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Kumar Patel D, Domínguez-Martín A, Choquesillo-Lazarte D, González-Pérez JM, Niclós-Gutiérrez J. Synthesis, characterization, and quantum chemical study of cobalt(II) chelates with N-phenethyl-iminodiacetate(2-)-like ligands. Influence of p-( R)-phenethyl group on crystal pattern. J COORD CHEM 2022. [DOI: 10.1080/00958972.2022.2140407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Dheerendra Kumar Patel
- Department of Inorganic Chemistry, Faculty of Pharmacy, University of Granada, Granada, Spain
| | - Alicia Domínguez-Martín
- Department of Inorganic Chemistry, Faculty of Pharmacy, University of Granada, Granada, Spain
| | | | | | - Juan Niclós-Gutiérrez
- Department of Inorganic Chemistry, Faculty of Pharmacy, University of Granada, Granada, Spain
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Dicopper(II)-EDTA Chelate as a Bicephalic Receptor Model for a Synthetic Adenine Nucleoside. Pharmaceuticals (Basel) 2021; 14:ph14050426. [PMID: 34063288 PMCID: PMC8147406 DOI: 10.3390/ph14050426] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Revised: 04/28/2021] [Accepted: 04/29/2021] [Indexed: 11/17/2022] Open
Abstract
In the extensive field of metal ions, their interactions with nucleic acids, and their constituents, the main aim of this work is to develop a metal chelate suitable to recognize two molecules of an adenine nucleoside. For this purpose, the dinuclear chelate Cu2 (µ-EDTA) (ethylenediaminetetraacetate(4-) ion (EDTA)) is chosen as a bicephalic receptor model for N9-(2-hydroxyethyl)adenine (9heade). A one-pot synthesis is reported to obtain the compound [Cu2(µ2-EDTA)(9heade)2(H2O)4]·3H2O, which has been characterized by single-crystal X-ray diffraction and various spectral, thermal, and magnetic methods. The complex unit is a centro-symmetric molecule, where each Cu (II) center is chelated by a half-EDTA, and is further surrounded by an N7-dentate 9heade nucleoside and two non-equivalent trans-O-aqua molecules. The metal chelate-nucleoside molecular recognition is referred to as an efficient cooperation between the Cu-N7(9heade) coordination bond and a (9heade)N6-H···O(carboxyl, EDTA) interligand interaction. Theoretical calculations are also made to account for the relevance of this interaction. The extreme weakness with which each water molecule binds to the metal center disturbs the thermal stability and the infrared (FT-IR) and electron spin resonance (ESR) spectra of the compound.
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Anion–Cation Recognition Pattern, Thermal Stability and DFT-Calculations in the Crystal Structure of H2dap[Cd(HEDTA)(H2O)] Salt (H2dap = H2(N3,N7)-2,6-Diaminopurinium Cation). CRYSTALS 2020. [DOI: 10.3390/cryst10040304] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The proton transfer between equimolar amounts of [Cd(H2EDTA)(H2O)] and 2,6-diaminopurine (Hdap) yielded crystals of the out-of-sphere metal complex H2(N3,N7)dap[Cd(HEDTA)(H2O)]·H2O (1) that was studied by single-crystal X-ray diffraction, thermogravimetry, FT-IR spectroscopy, density functional theory (DFT) and quantum theory of “atoms-in-molecules” (QTAIM) methods. The crystal was mainly dominated by H-bonds, favored by the observed tautomer of the 2,6-diaminopurinium(1+) cation. Each chelate anion was H-bonded to three neighboring cations; two of them were also connected by a symmetry-related anti-parallel π,π-staking interaction. Our results are in clear contrast with that previously reported for H2(N1,N9)ade [Cu(HEDTA)(H2O)]·2H2O (EGOWIG in Cambridge Structural Database (CSD), Hade = adenine), in which H-bonds and π,π-stacking played relevant roles in the anion–cation interaction and the recognition between two pairs of ions, respectively. Factors contributing in such remarkable differences are discussed on the basis of the additional presence of the exocyclic 2-amino group in 2,6-diaminopurinium(1+) ion.
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Synthesis and HSA-interaction of a new mixed ligand Cu-isothiosemicarbazonato complex with adenine nucleobase. Polyhedron 2020. [DOI: 10.1016/j.poly.2020.114357] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Bruno R, Marino N, Adduci R, Armentano D, De Munno G. Cu(II) complexes of cytosine and 1-methylcytosine with bromide: old motifs and new structures. J COORD CHEM 2018. [DOI: 10.1080/00958972.2018.1441406] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Rosaria Bruno
- Dipartimento di Chimica e Tecnologie Chimiche, Università della Calabria, Cosenza, Italy
| | - Nadia Marino
- Dipartimento di Chimica e Tecnologie Chimiche, Università della Calabria, Cosenza, Italy
| | - Rosanna Adduci
- Dipartimento di Chimica e Tecnologie Chimiche, Università della Calabria, Cosenza, Italy
| | - Donatella Armentano
- Dipartimento di Chimica e Tecnologie Chimiche, Università della Calabria, Cosenza, Italy
| | - Giovanni De Munno
- Dipartimento di Chimica e Tecnologie Chimiche, Università della Calabria, Cosenza, Italy
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Gładysiak A, Nguyen TN, Anderson SL, Boyd PG, Palgrave RG, Bacsa J, Smit B, Rosseinsky MJ, Stylianou KC. Shedding Light on the Protonation States and Location of Protonated N Atoms of Adenine in Metal-Organic Frameworks. Inorg Chem 2018; 57:1888-1900. [PMID: 29389124 PMCID: PMC6194650 DOI: 10.1021/acs.inorgchem.7b02761] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
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We report the syntheses
and structures of five metal–organic frameworks (MOFs) based
on transition metals (NiII, CuII, and ZnII), adenine, and di-, tri-, and tetra-carboxylate ligands.
