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Kang S, Park BY, Moon D, Han MS. High-Throughput Approach for Facile Access to Hetero-Dinuclear Synergistic Metal Complex for H 2O 2 Activation and Its Implications. ACS APPLIED MATERIALS & INTERFACES 2023; 15:4175-4183. [PMID: 36622965 DOI: 10.1021/acsami.2c21955] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Hetero-dinuclear synergic catalysis is a promising approach for improving catalytic performance. However, employing it is challenging because the design principles for the metal complex are still not well understood. Further, these complexes have a broader set of possibilities than mononuclear or homometallic systems, increasing the time and effort required to understand them. In this study, we explored a high-throughput approach to obtain a new hetero-dinuclear synergistic metal complex for H2O2 activation. From the 1152 combinations of metal complex candidates obtained by changing three variables (metal ions, unsymmetrical dinucleating ligands, and pH), the lead complex (L3-(Ni, Co)), which has the highest peroxidase activity, was derived using colorimetric parallel analysis. A series of control experiments revealed that L3 plays a crucial role in the formation of active L3-(Ni, Co) complexes, Co2+ acts as a catalytic center, and Ni2+ serves as an assistant catalytic site within L3-(Ni, Co). In addition, the catalytic efficiency of L3-(Ni, Co), which was 125 times that of the homo-bimetallic complex (L3-(Co, Co)), revealed clear hetero-bimetallic synergism in the buffer. The ultraviolet-visible study and electron paramagnetic resonance-based spin-trap experiment provided mechanistic insight into H2O2 activation by the intermediate, which was found to be induced by the reaction of L3-(Ni, Co) and H2O2. Moreover, the intermediate could act as a donor of the hydroperoxyl radical (•OOH) in the buffer. Furthermore, L3-(Ni, Co) demonstrated potential for application as a signal transducer for H2O2 in an enzyme-coupled cascade assay that can be used for the colorimetric detection of glucose.
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Affiliation(s)
- Seungyoon Kang
- Department of Chemistry, Gwangju Institute of Science and Technology (GIST), Gwangju 61005, Republic of Korea
| | - Byoung Yong Park
- Department of Chemistry, Gwangju Institute of Science and Technology (GIST), Gwangju 61005, Republic of Korea
| | - Dohyun Moon
- Beamline Department, Pohang Accelerator Laboratory, Pohang 37673, Republic of Korea
| | - Min Su Han
- Department of Chemistry, Gwangju Institute of Science and Technology (GIST), Gwangju 61005, Republic of Korea
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2
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Si CD, Zhang JB, Pan FF, Yan X, Wang P, Xue DQ, Li XJ, Liu JC, Yuan K. Tuning Dimensions of Complexes through Selective In Situ Reaction, Mechanistic Insights into Ni(II)-Catalyzed Br-OH Exchange, Magnetic Properties, and Density Functional Theory Studies. Inorg Chem 2022; 61:20159-20168. [PMID: 36450105 DOI: 10.1021/acs.inorgchem.2c03643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
Abstract
Two coordination polymers (CPs), namely, [Mn3(L)2(4,4'-bipy)2(H2O)2]n (1) and [Ni(L1)(1,4-bib)(H2O)]n (2) (H3L = 5-(3-bromo-4-carboxyphenoxy)isophthalic acid, H2L1 = 5-(3-hydroxyphenoxy)isophthalic acid, 4,4'-bpy = 4,4'-bipyridine, and 1,4-bib = 1,4-bis(1H-imidazol-1-yl)benzene), were synthesized under hydrothermal conditions. Most notably, with the help of the bromine atom-inducing effect, ligand transformation was observed in the structure of complex 2, which was scrutinized thoroughly by single crystal X-ray crystallography and X-ray photoelectron spectroscopy (XPS). Strikingly, Ni(II) ions were utilized as both coordinated atoms and as a catalyst for in situ Br-OH exchange of H3L in the process, as a result of which the product would have preferred to form a one-dimensional chain. The same reaction cannot happen in 1, leading to form a two-dimensional structure. Moreover, Ni(II)-catalyzed and magnetic exchange mechanisms were well interpreted using density functional theory (DFT) calculations. Finally, complexes 1-2 show three-dimensional (3D) supramolecular structures because of intermolecular weak interactions (C-Br···π, C-H···π, C-H···O, and π···π stacking) and exhibit utterly different antiferrimagnetic coupling interactions.
