Α. Tomas

ORCID: 0009-0000-6815-0329
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About
Contact & Profiles
Research Areas
  • Metal complexes synthesis and properties
  • X-ray Diffraction in Crystallography
  • Crystal Structures and Properties
  • Crystallization and Solubility Studies
  • Crystal structures of chemical compounds
  • Magnetism in coordination complexes
  • Crystallography and molecular interactions
  • Chemical synthesis and alkaloids
  • Solid-state spectroscopy and crystallography
  • Asymmetric Synthesis and Catalysis
  • Chemical Synthesis and Analysis
  • Inorganic Chemistry and Materials
  • Metal-Organic Frameworks: Synthesis and Applications
  • Metal-Catalyzed Oxygenation Mechanisms
  • Chalcogenide Semiconductor Thin Films
  • Advanced Synthetic Organic Chemistry
  • Lanthanide and Transition Metal Complexes
  • Iron-based superconductors research
  • Advanced Condensed Matter Physics
  • Synthesis and Catalytic Reactions
  • Sulfur-Based Synthesis Techniques
  • Rare-earth and actinide compounds
  • Organometallic Compounds Synthesis and Characterization
  • Synthesis and Characterization of Heterocyclic Compounds
  • Asymmetric Hydrogenation and Catalysis

Université Paris Cité
2007-2017

Laboratoire de Cristallographie et RMN Biologiques
2007-2017

Centre National de la Recherche Scientifique
2006-2017

Délégation Paris 5
1995-2015

Délégation Paris 6
2014

Sorbonne Paris Cité
2012

École Nationale Supérieure de Chimie de Lille
2007

Laboratoire de Chimie de Coordination
2007

Institut de Chimie des Substances Naturelles
2006

Laboratoire Chimie Electrochimie Moléculaires et Chimie Analytique
2005

The complex of p-sulfonatocalix[4]arene with L-lysine shows a new type intercalation behaviour regard to the achiral hydrophobic bilayer assembly calixarenes, and represents first structural example cationic organic substrate spanning such bilayer.

10.1039/a906546f article EN Chemical Communications 2000-01-01

Rhenium (I)-diselenother (Re-diselenoether) is a water soluble metal-based compound, combining one atom of rhenium and two atoms selenium. This compound has been reported to exhibit marked activities against several solid tumor cell lines. We now disclose an improved synthesis this complex. The Re-diselenoether showed potent inhibitory effect on MDA-MB231 division in vitro, which lasted when the complex was no longer present culture. induced remarkable reduction volume primitive breast...

10.1007/s10637-015-0265-z article EN cc-by Investigational New Drugs 2015-06-25

A Catalunya, la sexualitat infantil és governada de diferents maneres segons l’edat i el gènere. partir l’anàlisi narratives d’infants d’entre tres cinc anys quatre escoles públiques catalanes, emmarcades en projecte SexAFIN, s’han analitzat les percepcions dels infants al voltant l’afectivitat. Emmarcat epistemologies feministes comprensió governança sexualitat, aquest article reflexiona sobre condicionament vigilància comunicativa significacions corporalitat gènere infants, així com...

10.56247/qua.456 article CA cc-by-nc-sa Quaderns de l Institut Català d Antropologia 2025-04-01

Mono-copper enzymes play an important role in biology and their functionality is based on Cu(II)/Cu(I) redox processes. Modeling a mono-nuclear site remains challenge for better understanding of its intrinsic reactivity. The first member third generation calixarene-based mono-copper “funnel” complexes described. ligand calix[6]arene capped by tren unit, hence presenting N 4 coordination confined cavity. Its Cu(II) were characterized electronic EPR spectroscopies. x-ray structure one them...

10.1073/pnas.0500240102 article EN Proceedings of the National Academy of Sciences 2005-05-02

Two new fluorescent zinc complexes 1 and 2 have been synthesized by reaction of the complex TpPh,MeZn(OH) with 7-hydroxy-4-methylcoumarin (MUH) or 7-mercapto-4-methylcoumarin (MUSH). While alcoholato derivative TpPh,MeZn(MU) is not efficient for sensing hydrogen sulfide, thiolato TpPh,MeZn(MUS) a colorimetric "turn-on" fluorescence "turn-off" sensor which shows high selectivity sulfide in presence additional thiols like cysteine glutathione.