Adenine, with multiple N donor sites, was found to coordinate to the
metal centers in different binding modes including bidentate (through
N7 and N9, or N3 and N9) and tridentate (through N3, N7, and N9).
Systematic investigations of the protonation states of adenine in
each MOF structure via X-ray photoelectron spectroscopy revealed that
adenine can be selectively protonated through N1, N3, or N7. The positions
of H atoms connected to the N atoms were found from the electron density
maps, and further supported by the study of C–N–C bond
angles compared to the literature reports. DFT calculations were performed
to geometrically optimize and energetically assess the structures
simulated with different protonation modes. The present study highlights
the rich coordination chemistry of adenine and provides a method for
the determination of its protonation states and the location of protonated
N atoms of adenine within MOFs, a task that would be challenging in
complicated adenine-based MOF structures. The protonation states and positions of hydrogen atoms in five adenine-based
metal−organic frameworks were revealed using geometrical studies
based on single-crystal XRD data supported by XPS spectra and DFT
calculations.
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Affiliation(s)
- Andrzej Gładysiak
- Laboratory of Molecular Simulation (LSMO), Institut des Sciences et Ingénierie Chimiques (ISIC), École Polytechnique Fédérale de Lausanne (EPFL Valais Wallis) , Rue de l'Industrie 17, CH-1951 Sion, Switzerland
| | - Tu N Nguyen
- Laboratory of Molecular Simulation (LSMO), Institut des Sciences et Ingénierie Chimiques (ISIC), École Polytechnique Fédérale de Lausanne (EPFL Valais Wallis) , Rue de l'Industrie 17, CH-1951 Sion, Switzerland
| | - Samantha L Anderson
- Laboratory of Molecular Simulation (LSMO), Institut des Sciences et Ingénierie Chimiques (ISIC), École Polytechnique Fédérale de Lausanne (EPFL Valais Wallis) , Rue de l'Industrie 17, CH-1951 Sion, Switzerland
| | - Peter G Boyd
- Laboratory of Molecular Simulation (LSMO), Institut des Sciences et Ingénierie Chimiques (ISIC), École Polytechnique Fédérale de Lausanne (EPFL Valais Wallis) , Rue de l'Industrie 17, CH-1951 Sion, Switzerland
| | - Robert G Palgrave
- University College London , Department of Chemistry, 20 Gordon St., London WC1H 0AJ, U.K
| | - John Bacsa
- Department of Chemistry, Emory University , Atlanta, Georgia 30322, United States
| | - Berend Smit
- Laboratory of Molecular Simulation (LSMO), Institut des Sciences et Ingénierie Chimiques (ISIC), École Polytechnique Fédérale de Lausanne (EPFL Valais Wallis) , Rue de l'Industrie 17, CH-1951 Sion, Switzerland
| | - Matthew J Rosseinsky
- Department of Chemistry, University of Liverpool , Crown Street, Liverpool, L69 7ZD, U.K
| | - Kyriakos C Stylianou
- Laboratory of Molecular Simulation (LSMO), Institut des Sciences et Ingénierie Chimiques (ISIC), École Polytechnique Fédérale de Lausanne (EPFL Valais Wallis) , Rue de l'Industrie 17, CH-1951 Sion, Switzerland
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Kumar J, Pratibha, Verma S. Crystallographic signatures of silver-purine frameworks with an azide functionality. Inorganica Chim Acta 2016. [DOI: 10.1016/j.ica.2016.03.016] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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9
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Marino N, Armentano D, De Munno G. Cytosine and 1-methylcytosine Mg(II) complexes: Structural insights on the reactivity of magnesium(II) toward nucleic acid constituents. Inorganica Chim Acta 2016. [DOI: 10.1016/j.ica.2016.02.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Puentes R, Torres J, Kremer C, Cano J, Lloret F, Capucci D, Bacchi A. Mononuclear and polynuclear complexes ligated by an iminodiacetic acid derivative: synthesis, structure, solution studies and magnetic properties. Dalton Trans 2016; 45:5356-73. [DOI: 10.1039/c5dt05060j] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two novel families of coordination polymers, [Ln(bzlida)(Hbzlida)]·H2O (Ln = La, Nd) and [Ln2(bzlida)3]·3H2O (Ln = Nd, Sm, Eu, Gd) were prepared by hydrothermal reaction of Ln2O3 with benzyliminodiacetic acid.