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Affiliation(s)
- Chang-Dai Si
- College of Chemical Engineering and Technology, Tianshui Normal University, Tianshui741001, P. R. China
| | - Jian-Bin Zhang
- College of Chemical Engineering and Technology, Tianshui Normal University, Tianshui741001, P. R. China
| | - Feng-Feng Pan
- College of Chemical Engineering and Technology, Tianshui Normal University, Tianshui741001, P. R. China
| | - Xu Yan
- College of Chemical Engineering and Technology, Tianshui Normal University, Tianshui741001, P. R. China
| | - Peng Wang
- College of Chemical Engineering and Technology, Tianshui Normal University, Tianshui741001, P. R. China
| | - Dong-Qian Xue
- College of Chemical Engineering and Technology, Tianshui Normal University, Tianshui741001, P. R. China
| | - Xiu-Juan Li
- College of Chemical Engineering and Technology, Tianshui Normal University, Tianshui741001, P. R. China
| | - Jia-Cheng Liu
- College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou730070, People's Republic of China
| | - Kun Yuan
- College of Chemical Engineering and Technology, Tianshui Normal University, Tianshui741001, P. R. China
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Woodhouse SS, Dais TN, Etcheverry-Berríos A, Brechin EK, Lane JR, Plieger PG. Against the Norm: Non Irving–Williams Transmetalation in Transition Metal Dimers. Inorg Chem 2022; 61:17819-17827. [DOI: 10.1021/acs.inorgchem.2c03113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Sidney S. Woodhouse
- School of Natural Sciences, Massey University, Private Bag 11 222, Palmerston North4410, New Zealand
| | - Tyson N. Dais
- School of Natural Sciences, Massey University, Private Bag 11 222, Palmerston North4410, New Zealand
| | - Alvaro Etcheverry-Berríos
- EaStCHEM School of Chemistry, The University of Edinburgh, David Brewster Road, EdinburghEH93FJ, Scotland, U.K
| | - Euan K. Brechin
- EaStCHEM School of Chemistry, The University of Edinburgh, David Brewster Road, EdinburghEH93FJ, Scotland, U.K
| | - Joseph R. Lane
- Department of Chemistry, School of Science, University of Waikato, Private Bag, Hamilton3105, New Zealand
| | - Paul G. Plieger
- School of Natural Sciences, Massey University, Private Bag 11 222, Palmerston North4410, New Zealand
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Jana NC, Ghorai P, Brandão P, Jagličić Z, Panja A. Proton controlled synthesis of two dicopper(II) complexes and their magnetic and biomimetic catalytic studies together with probing the binding mode of the substrate to the metal center. Dalton Trans 2021; 50:15233-15247. [PMID: 34623364 DOI: 10.1039/d1dt02369a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
This paper describes the synthesis, and structural and spectroscopic characterizations of two doubly bridged dicopper(II) complexes, [Cu2(μ-H2L)(μ-OMe)](ClO4)4·2H2O (1) and [Cu2(μ-L)(μ-OH)](ClO4)2 (2), with a binucleating ligand (HL) derived from the Schiff base condensation of DFMP and N,N-dimethyldipropylenetriamine, and their biomimetic catalytic activities were related to CAO and phenoxazinone synthase using 3,5-di-tert-butylcatechol and o-aminophenol (OAPH), respectively, as model substrates. Structural studies reveal that the major differences in these structures appear to be from the distinct roles of the tertiary amine groups of the ligands, which are protonated in 1, whereas it coordinates the metal centers in 2. Magnetic studies disclose that two copper(II) centers are strongly antiferromagnetically coupled with slightly different J values, which is further interpreted and discussed. They exhibited very different biomimetic catalytic activities; whereas 2 is an efficient catalyst, complex 1 showed somewhat lower substrate oxidation. The higher reactivity in 2 is rationalized by the strong involvement of the tertiary amine group of the Schiff base ligand, where the substrate oxidation is favored because of the transfer of protons from the substrate to the tertiary amine group, showing the importance of the functional groups in proximity to the bimetallic active site. Emphasis was also given to probing the binding mode of the substrate using an electronically deficient tetrabromomocatechol (Br4CatH2) and the isolated compound [Cu6(μ-HL)2(μ-OH)2(Br4Cat)4](NO3)2·4H2O (3) which suggests that monodentate asymmetric binding of 3,5-di-tert-butylcatechol and OAPH occurs during the course of the catalytic reaction.
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Affiliation(s)
- Narayan Ch Jana
- Department of Chemistry, Panskura Banamali College, Panskura RS, West Bengal 721152, India.
| | - Pravat Ghorai
- Department of Chemistry, Panskura Banamali College, Panskura RS, West Bengal 721152, India. .,Department of Chemistry, Jadavpur University, Kolkata 700032, India
| | - Paula Brandão
- Department of Chemistry, CICECO - Aveiro Institute of Materials, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Zvonko Jagličić
- Institute of Mathematics, Physics and Mechanics & Faculty of Civil and Geodetic Engineering, University of Ljubljana, Jadranska 19, SI-1000 Ljubljana, Slovenia
| | - Anangamohan Panja
- Department of Chemistry, Panskura Banamali College, Panskura RS, West Bengal 721152, India. .,Department of Chemistry, Gokhale Memorial Girls' College, 1/1 Harish Mukherjee Road, Kolkata 700020, India
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Magneto-structural studies of a one dimensional Mn(II) coordination polymer derived from a flexible polydentate ligand. Polyhedron 2021. [DOI: 10.1016/j.poly.2021.115378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Jana NC, Jagličić Z, Brandão P, Adak S, Saha A, Panja A. A novel triple aqua-, phenoxo- and carboxylato-bridged dinickel( ii) complex, its magnetic properties, and comparative biomimetic catalytic studies with analogous dinickel( ii) complexes. NEW J CHEM 2021. [DOI: 10.1039/d1nj00708d] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
A unique triply bridged dinickel(ii) complex and two doubly bridged dinickel(ii) complexes are reported, and their magnetic properties and comparative biomimetic catalytic performances are studied.
