Andrea Bencini

University of Florence

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Barbara Valtancoli

University of Florence

323

Claudia Giorgi

University of Florence

207

Carla Bazzicalupi

University of Florence

203

Antonio Bianchi

University of Florence

171

Vito Lippolis

University of Cagliari

111

Dante Gatteschi

University of Florence

108

Piero Paoletti

University of Florence

Alessandra Garau

University of Cagliari

Vieri Fusi

University of Urbino

Enrique García‐España

Parc Científic de la Universitat de València

Cooperative Institutions

University of Florence

256

Centre National de la Recherche Scientifique

National Interuniversity Consortium of Materials Science and Technology

University of Cagliari

Universitat de València

University of Pisa

University of Bologna

Florence (Netherlands)

University of Padua

University of Southampton

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1,10-Dimethyl-1,4,7,10,13,16-hexaazacyclooctadecane L and 1,4,7-trimethyl-1,4,7,10,13,16,19-heptaazacyclohenicosane L1: two new macrocyclic receptors for ATP binding. Synthesis, solution equilibria and the crystal structure of (H₄L)(ClO₄)₄

Journal of the Chemical Society. Perkin transactions II (1994)

Antonio Andrés Carla Bazzicalupi Andrea Bencini Antonio Bianchi Vieri Fusi

The synthesis of two new methylated ligands 1,10-dimethyl-1,4,7,10,13,16-hexaazacyclooctadecane L and 1,4,7-trimethyl-1,4,7,10,13,16,19-heptaazacyclohenicosane L1 is described. Basicity constants and protonation enthalpies of both ligands have been determined by potentiometric and microcalorimetric measurements in 0.15 mol dm–3 NaClO4 at 298.1 K. The protonated forms of these cyclic polyamines bind ATP in solution. The equilibrium constants of the species formed have been determined (0.15 mol dm–3 NaClO4, 298.1 K). The results presented for L and L1 are compared with those previously obtained for the related ligands 1,4,7,10,13,16-hexaazacyclooctadecane, 1,4,7,10,13,16,19-heptaazacyclohenicosane and 1,4,7,13-tetramethyl-1,4,7,10,13,16-hexaazacyclooctadecane. Among these macrocycles Lis a selective receptor for ATP binding.The crystal structure of the compound (H4L)(ClO4)4[space group P21/c, a= 9.257(4), b= 8.600(2). c= 17.990(10)Å, β= 101.74(4)°, V= 1402(1)Å3, Z= 2] shows that the four charged ammonium groups point inside the macrocyclic cavity.

10.1039/p29940002367

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Citations (28)

Thermodynamic, kinetic, and structural study of the ligational properties of the macrobicyclic aza-ligand 4,7,10,17,23-pentamethyl-1,4,7,10,13,17,23-heptaazabicyclo[11.7.5]pentacosane (L1) and of its macrocyclic precursor 1,4,7,13-tetramethyl-1,4,7,10,13,16-hexaazacyclooctadecane (L2). Crystal structure of [Zn(L1)(H2O)](BPh4)2

Inorganic Chemistry (1993)

Andrea Bencini Antonio Bianchi Paolo Dapporto Vieri Fusi Enrique García‐España

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThermodynamic, kinetic, and structural study of the ligational properties of the macrobicyclic aza-ligand 4,7,10,17,23-pentamethyl-1,4,7,10,13,17,23-heptaazabicyclo[11.7.5]pentacosane (L1) and of its macrocyclic precursor 1,4,7,13-tetramethyl-1,4,7,10,13,16-hexaazacyclooctadecane (L2). Crystal structure of [Zn(L1)(H2O)](BPh4)2Andrea Bencini, Antonio Bianchi, Paolo Dapporto, Vieri Fusi, Enrique Garcia-Espana, Mauro Micheloni, Piero Paoletti, Paola Paoli, Agustin Rodriguez, and Barbara ValtancoliCite this: Inorg. Chem. 1993, 32, 12, 2753–2760Publication Date (Print):June 1, 1993Publication History Published online1 May 2002Published inissue 1 June 1993https://pubs.acs.org/doi/10.1021/ic00064a028https://doi.org/10.1021/ic00064a028research-articleACS PublicationsRequest reuse permissionsArticle Views91Altmetric-Citations21LEARN 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 optionsGet e-AlertscloseSupporting Info (1)»Supporting Information Supporting Information Get e-Alerts

10.1021/ic00064a028

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Citations (28)

CCDC 140417: Experimental Crystal Structure Determination

The Cambridge Structural Database (2000)

Carla Bazzicalupi Prasun Bandyopadhyay Andrea Bencini A. Bianchi Claudia Giorgi

An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.