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Affiliation(s)
- Roberto Puentes
- Cátedra de Química Inorgánica
- Departamento Estrella Campos
- Facultad de Química
- Universidad de la República
- Montevideo
| | - Julia Torres
- Cátedra de Química Inorgánica
- Departamento Estrella Campos
- Facultad de Química
- Universidad de la República
- Montevideo
| | - Carlos Kremer
- Cátedra de Química Inorgánica
- Departamento Estrella Campos
- Facultad de Química
- Universidad de la República
- Montevideo
| | - Joan Cano
- Instituto de Ciencia Molecular
- Universidad de Valencia
- E-46980 Paterna
- Spain
- Fundació General de la Universitat de València (FGUV)
| | - Francesc Lloret
- Instituto de Ciencia Molecular
- Universidad de Valencia
- E-46980 Paterna
- Spain
| | - Davide Capucci
- Dipartimento di Chimica
- Università di Parma
- 43124 Parma
- Italy
| | - Alessia Bacchi
- Dipartimento di Chimica
- Università di Parma
- 43124 Parma
- Italy
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An J, Geib SJ, Kim MG. Design, Synthesis, and Characterization of 0-D, 1-D, and 2-D Zinc-Adeninate Coordination Assemblies. B KOREAN CHEM SOC 2015. [DOI: 10.1002/bkcs.10382] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Jihyun An
- Department of Chemistry Education; Seoul National University; Seoul 151-748 Republic of Korea
| | - Steven J. Geib
- Department of Chemistry; University of Pittsburgh; Pittsburgh PA 15260 USA
| | - Myung-Gil Kim
- Department of Chemistry; Chung-Ang University; Seoul 156-756 Republic of Korea
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González-Pérez JM, Choquesillo-Lazarte D, Domínguez-Martín A, El Bakkali H, García-Rubiño ME, Pérez-Toro I, Vílchez-Rodríguez E, Castiñeiras A, Nurchi VM, Niclós-Gutiérrez J. Molecular recognition between adenine or 2,6-diaminopurine and copper(II) chelates with N,O2,S-tripodal tetradentate chelators having thioether or disulfide donor groups. J Inorg Biochem 2015; 151:75-86. [PMID: 26190672 DOI: 10.1016/j.jinorgbio.2015.05.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2015] [Revised: 05/26/2015] [Accepted: 05/29/2015] [Indexed: 11/18/2022]
Abstract
Five novel ternary copper(II) complexes with the N,O2,S-tripodal tetradentate chelators N,N-bis(carboxymethyl)-S-benzylcysteaminate(2-) ion (BCBC) or N,N,N',N'-tetrakis(carboxymethyl)cystaminate(4-) ion (TCC) and adenine (Hade), 2,6-diaminopurine (Hdap), 2,2'-bipyridine (bpy) or 1,10-phenanthroline (phen) as co-ligand were synthesized and characterized by X-ray diffraction and other physical methods: [Cu2(BCBC)2(μ2-N3,N7-H(N9)ade)(H2O)2]·H2O (1), [Cu2(BCBC)2(μ2-N7,N9-H(N3)dap)(H2O)2]·4H2O (2), [Cu2(μ2-TCC)(H(N9)ade)2(H2O)2]·10H2O (3), [Cu2(μ2-TCC)(bpy)2]·15H2O (4) and [Cu2(μ2-TCC)(phen)2]·14H2O (5). The crystal structure of H4TCC·3H2O was also determined. All ternary Cu(II) complexes have molecular structures. The N-(2-mercaptoethyl)-iminodiacetate moieties of BCBC or TCC ligands play a NO2+S-tripodal tetradentate role, with the S-(thioether or disulfide) atom as the apical/distal donor of the copper(II) center. In 1-3, the iminodiacetate moiety exhibits a mer-NO2 conformation (two nearly coplanar chelate rings) while in 4 and 5 (with bpy or phen as coligand) it displays a fac-NO+O (apical/distal) conformation. We conclude that the formation of the Cu-S(thioether or disulfide) bonds is strongly favored by the N-branched topology of the S-ligands in the reported compounds.
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Affiliation(s)
| | - Duane Choquesillo-Lazarte
- Laboratorio de Estudios Cristalográficos, IACT, CSIC-University of Granada, Avenida de las Palmeras 4, Armilla 18100 Granada, Spain
| | - Alicia Domínguez-Martín
- Department of Inorganic Chemistry, Faculty of Pharmacy, University of Granada, 18071 Granada, Spain.
| | - Hanan El Bakkali
- Department of Inorganic Chemistry, Faculty of Pharmacy, University of Granada, 18071 Granada, Spain
| | - María Eugenia García-Rubiño
- Department of Organic and Pharmaceutical Chemistry, Faculty of Pharmacy, University of Granada, 18071 Granada, Spain
| | - Inmaculada Pérez-Toro
- Department of Inorganic Chemistry, Faculty of Pharmacy, University of Granada, 18071 Granada, Spain
| | - Ester Vílchez-Rodríguez
- Department of Inorganic Chemistry, Faculty of Pharmacy, University of Granada, 18071 Granada, Spain
| | - Alfonso Castiñeiras
- Department of Inorganic Chemistry, Faculty of Pharmacy, University of Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Valeria Marina Nurchi
- Dipartimento di Scienze Chimiche e Geologiche, Università di Cagliari, Cittadela Universitaria, 09042 Monserrato, CA, Italy
| | - Juan Niclós-Gutiérrez
- Department of Inorganic Chemistry, Faculty of Pharmacy, University of Granada, 18071 Granada, Spain
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Marino N, Armentano D, Zanchini C, De Munno G. Ca2+ metal ion adducts with cytosine, cytidine and cytidine 5′-monophosphate: a comprehensive study of calcium reactivity towards building units of nucleic acids. CrystEngComm 2014. [DOI: 10.1039/c4ce00511b] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Six new Ca(ii) adducts with cytosine (cyt), cytidine (H2cyd) and cytidine 5′-monophosphate (CMP) are presented. H2cyd and CMP show unprecedented binding sites for the calcium ion.