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Affiliation(s)
- Narayan Ch. Jana
- Department of Chemistry
- Panskura Banamali College
- Panskura RS
- India
| | - Zvonko Jagličić
- Institute of Mathematics
- Physics and Mechanics & Faculty of Civil and Geodetic Engineering
- University of Ljubljana
- 1000 Ljubljana
- Slovenia
| | - Paula Brandão
- Department of Chemistry
- CICECO-Aveiro Institute of Materials
- University of Aveiro
- 3810-193 Aveiro
- Portugal
| | - Sarmistha Adak
- Department of Chemistry
- Panskura Banamali College
- Panskura RS
- India
- Department of Chemistry
| | - Amrita Saha
- Department of Chemistry
- Jadavpur University
- Kolkata-700032
- India
| | - Anangamohan Panja
- Department of Chemistry
- Panskura Banamali College
- Panskura RS
- India
- Department of Chemistry
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Mehrotra R, Richezzi M, Palopoli C, Hureau C, Signorella SR. Effect of coordination dissymmetry on the catalytic activity of manganese catalase mimics. J Inorg Biochem 2020; 213:111264. [PMID: 33045594 DOI: 10.1016/j.jinorgbio.2020.111264] [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: 08/02/2020] [Revised: 09/09/2020] [Accepted: 09/21/2020] [Indexed: 11/15/2022]
Abstract
Two mixed-valence Mn(II)Mn(III) complexes, [Mn2L1(OAc)2(H2O)]BPh4·2.5H2O and [Mn2L2(OAc)2]·4H2O, obtained with unsymmetrical N4O2-hexadentate L1(2-) (H2L1 = 2-(N,N-bis(2-(pyridylmethyl)aminomethyl)-6-(N-(2-hydroxybenzyl)benzylaminomethyl)-4-methylphenol) and N4O3-heptadentate L2(3-) (NaH2L2 = 2-(N,N-bis(2-(pyridylmethyl)aminomethyl)-6-(N'-(2-hydroxybenzyl)(carboxymethyl)aminomethyl)-4-methylphenol sodium salt) ligands, have been prepared and characterized. Both complexes share a μ-phenolate-bis(μ-acetate)Mn(II)Mn(III) core and N3O3-coordination sphere around the Mn(II) ion, but differ in the donor groups surrounding Mn(III) (NO4(solvent) and NO5). In non-protic solvents, these two complexes are able to disproportionate at least 3600 equiv. of H2O2 without significant decomposition, with first-order dependence on catalyst and saturation kinetics on [H2O2]. Spectroscopic monitoring of the reaction mixtures revealed the two complexes disproportionate H2O2 employing a different redox cycle, with retention of dinuclearity. The higher catalytic efficiency of [Mn2L2(OAc)2] was rationalized in terms of the larger labilizing effect of the heptadentate ligand that favors the acetate-shift and the replacement of the non-coordinating benzyl arm of L1 by a carboxylate arm in L2 which facilitates the formation of the catalyst-H2O2 adduct, placing [Mn2L2(OAc)2] as the most efficient among the phenolate-bridged diMn catalysts based on the kcat/KM criterion.
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Affiliation(s)
- Ripul Mehrotra
- IQUIR (Instituto de Quimica Rosario), Consejo Nacional de Investigaciones Cientificas y Tecnicas (CONICET), Facultad de Ciencias Bioquimicas y Farmaceuticas, Universidad Nacional de Rosario, Suipacha 531, S2002LRK Rosario, Argentina
| | - Micaela Richezzi
- IQUIR (Instituto de Quimica Rosario), Consejo Nacional de Investigaciones Cientificas y Tecnicas (CONICET), Facultad de Ciencias Bioquimicas y Farmaceuticas, Universidad Nacional de Rosario, Suipacha 531, S2002LRK Rosario, Argentina
| | - Claudia Palopoli
- IQUIR (Instituto de Quimica Rosario), Consejo Nacional de Investigaciones Cientificas y Tecnicas (CONICET), Facultad de Ciencias Bioquimicas y Farmaceuticas, Universidad Nacional de Rosario, Suipacha 531, S2002LRK Rosario, Argentina
| | - Christelle Hureau
- CNRS, LCC (Laboratoire de Chimie de Coordination) and UPS, INPT, LCC, Université de Toulouse, 205 route de Narbonne, F-31077 Toulouse, France
| | - Sandra R Signorella
- IQUIR (Instituto de Quimica Rosario), Consejo Nacional de Investigaciones Cientificas y Tecnicas (CONICET), Facultad de Ciencias Bioquimicas y Farmaceuticas, Universidad Nacional de Rosario, Suipacha 531, S2002LRK Rosario, Argentina.
