A5014744101- Organometallic Complex Synthesis and Catalysis
- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Asymmetric Hydrogenation and Catalysis
- Metal complexes synthesis and properties
- Radiopharmaceutical Chemistry and Applications
- Coordination Chemistry and Organometallics
- Catalytic Cross-Coupling Reactions
- Cyclopropane Reaction Mechanisms
- N-Heterocyclic Carbenes in Organic and Inorganic Chemistry
- Chemical Synthesis and Analysis
- Synthesis and characterization of novel inorganic/organometallic compounds
- Lanthanide and Transition Metal Complexes
- Synthetic Organic Chemistry Methods
- Organophosphorus compounds synthesis
- Crystallography and molecular interactions
- Carbon dioxide utilization in catalysis
- Organometallic Compounds Synthesis and Characterization
- Crystal structures of chemical compounds
- Ferrocene Chemistry and Applications
- Catalytic C–H Functionalization Methods
- Fluorine in Organic Chemistry
- Synthesis and Biological Evaluation
- Metal-Catalyzed Oxygenation Mechanisms
- Magnetism in coordination complexes
Galicia Sur Biomedical Foundation
2019-2022
Universidade de Vigo
2009-2022
Servicio Gallego de Salud
2019-2022
Ca' Foscari University of Venice
2004-2007
Universidade de Santiago de Compostela
1989
Hydride complexes IrHCl(2)(PiPr(3))P(2) (1) and IrHCl(2)P(3) (2) [P = P(OEt)(3) PPh(OEt)(2)] were prepared by allowing IrHCl(2)(PiPr(3))(2) to react with phosphite in refluxing benzene or toluene. Treatment of IrHCl(2)P(3), first HBF(4).Et(2)O then an excess ArCH(2)N(3), afforded benzyl azide [IrCl(2)(eta(1)-N(3)CH(2)Ar)P(3)]BPh(4) (3, 4) [Ar C(6)H(5), 4-CH(3)C(6)H(4); P P(OEt)(3), PPh(OEt)(2)]. Azide reacted CH(2)Cl(2) solution, leading the imine derivative...
Triazenide [M(η2-1,3-ArNNNAr)P4]BPh4 [M = Ru, Os; Ar Ph, p-tolyl; P P(OMe)3, P(OEt)3, PPh(OEt)2] complexes were prepared by allowing triflate [M(κ2-OTf)P4]OTf species to react first with 1,3-ArNNN(H)Ar triazene and then an excess of triethylamine. Alternatively, ruthenium triazenide [Ru(η2-1,3-ArNNNAr)P4]BPh4 derivatives obtained reacting hydride [RuH(η2-H2)P4]+ RuH(κ1-OTf)P4 compounds 1,3-diaryltriazene. The characterized spectroscopy X-ray crystallography the...
The first example of evolution an iridanaphthalene into indanone through intermediate indenyl is reported, serving as a good starting material to obtain indanones. Two new iridanaphthalenes are obtained by intramolecular C–H activation phenyl ring carbene ligand in [IrCp*{═C(OMe)CH═CPh2}(L)]PF6 (L = PPh2Me, PMe3) complexes. It demonstrated that these complexes can undergo thermal reaction give and 3-phenylindanone.
Hydride complexes [ReH(CO)4L] 1, [ReH(CO)3L2] 2, [ReH(CO)2L3] 3 and [ReH(CO)L4] 4 [L = P(OEt)3 a, PPh(OEt)2 b, PPh2(OEt) c or PPh2(OMe) d] were prepared by treating [ReH(CO)5] with the appropriate phosphite under UV irradiation reflux. The characterised IR, 1H, 13C 31P NMR spectroscopy crystal structure determinations of 1d 2d. Protonation monocarbonyls in CD2Cl2 HBF4·Et2O resulted an equilibrium mixture classical dihydride [ReH2(CO)L4]+BF4– their non-classical tautomers...
