1
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Chowdhury M, Biswas N, Saha S, Rahaman A, Gupta PS, Banerjee A, Mandal DP, Bhattacharjee S, Zangrando E, Sciortino G, Pisanu F, Garribba E, Roy Choudhury R, Roy Choudhury C. Interaction with CT-DNA and in vitro cytotoxicity of two new copper(II)-based potential drugs derived from octanoic hydrazide ligands. J Inorg Biochem 2024; 256:112546. [PMID: 38593611 DOI: 10.1016/j.jinorgbio.2024.112546] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Revised: 03/13/2024] [Accepted: 03/27/2024] [Indexed: 04/11/2024]
Abstract
Two copper(II) complexes [Cu(Hpmoh)(NO3)(NCS)] (1) and [Cu(peoh)(N3)]2 (2) were designed and synthesized by reaction of Cu(NO3)2·3H2O with hydrazone Schiff base ligands,abbreviated with Hpmoh and Hpeoh. Hpmoh and Hpeoh were prepared by condensation reaction of octanoic hydrazide with pyridine-2-carboxyaldehyde and 2-acetylpyridine, respectively. Complexes 1 and 2 were characterized using different analytical techniques such as FT-IR, UV-Vis, IR, EPR and single X-ray diffraction (XRD) analyses as well as computational methods (DFT). The XRD of 1 and 2 shows a mononuclear or a dinuclear structure with the copper(II) centre adopting a slightly distorted square pyramidal geometry. In water-containing solution and in DMSO, 1 and 2 undergo a partial transformation with formation of [Cu(Hpmoh)(NO3)(NCS)] (1) and [Cu(Hpmoh)(NO3)(H2O/DMSO)] (1a) in one system and [Cu(peoh)(N3)] (2a) in the other one, as supported by DFT calculations. Docking simulations confirmed that the intercalation is the preferred binding mode with DNA for 1, 1a and 2a, but suggested that the minor groove binding is also possible. A significant fluorescence quenching of the DNA-ethidium bromide conjugate was observed upon the addition of complexes 1 and 2 with a quenching constant around 104 M-1 s-1. Finally, both 1 and 2 were examined for anti-cancer activity using MDA-MB-231 (human breast adenocarcinoma) and A375 (malignant melanoma) cell lines through in vitro MTT assay which suggest comparable cancer cell killing efficacy, with the higher effectiveness of 2 due to the dissociation into two [Cu(peoh)(N3)] units.
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Affiliation(s)
- Manas Chowdhury
- Department of Chemistry, West Bengal State University, Barasat, Kolkata 700126, India
| | - Niladri Biswas
- Department of Biotechnology, Institute of Genetic Engineering, No. 30, Thakurhat Road, Badu, Madhyamgram, Kolkata, West Bengal 700128, India
| | - Sandeepta Saha
- Sripur High School, Madhyamgram Bazar, Kolkata 700130, India
| | - Ashikur Rahaman
- Department of Zoology, West Bengal State University, Barasat, Kolkata 700126, India
| | - Poulami Sen Gupta
- Department of Zoology, West Bengal State University, Barasat, Kolkata 700126, India
| | - Ankur Banerjee
- Department of Zoology, West Bengal State University, Barasat, Kolkata 700126, India
| | - Deba Prasad Mandal
- Department of Zoology, West Bengal State University, Barasat, Kolkata 700126, India
| | - Shamee Bhattacharjee
- Department of Zoology, West Bengal State University, Barasat, Kolkata 700126, India
| | - Ennio Zangrando
- Department of Chemical and Pharmaceutical Sciences, University of Trieste, Via L. Giorgieri 1, 34127 Trieste, Italy
| | - Giuseppe Sciortino
- Departament de Química, Universitat Autònoma de Barcelona, 08193 Cerdanyola del Vallès, Barcelona, Spain
| | - Federico Pisanu
- Dipartimento di Medicina, Chirurgia e Farmacia, Università di Sassari, Viale San Pietro, 07100 Sassari, Italy
| | - Eugenio Garribba
- Dipartimento di Medicina, Chirurgia e Farmacia, Università di Sassari, Viale San Pietro, 07100 Sassari, Italy.