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Affiliation(s)
- Nadia Marino
- Dipartimento di Chimica e Tecnologie Chimiche
- Università della Calabria
- Rende, Italy
| | - Donatella Armentano
- Dipartimento di Chimica e Tecnologie Chimiche
- Università della Calabria
- Rende, Italy
| | - Claudia Zanchini
- Dipartimento di Chimica e Tecnologie Chimiche
- Università della Calabria
- Rende, Italy
| | - Giovanni De Munno
- Dipartimento di Chimica e Tecnologie Chimiche
- Università della Calabria
- Rende, Italy
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Investigation of Ag(I) complexes involving 6-(benzylamino)purine derivatives. MONATSHEFTE FUR CHEMIE 2013. [DOI: 10.1007/s00706-013-1078-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Domínguez-Martín A, Choquesillo-Lazarte D, Dobado JA, Vidal I, Lezama L, González-Pérez JM, Castiñeiras A, Niclós-Gutiérrez J. From 7-azaindole to adenine: molecular recognition aspects on mixed-ligand Cu(II) complexes with deaza-adenine ligands. Dalton Trans 2013; 42:6119-30. [PMID: 23324859 DOI: 10.1039/c2dt32191b] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
For a better understanding of the versatile behaviour of adenine as a ligand, a series of 10 ternary copper(II) complexes with deaza-adenine ligands [7-azaindole (1,6,7-trideaza-adenine, H7azain), 4-azabenzimidazole (1,6-dideaza-adenine, H4abim), 5-azabenzimidazole (3,6-dideaza-adenine, H5abim), and 7-deaza-adenine (H7deaA)] have been synthesised and characterised by X-ray diffraction. Likewise, all the compounds studied have been analysed by spectral and thermal methods. The proton tautomers and donor capabilities of the above-mentioned deaza-adenine ligands have been calculated by DFT. We conclude that the increasing presence of N-donors in deaza-adenine ligands favours the proton tautomerism and their versatility as co-ligands. Notably, H7azain consistently uses the same tautomer, H4abim uses two different tautomers but is not protonated by the pentadentate H(2)EDTA(2-) ligand, and H(N1)5abim displays the μ(2)-N7,N9 mode, whereas H(N9)7deaA binds Cu(II) by N3 in cooperation with an intra-molecular N9-H···O interaction or using the unprecedented bidentate μ(2)-N1,N3 bridging mode.
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Affiliation(s)
- Alicia Domínguez-Martín
- Department of Inorganic Chemistry, Faculty of Pharmacy, University of Granada, Campus Cartuja s/n, 18071 Granada, Spain.
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Unravelling the versatile metal binding modes of adenine: Looking at the molecular recognition patterns of deaza- and aza-adenines in mixed ligand metal complexes. Coord Chem Rev 2013. [DOI: 10.1016/j.ccr.2013.03.029] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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17
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Molecular recognition modes between adenine or adeniniun(1+) ion and binary MII(pdc) chelates (MCoZn; pdc=pyridine-2,6-dicarboxylate(2-) ion). J Inorg Biochem 2013; 127:211-9. [DOI: 10.1016/j.jinorgbio.2013.06.008] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2012] [Revised: 06/15/2013] [Accepted: 06/15/2013] [Indexed: 11/19/2022]
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18
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Metal–carboxylato–nucleobase systems: From supramolecular assemblies to 3D porous materials. Coord Chem Rev 2013. [DOI: 10.1016/j.ccr.2013.03.011] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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19
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Domínguez-Martín A, García-Raso A, Cabot C, Choquesillo-Lazarte D, Pérez-Toro I, Matilla-Hernández A, Castiñeiras A, Niclós-Gutiérrez J. Structural insights on the molecular recognition patterns between N(6)-substituted adenines and N-(aryl-methyl)iminodiacetate copper(II) chelates. J Inorg Biochem 2013; 127:141-9. [PMID: 23490423 DOI: 10.1016/j.jinorgbio.2013.02.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2012] [Revised: 02/07/2013] [Accepted: 02/08/2013] [Indexed: 10/27/2022]
Abstract
For a better understanding of the metal binding pattern of N(6)-substituted adenines, six novel ternary Cu(II) complexes have been structurally characterized by single crystal X-ray diffraction: [Cu(NBzIDA)(HCy5ade)(H2O)]·H2O (1), [Cu(NBzIDA)(HCy6ade)(H2O)]·H2O (2), [Cu(FurIDA)(HCy6ade)(H2O)]·H2O (3), [Cu(MEBIDA)(HBAP)(H2O)]·H2O (4), [Cu(FurIDA)(HBAP)]n (5) and {[Cu(NBzIDA)(HdimAP)]·H2O}n (6). In these compounds NBzIDA, FurIDA and MEBIDA are N-substituted iminodiacetates with a non-coordinating aryl-methyl pendant arm (benzyl in NBzIDA, p-tolyl in MEBIDA and furfuryl in FurIDA) whereas HBAP, HCy5ade, HCy6ade and HdimAP are N(6)-substituted adenine derivatives with a N-benzyl, N-cyclopentyl, N-cyclohexyl or two N-methyl groups, respectively. Regardless of the molecular (1-4) or polymeric (5-6) nature of the studied compounds, the Cu(II) centre exhibits a type 4+1 coordination where the tridentate IDA-like chelators adopt a mer-conformation. In 1-5 the N(6)-R-adenines use their most stable tautomer H(N9)adenine-like, and molecular recognition consists of the cooperation of the CuN3(purine) bond and the intra-molecular interligand N9H···O(coordinated carboxy) interaction. In contrast, N(6),N(6)-dimethyl-adenine shows the rare tautomer H(N3)dimAP in 6, so that the molecular recognition with the Cu(NBzIDA) chelate consist of the CuN9 bond and the N3H···O intra-molecular interligand interaction. Contrastingly to the cytokinin activity found in the free ligands HBAP (natural cytokinin), HCy5ade and HCy6ade, the corresponding Cu(II) ternary complexes did not show any activity.
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Affiliation(s)
- Alicia Domínguez-Martín
- Department of Inorganic Chemistry, Faculty of Pharmacy, Campus Cartuja, University of Granada, E-18071 Granada, Spain.
