)2O}] (3). Treatment dinuclear compound [(Cp*TiCl2)2(µ-O)] an equimolar amount [(Cp*TiCl)2{µ-(OSiPh2)2O}(µ-O)] (4) in which disiloxide moiety is bridging two atoms. 4...
The thiolate−alkylzirconocene complex Cp2ZrMe(SR) (2) (Cp = η5-C5H5; SR 4,6-dimethylpyrimidine-2-thiolate) can be prepared by reacting the corresponding dialkylmetallocene Cp2ZrMe2 (1) with 1 equiv of 4,6-dimethyl-2-mercaptopyrimidine. X-ray structure analysis 2 revealed that thiolate group is bonded in an η2 fashion through sulfur and one nitrogen atoms. Complex reacts 2,6-dimethylphenyl isocyanide (CNXylyl) to yield iminoacyl derivative, Cp2Zr(η2-MeCNXylyl)(SR) (4). molecular 4 shows...
Abstract Titanium complexes with chelating alkoxide ligands [TiCp*(O 2 Bz)(OBzOH)] ( 1 ) and [TiCp*(Me){(OCH Py}] were synthesised by reaction of [TiCp*Me 3 ] (Cp*= η 5 ‐C Me 2‐hydroxybenzyl alcohol ((HO) Bz) 2,6‐pyridinedimethanol ((HOCH Py), respectively. Complex reacts [{M( μ ‐OH)(cod)} (M=Rh, Ir) to yield the early–late heterobimetallic M(cod)] [M=Rh ), Ir 4 )]. Carbon monoxide readily replaces COD ligand in give rhodium dicarbonyl derivative Rh(CO) ). Compound protonolysis a TiMe bond...
A series of new tantalum-digol (digol = diethylene glycolate) complexes TaCp*Cl2(κ3-digol) (1), TaCp*Me2(κ3-digol) (2), TaCp*ClMe(κ3-digol) (3), and TaCp*Me(OTf)(κ3-digol) (OTf triflate) (4) have been synthesized. Treatment 2 with 1 equiv H2O·B(C6F5)3 enabled the synthesis a tantalum-oxo borane-stabilized complex, TaCp*{O·B(C6F5)3}(κ3-digol) (5). Insertion processes into methyl groups 2, 3, 4 were not observed upon reaction CO or isocyanides. In contrast, complex reacted slowly...
The new titanium dicarboxylate complex Cp*TiMe(OOC)2py (2) [Cp*=eta5-C5Me5; (OOC)2py = 2,6-pyridinedicarboxylate] has been synthesized. reaction of 2 with water renders [Cp*Ti(OOC)2py]2O (3). molecular structure 3 studied by X-ray diffraction methods. Complex reacts isocyanides to yield the respective iminoacyl derivatives Cp*Ti(eta2-MeCNR)(OOC)2py [R=tBu (4), 2,6-dimethylphenyl (xylyl) (5)]. complex4 established diffraction. Compound employed as a building block for preparation early-late...
Rhodium supported on titania-silica is modeled by 1, which was obtained from [{Cp*TiMe(μ-O2 SiPh2 )}2 ] (2) and [{Rh(OH)(cod)}2 ]. Complex 2 its triply bridged derivative [Cp*Ti(μ-O2 )3 TiCp*] (3) can be envisaged as molecular models of systems. Compounds 1-3 could potentially provide insights into the nature catalytically active sites in these systems; cod=1,5-cycloctadiene, Cp*=η5 -C5 Me5 .
The new tantalum dialkoxide complexes Cp*TaCl 2 (OCH ) py (1), trans-Cp*TaMe -py (2), and cis-Cp*TaMe (3) (Cp* = η 5 -C Me ; 2,6-pyridinedimethoxide) have been synthesized. molecular structures of 1 studied by X-ray diffraction methods. reaction complex 3 with carbon monoxide renders Cp*Ta-(η -Me CO)(OCH (4), while isocyanides yields the respective azatantalacyclopropanes Cp*Ta(η CNxylyl)(OCH (6) (xylyl 2,6-dimethylphenyl) CN t Bu)(OCH (7). structure 4 has established diffraction....
The reactions of [Cp*TiMe{(OCH2)2py}] (1) and [Cp*TiMe{(OOC)2py}] (2) with triflic acid (HOTf) in the presence a series Lewis bases, such as water, pyridine, tert-butylpyridine, give rise to corresponding cationic species, namely [Cp*TiL{(OCH2)2py}]+OTf- (3−5) [Cp*TiL{(OOC)2py}]+OTf- (6, 7). Similar processes 1 HOTf 2,6-pyridinedimethanol 2-pyridinemethanol lead binuclear complexes [{Cp*Ti((OCH2)2py)}2{μ-(HOCH2)2py}]OTf2 (8) [Cp*Ti{(OCH2)2py}{(HOCH2)py}]OTf (9), respectively. In an unusual...
Abstract Tantalum complexes [TaCp*Me{κ 4 ‐ C,N,O,O ‐(OCH 2 )(OCHC(CH NMe )CH)py}] ( ) and NH 5 ), which contain modified alkoxide pincer ligands, were synthesized from the reactions of 3 N,O,O )(OCH)py}] (Cp*=η ‐C Me with HCCCH , respectively. The )(OCHC(Ph)CH)py}] )(OCHC(SiMe triflic acid (1:2 molar ratio) rendered corresponding bis‐triflate derivatives [TaCp*(OTf) {κ )(OCHC(Ph)CH )py}] 6 )CH 7 Complex reacted in a 1:2 ratio to selectively yield water‐soluble cationic complex...