| | - Ruma Roy Choudhury
- Department of Chemistry and Environment, Heritage Institute of Technology, Chowbaga Road, Badu, Kolkata 700 107, India
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2
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Kumar R, Maji A, Biswas B, Draksharapu A. Amphoteric reactivity of a putative Cu(II)- mCPBA intermediate. Dalton Trans 2024; 53:5401-5406. [PMID: 38426906 DOI: 10.1039/d3dt03747a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/02/2024]
Abstract
In copper-based enzymes, Cu-hydroperoxo/alkylperoxo species are proposed as key intermediates for their biological activity. A vast amount of literature is available on the functional and structural mimics of enzymatic systems with heme and non-heme ligand frameworks to stabilize high valent metal intermediates, mostly at low temperatures. Herein, we report a reaction between [CuI(NCCH3)4]+ and meta-chloroperoxybenzoic acid (mCPBA) in CH3CN that produces a putative CuII(mCPBA) species (1). 1 was characterized by UV/Vis, resonance Raman, and EPR spectroscopies. 1 can catalyze both electrophilic and nucleophilic reactions, demonstrating its amphoteric behavior. Additionally, 1 can also conduct electron transfer reactions with a weak reducing agent such as diacetyl ferrocene, making it one of the reactive copper-based intermediates. One of the most important aspects of the current work is the easy synthesis of a CuII(mCPBA) adduct with no complicated ligands for stabilization. Over time, 1 decays to form a CuII paddle wheel complex (2) and is found to be unreactive towards substrate oxidation.
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Affiliation(s)
- Rakesh Kumar
- Southern Laboratories - 208A, Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur-208016, India.
| | - Anweshika Maji
- Southern Laboratories - 208A, Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur-208016, India.
| | - Bhargab Biswas
- Southern Laboratories - 208A, Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur-208016, India.
| | - Apparao Draksharapu
- Southern Laboratories - 208A, Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur-208016, India.
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3
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Calvo R, Sartoris RP, Nascimento OR, Šedivý M, Sojka A, Neugebauer P, Santana VT. Quantum phase transitions probed by EPR spectra in dimeric spin arrays with supramolecular couplings. Coord Chem Rev 2023. [DOI: 10.1016/j.ccr.2022.215007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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4
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Sartoris RP, Santana VT, Freire E, Baggio RF, Nascimento OR, Calvo R. Exchange couplings and quantum phases in two dissimilar arrays of similar copper dinuclear units. Dalton Trans 2020; 49:5228-5240. [DOI: 10.1039/d0dt00567c] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
X-ray structure and EPR spectra of two dinuclear copper compounds allow us to study spin entanglement and quantum phase transitions. Their different 3D arrays and interdinuclear exchange paths produce important effects.
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Affiliation(s)
- Rosana P. Sartoris
- Departamento de Física
- Facultad de Bioquímica y Ciencias Biológicas
- Universidad Nacional del Litoral
- Santa Fe
- Argentina
| | - Vinicius T. Santana
- CEITEC - Central European Institute of Technology
- Brno University of Technology
- Brno
- Czech Republic
| | - Eleonora Freire
- Gerencia de Investigación y Aplicaciones
- Centro Atómico Constituyentes
- Comisión Nacional de Energía Atómica
- Buenos Aires
- Argentina
| | - Ricardo F. Baggio
- Gerencia de Investigación y Aplicaciones
- Centro Atómico Constituyentes
- Comisión Nacional de Energía Atómica
- Buenos Aires
- Argentina
| | - Otaciro R. Nascimento
- Departamento de Física e Ciencias Interdisciplinares
- Instituto de Física de São Carlos
- Universidade de São Paulo - USP
- São Carlos
- Brazil
| | - Rafael Calvo
- Departamento de Física
- Facultad de Bioquímica y Ciencias Biológicas
- Universidad Nacional del Litoral
- Santa Fe
- Argentina
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5
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Topić E, Pisk J, Agustin D, Jendrlin M, Cvijanović D, Vrdoljak V, Rubčić M. Discrete and polymeric ensembles based on dinuclear molybdenum( vi) building blocks with adaptive carbohydrazide ligands: from the design to catalytic epoxidation. NEW J CHEM 2020. [DOI: 10.1039/d0nj01045f] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Discrete and polymeric ensembles based on dimolybdenum(vi) units with adaptive carbohydrazide ligands are described. The polymeric complexes are efficient catalysts for cyclooctene epoxidation under eco-friendly conditions.
