R
Rosa M. Claramunt
Researcher at National University of Distance Education
Publications - 455
Citations - 7988
Rosa M. Claramunt is an academic researcher from National University of Distance Education. The author has contributed to research in topics: Tautomer & Nuclear magnetic resonance spectroscopy. The author has an hindex of 41, co-authored 449 publications receiving 7556 citations. Previous affiliations of Rosa M. Claramunt include Saint Petersburg State University & Complutense University of Madrid.
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Journal ArticleDOI
Structure of N,N′-bis(amino acids) in the solid state and in solution. A 13C and 15N CPMAS NMR study
Gema Ballano,Ana I. Jiménez,Carlos Cativiela,Rosa M. Claramunt,Dionisia Sanz,Ibon Alkorta,José Elguero +6 more
TL;DR: Three bis(amino acids) linked by the amino groups have been prepared and structurally characterized and a dynamic situation is observed by CPMAS NMR corresponding to a double proton migration between two proximal tautomers.
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Structure of 3-amino-4,5-dihydropyrazoles in acid media : x-ray structure of 3-amino-1-phenyl-4,5-dihydropyrazol-2-ium picrate and the origin of broad signals in 1h nmr spectroscopy
TL;DR: In this paper, the origin of the broadening of NMR signals in 3-amino-4,5-dihydropyrazoles has been studied in the 1-phenyl series.
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The structure at 150 K of a highly disordered pyrazole: 3-trifluoromethyl-5-(2-thienyl)-pyrazole
Concha Foces-Foces,Swiatoslaw Trofimenko,Concepción López,M. D. Santa Maria,Rosa M. Claramunt,J. Elguero +5 more
TL;DR: The X-ray analysis at 150 K of the title compound, C18H5N2F3S, revealed disorder of the thienyl ring and the CF3 group in the two independent molecules as discussed by the authors.
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A Facile Method to Determine the Absolute Structure of Achiral Molecules: Supramolecular‐Tilt Structures
Rosa M. Tejedor,Santiago Uriel,Sara Graus,Teresa Sierra,Teresa Sierra,José Luis Serrano,Rosa M. Claramunt,Concepción López,Marta Pérez-Torralba,Ibon Alkorta,José Elguero +10 more
TL;DR: The absolute structures of these compounds are determined by using X-ray diffraction with copper radiation at low temperatures and the consistency of this method was confirmed by using (R,R)-2,8-diiodo-4,10-dimethyl-6 H,12H-5,11-methano-dibenzo[b,f]diazocine, Tröger's base, as a chiral compound of known absolute configuration.
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The tautomeric structures of 3(5),3′(5′)-azopyrazole [(E)-1,2-di(1H-pyrazol-3(5)-yl)diazene)]: The combined use of NMR and electronic spectroscopies with DFT calculations
Pablo López-Tarifa,Goar Sánchez-Sanz,Ibon Alkorta,José Elguero,Dionisia Sanz,Almudena Perona,Rosa M. Claramunt +6 more
TL;DR: In this article, an azo derivative of 1H-pyrazole was chosen to study the information obtained from different techniques for determining the structure of a non-crystalline compound in the solid-state and in solution.