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Bonastre-Sabater I, Lopera A, Martínez-Camarena Á, Blasco S, Doménech-Carbó A, Jiménez HR, Verdejo B, García-España E, Clares MP. Exo- or endo-1 H-pyrazole metal coordination modulated by the polyamine chain length in [1 + 1] condensation azamacrocycles. Binuclear complexes with remarkable SOD activity. Dalton Trans 2024. [PMID: 38973348 DOI: 10.1039/d4dt01236d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/09/2024]
Abstract
The Cu2+ complexes of three [1 + 1] azacyclophane macrocycles having the 1H-pyrazole ring as the spacer and the pentaamine 1,5,8,11,15-pentaazadecane (L1) or hexaamines 1,5,8,12,15,19-hexaazanonadecane (L2) and 1,5,9,13,17,21-hexaazaheneicosane (L3) as bridges show endo- coordination of the pyrazolate bridge giving rise to discrete monomeric species. Previously reported pyrazolacyclophanes evidenced, however, exo-coordination with the formation of dimeric species of 2 : 2, 3 : 2 or even 4 : 2 Cu2+ : L stoichiometry. The complexes have been characterized in solution using potentiometric studies, UV-Vis spectroscopy, paramagnetic NMR, cyclic voltammetry and mass spectrometry. The measurements show that all three ligands have as many protonation steps in water as secondary amines are in the bridge, while they are able to form both mono- and binuclear Cu2+ species. The crystal structures of the complexes [Cu(HL1)Br]Br(1+x)(ClO4)(1-x)·yH2O (1) and [Cu2(H-1L2)Cl(ClO4)](ClO4)·H2O·C2H5OH (2) have been solved by X-ray diffraction studies. In 1 the metal ion lies at one side of the macrocyclic cavity being coordinated by one nitrogen of the pyrazolate moiety and the three consecutive nitrogen atoms of the polyamine bridge. The other nitrogen of the pyrazole ring is hydrogen-bonded to an amine group. In 2 the two metal ions are interconnected by a pyrazolate bis(monodentate) moiety and complete their coordination spheres with three amines and either a bromide or a perchlorate anion, which occupy the axial positions of distorted square pyramid geometries. Paramagnetic NMR studies of the binuclear complexes confirm the coordination pattern observed in the crystal structures. Cyclic voltamperommetry data show potentials within the adequate range to exhibit superoxide dismutase (SOD) activity. The IC50 values calculated by McCord-Fridovich enzymatic assays show that the binuclear Cu2+ complexes of L2 and L3 have SOD activities that rank amongst the highest ones reported so far.
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Affiliation(s)
- Irene Bonastre-Sabater
- Departamento de Química Inorgánica, Instituto de Ciencia Molecular. Universidad de Valencia, Calle Catedrático José Beltrán 2, 46980 Paterna, Valencia, Spain.
| | - Alberto Lopera
- Departamento de Química Inorgánica, Instituto de Ciencia Molecular. Universidad de Valencia, Calle Catedrático José Beltrán 2, 46980 Paterna, Valencia, Spain.
| | - Álvaro Martínez-Camarena
- Departamento de Química Inorgánica, Instituto de Ciencia Molecular. Universidad de Valencia, Calle Catedrático José Beltrán 2, 46980 Paterna, Valencia, Spain.
- Departamento de Química Inorgánica, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, avda. Complutense s/n, 28040 Madrid, Spain
| | - Salvador Blasco
- Departamento de Química Inorgánica, Instituto de Ciencia Molecular. Universidad de Valencia, Calle Catedrático José Beltrán 2, 46980 Paterna, Valencia, Spain.
| | - Antonio Doménech-Carbó
- Departamento de Química Analítica, Universidad de Valencia, Calle Dr Moliner s/n, 46100 Burjassot, Valencia, Spain
| | - Hermas R Jiménez
- Departamento de Química Inorgánica, Universidad de Valencia, Calle Doctor Moliner s/n, 46100 Burjasot, Valencia, Spain
| | - Begoña Verdejo
- Departamento de Química Inorgánica, Instituto de Ciencia Molecular. Universidad de Valencia, Calle Catedrático José Beltrán 2, 46980 Paterna, Valencia, Spain.
| | - Enrique García-España
- Departamento de Química Inorgánica, Instituto de Ciencia Molecular. Universidad de Valencia, Calle Catedrático José Beltrán 2, 46980 Paterna, Valencia, Spain.
| | - M Paz Clares
- Departamento de Química Inorgánica, Instituto de Ciencia Molecular. Universidad de Valencia, Calle Catedrático José Beltrán 2, 46980 Paterna, Valencia, Spain.
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2
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Synthesis of polymacrocyclic compounds via Pd-catalyzed amination and evaluation of their derivatives as metal detectors. PURE APPL CHEM 2019. [DOI: 10.1515/pac-2018-0714] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Abstract
A mini-review is dedicated to the application of Pd(0)-catalyzed amination reactions for the synthesis of polymacrocyclic compounds of various architectures. Such molecules comprise diazacrown ether moieties or structural fragments of tri- and tetraazamacrocycles, polyamine or polyoxadiamine chains of different length and aromatic spacers. Polymacrocyclic compounds thus formed possess an increased number of coordination sites and are suitable for testing as potential receptors of metal cations. Some of these macrocyclic compounds were decorated with the exocyclic dansyl fluorophore group or were coupled with porphyrin units to form polymacrocyclic conjugates. Fluorescent spectra of these compounds were studied in the presence of various metal perchlorates and several macrocycles were found to act as chemosensors or molecular probes for such cations like Cu(II), Al(III), Cr(III).