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Affiliation(s)
- Edi Topić
- University of Zagreb
- Faculty of Science
- Department of Chemistry
- Croatia
| | - Jana Pisk
- University of Zagreb
- Faculty of Science
- Department of Chemistry
- Croatia
| | | | - Martin Jendrlin
- University of Zagreb
- Faculty of Science
- Department of Chemistry
- Croatia
| | - Danijela Cvijanović
- University of Zagreb
- School of Medicine
- Department of Chemistry and Biochemistry
- Croatia
| | - Višnja Vrdoljak
- University of Zagreb
- Faculty of Science
- Department of Chemistry
- Croatia
| | - Mirta Rubčić
- University of Zagreb
- Faculty of Science
- Department of Chemistry
- Croatia
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6
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Azmi NI, Zhan SZ, Li JH, Razali MR. Metal complexes based on substituted aliphatic acid derived from a Diels-Alder adduct: Synthesis and potential ratiometric luminescent temperature sensor of d10 complex. Inorganica Chim Acta 2019. [DOI: 10.1016/j.ica.2019.119167] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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7
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Santana VT, Cunha BN, Plutín AM, Silveira RG, Castellano EE, Batista AA, Calvo R, Nascimento OR. Magnetic-field-tuned phase transition of a molecular material from the isolated-spin to the coupled-spin regime. Phys Chem Chem Phys 2019; 21:4394-4407. [DOI: 10.1039/c8cp06719h] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
A quantum phase transition, as a consequence of spin-entanglements caused by Cu–Cu exchange couplings, explains EPR measurements in a new monomeric CuII compound.
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Affiliation(s)
- Vinicius T. Santana
- CEITEC – Central European Institute of Technology
- Brno University of Technology
- 61200 Brno
- Czech Republic
- Departamento de Física e Ciencias Interdisciplinares
| | - Beatriz N. Cunha
- Departamento de Química
- Universidade Federal de São Carlos – UFSCar
- São Carlos
- Brazil
- Instituto Federal Goiano
| | - Ana M. Plutín
- Laboratorio de Síntesis Orgánica
- Facultad de Química
- Universidad de la Habana UH
- Cuba
| | - Rafael G. Silveira
- Departamento de Química
- Universidade Federal de São Carlos – UFSCar
- São Carlos
- Brazil
- Instituto Federal Goiano
| | - Eduardo E. Castellano
- Departamento de Física e Ciencias Interdisciplinares
- Instituto de Física de São Carlos
- Universidade de São Paulo – USP
- CP 369
- São Carlos
| | - Alzir A. Batista
- Departamento de Química
- Universidade Federal de São Carlos – UFSCar
- São Carlos
- Brazil
| | - Rafael Calvo
- Instituto de Física del Litoral
- CONICET-UNL, and Departamento de Física
- Facultad de Bioquímica y Ciencias Biológicas
- Universidad Nacional del Litoral
- 3000 Santa Fe
| | - Otaciro R. Nascimento
- Departamento de Física e Ciencias Interdisciplinares
- Instituto de Física de São Carlos
- Universidade de São Paulo – USP
- CP 369
- São Carlos
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8
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Structure and Magnetic Properties of a 1D Alternating Cu(II) Monomer―Paddlewheel Chain. CRYSTALS 2018. [DOI: 10.3390/cryst8030114] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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9
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Polymeric Copper(II) Paddlewheel Carboxylate: Structural Description, Electrochemistry, and DNA-binding Studies. Z Anorg Allg Chem 2018. [DOI: 10.1002/zaac.201700375] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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10
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Vishnoi P, Kaleeswaran D, Murugavel R. Rare Supramolecular Assemblies of a Dicopper(II)-tetracarboxylate Stabilized by (Methanol)6
, Dimethyl Sulfoxide and 4,4′-Azobipyridyl Bridges. ChemistrySelect 2017. [DOI: 10.1002/slct.201702862] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Pratap Vishnoi
- Department of Chemistry; Indian Institute of Technology Bombay; Mumbai 400 076 India
