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Gouré E, Gerey B, Astudillo CN, Pécaut J, Sirach S, Molton F, Fortage J, Collomb MN. Self-Assembled Heterometallic Complexes by Incorporation of Calcium or Strontium Ion into a Manganese(II) 12-Metallacrown-3 Framework Supported by a Tripodal Ligand with Pyridine-Carboxylate Motifs: Stability in Their Manganese(III) Oxidized Form. Inorg Chem 2021; 60:7922-7936. [PMID: 34014651 DOI: 10.1021/acs.inorgchem.1c00457] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We report on the isolation of a new family of μ-carboxylato-bridged metallocrown (MC) compounds by self-assembly of the recently isolated hexadentate tris(2-pyridylmethyl)amine ligand tpada2- incorporating two carboxylate units with metal cations. Twelve-membered MCs of manganese of the type 12-MC-3, namely, [{MnII(tpada)}3(M)(H2O)n]2+ (Mn3M) (M = Mn2+ (n = 0), Ca2+ (n = 1), or Sr2+ (n = 2)), were structurally characterized. The metallamacrocycles connectivity consisting in three -[Mn-O-C-O]- repeating units is provided by one carboxylate unit of the three tpada2- ligands, while the second carboxylate coordinated a fourth cation in the central cavity of the MC, Mn2+ or an alkaline earth metal, Ca2+ or Sr2+. Mn3Ca and {Mn3Sr}2 join the small family of heterometallic manganese-calcium complexes and even rarer manganese-strontium complexes as models of the OEC of photosystem II (PSII). A 8-MC-4 of strontium of the molecular wheel type with four -[Sr-O]- repeating unit was also isolated by self-assembly of the tpada2- ligand with Sr2+. This complex, namely, [Sr(tpada)(OH2)]4 (Sr4), does not incorporate any cation in the central cavity but instead four water molecules coordinated to each Sr2+. Electrochemical investigations coupled to UV-visible absorption and EPR spectroscopies as well as electrospray mass spectrometry reveal the stability of the 12-MC-3 tetranuclear structures in solution, both in the initial oxidation state, MnII3M, as well as in the three-electrons oxidized state, MnIII3M. Indeed, the cyclic voltammogram of all these complexes exhibits three-successive reversible oxidation waves between +0.5 and +0.9 V corresponding to the successive one-electron oxidation of the Mn(II) ion into Mn(III) of the three {Mn(tpada)} units constituting the ring, which are fully maintained after bulk electrolysis.
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Affiliation(s)
- Eric Gouré
- Univ. Grenoble Alpes, CNRS, DCM, 38000 Grenoble, France
| | - Bertrand Gerey
- Univ. Grenoble Alpes, CNRS, DCM, 38000 Grenoble, France.,Univ. Grenoble Alpes, CEA, CNRS, IRIG, SyMMES, 38000 Grenoble, France
| | | | - Jacques Pécaut
- Univ. Grenoble Alpes, CEA, CNRS, IRIG, SyMMES, 38000 Grenoble, France
| | - Selim Sirach
- Univ. Grenoble Alpes, CNRS, DCM, 38000 Grenoble, France
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2
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Bhattacharyya MK, Gogoi A, Chetry S, Dutta D, Verma AK, Sarma B, Franconetti A, Frontera A. Antiproliferative evaluation and supramolecular association in Mn(II) and Zn(II) bipyridine complexes: Combined experimental and theoretical studies. J Inorg Biochem 2019; 200:110803. [DOI: 10.1016/j.jinorgbio.2019.110803] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Revised: 08/07/2019] [Accepted: 08/18/2019] [Indexed: 12/11/2022]
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3
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Shova S, Vlad A, Cazacu M, Krzystek J, Ozarowski A, Malček M, Bucinsky L, Rapta P, Cano J, Telser J, Arion VB. Dinuclear manganese(iii) complexes with bioinspired coordination and variable linkers showing weak exchange effects: a synthetic, structural, spectroscopic and computation study. Dalton Trans 2019; 48:5909-5922. [DOI: 10.1039/c8dt04596h] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
High-resolution HFEPR indicates weak exchange interactions between MnIII ions in agreement with DFT calculations.