The trichlorostannyl complexes M(SnCl3)(CO)nP5-n (1−3: M = Mn, Re; P PPh(OEt)2 (a), P(OEt)3 (b); n 2, 3) were prepared by allowing chloro MCl(CO)nP5-n compounds to react with an excess of SnCl2·2H2O. Treatment 1−3 NaBH4 in ethanol yielded the tin polyhydride derivatives M(SnH3)(CO)nP5-n (4−6). MgBrMe gave trimethylstannyl M(SnMe3)(CO)nP5-n (7−9), and reaction MgBr(C⋮CH) trialkynylstannyl M[Sn(C⋮CH)3](CO)nP5-n (10, 11). alkynylstannyl M[Sn(C⋮CR)3](CO)nP5-n (12−14: R p-tolyl) also Li+[C⋮CR]-...
Iridanaphthalene complexes are synthesized from the corresponding methoxy(alkenyl)carbeneiridium compounds. The electronic character of substituents on 6-position metallanaphthalene ring is crucial point view stability iridanaphthalene, [Ir[upper bond 1 start]Cp*{=C(OMe)CH=C(o-C[upper end]6H4)(Ph)}(PMe3)]PF6, vs. its transformation to indanone derivatives. Stability studies iridanaphthalene compounds revealed that strong electron donor (-OMe) stabilize while weak (-Me) and withdrawing (-NO2)...
Tris(pyrazolyl)borate aryldiazenido complexes [RuTpLL'(ArN(2))](BF(4))(2) (1-3) [Ar = C(6)H(5), 4-CH(3)C(6)H(4); Tp hydridotris(pyrazolyl)borate; L P(OEt)(3) or PPh(OEt)(2), L' PPh(3); P(OEt)(3)] were prepared by allowing dihydrogen [RuTp(eta(2)-H(2))LL'](+) derivatives to react with aryldiazonium cations. Spectroscopic characterization (IR, (15)N NMR) using the (15)N-labeled strongly supports presence of a linear [Ru]-NN-Ar group. Hydrazine [RuTp(RNHNH(2))LL']BPh(4) (4-6) [R H, CH(3),...
The (methoxy)alkenylcarbeneiridium complexes [IrCp*Cl{═C(OMe)CH═CR1R2}L]PF6 (R1 = CH3, R2 Ph; R1 Ph, R2= H; L PPh2Me, PMe3) can undergo an intramolecular C–H activation of one the substituents R alkenyl fragment to give new five-membered-ring cyclometalated iridium complexes. In this work it is shown that arrangement in determines size ring iridacycle iridacyclopenta-1,3-diene [IrCp*{═C(OMe)CH═CRCH2}L]PF6 (L CH3 (2a), Ph (4a); PMe3, (2b), (4b)) be deprotonated iridacyclopenta-2,4-diene...
The iridium methoxycarbene [IrCp*Cl{═C(OMe)CH═CPh2}(PPh2Me)]PF6 (3) can undergo a clean attack by nucleophiles at least two different pathways: (1) an unusual nucleophilic of primary, secondary, and tertiary amines the sp3 carbon–oxygen bond, which gives acyl complex amine alkylation (2) ammonia carbenic carbon, forms primary aminocarbene.
Abstract Pyrazole (HRpz) [MCl(η 6 ‐p ‐cymene)(HRpz)L]BPh 4 ( 1 – 8 ) and imidazole (HIm) complexes ‐cymene)(HIm)L]BPh 9 10 [M = Ru, Os; R H, 3‐Me, 3,5‐Me 2 ; L P(OEt) 3 , PPh(OEt) PPh OEt, CN t Bu] were prepared by allowing the dichloro compounds MCl (η ‐cymene)L to react with appropriate azole in presence of NaBPh . Treatment an excess both pyrazole NEt yielded pyrazole–pyrazolate derivatives [M(Rpz)(η 11 14 ). Conversely, reaction carbonyl RuCl ‐cymene)(CO) or bisazole ‐cymene)(HRpz) ]BPh...
Trichlorostannyl complexes [M(SnCl3)(bpy)2P]BPh4 [M = Ru, P P(OEt)(3), 1a PPh(OEt)2 1b; M Os, P(OEt)3 2; bpy 2,2'-bipyridine] were prepared by allowing chloro [MCl(bpy)2P]BPh4 to react with SnCl2 in 1,2-dichloroethane. Bis(trichlorostannyl) compounds Ru(SnCl3)2(N-N)P2 [N-N bpy, 3a, 3b; N-N 1,10-phenanthroline (phen), 4] also reacting [RuCl(N-N)P3]BPh4 precursors SnCl2.2H2O ethanol. Treatment of both mono- 1a, 2 and bis 3a trichlorostannyl NaBH4 afforded bis(trihydridestannyl) derivatives...