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Barwiolek M, Kaczmarek-Kędziera A, Muziol TM, Jankowska D, Jezierska J, Bieńko A. Dinuclear Copper(II) Complexes with Schiff Bases Derived from 2-Hydroxy-5-Methylisophthalaldehyde and Histamine or 2-(2-Aminoethyl)pyridine and Their Application as Magnetic and Fluorescent Materials in Thin Film Deposition. Int J Mol Sci 2020; 21:E4587. [PMID: 32605160 PMCID: PMC7370049 DOI: 10.3390/ijms21134587] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2020] [Revised: 06/17/2020] [Accepted: 06/24/2020] [Indexed: 01/05/2023] Open
Abstract
Two Cu(II) complexes, 1 and 2, with tridentate Schiff bases derived from 2-hydroxy-5-methylisophthalaldehyde and histamine HL1 or 2-(2-aminoethyl)pyridine HL2, respectively, were obtained and characterized by X-ray crystallography, spectroscopic (UV-vis, fluorescence, IR, and EPR), magnetic, and thermal methods. Despite the fact that the chelate formed by the NNO ligand donors (C26-C25H2-C24H2-N23=C23H-C22-C19Ph(O1)-C2(Ph)-C3H=N3-C4H2-C5H2-C6 fragment) are identical, as well as the synthesis of Cu(II) complexes (Cu:L = 2:1 molar ratio) was performed in the same manner, the structures of the complexes differ significantly. The complex 1, {[Cu2(L1)Cl2]2[CuCl4]}·2MeCN·2H2O, consists of [Cu2(L1)Cl2]+ units in which Cu(II) ions are bridged by the HL1 ligand oxygen and each of these Cu(II) ions is connected with Cu(II) ions of the next dimeric unit via two bridging Cl- ions to form a chain structure. In the dinuclear [Cu2(L2)Cl3]0.5MeCN complex 2, each Cu(II) is asymmetrically bridged by the ligand oxygen and chloride anions, whereas the remaining chloride anions are apically bound to Cu(II) cations. In contrast to the complex 1, the square-pyramidal geometry of the both Cu(II) centers is strongly distorted. The magnetic study revealed that antiferromagnetic interactions in the complex 2 are much stronger than in the complex 1, which was corresponded with magneto-structural examination. Thin layers of the studied Cu(II) complexes were deposited on Si(111) by the spin coating method and studied by scanning electron microscopy (SEM/EDS), atomic force microscopy (AFM), and fluorescence spectroscopy. The Cu(II) complexes and their thin layers exhibited fluorescence between 489-509 nm and 460-464 nm for the compounds and the layers, respectively. Additionally, DFT calculations were performed to explain the structures and electronic spectral properties of the ligands.
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Affiliation(s)
- Magdalena Barwiolek
- Faculty of Chemistry, Nicolaus Copernicus University in Torun, 87-100 Torun, Poland; (T.M.M.); (D.J.)
| | - Anna Kaczmarek-Kędziera
- Faculty of Chemistry, Nicolaus Copernicus University in Torun, 87-100 Torun, Poland; (T.M.M.); (D.J.)
| | - Tadeusz M. Muziol
- Faculty of Chemistry, Nicolaus Copernicus University in Torun, 87-100 Torun, Poland; (T.M.M.); (D.J.)
| | - Dominika Jankowska
- Faculty of Chemistry, Nicolaus Copernicus University in Torun, 87-100 Torun, Poland; (T.M.M.); (D.J.)
| | - Julia Jezierska
- Faculty of Chemistry, University of Wroclaw, 14 Joliot-Curie, 50-383 Wroclaw, Poland; (J.J.); (A.B.)
| | - Alina Bieńko
- Faculty of Chemistry, University of Wroclaw, 14 Joliot-Curie, 50-383 Wroclaw, Poland; (J.J.); (A.B.)
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Saito T, Fujiwara M, Takano Y. Quantitative Assessment of rPM6 for Fluorine- and Chlorine-Containing Metal Complexes: Comparison with Experimental, First-Principles, and Other Semiempirical Results. Molecules 2018; 23:E3332. [PMID: 30558286 PMCID: PMC6321459 DOI: 10.3390/molecules23123332] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Revised: 12/12/2018] [Accepted: 12/14/2018] [Indexed: 11/17/2022] Open
Abstract
We report a reparameterization of PM6 parameters for fluorine and chlorine using our training set containing transition metal complexes. Spin unrestricted calculations with the resulting rPM6 (UrPM6) were examined quantitatively using two test sets: (i) the description of magnetic interactions in 25 dinuclear metal complexes and (ii) the prediction of barrier heights and reaction energies for epoxidation and fluorination reactions catalyzed by high-valent manganese-oxo species. The conventional UPM6 and UPM7 methods were also evaluated for comparison on the basis of either experimental or computational (the UB3LYP/SVP level) outcomes. The merits of UrPM6 are highlighted by both the test sets. As regards magnetic exchange coupling constants, the UrPM6 method had the smallest mean absolute errors from the experimental data (19 cm-1), followed by UPM7 (119 cm-1) and UPM6 (373 cm-1). For the epoxidation and fluorination reactions, all of the transition state searches were successful using UrPM6, while the success rates obtained by UPM6 and UPM7 were only 50%. The UrPM6-optimized stationary points also agreed well with the reference UB3LYP-optimized geometries. The accuracy for estimating reaction energies was also greatly remedied.
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Affiliation(s)
- Toru Saito
- Graduate School of Information Sciences, Hiroshima City University, 3-4-1 Ozuka-Higashi, Asa-Minami-Ku, Hiroshima 731-3194, Japan.
| | - Manami Fujiwara
- Graduate School of Information Sciences, Hiroshima City University, 3-4-1 Ozuka-Higashi, Asa-Minami-Ku, Hiroshima 731-3194, Japan.
| | - Yu Takano
- Graduate School of Information Sciences, Hiroshima City University, 3-4-1 Ozuka-Higashi, Asa-Minami-Ku, Hiroshima 731-3194, Japan.