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Affiliation(s)
- Sergiu Shova
- Inorganic Polymers Department
- “Petru Poni” Institute of Macromolecular Chemistry
- Iasi 700487
- Romania
| | - Angelica Vlad
- Inorganic Polymers Department
- “Petru Poni” Institute of Macromolecular Chemistry
- Iasi 700487
- Romania
| | - Maria Cazacu
- Inorganic Polymers Department
- “Petru Poni” Institute of Macromolecular Chemistry
- Iasi 700487
- Romania
| | - J. Krzystek
- National High Magnetic Field Laboratory
- Florida State University
- Tallahassee
- USA
| | - Andrew Ozarowski
- National High Magnetic Field Laboratory
- Florida State University
- Tallahassee
- USA
| | - Michal Malček
- Institute of Physical Chemistry and Chemical Physics
- Slovak University of Technology in Bratislava
- 81237 Bratislava
- Slovak Republic
| | - Lukas Bucinsky
- Institute of Physical Chemistry and Chemical Physics
- Slovak University of Technology in Bratislava
- 81237 Bratislava
- Slovak Republic
| | - Peter Rapta
- Institute of Physical Chemistry and Chemical Physics
- Slovak University of Technology in Bratislava
- 81237 Bratislava
- Slovak Republic
| | - Joan Cano
- Institut de Ciència Molecular
- Universitat de València
- 46980 Paterna
- Spain
| | - Joshua Telser
- Department of Biological
- Physical and Health Sciences
- Roosevelt University
- Chicago
- USA
| | - Vladimir B. Arion
- Institute of Inorganic Chemistry of the University of Vienna
- A1090 Vienna
- Austria
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4
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Misawa-Suzuki T, Matsuya K, Watanabe T, Nagao H. Triply bridged dinuclear ruthenium complexes bearing alkylbis(2-pyridylmethyl)amine in the mixed-valence state of Ru(ii)–Ru(iii). Dalton Trans 2018; 47:16182-16189. [DOI: 10.1039/c8dt03507e] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Five diruthenium complexes in the mixed-valence state of Ru(ii)–Ru(iii), triply bridged by halogeno and methoxido ligands, were newly synthesized and compared.
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Affiliation(s)
- T. Misawa-Suzuki
- Department of Materials and Life Sciences
- Sophia University
- Tokyo 102-8554
- Japan
| | - K. Matsuya
- Department of Materials and Life Sciences
- Sophia University
- Tokyo 102-8554
- Japan
| | - T. Watanabe
- Department of Materials and Life Sciences
- Sophia University
- Tokyo 102-8554
- Japan
| | - H. Nagao
- Department of Materials and Life Sciences
- Sophia University
- Tokyo 102-8554
- Japan
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Lan YQ, Xiao KJ, Wu YJ, Chen QY. Characterization, catalyzed water oxidation and anticancer activities of a NIR BODIPY-Mn polymer. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2017; 177:28-32. [PMID: 28113138 DOI: 10.1016/j.saa.2017.01.030] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2016] [Revised: 12/24/2016] [Accepted: 01/15/2017] [Indexed: 06/06/2023]
Abstract
To obtain near-IR absorbing biomaterials as fluorescence cellular imaging and anticancer agents for hypoxic cancer cell, a nano NIR fluorescence Mn(III/IV) polymer (PMnD) was spectroscopically characterized. The PMnD shows strong emission at 661nm when excited with 643nm. Furthermore, PMnD can catalyze water oxidation to generate dioxygen when irradiated by red LED light (10W). In particular, the PMnD can enter into HepG-2 cells and mitochondria. Both anticancer activity and the inhibition of the expression of HIF-1α for PMnD were concentration dependent. Our results demonstrate that PMnD can be developed as mitochondria targeted imaging agents and new inhibitors for HIF-1 in hypoxic cancer cells.
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Affiliation(s)
- Ya-Quan Lan
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Ke-Jing Xiao
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Yun-Jie Wu
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Qiu-Yun Chen
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China.