10.1039/b907115f article EN Dalton Transactions 2009-01-01

Forme desordonnee: cristallisation dans Fd3m avec a=8,292 A, Z=4; affinement jusqu'a R=0,028 (mesures a 1123 K). ordonnee: P4 3 32 a=8,314 R=0,033 673 Discussion de la distribution cationique les deux cas. Comparaison le compose isomorphe LiAl 5 O 8

10.1107/s0108270183009488 article FR Acta Crystallographica Section C Crystal Structure Communications 1983-12-15

The alkyldisulfanido zinc complexes TpiPr,iPrZn(SSR) and TpPh,MeZn(SSR) where TpiPr,iPr is hydridotris-((3,5-isopropyl)pyrazolyl)borate, TpPh,Me hydridotris-((3-phenyl,5-methyl)pyrazolyl)borate, (SSR) tert-butyldisulfanido or triphenylmethanedisulfanido were synthesized by reaction between the corresponding hydroxo TpZn(OH) synthetic persulfide RSSH. All characterized elemental analysis 1H NMR spectroscopy, representative members of class also structurally characterized. reactivity TpZn(SSR)...

10.1021/ic900238v article EN Inorganic Chemistry 2009-06-10

Abstract New series of acids and hydroxamic linked to five‐membered heterocycles including furan, oxazole, 1,2,4‐ or 1,3,4‐oxadiazole, imidazole were synthesized tested as inhibitors against the Fe II , Co Mn forms E. coli methionine aminopeptidase (MetAP) antibacterial agents wild‐type acrAB strains. 2‐Aryloxazol‐4‐ylcarboxylic appeared potent selective MetAP form, with IC 50 values in micromolar range, whereas 5‐aryloxazol‐2‐ylcarboxylic acid regioisomers...

10.1002/cmdc.201200076 article EN ChemMedChem 2012-04-04

Through use of the reversible protonation an iron(II) complex containing a deprotonated carboxamido moiety, we prepared and fully characterized first hydrogen(sulfido)iron(II) stabilized by intramolecular hydrogen bond, which acts as H(2)S donor in solution.

10.1021/ic300952d article EN Inorganic Chemistry 2012-09-07

Three alpha-mercaptoacyldipeptides differing essentially in the size of their C-terminal residues have been crystallized thermolysin active site. A new mode binding was observed for 3 [HS-CH(CH(2)Ph)CO-Phe-Tyr] and 4 [HS-CH((CH(2))(4)CH(3))CO-Phe-Ala], which mercaptoacyl moieties act as bidentates with Zn-S Zn-O distances 2.3 2.4 A, respectively, side chains fitting S(1), S(1)', S(2)' pockets. Moreover, a distance 3.1 between sulfur atom OE1 Glu(143) suggests that they are H-bonded one these...

10.1021/bi991043z article EN Biochemistry 1999-09-01

The coordination chemistry of Zn in an N3ArOH environment has been explored. ligands are based on calix[6]arenes that present two imidazole arms and amino phenol moiety at the narrow rim. Three different types complexes have characterized. One is dicationic with Zn2+ coordinated to three nitrogen atoms oxygen group calix[6]ligand. This complex very sensitive exogenous coordinating molecules exists as a 5-coordinate species due endo-complexation guest. second monocationic for which...

10.1021/ja053620e article EN Journal of the American Chemical Society 2005-10-01

The reaction of glutaraldehyde with (R)- or (S)-phenylglycinol as the source nitrogen and chirality inductor directly provides spiropiperidine skeleton [Eq. (a)] alkaloids sibirine isonitramine. title compounds are available in a total three four steps, respectively.

10.1002/(sici)1521-3773(19980202)37:1/2<104::aid-anie104>3.0.co;2-k article EN Angewandte Chemie International Edition 1998-02-02
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