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Massoud SS, Ledet CC, Junk T, Bosch S, Comba P, Herchel R, Hošek J, Trávníček Z, Fischer RC, Mautner FA. Dinuclear metal(ii)-acetato complexes based on bicompartmental 4-chlorophenolate: syntheses, structures, magnetic properties, DNA interactions and phosphodiester hydrolysis. Dalton Trans 2018; 45:12933-50. [PMID: 27479361 DOI: 10.1039/c6dt02596j] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
A series of dinuclear metal(ii)-acetato complexes: [Ni2(μ-L(Cl)O)(μ2-OAc)2](PF6)·3H2O (1), [Ni2(μ-L(Cl)O)(μ2-OAc)2](ClO4)·CH3COCH3 (2), [Cu2(μ-L(Cl)O)(μ2-OAc)(ClO4)](ClO4) (3), [Cu2(μ-L(Cl)O)(OAc)2](PF6)·H2O (4), [Zn2(μ-L(Cl)O)(μ2-OAc)2](PF6) (5) and [Mn2(L(Cl)-O)(μ2-OAc)2](ClO4)·H2O (6), where L(Cl)O(-) = 2,6-bis[bis(2-pyridylmethyl)aminomethyl]-4-chlorophenolate, were synthesized. The complexes were structurally characterized by spectroscopic techniques and single crystal X-ray crystallography. Six-coordinate geometries with doubly bridged acetato ligands were found in Ni(ii), Zn(ii) and Mn(ii) complexes 1, 2, 5 and 6, whereas with Cu(ii) complexes a five-coordinate species was obtained with 4, and mixed five- and six-coordinate geometries with a doubly bridged dimetal core were observed in 3. The magnetic properties of complexes 1-4 and 6 were studied at variable temperatures and revealed weak to very weak antiferromagnetic interactions in 1, 2, 4 and 6 (J = -0.55 to -9.4 cm(-1)) and ferromagnetic coupling in 3 (J = 15.4 cm(-1)). These results are consistent with DFT calculations performed at the B3LYP/def2-TZVP(-f) level of theory. Under physiological conditions, the interaction of the dinculear complexes 1-5 with supercoiled plasmid ds-DNA did not show any pronounced nuclease activity, but Ni(ii) complexes 1 and 2 revealed a strong ability to unwind the supercoiled conformation of ds-DNA. The mechanistic studies performed on the interaction of the Ni(ii) complexes with DNA demonstrated the important impact of the nickel(ii) ion in the unwinding process. In combination with the DNA study, the phosphatase activity of complexes 1, 3, and 5 was examined by the phosphodiester hydrolysis of bis(2,4-dinitrophenol)phosphate (BDNPP) in the pH range of 5.5-10.5 at 25 °C. The Michaelis-Menten kinetics performed at pH 7 and 10.7 showed that catalytic efficiencies kcat/KM (kcat = catalytic rate constant, KM = substrate binding constant) decrease in the order: Ni(ii), 1 > Zn(ii), 5 > Cu(ii), 3. A similar trend was also observed with the turnover numbers at pH = 7. The results are discussed in relation to the coordination geometry and nature of the metal center as well as the steric environment imposed by the compartmental phenoxido ligand.
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Affiliation(s)
- Salah S Massoud
- Department of Chemistry, University of Louisiana at Lafayette, Lafayette, LA 70504, USA.
| | - Catherine C Ledet
- Department of Chemistry, University of Louisiana at Lafayette, Lafayette, LA 70504, USA.
| | - Thomas Junk
- Department of Chemistry, University of Louisiana at Lafayette, Lafayette, LA 70504, USA.
| | - Simone Bosch
- Anorganisch-Chemisches Institut and Interdisziplinäres Zentrum für Wissenschaftliches Rechnen (IWR), Universität Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany.
| | - Peter Comba
- Anorganisch-Chemisches Institut and Interdisziplinäres Zentrum für Wissenschaftliches Rechnen (IWR), Universität Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany.
| | - Radovan Herchel
- Department of Inorganic Chemistry & Regional Centre of Advanced Technologies and Materials, Faculty of Science, Palacký University, 17. listopadu 12, CZ-77146 Olomouc, Czech Republic.
| | - Jan Hošek
- Department of Inorganic Chemistry & Regional Centre of Advanced Technologies and Materials, Faculty of Science, Palacký University, 17. listopadu 12, CZ-77146 Olomouc, Czech Republic.
| | - Zdeněk Trávníček
- Department of Inorganic Chemistry & Regional Centre of Advanced Technologies and Materials, Faculty of Science, Palacký University, 17. listopadu 12, CZ-77146 Olomouc, Czech Republic.
| | - Roland C Fischer
- Institut für Anorganische Chemische, Technische Universität Graz, Stremayrgasse 9/V, A-8010 Graz, Austria
| | - Franz A Mautner
- Institut für Physikalische and Theoretische Chemie, Technische Universität Graz, Stremayrgasse 9/II, A-8010, Graz, Austria.