| | | | - Ramaswamy Murugavel
- Department of Chemistry; Indian Institute of Technology Bombay; Mumbai 400 076 India
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11
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Chelating properties of EDTA-type ligands containing six-membered backbone ring toward copper ion: Structure, EPR and TD-DFT evaluation. Polyhedron 2017. [DOI: 10.1016/j.poly.2016.12.025] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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12
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Das K, Mendiratta S, Datta A, Gajewska MJ, Garribba E, Akitsu T, Sinha C. A New CuII
Coordination Polymer: Structural Elucidation, EPR and Sensing Studies for Detection of Volatile Organic Solvents. ChemistrySelect 2016. [DOI: 10.1002/slct.201600390] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Kuheli Das
- Department of Chemistry; Jadavpur University; Kolkata - 700032 India
| | - Shruti Mendiratta
- Institute of Chemistry; Academia Sinica; Nankang Taipei - 115 Taiwan
| | - Amitabha Datta
- Institute of Chemistry; Academia Sinica; Nankang Taipei - 115 Taiwan
| | | | - Eugenio Garribba
- Dipartimento di Chimica e Farmacia; Università di Sassari; Via Vienna 2 I-07100 Sassari Italy
| | - Takashiro Akitsu
- Department of Chemistry, Faculty of Science; Tokyo University of Science; 1-3 Kagurazaka Shinjuku-ku, Tokyo 162-8601 Japan
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13
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Nandy M, Shit S, Garribba E, Gómez-García CJ, Mitra S. Double azido/cyanato bridged copper(II) dimers incorporating tridentate nitrogen donors Schiff base: Structure, EPR and magnetic studies. Polyhedron 2015. [DOI: 10.1016/j.poly.2015.07.034] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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14
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Sartoris RP, Nascimento OR, Santana RC, Perec M, Baggio RF, Calvo R. Structure and magnetism of a binuclear Cu(II) pyrophosphate: transition to a 3D magnetic behaviour studied by single crystal EPR. Dalton Trans 2015; 44:4732-43. [PMID: 25666395 DOI: 10.1039/c4dt03616f] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
A binuclear Cu(II) compound [Cu2(bpa)2(P2O7)(H2O)2]·2.5H2O, 1, (bpa = 2,2'-bipyridylamine), with pairs of Cu(II) ions bridged by one pyrophosphate tetra-anion, was synthesized and crystallized. Its triclinic structure was determined by single-crystal X-ray diffraction. Electron paramagnetic resonance (EPR) spectra of single crystal samples of 1 were recorded for a fixed orientation of the magnetic field (B0) as a function of temperature (T) between 4.7 and 293 K, and at T = 4.7, 50 and 293 K, as a function of the orientation of B0. Below ∼8 K, the spectra are assigned to two types of mononuclear crystal defects hyperfine-coupled to one copper and two nitrogen nuclei. The g-matrices and hyperfine couplings at these T provide information about the structures of these defects. Above 10 K, the spectrum is dominated by the response of the bulk binuclear Cu(II) material, showing hyperfine interactions with two copper nuclei, collapsing to a single peak above 18 K when the units are magnetically connected, and the magnetic behaviour becomes 3D. We attribute the results above 10 K to the interplay of an AFM intrabinuclear exchange interaction J0 = -28(3) cm(-1) (defined as Hex = -J0S1·S2), and three orders of magnitude weaker exchange coupling with average magnitude |J1| ≥ 0.022 cm(-1) between Cu(II) ions in neighbouring binuclear units. The interplays between structure, exchange couplings, magnetic dimension and spin dynamics in the binuclear compound are discussed. A previously unreported situation, where the structure of the spectra arising from the anisotropic spin-spin interaction term (D) within the binuclear unit is averaged out, but the forbidden half field transition is not, is observed and explained.
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Affiliation(s)
- Rosana P Sartoris
- Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, Ciudad Universitaria, 3000 Santa Fe, Argentina.
