José V. Cuevas Vicario

José V. Cuevas Vicario
Universidad de Burgos | UBU · Department of Chemistry

Ph. D.

About

47
Publications
5,304
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562
Citations
Citations since 2017
14 Research Items
211 Citations
201720182019202020212022202301020304050
201720182019202020212022202301020304050
201720182019202020212022202301020304050
201720182019202020212022202301020304050

Publications

Publications (47)
Article
Full-text available
Ru(II) polypyridyl complexes are widely used in biological fields, due to physico- chemical and photophysical properties. In this paper, a series of new chiral Ru(II) polypyridyl complexes (1-5) with general formula {∆/Λ-[Ru(bpy)2(X,Y-sal)]BF4} (bpy = 2,2'-bipyridyl; X,Y-sal = 5-bromosalicylaldehyde (1), 3,5-dibromosalicylaldehyde (2), 5-chlorosali...
Article
Full-text available
In order to evaluate the impact of chirality and halogen-substitution pattern on biological activity, four mixed-ligand enantiomeric pairs of Pd( ii ) complexes were synthesized and characterized.
Article
In order to better understand the effect of structure, halogen substitution, metal ions and ligand flexibility on antiproliferative activity, eight Cu(II) complexes and eight Pt(II) complexes were obtained of 2,4-X1,X2-6-((pyridine-2-ylmethylamino)methyl)phenol and 2,4-X1,X2-6-((pyridine-2-ylmethylamino)ethyl)phenol (where X is Cl, Br, or I) ligand...
Article
Time Resolved Raman spectroelectrochemistry (TR-Raman-SEC) has been used for the first time to obtain two different Raman spectra of one single analyte in the same experiment. This double detection has been accomplished thanks to the use of electrochemical surface enhanced Raman scattering (EC-SERS) and electrochemical surface oxidation enhanced Ra...
Article
Full-text available
We describe the synthesis of fluorogenic arylureas and amides and their interaction with primary or secondary amines under air and light in organic-aqueous mixtures to give rise to a new class of persistent organic radicals, described on the basis of their electron paramagnetic resonance (EPR), as well as UV–vis, fluorescence, NMR, and quantum mech...
Chapter
The chemistry of the heterocyclic compounds containing one nitrogen as part of the six- membered ring, as well as two oxygen atoms (dioxazines), one oxygen and one sulfur atoms (oxathiazines), or two sulfur atoms (dithiazines) has been compiled in previous editions of Comprehensive Heterocyclic Chemistry.1, 2, 3 For the present edition, this chapte...
Article
We describe the proof of concept of a portable testing setup for the detection of triacetone triperoxide (TATP), a common component in improvised explosive devices, which will allow for field-testing...
Article
Current societies demand sustainable synthetic procedures and accordingly the combination of two photocatalytic reactions in a one-pot process is a very appealing chemical tool. In the present work, we disclose a simple and unprecedented photocatalytic “one-pot two-steps” protocol for the chemoselective and C-3 regioselective oxidative thiocyanatio...
Article
We report the use of a tetraborylated perylenediimide as starting material for the preparation of a tetracorannulene-perylenediimide that is able to bind up to two fullerene-C60 molecules by host-guest molecular recognition with preference over C70. Titration with fullerene-C60 is followed by a dramatic shift of the aromatic signals in 1H NMR and a...
Chapter