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6
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Tamski MA, Dale MW, Breeze BG, Macpherson JV, Unwin PR, Newton ME. Quantitative measurements in electrochemical electron paramagnetic resonance. Electrochim Acta 2016. [DOI: 10.1016/j.electacta.2016.07.114] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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7
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Fontanet M, Rodríguez M, Fontrodona X, Romero I, Teixidor F, Viñas C, Aliaga‐Alcalde N, Matějíček P. Water‐Soluble Manganese Inorganic Polymers: The Role of Carborane Clusters and Producing Large Structural Adjustments from Minor Molecular Changes. Chemistry 2014; 20:13993-4003. [DOI: 10.1002/chem.201403458] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2014] [Indexed: 11/11/2022]
Affiliation(s)
- Mònica Fontanet
- Departament de Química and Serveis Tècnics de Recerca, Universitat de Girona, Campus de Montilivi, 17071 Girona (Spain)
| | - Montserrat Rodríguez
- Departament de Química and Serveis Tècnics de Recerca, Universitat de Girona, Campus de Montilivi, 17071 Girona (Spain)
| | - Xavier Fontrodona
- Departament de Química and Serveis Tècnics de Recerca, Universitat de Girona, Campus de Montilivi, 17071 Girona (Spain)
| | - Isabel Romero
- Departament de Química and Serveis Tècnics de Recerca, Universitat de Girona, Campus de Montilivi, 17071 Girona (Spain)
| | - Francesc Teixidor
- Institut de Ciencia de Materials de Barcelona, ICMAB‐CSIC, Campus UAB, 08193 Bellaterra (Spain)
| | - Clara Viñas
- Institut de Ciencia de Materials de Barcelona, ICMAB‐CSIC, Campus UAB, 08193 Bellaterra (Spain)
| | - Núria Aliaga‐Alcalde
- Institut de Ciencia de Materials de Barcelona, ICMAB‐CSIC, Campus UAB, 08193 Bellaterra (Spain)
- ICREA, Passeig Lluis Companys 23, 08010 Barcelona (Spain)
| | - Pavel Matějíček
- Department of Physical and Macromolecular Chemistry, Faculty of Sciences, Charles University in Prague, Hlavova 2030, 128 40 Prague 2 (Czech Republic)
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8
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Manganese(II) complexes of quinoline derivatives: characterization, catalase activity, interaction with mitochondria and anticancer activity. TRANSIT METAL CHEM 2014. [DOI: 10.1007/s11243-014-9876-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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9
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Synthesis, cytotoxicity for mimics of catalase: Inhibitors of lactate dehydrogenase and hypoxia inducible factor. Eur J Med Chem 2014; 80:1-7. [DOI: 10.1016/j.ejmech.2014.04.035] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2013] [Revised: 03/12/2014] [Accepted: 04/10/2014] [Indexed: 11/22/2022]
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10
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Escrivà E, Lezama L, Soto L, Sancho A, Folgado JV, de Arellano CR. A novel dinuclear manganese(II) compound incorporating two bis(imidazolyl) based ligands with single μ2-η1:η1-carboxylato bridges. Molecular and crystal structure and magnetic properties of [Mn2Cl(BIP)(HBIMAM)(H2O)5]Cl3·4H2O (BIP=3,3-di(2-1H-2-imidazolyl)propanoate; BIMAM=N-methyldi(1H-2-imidazolyl)methanamine). Polyhedron 2014. [DOI: 10.1016/j.poly.2013.11.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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11
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Tomter AB, Zoppellaro G, Andersen NH, Hersleth HP, Hammerstad M, Røhr ÅK, Sandvik GK, Strand KR, Nilsson GE, Bell CB, Barra AL, Blasco E, Le Pape L, Solomon EI, Andersson KK. Ribonucleotide reductase class I with different radical generating clusters. Coord Chem Rev 2013. [DOI: 10.1016/j.ccr.2012.05.021] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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12
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13
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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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14
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Zhou DF, Chen QY, Fu HJ, Yan Q. The formation of a luminescent Mn(III,IV) intermediate of bis(2-pyridylmethyl)amine and acetone assistant its intramolecular C-H oxidation. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2011; 81:604-608. [PMID: 21782502 DOI: 10.1016/j.saa.2011.06.062] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2010] [Revised: 06/19/2011] [Accepted: 06/23/2011] [Indexed: 05/31/2023]
Abstract
The dinuclear Mn(II) complexes of bis(2-pyridylmethyl)amine (dpa) reacted with H(2)O(2) producing a fluorescent dioxodimanganese(III,IV) intermediate [(dpa)Mn(2)Cl(2)(μ-O(2))(OHdpa)](3+), which was characterized by IR, UV, ESR, ES-MS and fluorescence spectra. ES-MS data show that this intermediate could bind an acetone molecule forming dioxodimanganese(III,IV)-acetone adduct [(dpa)Mn(2)Cl(2)(μ-O)(CH(3)COCH(3))(OHdpa)](3+). The emission of dioxodimanganese(III,IV)-acetone at 378 nm was stronger than that of dioxodimanganese(III,IV) complex. Excess acetone molecules promoted the intramolecular C-H oxidation and the formation of one dimensional chain Mn(II) complex [(2-picolinic-acid)Mn(H(2)O)(2)Cl(O)](n) through possible intramolecular oxygen transfer reaction.