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15
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Venegas-Yazigi D, Spodine E, Saldias M, Vega A, Paredes-García V, Calvo R, de Santana RC. 1D magnetic interactions in Cu(II) oxovanadium phosphates (VPO), magnetic susceptibility, DFT, and single-crystal EPR. Inorg Chem 2015; 54:3805-14. [PMID: 25831075 DOI: 10.1021/ic503045d] [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]
Abstract
We report the crystal face indexing and molecular spatial orientation, magnetic properties, electron paramagnetic resonance (EPR) spectra, and density functional theory (DFT) calculations of two previously reported oxovanadium phosphates functionalized with Cu(II) complexes, namely, [Cu(bipy)(VO2)(PO4)]n (1) and [{Cu(phen)}2(VO2(H2O)2)(H2PO4)2 (PO4)]n (2), where bipy = 2,2'-bipyridine and phen = 1,10-phenanthroline, obtained by a new synthetic route allowing the growth of single crystals appropriate for the EPR measurements. Compounds 1 and 2 crystallize in the triclinic group P1̅ and in the orthorhombic Pccn group, respectively, containing dinuclear copper units connected by two -O-P-O- bridges in 1 and by a single -O-P-O- bridge in 2, further connected through -O-P-O-V-O- bridges. We emphasize in our work the structural aspects related to the chemical paths that determine the magnetic properties. Magnetic susceptibility data indicate bulk antiferromagnetism for both compounds, allowing to calculate J = -43.0 cm(-1) (dCu-Cu = 5.07 Å; J defined as Hex(i,j) = -J Si·Sj), considering dinuclear units for 1, and J = -1.44 cm(-1) (dCu-Cu = 3.47 Å) using the molecular field approximation for 2. The single-crystal EPR study allows evaluation of the g matrices, which provide a better understanding of the electronic structure. The absence of structure of the EPR spectra arising from the dinuclear character of the compounds allows estimation of weak additional exchange couplings |J'| > 0.3 cm(-1) for 1 (dCu-Cu = 5.54 Å) and a smaller value of |J'| ≥ 0.15 cm(-1) for 2 (dCu-Cu = 6.59 Å). DFT calculations allow evaluating two different exchange couplings for each compound, specifically, J = -36.60 cm(-1) (dCu-Cu = 5.07 Å) and J' = 0.20 cm(-1) (dCu-Cu =5.54 Å) for 1 and J = -1.10 cm(-1) (dCu-Cu =3.47 Å) and J' = 0.01 cm(-1) (dCu-Cu = 6.59 Å) for 2, this last value being in the range of the uncertainties of the calculations. Thus, these values are in good agreement with those provided by magnetic and single-crystal EPR measurements.
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Affiliation(s)
- Diego Venegas-Yazigi
- †Facultad de Química y Biología, Universidad de Santiago de Chile, USACH, Santiago, Chile.,‡Centro para el Desarrollo de Nanociencias y Nanotecnología, CEDENNA, Santiago, Chile
| | - Evgenia Spodine
- ‡Centro para el Desarrollo de Nanociencias y Nanotecnología, CEDENNA, Santiago, Chile.,§Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Santiago, Chile
| | - Marianela Saldias
- ‡Centro para el Desarrollo de Nanociencias y Nanotecnología, CEDENNA, Santiago, Chile.,§Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Santiago, Chile
| | - Andrés Vega
- ‡Centro para el Desarrollo de Nanociencias y Nanotecnología, CEDENNA, Santiago, Chile.,⊥Departamento de Ciencias Químicas, Universidad Andrés Bello, Santiago, Chile
| | - Verónica Paredes-García
- ‡Centro para el Desarrollo de Nanociencias y Nanotecnología, CEDENNA, Santiago, Chile.,⊥Departamento de Ciencias Químicas, Universidad Andrés Bello, Santiago, Chile
| | - Rafael Calvo
- ¶Departamento de Física, Facultad de Bioquímica y Ciencias Biológicas, and Instituto de Física del Litoral, CONICET-Universidad Nacional del Litoral, 3000 Santa Fe, Argentina
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16
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Khadir N, Boghaei DM, Assoud A, Nascimento OR, Nicotina A, Ghivelder L, Calvo R. The structure, magnetism and EPR spectra of a (μ-thiophenolato)(μ-pyrazolato-N,N') double bridged dicopper(II) complex. Dalton Trans 2015; 44:2431-8. [PMID: 25553757 DOI: 10.1039/c4dt03322a] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new binuclear copper(ii) complex, namely [Cu2L(pz)(DMSO)], where L = 2,6-bis[(2-phenoxy)iminomethyl]-4-methylthiophenolate(3-) and pz = pyrazolate ligand, has been synthesized by a one-pot synthesis involving copper(ii) acetate monohydrate, the S-protected ligand precursor 2-(N,N-dimethylthiocarbamato)-5-methylisophthalaldehyde di-2'-hydroxy anil, (), and pyrazole, in which a metal-promoted S-deprotection reaction occurs during the formation of the complex. This was characterized by routine physicochemical studies, single crystal X-ray diffraction and electron paramagnetic resonance (EPR) techniques. The structure analysis reveals that there are copper centres in two different environments, a slightly distorted square planar and a distorted square-pyramidal, arranged in binuclear units. The EPR study of these binuclear units performed at 9.4 GHz in the temperature range between 4 and 293 K shows an antiferromagnetic interaction between Cu(II) ions, and allows evaluating g factors gx = 2.068(1), gy = 2.091(1) and gz = 2.165(1), with <g> = 2.108(1), an exchange coupling parameter J0 = -26(1) cm(-1) (defined as ), and a zero field splitting of the ground triplet state described by D = 86(2) × 10(-4) cm(-1) and E = -48(3) × 10(-4) cm(-1). These results are discussed and compared with the existing literature.