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Titov AA, Filippov OA, Smol'yakov AF, Baranova KF, Titova EM, Averin AA, Shubina ES. Dinuclear CuI
and AgI
Pyrazolates Supported with Tertiary Phosphines: Synthesis, Structures, and Photophysical Properties. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201801318] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Aleksei A. Titov
- A. N. Nesmeyanov Institute of Organoelement Compounds; Russian Academy of Sciences; Vavilov st. 28 119991 Moscow Russia
| | - Oleg A. Filippov
- A. N. Nesmeyanov Institute of Organoelement Compounds; Russian Academy of Sciences; Vavilov st. 28 119991 Moscow Russia
| | - Alexander F. Smol'yakov
- A. N. Nesmeyanov Institute of Organoelement Compounds; Russian Academy of Sciences; Vavilov st. 28 119991 Moscow Russia
- Inorganic Chemistry Department; Peoples' Friendship University of Russia; Miklukho-Maklaya str. 6 117198 Moscow Russia
| | - Kristina F. Baranova
- A. N. Nesmeyanov Institute of Organoelement Compounds; Russian Academy of Sciences; Vavilov st. 28 119991 Moscow Russia
- Faculty of Chemistry; Lomonosov Moscow State University; 1-3 Leninskie Gory 119991 Moscow Russia
| | - Ekaterina M. Titova
- A. N. Nesmeyanov Institute of Organoelement Compounds; Russian Academy of Sciences; Vavilov st. 28 119991 Moscow Russia
- Inorganic Chemistry Department; Peoples' Friendship University of Russia; Miklukho-Maklaya str. 6 117198 Moscow Russia
| | - Aleksey A. Averin
- A. N. Frumkin Institute of Physical Chemistry and Electrochemistry; Russian Academy of Sciences; Leninsky prospect 31 119071 Moscow Russia
| | - Elena S. Shubina
- A. N. Nesmeyanov Institute of Organoelement Compounds; Russian Academy of Sciences; Vavilov st. 28 119991 Moscow Russia
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4
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Pitarch-Jarque J, Belda R, García-España L, Llinares JM, Pan F, Rissanen K, Navarro P, García-España E. From isolated 1H-pyrazole cryptand anion receptors to hybrid inorganic–organic 1D helical polymeric anion receptors. Dalton Trans 2015; 44:7761-4. [DOI: 10.1039/c5dt00763a] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report a 1-D helical coordination polymer formed by protonated polyamine 1H-pyrazole cryptands interconnected by Cu2+metal ions that are able to encapsulate chloride anions behaving as a multianion receptor.
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Affiliation(s)
| | - Raquel Belda
- Instituto de Ciencia Molecular
- Universidad de Valencia
- Paterna
- Spain
| | | | - José M. Llinares
- Departamento de Química Orgánica
- Instituto de Ciencia Molecular
- Universidad de Valencia
- Paterna
- Spain
| | - FangFang Pan
- University of Jyvaskyla
- Department of Chemistry
- Nanoscience Center
- University of Jyvaskyla
- Finland
| | - Kari Rissanen
- University of Jyvaskyla
- Department of Chemistry
- Nanoscience Center
- University of Jyvaskyla
- Finland
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Wadhavane PD, Gorla L, Ferrer A, Altava B, Burguete MI, Izquierdo MÁ, Luis SV. Coordination behaviour of new open chain and macrocyclic peptidomimetic compounds with copper(ii). RSC Adv 2015. [DOI: 10.1039/c5ra15852d] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Two valine-derived bis(amino amides) ligands have been prepared and fully characterized.
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Affiliation(s)
- Prashant D. Wadhavane
- Departament of Inorganic and Organic Chemistry
- Universitat Jaume I
- Campus del Riu Sec
- Castellón
- Spain
| | - Lingaraju Gorla
- Departament of Inorganic and Organic Chemistry
- Universitat Jaume I
- Campus del Riu Sec
- Castellón
- Spain
| | - Armando Ferrer
- Departament of Inorganic and Organic Chemistry
- Universitat Jaume I
- Campus del Riu Sec
- Castellón
- Spain
| | - Belén Altava
- Departament of Inorganic and Organic Chemistry
- Universitat Jaume I
- Campus del Riu Sec
- Castellón
- Spain
| | - M. Isabel Burguete
- Departament of Inorganic and Organic Chemistry
- Universitat Jaume I
- Campus del Riu Sec
- Castellón
- Spain
| | - M. Ángeles Izquierdo
- Departament of Inorganic and Organic Chemistry
- Universitat Jaume I
- Campus del Riu Sec
- Castellón
- Spain
| | - Santiago V. Luis
- Departament of Inorganic and Organic Chemistry
- Universitat Jaume I
- Campus del Riu Sec
- Castellón
- Spain
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