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Affiliation(s)
- Dong-Fang Zhou
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China
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15
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Qian J, Wang L, Tian J, Yan S. A new N, N-bis(2-pyridylmethyl)methylamine iron(III) complex: synthesis, structure, DNA binding, and nuclease activity. J COORD CHEM 2011. [DOI: 10.1080/00958972.2011.602674] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- Jing Qian
- a College of Chemistry, Tianjin Normal University , Tianjin 300387 , P.R. China
| | - Liping Wang
- b Department of Chemistry , Baoding College , Baoding 071000 , P.R. China
| | - Jinlei Tian
- c College of Chemistry , Nankai University , Tianjin 300071 , P.R. China
| | - Shiping Yan
- c College of Chemistry , Nankai University , Tianjin 300071 , P.R. China
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16
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Zhou DF, Chen QY, Qi Y, Fu HJ, Li Z, Zhao KD, Gao J. Anticancer Activity, Attenuation on the Absorption of Calcium in Mitochondria, and Catalase Activity for Manganese Complexes of N-Substituted Di(picolyl)amine. Inorg Chem 2011; 50:6929-37. [PMID: 21710973 DOI: 10.1021/ic200004y] [Citation(s) in RCA: 87] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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17
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Qian J, Wang LP, Tian JL, Yan SP. Synthesis, crystal structure, spectroscopy, and nuclease activity of copper(II) complexes containing N,N-bis(2-pyridylmethyl)amine ligand. J COORD CHEM 2011. [DOI: 10.1080/00958972.2011.585643] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Jing Qian
- a College of Chemistry, Tianjin Normal University , 300387, Tianjin , P.R. China
| | - Li-Ping Wang
- b Department of Chemistry , Baoding College , 071000, Baoding , P.R. China
| | - Jin-Lei Tian
- c Department of Chemistry , Nankai University , 300071, Tianjin , P.R. China
| | - Shi-Ping Yan
- c Department of Chemistry , Nankai University , 300071, Tianjin , P.R. China
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18
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Mola J, Dinoi C, Sala X, Rodríguez M, Romero I, Parella T, Fontrodona X, Llobet A. A new dinuclear Ru-Hbpp based water oxidation catalyst with a trans-disposition of the Ru-OH. Dalton Trans 2011; 40:3640-6. [DOI: 10.1039/c0dt00964d] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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19
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Qian J, Tian JL, Feng L, Gu W, Zhao XJ, Yan SP. Synthesis, crystal structure, magnetic property, and nuclease activity of a binuclear iron(III) complex. J COORD CHEM 2010. [DOI: 10.1080/00958970802483632] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Jing Qian
- a Department of Chemistry , College of Chemistry and Biology, Tianjin Normal University , Tianjin, 300387, P.R. China
- b Department of Chemistry , Nankai University , Tianjin, P.R. China
| | - Jin-Lei Tian
- b Department of Chemistry , Nankai University , Tianjin, P.R. China
| | - Li Feng
- b Department of Chemistry , Nankai University , Tianjin, P.R. China
- c Department of Chemistry , Tianjin University of Traditional Chinese Medicine , Tianjin, 300193, P.R. China
| | - Wen Gu
- b Department of Chemistry , Nankai University , Tianjin, P.R. China
| | - Xiao-Jun Zhao
- a Department of Chemistry , College of Chemistry and Biology, Tianjin Normal University , Tianjin, 300387, P.R. China
| | - Shi-Ping Yan
- b Department of Chemistry , Nankai University , Tianjin, P.R. China
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Qian J, Xie MJ, Feng L, Tian JL, Shang J, Zhang Y, Yan SP. Synthesis, structure, magnetic, and spectroscopic properties of a chloro-bridged trinuclear copper(II) complex: {[Cu(bpea)Cl]2CuCl4}. J COORD CHEM 2010. [DOI: 10.1080/00958972.2010.501862] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Jing Qian