Quantum chemical calculations can afford valuable information to understand the chemical processes and the structural features of chemical species. This tool has become very informative, and several aspects can be discussed on the thioamides under a theoretical point of view such as the effects of structure in their planarity and some cases with de...
Article
We prepared microporous aramid films through a simple, inexpensive and green way, using ionic liquids (IL) as porosity promoters. Commercial poly(m-phenylene isophthalamide) (MPIA) films with different IL proportions were prepared, and then microporous films were obtained by removing the IL in distilled water. Microporous films presented density va...
Article
The preparation of new monodisperse polycrystalline palladium nanoparticles uniformly distributed on the surface of polymers, by simply adding a palladium(II) solution in water to the polymers, is described. The polymer...
Article
We report the development of new fluorogenic silica nanomaterials that were able to generate fluorescence in the presence of vapours of triacetone triperoxide, TATP, an improvised explosive used in terrorist...
Article
We have developed a fluorogenic perylenediimide functionalized polyacrylate capable to generate color and fluorescence changes in the presence of triacetone triperoxide, TATP, an improvised explosive used in terrorist attacks, under solvent-free, solid state conditions. The material works by accumulating the volatile TATP until it reaches a thresho...
Article
(1)H NMR spectroscopy at 400 MHz in toluene-d8 of evaporated mixtures of lithium ethoxide and titanium(iv) isopropoxide in ethanol, used to prepare the spinel Li4Ti5O12 by the sol-gel method, may help clarify why the atomic ratio 5Li : 5Ti and not 4Li : 5Ti is the right choice to obtain the pure phase when performing hydrolysis at room temperature....
Article
Full-text available
Selected new fluorogenic probes that interact in different ways with Hg2+ and MeHg+ have been prepared and used for the chemical speciation of both cations in aqueous solution as well as in HEK293 cells. The best selective speciation of Hg2+ and MeHg+ has been achieved by in vitro approaches based on fluorogenic probes supported in cultured cells,...
Article
The unexpectedly aqueous stable bis-tellurium cationic complex [Co(dmgH)2{PhTe(CH2)3SO3Na}2]+(1+) (dmgH− = dimethylglyoximate) has been fully characterized in the solid state and in solution. The UV–Vis spectrum of 1+ differs from that of earlier cobaloximes, exhibiting a new low energy band centered at λmax = 425 nm (ε ∼ 26155 dm3 mol−1 cm−1) and...
Data
Coordination of N,N‘ bidentate ligands aryl-pyridin-2-ylmethyl-amine ArNH-CH2-2-C5H4N 1 (Ar = 4-CH3-C6H4, 1a; 4-CH3O-C6H4, 1b; 2,6-(CH3)2-C6H3, 1c; 4-CF3-C6H4, 1d) to the moieties [Ru(bipy)2]2+, [Ru(η5-C5H5)L]+ (L = CH3CN, CO), or [Ru(η6-arene)Cl]2+ (arene = benzene, p-cymene) occurs under diastereoselective or diastereospecific conditions. Detaile...
Article
We report new indene derivatives that are good fluorogenic probes for the cyanide anion, one of which is a highly selective and sensitive fluorogenic probe for the fluorescent detection-as well as reliable quantification-of the cyanide anion in water or buffer, with a 10(3) -fold increase of fluorescence and low detection limit. It is therefore use...
Conference Paper
Full-text available
Dentro del estudio de las interacciones débiles de complejos de metales de transición son reconocidas en la literatura del género dos aproximaciones: el estudio de las mismas en disolución y estado sólido. Con la Tesis Doctoral de Abigail Martínez[1] abordamos tal estudio desde los dos enfoques. En disolución, empleamos entonces la RMN de varios n...