Abstract Hydroxylamine and O ‐methylhydroxylamine complexes [M(NH 2 OH)(CO) n P 5– ]BPh 4 OCH 3 )(CO) [M = Mn, Re; 1, 2, 3; P(OEt) , PPh(OEt) PPh OEt] were prepared by allowing hydrides MH(CO) to react first with triflic acid then an excess of hydroxylamine. Bidentate phosphane phosphite can also be used prepare both NH OH manganese rhenium the OR)(CO) (P–P)‐{P(OEt) }]BPh (P–P)]BPh [R H, CH ; P–P Ph POCH OPPh PO(CH ) PN(CH )CH N(CH )PPh ] types use (P–P){P(OEt) } (P–P) as precursors. The...
The pentacoordinate [PtH{P(OEt)3}4]BF4 (1) hydride complex was prepared by allowing the tetrakis(phosphite) Pt{P(OEt)3}4 to react with HBF4.Et2O at -80 degrees C. Depending on nature of acid used, however, protonation related Pt{PPh(OEt)2}4 yielded [PtH{PPh(OEt)2}4]BF4 (3) or tetracoordinate [PtH{PPh(OEt)2}3]Y (4) [Y = BF4- (a), CF3SO3- (b), Cl- (c)] derivatives. Neutral PtHClP2 (7,8) [P P(OEt)3, PPh(OEt)2] complexes were PtCl2P2 NaBH4 in CH3CN. tetrakis(phosphite)[Pt{P(OEt)3}4](BF4)2 (2)...
Abstract The hydrido complexes [ReH(Cl)(N–N)P 3 ]BPh 4 [P = PPh(OEt) 2 ; N–N 2,2′‐bipyridine (bpy), 5,5′‐dimethylbipyridine (5,5′‐Me bpy), 1,10‐phenanthroline (phen)] have been prepared by allowing ReCl P to react with the polypyridine in refluxing ethanol. dihydrido [ReH (bpy)P complex has also treating [ReHCl(bpy)P ] + cation NaBH Similarly, tricarbonyl derivative (bpy)(CO) synthesized [ReH(bpy)(CO) HBF · Et O. All characterized spectroscopically (IR and NMR spectroscopic data)...
The reaction of [Ru2Cl2(μ-Cl)2(η6-p-cymene)2] with two thiosemicarbazones obtained by the condensation N-(4-methoxybenzyl) thiosemicarbazide and 1,4-hydroxy-3-methoxyphenyl)ethan-1-one (HL1) or 2-fluoro-4-hydroxybenzaldehyde (HL2) was studied. cationic complexes formula [RuCl(η6-p-cymene)(HL)]+ were isolated as solid chloride trifluoromethylsulfate (TfO) salts. A study state NMR spectra suggests presence in material isomers that differ configuration iminic bond, C2=N3, coordinated...
Abstract Variable‐temperature NMR spectroscopic studies of new rhenium polyhydride compounds the type [ReH 7 (dcype)] ( 1 ), [Re 2 H 8 (dcype) ] 3 ) and 5 (dcype)L] 5a − f [dcype = Cy PO(CH OPCy ; L PPh n (OR) 3− , 0−2, R Me, Et] show them to be highly fluxional classical hydride complexes. In case ethoxy 5b 5d 5f three interchange processes were observed in temperature range 283−173 K their activation parameters determined by line‐shape analysis. A mechanism is proposed for each....
Abstract The bidentate diphosphinite ligand 1,2‐bis(diphenylphosphanyloxy)ethane (L), Ph 2 P–O–(CH ) –O–PPh , can be sequentially incorporated into a series of dinuclear chloro‐bridged ruthenium compounds using [RuCl (DMSO) 4 ] as precursor to give the new bioctahedral [Ru (μ‐Cl) 3 Cl(η ‐L)] ( 1 ), (DMSO)Cl(η ‐L) and Cl (η {η ‐L(O)} ). Compound contains two partially oxidised ligands that act in monodentate manner. These also obtained by direct reaction with appropriate stoichiometric amount...