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Smrečki N, Kukovec BM, Đaković M, Popović Z. Nickel(II) complexes with N-aralkyliminodiacetic acids: Preparation, spectroscopic, structural and thermal characterization. Inorganica Chim Acta 2013. [DOI: 10.1016/j.ica.2013.02.017] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Ou D, Zhang L, Huang Y, Lou X, Qin J, Li Z. A New Disubstituted Polyacetylene Bearing 6-Benzylaminopurine Moieties: Postfunctional Synthetic Strategy and Sensitive Chemosensor Towards Copper and Cobalt Ions. Macromol Rapid Commun 2013; 34:759-66. [DOI: 10.1002/marc.201200700] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2012] [Revised: 11/28/2012] [Indexed: 11/09/2022]
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Chen J, Sheng T, Hu S, Xiang S, Fu R, Zhu Q, Wu X. Homochiral coordination polymers constructed from aminocarboxylate derivates: Effect of bipyridine on the amidation reaction. J SOLID STATE CHEM 2012. [DOI: 10.1016/j.jssc.2012.04.025] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Patel DK, Domínguez-Martín A, Brandi-Blanco MDP, Choquesillo-Lazarte D, Nurchi VM, Niclós-Gutiérrez J. Metal ion binding modes of hypoxanthine and xanthine versus the versatile behaviour of adenine. Coord Chem Rev 2012. [DOI: 10.1016/j.ccr.2011.05.014] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Patel DK, Choquesillo-Lazarte D, Domínguez-Martín A, Brandi-Blanco MP, González-Pérez JM, Castiñeiras A, Niclós-Gutiérrez J. Chelating Ligand Conformation Driving the Hypoxanthine Metal Binding Patterns. Inorg Chem 2011; 50:10549-51. [DOI: 10.1021/ic201918y] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Dheerendra K. Patel
- Department of Inorganic Chemistry, Faculty of Pharmacy, University of Granada, 18071 Granada, Spain
| | - Duane Choquesillo-Lazarte
- Laboratorio de Estudios Cristalográgficos, IACT, CSIC-Universidad de Granada, Avenida de las Palmeras 4, 18100 Armilla, Granada, Spain
| | - Alicia Domínguez-Martín
- Department of Inorganic Chemistry, Faculty of Pharmacy, University of Granada, 18071 Granada, Spain
| | - M. Pilar Brandi-Blanco
- Department of Inorganic Chemistry, Faculty of Pharmacy, University of Granada, 18071 Granada, Spain
| | | | - Alfonso Castiñeiras
- Department of Inorganic Chemistry, Faculty of Pharmacy, University of Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Juan Niclós-Gutiérrez
- Department of Inorganic Chemistry, Faculty of Pharmacy, University of Granada, 18071 Granada, Spain
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Domínguez-Martín A, Choquesillo-Lazarte D, González-Pérez JM, Castiñeiras A, Niclós-Gutiérrez J. Molecular recognition patterns of 2-aminopurine versus adenine: a view through ternary copper(II) complexes. J Inorg Biochem 2011; 105:1073-80. [PMID: 21726770 DOI: 10.1016/j.jinorgbio.2011.05.009] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2011] [Revised: 05/11/2011] [Accepted: 05/18/2011] [Indexed: 11/19/2022]
Abstract
In contrast to the comprehensive structural information about metal complexes with adenine, the corresponding to its isomer 2-aminopurine (H2AP) is extremely poor. With the aim to rationalize the metal binding pattern of H2AP, we report the molecular and/or crystal structure of four novel compounds with various iminodiacetate-like (IDA-like) copper(II) chelates: [Cu(IDA)(H2AP)(H2O)]·H2O (1), [Cu(MIDA)(H2AP)(H2O)]·3H2O (2), {[Cu(NBzIDA)(H2AP)]·1.5H2O}n (3) and [Cu(MEBIDA)(H2AP)(H2O)]·3.5 H2O (4), where IDA, MIDA, NBzIDA and MEBIDA are R=H, CH3, benzyl- and p-tolyl- in R-N-(CH2-COO-)2 ligands, respectively. Synthesis strategies include direct reactions of copper(II) chelates with H2AP (alone, for 1 and 3) and/or with the base pairs H2AP:thymine (1-4) or H2AP:cytosine (3). Moreover, these compounds have been also investigated by spectral and thermal methods. Regardless of the N-derivative of the IDA chelator, molecular recognition between H2AP and the referred Cu(II)-chelates only displays the formation of the Cu-N7(purine-like) bond what is clearly in contrast to what was previously reported for adenine. The metal binding pattern of 2-aminopurine is discussed on the basis of the electronic effects and steric hindrance of the 2-amino exocyclic group.
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Affiliation(s)
- Alicia Domínguez-Martín
- Department of Inorganic Chemistry, Faculty of Pharmacy, Campus Cartuja, University of Granada, E-18071 Granada, Spain.
