Francesco Dallavalle

University of Parma

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A. Braibanti

University of Parma

Enrico Leporati

University of Parma

Rosangela Marchelli

Novel (United States)

Giuseppina Folesani

Istituto Nazionale per l'Assicurazione Contro gli Infortuni sul Lavoro

Matteo Tegoni

University of Parma

Roberto Corradini

University of Parma

E. Fisicaro

University of Parma

Giorgia Mori

University of Sydney

Giovanni Mori

Free University of Bozen-Bolzano

Gianni Galaverna

Mario Negri Institute for Pharmacological Research

Cooperative Institutions

University of Parma

University of Bologna

Industriale Chimica (Italy)

Centre National de la Recherche Scientifique

University of Ferrara

Istituto di Metodologie Chimiche

National Interuniversity Consortium of Materials Science and Technology

University of Cagliari

Institute for the Dynamics of Environmental Processes

University of Padua

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The protonation constant of oxamic acid in aqueous solution and in water-tetrahydrofuran mixture, at different temperatures and ionic strengths

Inorganica Chimica Acta (1970)

A. Braibanti Enrico Leporati Francesco Dallavalle

Tetrahydrofuran

Divalent

10.1016/s0020-1693(00)93343-7

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Citations (6)

Complex formation equilibria of L‐Amino‐Acid amides with copper(II) in aqueous solution

Helvetica Chimica Acta (1989)

Francesco Dallavalle E. Fisicaro Roberto Corradini Rosangela Marchelli

Abstract Protonation and Cu(II) complexation equilibria of L ‐phenyhilaninamide, N 2 ‐methyl‐L‐phenylalaninamide, N 2 , N 2 ‐dimethyl‐L‐phenylalaninamide, L ‐valinamide, and L ‐prolinamide have been studied by potentiometry in aqueous solution. The formation constants of the species observed, CuL 2+ , CuL , CuLH , CuL 2 H and CuL 2 H −2 , are discussed in relation to the structures of the ligands. Possible structures of bisamidato complexes are proposed on the ground of VIS and CD spectra. Since Cu(II) complexes of the present ligands (pH range 6–8) perform chiral resolution of dansyl‐ and unmodified amino acids in HPLC (reversed phase), it is relevant for the investigation of the resolution mechanism to know which are the species potentially involved in the recognition process.

10.1002/hlca.19890720708

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Citations (28)

Synthesis, Solution Thermodynamics, and X‐ray Study of Cu^II [12]Metallacrown‐4 with GABA Hydroxamic Acid: An Unprecedented Crystal Structure of a [12]MC‐4 with a γ‐Aminohydroxamate

Chemistry - A European Journal (2006)

Matteo Tegoni Luca Ferretti Francesco Sansone Maurizio Remelli V. Bertolasi

Abstract The solution equilibria of γ‐aminobutanehydroxamic acid (GABAha) with H + and Cu 2+ were investigated by potentiometry, titration calorimetry, spectrophotometry, NMR spectroscopy, and ESI‐MS. The thermodynamic parameters of the Cu II [12]metallacrown‐4 obtained for GABAha were compared with those of the corresponding complexes of ( S )‐α‐Alaha and β‐Alaha. The stability (−Δ G 0 ) sequence was β‐Alaha≫α‐Alaha>GABAha, whereas the order of formation enthalpies (−Δ H 0 ) was β‐Alaha≫GABAha>α‐Alaha. These data were interpreted on the basis of the dimensions of the chelate rings and the planarity of the metallamacrocycles. The Cu II [12]metallacrown‐4 ([12]MC‐4) complex of GABAha was isolated and its crystal structure, which is the first reported for a [12]MC‐4 of a γ‐aminohydroxamic acid, fully supports the structural features interpreted from the thermodynamic data.

Hydroxamic acid

Planarity testing

10.1002/chem.200601035

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Citations (32)

Vibrations induced by a two-phase parallel flow to a rod bundle: preliminary experiments on the surface tension and gas density effect

Francesco Dallavalle T. Rossini G. Vanoli

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ChemInform Abstract: Complex Formation Equilibria of L‐Amino Acid Amides with Copper(II) in Aqueous Solution.