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Arthi P, Shobana S, Srinivasan P, Prabhu D, Arulvasu C, Kalilur Rahiman A. Dinuclear manganese(II) complexes of hexaazamacrocycles bearing N-benzoylated pendant separated by aromatic spacers: Antibacterial, DNA interaction, cytotoxic and molecular docking studies. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2015; 153:247-60. [DOI: 10.1016/j.jphotobiol.2015.09.026] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2015] [Revised: 09/21/2015] [Accepted: 09/25/2015] [Indexed: 12/17/2022]
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Three discrete transition metal complexes of N-hydroxy-1,8-naphthalimidato ligand: synthesis, structure and magnetic properties. TRANSIT METAL CHEM 2015. [DOI: 10.1007/s11243-015-9980-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Arthi P, Shobana S, Srinivasan P, Mitu L, Kalilur Rahiman A. Synthesis, characterization, biological evaluation and docking studies of macrocyclic binuclear manganese(II) complexes containing 3,5-dinitrobenzoyl pendant arms. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 143:49-58. [PMID: 25710114 DOI: 10.1016/j.saa.2015.01.122] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2014] [Revised: 12/15/2014] [Accepted: 01/31/2015] [Indexed: 06/04/2023]
Abstract
A series of bis(phenoxo) bridged binuclear manganese(II) complexes of the type [Mn2L(1-3)](ClO4)2 (1-3) containing 3,5-dinitrobenzoyl pendant-arms have been synthesized by cyclocondensation of 2,6-diformyl-4-R-phenols (where R=CH3, C(CH3)3 or Br) with 2,2'-3,5-dinitrobenzoyliminodi(ethylamine) trihydrochloride in the presence of manganese(II) perchlorate. The IR spectra of complexes indicate the presence of uncoordinated perchlorate anions. The UV-Vis spectra of complexes suggest the distorted octahedral geometry around manganese(II) nuclei. The EPR spectra of Mn(II) complexes show a broad signal with g value 2.03-2.04, which is characteristic for octahedral high spin Mn(2+) complex. The observed room temperature magnetic moment values of the Mn(II) complexes (5.60-5.62B.M.) are less than the normal value (5.92B.M.), indicating weak antiferromagnetic coupling interaction between the two metal ions. Electrochemical studies of the complexes show two distinct quasi-reversible one electron transfer processes in the cathodic (E(1)pc=-0.73 to -0.76V, E(2)pc=-1.30 to -1.36V), and anodic (E(1)pa=1.02-1.11V, E(2)pa=1.32-1.79V) potential regions. Antibacterial efficacy of complexes have been screened against four Gram (-ve) and two Gram (+ve) bacterial strains. The DNA interaction studies suggest that these complexes bind with CT-DNA by intercalation, giving the binding affinity in the order 1>2>3. All the complexes display significant cleavage activity against circular plasmid pBR322 DNA. Docking simulation was performed to insert complexes into the crystal structure of EGFR tyrosine kinase and B-DNA at active site to determine the probable binding mode.
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Affiliation(s)
- P Arthi
- Post-Graduate and Research Department of Chemistry, The New College (Autonomous), Chennai 600 014, India
| | - S Shobana
- Department of Bioinformatics, School of Bioengineering, SRM University, Kattankulathur 603 203, India
| | - P Srinivasan
- Department of Bioinformatics, Alagappa University, Karaikudi 630 003, India
| | - L Mitu
- Department of Chemistry, Faculty of Science, University of Pitesti, Pitesti 110 040, Romania
| | - A Kalilur Rahiman
- Post-Graduate and Research Department of Chemistry, The New College (Autonomous), Chennai 600 014, India.
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14
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Massoud SS, Junk T, Louka FR, Herchel R, Trávníček Z, Fischer RC, Mautner FA. Synthesis, structure and magnetic characterization of dinuclear copper(ii) complexes bridged by bicompartmental phenolate. RSC Adv 2015. [DOI: 10.1039/c5ra19358c] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Two series of bridged-phenoxido dinuclear Cu(ii) complexes were structurally and magnetically characterized: [Cu2(μ-LCl-O)(μ-X)](ClO4)2 (X = OH−, C3H3N2−, O2P(OC6H5)2−) and [Cu2(μ-LR-O)(X)2]PF6·2CH3CN (R = Cl, CH3 and X = dca) complexes.
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Affiliation(s)
- Salah S. Massoud
- Department of Chemistry
- University of Louisiana at Lafayette
- Lafayette
- USA
| | - Thomas Junk
- Department of Chemistry
- University of Louisiana at Lafayette
- Lafayette
- USA
| | - Febee R. Louka
- Department of Chemistry
- University of Louisiana at Lafayette
- Lafayette
- USA
| | - Radovan Herchel
- Department of Inorganic Chemistry & Regional Centre of Advanced Technologies and Materials
- Faculty of Science
- Palacký University
- CZ-77146 Olomouc
- Czech Republic
| | - Zdeněk Trávníček
- Department of Inorganic Chemistry & Regional Centre of Advanced Technologies and Materials
- Faculty of Science
- Palacký University
- CZ-77146 Olomouc
- Czech Republic
| | - Roland C. Fischer
- Institut für Anorganische Chemische
- Technische Universität Graz
- A-8010 Graz
- Austria
| | - Franz A. Mautner
- Institut für Physikalische and Theoretische Chemie
- Technische Universität Graz
- Graz
- Austria
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15
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Massoud SS, Spell M, Ledet CC, Junk T, Herchel R, Fischer RC, Trávníček Z, Mautner FA. Magnetic and structural properties of dinuclear singly bridged-phenoxido metal(ii) complexes. Dalton Trans 2015; 44:2110-21. [DOI: 10.1039/c4dt03508a] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Five new dinuclear bridged-phenoxido dichlorido-metal(ii) complexes [M2(μ-LClO)(X)2Cl2]PF6/ClO4 complexes, where M(ii) = Co, Ni, Cu (1–4) and Zn (5); X = CH3OH, H2O or 0 were synthesized and structurally characterized. Complexes 1–4 revealed weak to moderate antiferromagnetic coupling.