Article
The reactivity of complexes [PdCl2(κ2-NN′)] [NN′ = 2-C5H4N-CH=N-Ar; Ar = 2-MeC6H4, a; 4-MeC6H4, b; 2-MeOC6H4, c; 4-MeOC6H4, d; 4-CF3C6H4, e; 2,6-Me2C6H3, f; 2-iPrC6H4, g] and [Pd(κ2-acac)(κ2-NN′)][BF4] toward the nucleophilic reagent acetylacetonate (acac) has been explored. This reaction starts with nucleophilic attack on the cabonylic atom of the...
Article
A fluorescent probe for ω-aminoacids behaves as a molecular ruler, changing the yellow fluorescent emission into blue as a function of the distance between the terminal ammonium and the carboxylate groups, permitting the quantitative detection of ω-aminoacids, their metabolites and related drugs, such as pregabalin or gabapentin, from pharmaceutica...
Article
The synthesis of some new polysulfur-nitrogen heterocycles by cycloaddition of an ynamine to bisdithiolothiazine ketothiones or dithiones is described and the interconversion between regioisomers is studied by DFT calculations, showing that the double bond isomerizes at room temperature. This series is a new selective and sensitive chromogenic prob...
Article
Square-planar complexes [PdCl{κ2-(RN = CHC6H4PPh2)R′}] (R′ = Cl; R = 4-CH3C6H4, 1a; R = 2-CH3OC6H4, 1b; R = 2-HOC6H4, 1c; R′ = CH3; R = 4-CH3C6H4, 2a; R = 2-CH3OC6H4, 2b; R = 2-HOC6H4, 2c) have been prepared and characterized. In complexes 2a–c only formation of one isomer was observed. The Pd–methyl bond arranges in a cis position to the phosphane...
Article
An organopalladium chemical dosimeter of Hg(2+) that methylates Hg(2+), undergoing a colour change in 1 : 1 ethanol-water with submicromolar sensitivity, gives rise to an aqua-palladium complex that is methylated by MeHg(+) in the presence of a dithiol compound, undergoing another colour change, thus making the system suitable for the naked-eye det...
Data
An organopalladium chemical dosimeter of Hg 2+ that methyl-ates Hg 2+ , undergoing a colour change in 1 : 1 ethanol–water with submicromolar sensitivity, gives rise to an aqua–palladium complex that is methylated by MeHg + in the presence of a dithiol compound, undergoing another colour change, thus mak-ing the system suitable for the naked-eye det...
Article
The reaction of the complex [Pd(κ3-NN′O)CH3] [NN′O = 2-Py-CH=N-(o-C6H4)O–] (1a) with nitromethane affords a mixture of 2a and 2b. In this reaction methylation of the ligand takes place. These complexes display exchange equilibrium in solution. The methylation reaction is proposed to occur through nucleophilic attack of the nitronate anion on the im...
Article
The complexes [MCl(2)(kappa2-N approximately N')] (N approximately N' = 2-C(5)H(4)N-CH2-NHAr; Ar = 4-MeC(6)H(4), a; 2,6-Me(2)C(6)H(3), b; 4-MeOC(6)H(4), c; 4-CF(3)C(6)H(4), d; M = Pd, 1a-d; Pt, 2a-d) have been prepared and fully stereochemically characterized both in the solid state and in solution. Their behavior in DMSO-d6 solution is dependent o...
Article
Coordination of N,N' bidentate ligands aryl-pyridin-2-ylmethyl-amine ArNH-CH2-2-C5H4N 1 (Ar = 4-CH3-C6H4, 1a; 4-CH3O-C6H4, 1b; 2,6-(CH3)2-C6H3, 1c; 4-CF3-C6H4, 1d) to the moieties [Ru(bipy)2]2+, [Ru(eta5-C5H5)L]+ (L = CH3CN, CO), or [Ru(eta6-arene)Cl]2+ (arene = benzene, p-cymene) occurs under diastereoselective or diastereospecific conditions. Det...
Article
Full-text available
The synthesis of N-[4-(2-hydroxyethyl)-1,2,4-oxathiazinan-3-ylidene]-benzamide (2a) and N-[4-(2-hydroxyethyl)-1,2,4-oxathiazinan-3-ylidene]-2-fluorobenzamide (2b) by oxidation of the corre-sponding 1,1-bis(2-hydroxyethyl)-3-aroylthioureas with potassium iodate in aqueous solution is re-ported. Variable temperature 1 H NMR spectra of 2a prove that t...