- a College of Chemistry & Life Science, Tianjin Normal University , 300387, Tianjin, China
| | - Ming-Jin Xie
- c Department of Chemistry , Yunnan University , 650091, Kunming, China
| | - Li Feng
- d Department of Medicine , Tianjin University of Traditional Chinese Medicine , 300193, Tianjin, China
| | - Jin-Lei Tian
- b Department of Chemistry , Nankai University , 300071, Tianjin, China
| | - Jing Shang
- a College of Chemistry & Life Science, Tianjin Normal University , 300387, Tianjin, China
| | - Yuan Zhang
- a College of Chemistry & Life Science, Tianjin Normal University , 300387, Tianjin, China
| | - Shi-Ping Yan
- b Department of Chemistry , Nankai University , 300071, Tianjin, China
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21
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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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22
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Li R, Huang F, Jiang X, Liu M, Song Y, Liu H, Zhang J. Catalase-like catalytic reaction of the dinuclear manganese–salen complex. J COORD CHEM 2010. [DOI: 10.1080/00958972.2010.483611] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Rong Li
- a Department of Pharmaceutical Sciences , School of Pharmacy, State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology , Shanghai 200237, P.R. China
| | - Fuping Huang
- b Department of Chemistry , Nankai University , Tianjin 300071, P.R. China
| | - Xiaojun Jiang
- a Department of Pharmaceutical Sciences , School of Pharmacy, State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology , Shanghai 200237, P.R. China
| | - Mingyuan Liu
- a Department of Pharmaceutical Sciences , School of Pharmacy, State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology , Shanghai 200237, P.R. China
| | - Yanying Song
- a Department of Pharmaceutical Sciences , School of Pharmacy, State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology , Shanghai 200237, P.R. China
| | - Hui Liu
- a Department of Pharmaceutical Sciences , School of Pharmacy, State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology , Shanghai 200237, P.R. China
| | - Jingyan Zhang
- a Department of Pharmaceutical Sciences , School of Pharmacy, State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology , Shanghai 200237, P.R. China
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Gómez V, Corbella M, Font-Bardia M, Calvet T. A μ1,1- or μ1,3-carboxylate bridge makes the difference in the magnetic properties of dinuclear MnII compounds. Dalton Trans 2010; 39:11664-74. [DOI: 10.1039/c0dt00902d] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Singla M, Mathur P. Oxidation of alcohols using a manganese (II) complex based on a pentakis benzimidazole amide ligand. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2009; 74:536-543. [PMID: 19660981 DOI: 10.1016/j.saa.2009.07.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2008] [Revised: 05/13/2009] [Accepted: 07/01/2009] [Indexed: 05/28/2023]
Abstract
A pentakis benzimidazole based penta-amide ligand diethylenetriamine-N,N,N',N',N''-pentakis(2-methyl benzimidazolyl)penta-amide [GBDTPA] has been synthesized and utilized to prepare Mn (II) complexes of general composition [Mn(2)(GBDTPA)X(4)], where X is an exogenous anionic ligand (X = Cl(-), NO(3)(-) and Br(-)). The oxidation of alcohols has been investigated using [Mn(2)(GBDTPA)Cl(4)] as the catalyst and TBHP as an alternate source of oxygen. The respective aldehydic products have been isolated and characterized by (1)H NMR.
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Affiliation(s)
- Manisha Singla
- Department of Chemistry, Delhi University, Delhi 110007, India.