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Affiliation(s)
- Salah S. Massoud
- Department of Chemistry
- University of Louisiana at Lafayette
- Lafayette
- USA
| | - Mark Spell
- Department of Chemistry
- University of Louisiana at Lafayette
- Lafayette
- USA
| | | | - Thomas Junk
- Department of Chemistry
- University of Louisiana at Lafayette
- Lafayette
- USA
| | - Radovan Herchel
- Department of Inorganic Chemistry & Regional Centre of Advanced Technologies and Materials
- Faculty of Science
- Palacký University
- CZ-77146 Olomouc
- Czech Republic
| | - Roland C. Fischer
- Institut für Anorganische Chemische
- Technische Universität Graz
- A-8010 Graz
- Austria
| | - Zdeněk Trávníček
- Department of Inorganic Chemistry & Regional Centre of Advanced Technologies and Materials
- Faculty of Science
- Palacký University
- CZ-77146 Olomouc
- Czech Republic
| | - Franz A. Mautner
- Institut für Physikalische and Theoretische Chemie
- Technische Universität Graz
- Graz
- Austria
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16
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Dai L, You W, Li Y, Liu L, Ge X, Che W. A new Keggin-templated heterometal-oxide-based organic–inorganic hybrid compound. Inorganica Chim Acta 2014. [DOI: 10.1016/j.ica.2014.01.030] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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17
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Song J, Shu HM, Hu HM, Liu B, Han ZX, Xue GL. Synthesis, Crystal Structure, and Magnetic Properties of Two Manganese(II) and Cobalt(II) Coordination Polymers Based on Biphenyl-3, 3′,4, 4′-tetracarboxylic Acid. Z Anorg Allg Chem 2013. [DOI: 10.1002/zaac.201300516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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18
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Jana A, Aliaga-Alcalde N, Ruiz E, Mohanta S. Structures, Magnetochemistry, Spectroscopy, Theoretical Study, and Catechol Oxidase Activity of Dinuclear and Dimer-of-Dinuclear Mixed-Valence MnIIIMnII Complexes Derived from a Macrocyclic Ligand. Inorg Chem 2013; 52:7732-46. [DOI: 10.1021/ic400916h] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Arpita Jana
- Department of Chemistry, University of Calcutta, 92 A. P. C. Road, Kolkata 700
009, India
| | - Núria Aliaga-Alcalde
- Institució Catalana de Recerca i Estudis Avançats (ICREA), Institut de Ciència de Materials de Barcelona (ICMAB-CSIC)
Campus de la UAB, 08193 Bellaterra, Spain
| | - Eliseo Ruiz
- Departament de Química Inorgànica and
Institut de Recerca de Química Teòrica i Computacional, Universitat de Barcelona, Diagonal 645, E-08028 Barcelona,
Spain
| | - Sasankasekhar Mohanta
- Department of Chemistry, University of Calcutta, 92 A. P. C. Road, Kolkata 700
009, India
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19
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Saito H, Ishisone A, Horikawa Y, Ishiyama T, Higashimura H, Sugahara Y. Sol–Gel-derived Bridged Polysilsesquioxane as a Hydrogen Peroxide Decomposition Catalyst: Immobilization of a Dimanganese Complex and Its Improved Thermal Stability. CHEM LETT 2012. [DOI: 10.1246/cl.2012.591] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Hitomi Saito
- Department of Applied Chemistry, School of Advanced Science and Engineering, Waseda University
| | - Akira Ishisone
- Department of Applied Chemistry, School of Advanced Science and Engineering, Waseda University
| | - Yuhei Horikawa
- Department of Applied Chemistry, School of Advanced Science and Engineering, Waseda University
| | - Takeshi Ishiyama
- Advanced Materials Research Laboratory, Sumitomo-Chemical Co., Ltd
| | | | - Yoshiyuki Sugahara
- Department of Applied Chemistry, School of Advanced Science and Engineering, Waseda University
- Kagami Memorial Laboratory for Materials Science and Technology, Waseda University
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20
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21
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Arora H, Barman SK, Lloret F, Mukherjee R. Isostructural Dinuclear Phenoxo-/Acetato-Bridged Manganese(II), Cobalt(II), and Zinc(II) Complexes with Labile Sites: Kinetics of Transesterification of 2-Hydroxypropyl-p-nitrophenylphosphate. Inorg Chem 2012; 51:5539-53. [DOI: 10.1021/ic201971t] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Himanshu Arora
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208 016, India
| | - Suman K. Barman
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208 016, India
| | - Francesc Lloret
- Departament de Quı́mica Inorgànica/Instituto de
Ciencia Molecular (ICMOL), Universitat de València, Polígono de la Coma, s/n, 46980-Paterna
(València), Spain
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22
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Does B3LYP correctly describe magnetism of manganese complexes with various oxidation numbers and various structural motifs? Chem Phys Lett 2012. [DOI: 10.1016/j.cplett.2011.11.025] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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23
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Wang LL, Sun YM, Lin XJ, Liu CB. DFT-BS study on the magnetic coupling interaction in a series of (R-Bpmp)MnII2(μ-OAc)2 complexes. Polyhedron 2011. [DOI: 10.1016/j.poly.2011.02.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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24
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Li J, Ji CC, Huang LF, Li YZ, Zheng HG. Syntheses, structures, luminescent and magnetic properties of a novel class of metal complexes constructed from 2-(2-pyridyl)benzimidazole and 5-hydroxy-1,3-benzenedicarboxylic acid. Inorganica Chim Acta 2011. [DOI: 10.1016/j.ica.2011.02.092] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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25