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Brandi-Blanco MDP, Choquesillo-Lazarte D, Domínguez-Martín A, González-Pérez JM, Castiñeiras A, Niclós-Gutiérrez J. Metal ion binding patterns of acyclovir: Molecular recognition between this antiviral agent and copper(II) chelates with iminodiacetate or glycylglycinate. J Inorg Biochem 2011; 105:616-23. [DOI: 10.1016/j.jinorgbio.2011.02.001] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2010] [Revised: 02/02/2011] [Accepted: 02/03/2011] [Indexed: 11/29/2022]
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Imaz I, Rubio-Martínez M, An J, Solé-Font I, Rosi NL, Maspoch D. Metal–biomolecule frameworks (MBioFs). Chem Commun (Camb) 2011; 47:7287-302. [DOI: 10.1039/c1cc11202c] [Citation(s) in RCA: 326] [Impact Index Per Article: 25.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Das B, Boudalis AK, Baruah JB. Selective adenine/cytosine cations in one-dimensional coordination polymers of manganese (II) and copper (II) 2,3-pyridinedicarboxylates. INORG CHEM COMMUN 2010. [DOI: 10.1016/j.inoche.2010.06.052] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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29
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Klanicová A, Trávníček Z, Vančo J, Popa I, Šindelář Z. Dinuclear copper(II) perchlorate complexes with 6-(benzylamino)purine derivatives: Synthesis, X-ray structure, magnetism and antiradical activity. Polyhedron 2010. [DOI: 10.1016/j.poly.2010.06.007] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Mishra AK, Verma S. Interconnected Trimeric, Pentameric, and Hexameric Metallacycles in a Singular Silver−Adenine Framework. Inorg Chem 2010; 49:8012-6. [DOI: 10.1021/ic1010902] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Ashutosh Kumar Mishra
- Department of Chemistry, Indian Institute of Technology (IIT) Kanpur, Kanpur 208016, India
| | - Sandeep Verma
- Department of Chemistry, Indian Institute of Technology (IIT) Kanpur, Kanpur 208016, India
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31
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Metal ion interactions with nucleobases in the tetradentate 1,4,7,10-tetraazacyclododecane (cyclen)-ligand system: Crystal structures of [Cu(cyclen)(adeninato)]·ClO4·2H2O, [{Cu(cyclen)}2(hypoxanthinato)]·(ClO4)3, [Cu(cyclen)(theophyllinato)]3·(ClO4)3·2H2O, and [Cu(cyclen)(xanthinato)]·(0.7ClO4)·(0.3ClO4)·3H2O·(0.5H2O)3. J Mol Struct 2010. [DOI: 10.1016/j.molstruc.2009.12.014] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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32
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Patel D, Choquesillo-Lazarte D, González-Pérez J, Domínguez-Martín A, Matilla-Hernandez A, Castiñeiras A, Niclós-Gutiérrez J. Nickel(II) derivatives of N-benzyliminodiacetate(2−) ligands, with and without imidazole: Synthesis, crystal structure and properties. Polyhedron 2010. [DOI: 10.1016/j.poly.2009.09.034] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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33
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Choquesillo-Lazarte D, Domínguez-Martín A, Matilla-Hernández A, Sánchez de Medina-Revilla C, González-Pérez JM, Castiñeiras A, Niclós-Gutiérrez J. Restricting the versatile metal-binding behaviour of adenine by using deaza-purine ligands in mixed-ligand copper(II) complexes. Polyhedron 2010. [DOI: 10.1016/j.poly.2009.06.054] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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34
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Pérez-Yáñez S, Castillo O, Cepeda J, García-Terán JP, Luque A, Román P. Analysis of the Interaction between Adenine Nucleobase and Metal-Malonato Complexes. Eur J Inorg Chem 2009. [DOI: 10.1002/ejic.200900124] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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35
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Affiliation(s)
- Jitendra Kumar
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016 (UP), India
| | - Sandeep Verma
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016 (UP), India
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An J, Fiorella RP, Geib SJ, Rosi NL. Synthesis, Structure, Assembly, and Modulation of the CO2 Adsorption Properties of a Zinc-Adeninate Macrocycle. J Am Chem Soc 2009; 131:8401-3. [DOI: 10.1021/ja901869m] [Citation(s) in RCA: 145] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jihyun An
- Department of Chemistry, University of Pittsburgh, 219 Parkman Avenue, Pittsburgh, Pennsylvania 15260
| | - Richard P. Fiorella
- Department of Chemistry, University of Pittsburgh, 219 Parkman Avenue, Pittsburgh, Pennsylvania 15260
| | - Steven J. Geib
- Department of Chemistry, University of Pittsburgh, 219 Parkman Avenue, Pittsburgh, Pennsylvania 15260
| | - Nathaniel L. Rosi
- Department of Chemistry, University of Pittsburgh, 219 Parkman Avenue, Pittsburgh, Pennsylvania 15260
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Yang EC, Zhao HK, Feng Y, Zhao XJ. A Tetranuclear CuII-Based 2D Aggregate with an Unprecedented Tetradentate μ4-N1,N3,N7,N9-Adeninate Nucleobase. Inorg Chem 2009; 48:3511-3. [DOI: 10.1021/ic900113e] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- En-Cui Yang
- College of Chemistry and Life Science, Tianjin Key Laboratory of Structure and Performance for Functional Molecule, Tianjin Normal University, Tianjin 300387, People’s Republic of China
| | - Hong-Kun Zhao
- College of Chemistry and Life Science, Tianjin Key Laboratory of Structure and Performance for Functional Molecule, Tianjin Normal University, Tianjin 300387, People’s Republic of China
| | - Yan Feng
- College of Chemistry and Life Science, Tianjin Key Laboratory of Structure and Performance for Functional Molecule, Tianjin Normal University, Tianjin 300387, People’s Republic of China
| | - Xiao-Jun Zhao
- College of Chemistry and Life Science, Tianjin Key Laboratory of Structure and Performance for Functional Molecule, Tianjin Normal University, Tianjin 300387, People’s Republic of China
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38