ChemInform (1990)

Francesco Dallavalle E. Fisicaro Roberto Corradini Rosangela Marchelli

Abstract Protonation and Cu(II) complex formation constants are determined for L‐phenylalaninamide its N‐monomethyl‐ and N,N‐dimethyl derivatives, L‐valinamide and L‐prolinamide.

Complex formation

10.1002/chin.199005068

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Probability, thermodynamics and dispersion space for a statistical model of equilibria in solution. 2. Concentration and temperature moments of partition function

The Journal of Physical Chemistry (1993)

A. Braibanti E. Fisicaro Francesco Dallavalle John D. Lamb John L. Oscarson

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTProbability, thermodynamics and dispersion space for a statistical model of equilibria in solution. 2. Concentration and temperature moments of partition functionA. Braibanti, E. Fisicaro, F. Dallavalle, J. D. Lamb, and J. L. OscarsonCite this: J. Phys. Chem. 1993, 97, 30, 8062–8070Publication Date (Print):July 1, 1993Publication History Published online1 May 2002Published inissue 1 July 1993https://pubs.acs.org/doi/10.1021/j100132a042https://doi.org/10.1021/j100132a042research-articleACS PublicationsRequest reuse permissionsArticle Views101Altmetric-Citations15LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InRedditEmail Other access options Get e-Alerts

10.1021/j100132a042

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Citations (17)

Chirale Kupfer(II)‐Komplexe für die Enantiomerentrennung von DL‐Dansyl‐Aminosäuren durch HPLC

Angewandte Chemie (1985)

Rosangela Marchelli Arnaldo Dossena Giuseppe Casnati Francesco Dallavalle S. Weinstein

Einblick in die Natur der Wechselwirkungen, die bei der chiralen Erkennung wichtig sind , gewähren die Liganden im Kupfer(II)‐Komplex 1 (R=C 6 H 5 CH 2 , (Ch 3 ) 2 CH, CH 3 ;n=2, 3). Die Liganden wurden synthetisiert, um Struktur und Stabilität ihrer Kupfer (II)‐Komplexe mit der Fähigkeit zur Trennung von Dl‐Dansyl‐Aminosäuren korrelieren zu können. magnified image

10.1002/ange.19850970428

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Citations (3)

Chiral separation of amino acids by copper(II) complexes of tetradentate diaminodiamido-type ligands added to the eluent in reversed-phase high-performance liquid chromatography: a ligand exchange mechanism

Journal of Chromatography A (2001)

Gianni Galaverna Roberto Corradini Francesco Dallavalle Giuseppina Folesani Arnaldo Dossena

Diastereomer

Ternary complex

Chirality

10.1016/s0021-9673(01)00909-8

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Citations (42)

Equilibria of aminoethanols with protons and metal(II) ions. Part 3. L-(+)-threo-2-Amino-1-phenylpropane-1,3-diol with protons and copper-(II) in aqueous solution

Journal of the Chemical Society. Dalton transactions (1979)

A. Braibanti Giovanni Mori Francesco Dallavalle

The equilibria of L-(+)-threo-2-amino-1-phenylpropane-1,3-diol [H2L = HO·CH(Ph)·CH(NH2)·CH2OH] with H+ and CuII have been determined potentiometrically at 25 °C and I= 0.1 mol dm–3(K)Cl. The protonation constants are log K1= 12.01 and log K2= 13.22 for the two hydroxyl groups, and log K3= 8.446 for the amine group. With copper(II) the complexes [Cu(H2L)]2+, [Cu(HL)]+, [Cu(HL)2], [Cu(OH)(HL)], and [Cu(HL2)]– are formed. They contain, with the exception of [Cu(H2L)]2+, five-membered chelate rings, with amine nitrogen and hydroxyl oxygen as donor atoms. The crystal structure of the compound [Cu(HL)2(OH2)]·4H2O, obtained from alkaline solutions, confirms this interpretation.

10.1039/dt9790001050

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Citations (4)

Sintesi, Aspetti Strutturali ed Equilibri in Soluzione di Complessi di interesse biologico

M. Biagini Cingi Francesco Bigoli Francesco Dallavalle Maurizio Lanfranchi Enrico Leporati

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