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Affiliation(s)
- Narjes Khadir
- Department of Chemistry, Sharif University of Technology, P.O. Box 11155-3516, Tehran, Iran.
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17
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Sartoris RP, Calvo R, Santana RC, Nascimento OR, Perec M, Baggio RF. Structural and EPR studies of pyrophosphate-bridged dinuclear CuII complexes. Polyhedron 2014. [DOI: 10.1016/j.poly.2014.05.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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18
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Mansour AM. What happens when (1H-benzimidazol-2-ylmethyl)-N-phenyl amine is added to copper(II) acetate? Spectroscopic, magnetic, and DFT studies. Inorganica Chim Acta 2013. [DOI: 10.1016/j.ica.2013.08.026] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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19
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Paredes-García V, Santana RC, Madrid R, Vega A, Spodine E, Venegas-Yazigi D. Unusual Conformation of a Dinuclear Paddle Wheel Copper(II) Complex. Synthesis, Structural Characterization and EPR Studies. Inorg Chem 2013; 52:8369-77. [DOI: 10.1021/ic3027804] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Verónica Paredes-García
- Departamento de Ciencias Químicas, Universidad Andres Bello, Santiago, Chile
- CEDENNA, Santiago, Chile
| | - Ricardo C. Santana
- Instituto
de Física, Universidade Federal de Goiás, Goiânia, 74001-970, Brazil
| | | | - Andrés Vega
- Departamento de Ciencias Químicas, Universidad Andres Bello, Santiago, Chile
- CEDENNA, Santiago, Chile
| | - Evgenia Spodine
- CEDENNA, Santiago, Chile
- Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Santiago, Chile
| | - Diego Venegas-Yazigi
- CEDENNA, Santiago, Chile
- Facultad de Química y Biología, Universidad de Santiago de Chile (USACH), Santiago,
Chile
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20
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Zhou J, Du L, Li Z, Qiao Y, Liu J, Zhu M, Chen P, Zhao Q. Synthesis, structure, and magnetic properties of two dimer paddle-wheel CuII toluate complexes with nitronyl nitroxide radicals. J COORD CHEM 2013. [DOI: 10.1080/00958972.2013.800485] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Jie Zhou
- a Key Laboratory of Medicinal Chemistry for Natural Resource Education Ministry, Department of Chemistry , Yunnan University , Kunming , China
| | - Lin Du
- a Key Laboratory of Medicinal Chemistry for Natural Resource Education Ministry, Department of Chemistry , Yunnan University , Kunming , China
| | - Zongze Li
- a Key Laboratory of Medicinal Chemistry for Natural Resource Education Ministry, Department of Chemistry , Yunnan University , Kunming , China
| | - Yongfeng Qiao
- a Key Laboratory of Medicinal Chemistry for Natural Resource Education Ministry, Department of Chemistry , Yunnan University , Kunming , China
| | - Jing Liu
- a Key Laboratory of Medicinal Chemistry for Natural Resource Education Ministry, Department of Chemistry , Yunnan University , Kunming , China
| | - Minrong Zhu
- a Key Laboratory of Medicinal Chemistry for Natural Resource Education Ministry, Department of Chemistry , Yunnan University , Kunming , China
| | - Peng Chen
- a Key Laboratory of Medicinal Chemistry for Natural Resource Education Ministry, Department of Chemistry , Yunnan University , Kunming , China
| | - Qihua Zhao
- a Key Laboratory of Medicinal Chemistry for Natural Resource Education Ministry, Department of Chemistry , Yunnan University , Kunming , China