The antitumor activity of Ti(IV)-based compounds put them in the spotlight for cancer treatment past, but their lack stability vivo due to a high rate hydrolysis has hindered development as drugs. As possible solution this problem, we have reported synthesis strategy through which combined titanocene fragment, tridentate ligand, and long aliphatic chain. This allowed us generate titanium compound (Myr-Ti) capable interacting with albumin, highly stable water cytotoxic tumor cells[1]....
Abstract New monocyclopentadienyl species of Ta V , [Cp*TaL 3 (XR)] (L = Cl, Me, X O, S) bearing 4,6‐dimethyl‐2‐pyrimidinethiolate (SR SC 6 H 7 N 2 ) or 3‐cyano‐4,6‐dimethyloxypyridine (OR OC 8 ligands were prepared, namely [Cp*TaCl (SC )] ( 1 ), (OC [Cp*TaMe ). In addition, a bis(oxypyridine)titanium( IV complex [Cp*TiMe ] was isolated. The X‐ray structure analysis revealed that the thiolate group is bonded to metal center through sulfur atom and one nitrogen atoms in an η ‐fashion....
A series of new titanium pyridine−alkoxide complexes, [TiCp*Cl{2,6-(OCH2)2py-κ3-O,N,O}] (2), [TiCp*{2,6-(OCH2)py(CH2OH)-κ1-O}{2,6-(OCH2)2py-κ3-O,N,O}] (3), [TiCp*Me2{2-(OCH2)py-κ1-O}] (4), [TiCp*Me{2-(OCH2)py-κ1-O}2] (5), and [TiCp*(O){2-(OCH2)py-κ2-O,N})] (6), have been synthesized. All these compounds were characterized by NMR spectroscopy. The single-crystal structures [TiCp*Me{2,6-(OCH2)2py-κ3-O,N,O}] (1), 2, 3, 4 determined revealed the presence piano nonpiano stool geometries....
A series of new tantalum complexes containing a [NSN]-type amide ligand (2,2′-diamidophenyl sulfide) have been synthesized and characterized. The [TaCp*Cl2{(N-C6H4)2S-κ3-N,S,N}] (1) [TaCp*Me2{(N-C6H4)2S-κ3-N,S,N}] (2) were prepared by reaction 2,2′-diaminophenyl sulfide with [TaCp*Cl4] [TaCp*Me2Cl2], respectively. In addition, [TaCp*MeCl{(N-C6H4)2S-κ3-N,S,N}] (3) [TaCp*(H)2{(N-C6H4)2S-κ3-N,S,N}] (4) 1 AlMe3 NaBEt3H, reactivity these nucleophiles electrophiles was also studied,...
The reaction of Cp2ZrCl2 (Cp = η5-C5H5) with 2 equiv the lithium amide derivative LiNHC6H4-o-SMe affords new zirconium complex Cp2Zr(NHC6H4-o-SMe)2 (2). structure has been determined by X-ray diffraction. When is carried out in an 1:1 ratio, Cp2ZrCl(NHC6H4-o-SMe) (3) generated as major product. Reaction "Cp*2Zr" (Cp* η5-C5Me5) 2-(methylmercapto)aniline yields a hydride−amide Cp*2ZrH(NHC6H4) (4). [RhCl(COD)]2 generates 3 and rhodium Rh(NHC6H4-o-SMe)(COD), which also directly synthesized...
The reaction of Cp*TiMe3 with 3 equiv [Ir(μ-OH)(COD)]2 affords the new heterometallic organometallic oxide Cp*Ti(μ3-O)3[Ir(COD)]3 (3). Reaction Cp*TaMe4 4 [M(μ-OH)(COD)]2 (M = Rh, Ir) yields complexes Cp*Ta(μ3-O)4[M(COD)]4 [M Rh (5), Ir (6)]. structure compound 5 has been determined by X-ray diffraction. Complexes and 6 react alcohol 3-CN-4,6-Me2-2-OH−C5HN to yield corresponding rhodium (7) or iridium (8) alkoxide complexes. complex 8 [Rh(μ-OH)(COD)]2 thiolacetic acid gives rise a...
A series of new tantalum-tbcp [tbcp = 2,2′-thiobis(4,6-dichlorophenolato)] and tantalum-tbop [tbop 2,2′-thiobis(6-tert-octylphenolato)] complexes [TaCp*Cl2(κ3-tbop)] (1), [TaCp*Cl2(κ3-tbcp)] (2), [TaCp*Me2(κ3-tbop)] (3), [TaCp*Me2(κ3-tbcp)] (4), [TaCp*Me(κ3-tbop)(OTf)] (OTf triflate) (5), [TaCp*Me(κ3-tbcp)(OTf)] (6), [TaCp*(κ3-tbop)(OTf)2] (7), [TaCp*(κ3-tbcp)(OTf)2] (8) have been synthesized. Insertion processes into the methyl groups complex 3 were not observed upon reaction with CO or...