10.5517/cc4q3lj

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ESR spectra of low-symmetry high-spin cobalt(II) complexes. 7. Trigonal-bipyramidal pentakis(picoline N-oxide)cobalt(II) perchlorate

Inorganic Chemistry (1980)

Andrea Bencini Cristiano Benelli Dante Gatteschi Claudia Zanchini

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTESR spectra of low-symmetry high-spin cobalt(II) complexes. 7. Trigonal-bipyramidal pentakis(picoline N-oxide)cobalt(II) perchlorateA. Bencini, C. Benelli, D. Gatteschi, and C. ZanchiniCite this: Inorg. Chem. 1980, 19, 12, 3839–3841Publication Date (Print):December 1, 1980Publication History Published online1 May 2002Published inissue 1 December 1980https://pubs.acs.org/doi/10.1021/ic50214a050https://doi.org/10.1021/ic50214a050research-articleACS PublicationsRequest reuse permissionsArticle Views131Altmetric-Citations14LEARN 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 optionsGet e-Alertsclose Get e-Alerts

Perchlorate

Picoline

10.1021/ic50214a050

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Citations (14)

CCDC 2237484: Experimental Crystal Structure Determination

The Cambridge Structural Database (2023)

Giammarco Maria Romano Matteo Savastano Carla Bazzicalupi Riccardo Chelli Vito Lippolis

10.5517/ccdc.csd.cc2f38xr

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Calculating EPR Spin Hamiltonian Parameters of Transition Metal Complexes

Comments on Inorganic Chemistry (1985)

Andrea Bencini Dante Gatteschi

Abstract EPR spectra have been, and still are, a powerful tool for obtaining indirect information on the nature of the electronic ground state of transition metal complexes.1–3 With relatively little effort it is generally possible to identify the nature of the orbitals which contribute to the ground state, the symmetry of the complex, the extent of derealization of the unpaired electron(s) onto the ligands, the extent of coupling among neighboring paramagnetic centers, etc.

Unpaired electron

Hamiltonian (control theory)

10.1080/02603598508072254

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Citations (5)

CCDC 628838: Experimental Crystal Structure Determination

The Cambridge Structural Database (2007)

M. Carla Aragoni Massimiliano Arca Andrea Bencini Alexander J. Blake Claudia Caltagirone

10.5517/ccp3c37

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Cation and Anion Coordination Chemistry of Palladium(II) with Polyazacycloalkanes. Thermodynamic and Structural Studies

Springer eBooks (1992)

Andrea Bencini Antonio Bianchi Mauro Micheloni P. Paoletti Paolo Dapporto

Orthorhombic crystal system

Monoclinic crystal system

10.1007/978-94-011-2532-1_18

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Citations (2)

A novel synthetic pathway for paracyclophane receptors

Tetrahedron Letters (1994)

Carla Bazzicalupi Andrea Bencini Antonio Bianchi Vieri Fusi Claudia Giorgi

Cyclophane

10.1016/s0040-4039(00)74435-2

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Citations (6)

Coordination features of a terpyridine-containing polyamine receptor. Effect of protonation on the photophysical properties of the complexes

Dalton Transactions (2006)

Carla Bazzicalupi Andrea Bencini Antonio Bianchi L. Borsari Andrea Danesi

The synthesis of the new terpyridine-containing macrocycle 2,6,10,14-tetraaza[15](6,6'')cyclo(2,2':6',2'')terpyridinophane (L) is reported. The ligand contains a tetraamine chain linking the 6,6'' positions of a terpyridine unit. A potentiometric, (1)H NMR, UV-vis spectrophotometric and fluorescence emission study on the basicity properties of in aqueous solutions shows that the first four protonation steps occur on the polyamine chain, while the terpyridine nitrogens are involved in proton binding only in the last protonation step at strongly acidic pH values. Cu(II), Zn(II), Cd(II) and Pb(II) complexation was studied in aqueous solution by means of potentiometric, spectrophotometric and spectrofluorimetric measurements. Cu(II) and Zn(II) can form both mono- and dinuclear complexes in solution, while the larger Cd(II) and Pb(II) give only mononuclear complexes. In the [ML](2+) complexes (M = Zn(II) or Cd(II)) the metal is unequivocally bound to the terpyridine unit. Some amine groups are not coordinated and can quench the fluorescence emission of the terpyridine unit thanks to an electron transfer process. Protonation of the unbound amine groups inhibits the eT process, affording fluorescent [MLH(x)]((2+x)+) complexes.

Terpyridine

10.1039/b609462g

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Citations (15)