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Rigamonti L, Carlino S, Halibi Y, Demartin F, Castellano C, Ponti A, Pievo R, Pasini A. Copper 1D coordination polymers and dimers: Role of the carboxylate and the ammonium cation, crystal structures and magnetic studies. Polyhedron 2013. [DOI: 10.1016/j.poly.2013.01.016] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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EL Mkami H, Mohideen M, Pal C, McKinlay A, Scheimann O, Morris R. EPR and magnetic studies of a novel copper metal organic framework (STAM-I). Chem Phys Lett 2012. [DOI: 10.1016/j.cplett.2012.06.012] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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23
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Venegas-Yazigi D, Brown KA, Vega A, Calvo R, Aliaga C, Santana RC, Cardoso-Gil R, Kniep R, Schnelle W, Spodine E. Exchange Interactions Through π–π Stacking in the Lamellar Compound [{Cu(bipy)(en)}{Cu(bipy)(H2O)}{VO3}4]n. Inorg Chem 2011; 50:11461-71. [DOI: 10.1021/ic201278a] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Diego Venegas-Yazigi
- Facultad de Química y
Biología, Universidad de Santiago de Chile, USACH, Santiago,
Chile
- Centro para el Desarrollo de
Nanociencias y Nanotecnología, CEDENNA, Santiago, Chile
| | - Kareen A. Brown
- Centro para el Desarrollo de
Nanociencias y Nanotecnología, CEDENNA, Santiago, Chile
- Facultad de Ciencias Químicas
y Farmacéuticas, Universidad de Chile, Santiago, Chile
| | - Andrés Vega
- Centro para el Desarrollo de
Nanociencias y Nanotecnología, CEDENNA, Santiago, Chile
- Departamento de Ciencias Químicas,
Universidad Andres Bello, Santiago, Chile
| | - Rafael Calvo
- Facultad de Bioquímica
y Ciencias Biológicas and INTEC, CONICET-Universidad Nacional
del Litoral, 3000 Santa Fe, Argentina
| | - Carolina Aliaga
- Facultad de Química y
Biología, Universidad de Santiago de Chile, USACH, Santiago,
Chile
- Centro para el Desarrollo de
Nanociencias y Nanotecnología, CEDENNA, Santiago, Chile
| | - Ricardo C. Santana
- Instituto de Física,
Universidade Federal de Goiás, CP 131, 74001-970 Goiânia,
Brazil
| | - Raul Cardoso-Gil
- Max-Planck-Institut für
Chemische Physik fester Stoffe, Dresden, Germany
| | - Rüdiger Kniep
- Max-Planck-Institut für
Chemische Physik fester Stoffe, Dresden, Germany
| | - Walter Schnelle
- Max-Planck-Institut für
Chemische Physik fester Stoffe, Dresden, Germany
| | - Evgenia Spodine
- Centro para el Desarrollo de
Nanociencias y Nanotecnología, CEDENNA, Santiago, Chile
- Facultad de Ciencias Químicas
y Farmacéuticas, Universidad de Chile, Santiago, Chile
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Agotegaray M, Boeris M, Diez A, Prat M, Quinzani O. Dinuclear copper(II) complexes of Fenoprofen: synthesis, spectroscopic, thermal, and SOD-mimic activity studies. J COORD CHEM 2011. [DOI: 10.1080/00958972.2011.594508] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- M.A. Agotegaray
- a Departamento de Química , INQUISUR, Universidad Nacional del Sur , Avda. Alem 1253 , B8000CPB Bahía Blanca , Argentina
| | - M.A. Boeris
- b Facultad de Ciencias Veterinarias , Centro de Investigación y Desarrollo de Fármacos (CIDEF), Universidad Nacional de La Pampa , Calle 5y 116, General Pico , CP 6360 , Argentina
| | - A.S. Diez
- a Departamento de Química , INQUISUR, Universidad Nacional del Sur , Avda. Alem 1253 , B8000CPB Bahía Blanca , Argentina
| | - M.R. Prat
- a Departamento de Química , INQUISUR, Universidad Nacional del Sur , Avda. Alem 1253 , B8000CPB Bahía Blanca , Argentina
| | - O.V. Quinzani
- a Departamento de Química , INQUISUR, Universidad Nacional del Sur , Avda. Alem 1253 , B8000CPB Bahía Blanca , Argentina
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25
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Abud JE, Sartoris RP, Calvo R, Baggio R. μ-Acetato-μ-aqua-μ-hydroxido-bis[(1,10-phenanthroline)copper(II)] dinitrate monohydrate. Acta Crystallogr C 2011; 67:m130-3. [DOI: 10.1107/s0108270111011048] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2011] [Accepted: 03/24/2011] [Indexed: 11/11/2022] Open
Affiliation(s)