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Lippert B, Gupta D. Promotion of rare nucleobase tautomers by metal binding. Dalton Trans 2009:4619-34. [DOI: 10.1039/b823087k] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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39
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Choquesillo-Lazarte D, Brandi-Blanco MDP, García-Santos I, González-Pérez JM, Castiñeiras A, Niclós-Gutiérrez J. Interligand interactions involved in the molecular recognition between copper(II) complexes and adenine or related purines. Coord Chem Rev 2008. [DOI: 10.1016/j.ccr.2007.09.018] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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40
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A Structural Study of the Iminodiacetate Moiety Conformation in N-(1-adamantyl)-iminodiacetate(2-) Copper(II) Complexes. Z Anorg Allg Chem 2007. [DOI: 10.1002/zaac.200700364] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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41
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Metal–nucleobase interactions in magnesium(II) and manganese(II) complexes with adenine: Influence of the anion on the non-covalent stabilization of 7H-adenine tautomer. Polyhedron 2007. [DOI: 10.1016/j.poly.2007.06.037] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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42
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Aoki K, Salam MA, Munakata C, Fujisawa I. Metal ion interactions with nucleic acid bases in the tripodal tris(2-aminoethyl)amine (tren) ligand-system: Crystal structures of [Ni(tren)(adeninato)(ClO4)]·adenine, [Cu(tren)(9-ethylguanine)]·(ClO4)2, [{Ni(tren)(H2O)}2(hypoxanthinato)]·(ClO4)3·1.5H2O, [Ni(tren)(hypoxanthinato)(H2O)]·ClO4·2H2O, and [{Ni(tren)(H2O)}2(hypoxanthinato)]2·(NO3)6·4.5H2O. Inorganica Chim Acta 2007. [DOI: 10.1016/j.ica.2007.02.043] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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43
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García-Teran JP, Castillo O, Luque A, García-Couceiro U, Beobide G, Roman P. Molecular recognition of adeninium cations on anionic metal-oxalato frameworks: an experimental and theoretical analysis. Inorg Chem 2007; 46:3593-602. [PMID: 17375914 DOI: 10.1021/ic062448s] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Reactions of adenine with water-soluble oxalato complexes at acidic pH give the compounds (1H,9H-ade)2[Cu(ox)2(H2O)] (1) [H2ade=adeninium cation (1+), ox=oxalato ligand (2-)] and (3H,7H-ade)2[M(ox)2(H2O)2].2H2O [M(II)=Co (2), Zn (3)]. The X-ray single crystal analyses show that the supramolecular architecture of all compounds is built up of anionic sheets of metal-oxalato-water complexes and ribbons of cationic nucleobases among them to afford lamellar inorganic-organic hybrid materials. The molecular recognition process between the organic and the inorganic frameworks determines the isolated tautomeric form of the adeninium cation found in the crystal structures: the canonical 1H,9H for compound 1, and the first solid-state characterized 3H,7H-adeninium tautomer for compounds 2 and 3. Density functional theory calculations have been performed to study the stability of the protonated nucleobase forms and their hydrogen-bonded associations by comparing experimental and theoretical results.
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Affiliation(s)
- Juan P García-Teran
- Departamento de Química Inorgánica, Facultad de Ciencia y Tecnología, Universidad del País Vasco, Apartado 644, E-48080 Bilbao, Spain
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44
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Yang EC, Zhao HK, Ding B, Wang XG, Zhao XJ. The first 2D trinuclear Cd(ii)-complex with adenine nucleobase: hydrothermal synthesis, crystal structure and fluorescent properties. NEW J CHEM 2007. [DOI: 10.1039/b712387f] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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45
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Alarcón-Payer C, Bugella-Altamirano E, Choquesillo-Lazarte D, Castiñeiras A, González-Pérez JM, Niclós-Gutiérrez J. Dinuclear EGTA-copper(II) chelates with imidazole as auxiliary ligand. INORG CHEM COMMUN 2006. [DOI: 10.1016/j.inoche.2006.05.023] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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46
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González-Pérez JM, Alarcón-Payer C, Castiñeiras A, Pivetta T, Lezama L, Choquesillo-Lazarte D, Crisponi G, Niclós-Gutiérrez J. A Windmill-Shaped Hexacopper(II) Molecule Built Up by Template Core-Controlled Expansion of Diaquatetrakis(μ2-adeninato-N3,N9)dicopper(II) with Aqua(oxydiacetato)copper(II). Inorg Chem 2005; 45:877-82. [PMID: 16411726 DOI: 10.1021/ic051965s] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The windmill-shaped hexanuclear copper(II) cluster {(H(2)O)(2)Cu(2)(mu(3)-(Ade)(4)[Cu(oda)(H(2)O)](4)}.6H(2)O (1-o) has been synthesized in aqueous medium by in situ core-controlled expansion of the neutral building block Cu(2)(mu(2)-N3,N9-Ade)(4)(H(2)O)(2) (2) with Cu(oda)(H(2)O) (3-o) (Ade = adeninato(1-) and oda = oxydiacetato(2-) ligands). Crystal data for 2-b (2.5H(2)O): triclinic, space group P(-)1; a = 9.374(1), b = 9.440(1), c = 10.326(1) A; alpha = 78.72(1), beta = 76.77(1), gamma = 63.51(1) degrees ; final R(1) = 0.059; T = 100(2) K. Crystal data for 1-o: monoclinic, space group P2(1)/n; a = 15.203(2), b = 10.245(1), c = 19.094(2) A; beta = 101.61(1) degrees ; final R(1) = 0.049; T = 293(2) K. The X-shaped hexanuclear molecule consists of a central core (2) and four terminal arms (3-o) linked together by bridging mu(3)-N3,N7,N9-Ade ligands. There are three crystallographic independent metal atoms (two terminals, one central). All Cu(II) atoms exhibit a 4 + 1 coordination, of which one is an aqua apical ligand. The basal coordination sets complete the CuN(4) + O or CuO(3)N + O chromophores for the central or terminal metal atoms, respectively. Thermal stability and spectral and magnetic properties were also studied. Analogous compounds to 1-o with tridentate or tripodal tetradentate ligands L(2-), instead of oda, have also been synthesized.