Article
A phosphorous functionalized isoindole derivative has beenformed in the cyclization reaction of 3-chloro-p-tolylmethylene-1,1-diethylthiourea with lithium diphenylphosphide. The reaction involves thiourea desulfuration and C-S to P-S sulfur transfer.
Article
To determine the trans effect on the rates of reductive eliminations from arylpalladium(II) amido complexes, the reactions of arylpalladium amido complexes bearing symmetrical and unsymmetrical DPPF (DPPF = bis(diphenylphosphino)ferrocene) derivatives were studied. THF solutions of LPd(Ar)(NMeAr') (L = DPPF, DPPF-OMe, DPPF-CF3, DPPF-OMe,Ph, DPPF-Ph...
Article
Carbonylation in dichloromethane at room temperature of the dimeric ortho-palladated complex [Pd{C6H4C(CH3)NNHC6H5}(μ-Cl)]2 yields in a first step the monocarbonyl [Pd{C6H4C(CH3)NNHC6H5}Cl(CO)] which very slowly (days) undergoes in solution reductive elimination of palladium to give high yield of the isoindolinone derivative, 2-anilino-3-methyl...
Article
The syntheses and structures of neutral complexes [PdCl(Py-2-CH=NAr)(Me)] (Ar = 4-MeC<sub>6</sub>H<sub>4</sub>, 4-MeOC<sub>6</sub>H<sub>4</sub>, 4-CF<sub>3</sub>C<sub>6</sub>H<sub>4</sub>) and cationic complexes [Pd(Py-2-CH=NAr)(Me)(MeCN)]SbF<sub>6</sub> (Ar = 4-MeC<sub>6</sub>H<sub>4</sub>, 4-MeOC<sub>6</sub>H<sub>4</sub>, 4-CF<sub>3</sub>C<sub>6<...
Article
Palladium complexes of formula [PdLCl]X (X = Cl 1, BF42) containing the pincer terdentate ligands L [L = 2,6-(ArNHCH2)2C5H3N (Ar = 4-MeC6H41a and 2a, 4-MeOC6H41b and 2b); L = 2,6-(4-MeC6H4NMeCH2)2C5H3N 1c and 2c] have been synthesised as cis–trans diastereomeric mixtures. The chiral nature of both amine arms of the pincer ligands accounts for the m...
Article
The synthesis, electrochemistry, and structural characterization of the mononuclear complex [Pd{C6H4N(H)NC(CH3)C5H4N}(p-tolN−NNp-tol)] (1) containing the monodentate 1,3-di-p-tolyltriazenido ligand is described. Compound 1 is an example of a stable species containing a Pd−N amido bond cis to a Pd−C aryl bond. Kinetic parameters for the dynamic intr...
Article
Palladium(II) amino complexes of formula [PdX2(NC5H4CH2NHAr)] (X = Cl, Ar = 2,6 dimethylphenyl; X = C6F5, Ar = 4-methylphenyl) undergo dehydrogenation reactions with NaOMe under stoichiometric or catalytic conditions to give imino complexes [PdX2(NC5H4CH NAr)] ; the catalytic pathway supports the accepted β-hydrido elimination mechanism in N-...
Article
Chirality is conserved in the deprotonation of the complex PdCl2(La) (La = 2-[(N-p-tolylamino)methyl]pyridine; 1a) leading to the folded diastereomer of [PdCl(μ-La-H)]2 (2a), where the p-tolyl groups are syn exo and the same enantiomer of 1a shapes both halves of the amido-bridged dimer. The dimerization of different enantiomers of 1a (R with S), w...
Article
A molecular orbital study of the Hoppe anions [Fe2O5](6-) and [Co2O4](4-) reveals the existence of metal-oxygen pi bonding in the plane of the molecule. In [Fe2O5](6-) the double-bond character is delocalized throughout the terminal and bridging Fe-O bonds, whereas in [Co2O4](4-) only the terminal Co-O bonds have double-bond character Taking into a...
Article
Full-text available
The tetranuclear complexes [{Pd2(µ-RNNNR)2}2(µ-X)4](R = C6H4Me-p, X = Cl or I), in which two triazenido-bridged dipalladium units are linked by halide bridges to give an S4N4-like Pd4Cl4 core, are novel precursors to redox-active triazenido-bridged derivatives.

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