- Julian E Abud
- Departamento de Física, Facultad de Bioquímica y Ciencias Biológicas, Ciudad Universitaria 3000, Santa Fe, Argentina
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26
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Li H, Yao H, Zhang E, Jia Y, Hou H, Fan Y. Crystal structures and magnetism of infinite alternating chains arranged by paddle-wheel dinuclear copper and mononuclear copper units. Dalton Trans 2011; 40:9388-93. [DOI: 10.1039/c1dt10822k] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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27
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Neuman NI, Perec M, González PJ, Passeggi MCG, Rizzi AC, Brondino CD. Single Crystal EPR Study of the Dinuclear Cu(II) Complex [Cu(tda)(phen)]2·H2tda (tda = Thiodiacetate, phen = Phenanthroline): Influence of Weak Interdimeric Magnetic Interactions. J Phys Chem A 2010; 114:13069-75. [DOI: 10.1021/jp108736p] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Nicolás I. Neuman
- Departamento de Física, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, Ciudad Universitaria, Paraje El Pozo, S3000ZAA Santa Fe, Argentina, Departamento de Química Inorgánica Analítica y Química Física, Facultad de Ciencias Exactas y Naturales, INQUIMAE, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón II, 1428, Buenos Aires, Argentina, Departamento da Quimica, Requimte/CQFB, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica,
| | - Mireille Perec
- Departamento de Física, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, Ciudad Universitaria, Paraje El Pozo, S3000ZAA Santa Fe, Argentina, Departamento de Química Inorgánica Analítica y Química Física, Facultad de Ciencias Exactas y Naturales, INQUIMAE, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón II, 1428, Buenos Aires, Argentina, Departamento da Quimica, Requimte/CQFB, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica,
| | - Pablo J. González
- Departamento de Física, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, Ciudad Universitaria, Paraje El Pozo, S3000ZAA Santa Fe, Argentina, Departamento de Química Inorgánica Analítica y Química Física, Facultad de Ciencias Exactas y Naturales, INQUIMAE, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón II, 1428, Buenos Aires, Argentina, Departamento da Quimica, Requimte/CQFB, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica,
| | - Mario C. G. Passeggi
- Departamento de Física, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, Ciudad Universitaria, Paraje El Pozo, S3000ZAA Santa Fe, Argentina, Departamento de Química Inorgánica Analítica y Química Física, Facultad de Ciencias Exactas y Naturales, INQUIMAE, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón II, 1428, Buenos Aires, Argentina, Departamento da Quimica, Requimte/CQFB, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica,
| | - Alberto C. Rizzi
- Departamento de Física, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, Ciudad Universitaria, Paraje El Pozo, S3000ZAA Santa Fe, Argentina, Departamento de Química Inorgánica Analítica y Química Física, Facultad de Ciencias Exactas y Naturales, INQUIMAE, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón II, 1428, Buenos Aires, Argentina, Departamento da Quimica, Requimte/CQFB, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica,
| | - Carlos D. Brondino
- Departamento de Física, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, Ciudad Universitaria, Paraje El Pozo, S3000ZAA Santa Fe, Argentina, Departamento de Química Inorgánica Analítica y Química Física, Facultad de Ciencias Exactas y Naturales, INQUIMAE, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón II, 1428, Buenos Aires, Argentina, Departamento da Quimica, Requimte/CQFB, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica,
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