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García-Terán JP, Castillo O, Luque A, García-Couceiro U, Beobide G, Román P. Supramolecular architectures assembled by the interaction of purine nucleobases with metal-oxalato frameworks. Non-covalent stabilization of the 7H-adenine tautomer in the solid-state. Dalton Trans 2005:902-11. [PMID: 16462950 DOI: 10.1039/b510018f] [Citation(s) in RCA: 74] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The synthesis, crystal structure and variable-temperature magnetic measurements of the compounds [Mn(mu-ox)(H2O)(7H-pur-kappaN9)]n (1), {[Mn(mu-ox)(H2O)2].(7H-ade).(H2O)}n (2) and {[Cu(mu-ox)(H2O)(7H-ade-kappaN9)][Cu(mu-ox)(mu-H2O)(7H-ade-kappaN9)]. approximately 10/3H2O}n (3), (where ox: oxalato dianion, pur: purine, and ade: adenine) are reported. Compounds 1and 2 contain one-dimensional chains in which manganese(II) atoms are bridged by bis-bidentate oxalato ligands. The distorted octahedral geometry around each metal centre is completed in compound 1 by one water molecule and the imidazole N9 donor site of the purine ligand, which is a rare example of direct binding between the Mn(II) ion and the N donor site of an isolated nucleobase. Unlike 1, the adenine moiety in compound 2 is not bonded to manganese atoms and the metal coordination polyhedron is filled by two water molecules in a cis-arrangement. Its crystal building is constructed from pi-stacked layers of Watson-Crick hydrogen-bonded adenine...(H2O2)...adenine aggregates and zig-zag Mn(II)-oxalato chains held together by means of a strong network of hydrogen bonding interactions. The nucleobase exists in the lattice as the 7H-adenine tautomer which represents an unprecedented solid-state characterization of this minor tautomer as free molecule (without metal coordination) stabilized through non-covalent interactions. Compound consists of two slightly different [Cu(ox)(H2O)(7H-ade-kappaN9)] units in which the nucleobase coordinates through the imidazole N9 atom. The planar complex entities are parallel stacked and joined by means of long Cu-O bonds involving oxygen atoms from the oxalato and the aqua ligands, giving one-dimensional chains with a [4 + 1] square-planar pyramidal and a [4 + 2] octahedral coordination around the metal centre, respectively. Self-assembled process of compound 3 is further driven by an in-plane network of hydrogen bonding interactions to generate a porous 3D structure containing parallel channels filled by guest water molecules. Variable-temperature magnetic susceptibility measurements of all the complexes show the occurrence of antiferromagnetic interactions between the paramagnetic centres. DFT calculations have been performed to check the influence of packing in the stability of the 7H-amino tautomer of 2 and in the complex geometry of 3.
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Affiliation(s)
- Juan P García-Terán
- Departamento de Química Inorgánica, Facultad de Ciencia y Tecnología, Universidad del País Vasco, Apartado 644, E-48080 Bilbao, Spain
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Rojas-González PX, Brandi-Blanco MP, Castiñeiras A, Choquesillo-Lazarte D, González-Pérez JM, Niclós-Gutiérrez J. Mixed-ligand Copper(II) Complexes with N-isopropyl-iminodiacetato(2-) and C-phenyl-imidazole Ligands. Crystal Structures of H2iPIDA, [Cu(iPIDA)(H2φim)(H2O)]·3H2O and [Cu(iPIDA)(H5φim)]n. Z Anorg Allg Chem 2005. [DOI: 10.1002/zaac.200570033] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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49
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Tribet M, Covelo B, Sicilia-Zafra AG, Navarrete-Casas R, Choquesillo-Lazarte D, González-Pérez JM, Castiñeiras A, Niclós-Gutiérrez J. Ternary copper(II) complexes with N-carboxymethyl-l-prolinato(2−) ion and imidazole or creatinine: A comparative study of the interligand interactions influencing the molecular recognition and stability. J Inorg Biochem 2005; 99:1424-32. [PMID: 15878623 DOI: 10.1016/j.jinorgbio.2005.03.012] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2005] [Revised: 03/14/2005] [Accepted: 03/25/2005] [Indexed: 10/25/2022]
Abstract
The compounds {[Cu(CMP)(Him)].H(2)O}(n) (I) and [Cu(CMP)(crea)H(2)O].3H(2)O (II) were synthesized and characterized by X-ray diffraction, thermal, spectral and magnetic methods (CMP=N-carboxymethyl-;l-prolinato(2-) ion, Him=imidazole and crea=creatinine). Appropriate structural comparison with other compounds such as {[Cu(CMP)(H(2)O)].H(2)O}(n), [Cu(crea)(2)Cl(2)] and [Cu(dipeptide)(crea)(H(2)O)(x)].nH(2)O (x=0 or 1) have been made in order to prove that crea can act as an imidazole-like ligand (because it is able to promote the same fac- to mer-CMP tridentate conformational change in copper(II) complexes) as well as to discuss the interligand interactions which control the 'Cu(CMP) complex-crea, molecular recognition processes. In contrast to that found in related ternary complexes, we have concluded that direct CMP-crea interligand interactions are missing in the Cu-CMP-crea complex due to the inappropriate correspondence between the donor and/or acceptor H-bonding properties of these ligands. CMP can only act as H-acceptor by its two terminal carboxylate group, and crea can display H-donor and H-acceptor roles by its exocyclic -NH(2) and O moieties, respectively. That promotes the reinforcement of the Cu-N(crea) bond by a bridge -N-H(crea)...O(aqua) (2.867(3)A, 176.4 degrees).
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Affiliation(s)
- M Tribet
- Department of Inorganic Chemistry, Faculty of Pharmacy, University of Granada, E-18071Granada, Spain
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50
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Thiodiacetato-copper(II) chelates with or without N-heterocyclic donor ligands: molecular and/or crystal structures of [Cu(tda)]n, [Cu(tda)(Him)2(H2O)] and [Cu(tda)(5Mphen)]·2H2O (Him=imidazole, 5Mphen=5-methyl-1,10-phenanthroline). Inorganica Chim Acta 2005. [DOI: 10.1016/j.ica.2004.12.056] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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