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Seidler-Egdal RK, Johansson FB, Veltzé S, Skou EM, Bond AD, McKenzie CJ. Tunability of the MIIMIII/MII2 and MIII2/MIIMIII (M = Mn, Co) couples in bis-μ-O,O′-carboxylato-μ-OR bridged complexes. Dalton Trans 2011; 40:3336-45. [DOI: 10.1039/c0dt01552k] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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26
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Jerzykiewicz LB, Utko J, Duczmal M, Starynowicz P, Sobota P. Tetranuclear Manganese Complexes with [MnII4] and [MnII2MnIII2] Units: Syntheses, Structures, Magnetic Properties, and DFT Study. Eur J Inorg Chem 2010. [DOI: 10.1002/ejic.201000381] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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27
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Gangopadhyay S, Masunov AE, Poalelungi E, Leuenberger MN. Weak antiferromagnetic coupling in molecular ring is predicted correctly by density functional theory plus Hubbard U. J Chem Phys 2010; 132:244104. [DOI: 10.1063/1.3421645] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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28
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Smith SJ, Riley MJ, Noble CJ, Hanson GR, Stranger R, Jayaratne V, Cavigliasso G, Schenk G, Gahan LR. Structural and Catalytic Characterization of a Heterovalent Mn(II)Mn(III) Complex That Mimics Purple Acid Phosphatases. Inorg Chem 2009; 48:10036-48. [DOI: 10.1021/ic9005086] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | | | - Christopher J. Noble
- Centre for Magnetic Resonance, The University of Queensland, Brisbane 4072, Australia
| | - Graeme R. Hanson
- Centre for Magnetic Resonance, The University of Queensland, Brisbane 4072, Australia
| | - Robert Stranger
- Research School of Chemistry, Australian National University, Canberra 0200, Australia
| | - Vidura Jayaratne
- Research School of Chemistry, Australian National University, Canberra 0200, Australia
| | - Germán Cavigliasso
- Research School of Chemistry, Australian National University, Canberra 0200, Australia
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29
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Collomb M, Deronzier A. Electro‐ and Photoinduced Formation and Transformation of Oxido‐Bridged Multinuclear Mn Complexes. Eur J Inorg Chem 2009. [DOI: 10.1002/ejic.200801141] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Marie‐Noëlle Collomb
- Université Joseph Fourier Grenoble 1/CNRS, Département de Chimie Moléculaire, UMR‐5250, Institut de Chimie Moléculaire de Grenoble FR‐CNRS‐2607, Laboratoire de Chimie Inorganique Redox B. P. 53, 38041 Grenoble Cedex 9, France
| | - Alain Deronzier
- Université Joseph Fourier Grenoble 1/CNRS, Département de Chimie Moléculaire, UMR‐5250, Institut de Chimie Moléculaire de Grenoble FR‐CNRS‐2607, Laboratoire de Chimie Inorganique Redox B. P. 53, 38041 Grenoble Cedex 9, France
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30
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Biava H, Palopoli C, Duhayon C, Tuchagues JP, Signorella S. Synthesis, Structure, and Catalase-Like Activity of Dimanganese(III) Complexes of 1,5-Bis[(2-hydroxy-5-X-benzyl)(2-pyridylmethyl)amino]pentan-3-ol (X = H, Br, OCH3). Inorg Chem 2009; 48:3205-14. [DOI: 10.1021/ic8019793] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hernán Biava
- Instituto de Química Rosario - CONICET, Universidad Nacional de Rosario, Suipacha 531, S2002LRK Rosario, Argentina, and Laboratoire de Chimie de Coordination, UPR CNRS 8241, 205 Route de Narbonne, 31077 Toulouse Cedex 04, France
| | - Claudia Palopoli
- Instituto de Química Rosario - CONICET, Universidad Nacional de Rosario, Suipacha 531, S2002LRK Rosario, Argentina, and Laboratoire de Chimie de Coordination, UPR CNRS 8241, 205 Route de Narbonne, 31077 Toulouse Cedex 04, France
| | - Carine Duhayon
- Instituto de Química Rosario - CONICET, Universidad Nacional de Rosario, Suipacha 531, S2002LRK Rosario, Argentina, and Laboratoire de Chimie de Coordination, UPR CNRS 8241, 205 Route de Narbonne, 31077 Toulouse Cedex 04, France
| | - Jean-Pierre Tuchagues
- Instituto de Química Rosario - CONICET, Universidad Nacional de Rosario, Suipacha 531, S2002LRK Rosario, Argentina, and Laboratoire de Chimie de Coordination, UPR CNRS 8241, 205 Route de Narbonne, 31077 Toulouse Cedex 04, France
| | - Sandra Signorella
- Instituto de Química Rosario - CONICET, Universidad Nacional de Rosario, Suipacha 531, S2002LRK Rosario, Argentina, and Laboratoire de Chimie de Coordination, UPR CNRS 8241, 205 Route de Narbonne, 31077 Toulouse Cedex 04, France
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31
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A novel (μ-OAc)2 bridged unsymmetric coordinated binuclear Mn(II) macrocyclic complex with ligating pendant-arm. INORG CHEM COMMUN 2008. [DOI: 10.1016/j.inoche.2008.09.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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32
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33
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Soler M, McCusker JK. Distinguishing between Dexter and Rapid Sequential Electron Transfer in Covalently Linked Donor−Acceptor Assemblies. J Am Chem Soc 2008; 130:4708-24. [DOI: 10.1021/ja077096i] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Monica Soler
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824
| | - James K. McCusker
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824
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34
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Moon D, Kim J, Oh M, Suh BJ, Lah MS. Synthesis and characterization of a bis-μ,η1-carboxylate-bridged dinuclear manganese(II) complex containing a tetradentate tripodal ligand, N-(benzimidazol-2-ylmethyl)iminodiacetic acid. Polyhedron 2008. [DOI: 10.1016/j.poly.2007.09.028] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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