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Qian J, Tian JL, Feng L, Gu W, Zhao XJ, Yan SP. Syntheses, structures, and spectroscopic properties of binuclear copper(II) complexes containing N,N-bis(2-pyridylmethyl)amine ligands. J COORD CHEM 2009. [DOI: 10.1080/00958970903059984] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Jing Qian
- a College of Chemistry & Life , Tianjin Normal University , Tianjin 300387, P.R. China
| | - Jin-Lei Tian
- b Department of Chemistry , Nankai University , Tianjin 300071, P.R. China
| | - Li Feng
- c Department of Chemistry , Tianjin Traditional Chinese Medicine University , Tianjin 300193, P.R. China
| | - Wen Gu
- b Department of Chemistry , Nankai University , Tianjin 300071, P.R. China
| | - Xiao-Jun Zhao
- a College of Chemistry & Life , Tianjin Normal University , Tianjin 300387, P.R. China
| | - Shi-Ping Yan
- b Department of Chemistry , Nankai University , Tianjin 300071, P.R. China
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Li JF, Chen QY. Synthesis, spectroscopic characterization and hydroxylation of Mn(II) complexes with bis(2-pyridylmethyl)benzylamine. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2009; 73:25-28. [PMID: 19223230 DOI: 10.1016/j.saa.2009.01.014] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2008] [Revised: 12/16/2008] [Accepted: 01/15/2009] [Indexed: 05/27/2023]
Abstract
Two new Mn(II) complexes of bis(2-pyridylmethyl)benzylamine (bpa) were synthesized and characterized by elemental analyses, IR and UV-visible spectroscopies, thermal analyses and ES-MS. These complexes are stable in air with the formula of [(pba)2Mn2Cl2(micro-Cl)2] (1) and [(pba)2Mn2(H2O)2(micro-Ac)2] (Ac)2 (2). The spectroscopic titration results show that the complexes could react with H2O2 resulting active oxidants, which could cause the intramolecular aromatic hydroxylation. The hydroxylated ligand (pba-OH) was confirmed by ES-MS and HPLC.
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Affiliation(s)
- Jun-Feng Li
- School of Chemistry and Chemical Engineer, Jiangsu University, 301 Xufu Road, Zhenjiang, 212013, PR China
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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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28
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Jiang X, Liu H, Zheng B, Zhang J. Coordination modes of bridge carboxylates in dinuclear manganese compounds determine their catalase-like activities. Dalton Trans 2009:8714-23. [DOI: 10.1039/b907687e] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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29
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Matsuya K, Fukui S, Hoshino Y, Nagao H. A mixed-valence diruthenium complex, triply bridged by mixed-moieties of chloro and methoxo ligands. Dalton Trans 2009:7876-8. [DOI: 10.1039/b912377f] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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30
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Rich J, Rodríguez M, Romero I, Vaquer L, Sala X, Llobet A, Corbella M, Collomb MN, Fontrodona X. Mn(ii) complexes containing the polypyridylic chiral ligand (−)-pinene[5,6]bipyridine. Catalysts for oxidation reactions. Dalton Trans 2009:8117-26. [DOI: 10.1039/b906435d] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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31
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Shimizu Y, Fukui S, Oi T, Nagao H. Synthesis and Characterization of Ruthenium Complexes Having TridentateN-Ethyl-N,N-bis(2-pyridylmethyl)amine Coordinating in a Facial or Meridional Fashion. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2008. [DOI: 10.1246/bcsj.81.1285] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Duboc C, Collomb MN, Pécaut J, Deronzier A, Neese F. Definition of Magneto-Structural Correlations for the MnIIIon. Chemistry 2008; 14:6498-509. [DOI: 10.1002/chem.200800426] [Citation(s) in RCA: 60] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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33
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Dubois L, Pécaut J, Charlot MF, Baffert C, Collomb MN, Deronzier A, Latour JM. Carboxylate Ligands Drastically Enhance the Rates of Oxo Exchange and Hydrogen Peroxide Disproportionation by Oxo Manganese Compounds of Potential Biological Significance. Chemistry 2008; 14:3013-25. [DOI: 10.1002/chem.200701253] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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34
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Synthesis, crystal structure and catalytic activity for H2O2 disproportionation of the manganese(II) coordination polymer {[Mn(O2C(CF2)8CO2)(phen)2]H2O}n (phen=1,10-phenanthroline). Polyhedron 2008. [DOI: 10.1016/j.poly.2007.12.032] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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35
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Xiao FP, Yu BB, Liao ZR. Synthesis, spectra and crystal structure of a dinuclear manganese(χ) complex [(NTB)Mn(μ-O)]2(ClO4)4 · 2H2O. J COORD CHEM 2008. [DOI: 10.1080/00958970701338465] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Feng-Ping Xiao
- a College of Chemistry and Molecular Science, Wuhan University , Wuhan, Hubei, 430072, P.R. China
- b School of Chemistry, Central China Normal University , Wuhan, 430079, P.R. China
| | - Bi-Bo Yu
- b School of Chemistry, Central China Normal University , Wuhan, 430079, P.R. China
| | - Zhan-Ru Liao
- b School of Chemistry, Central China Normal University , Wuhan, 430079, P.R. China
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36
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You ZL, Zhou P. Synthesis, characterization and crystal structures of a pair of azido-bridged polynuclear Schiff base copper(II) complexes with urease inhibitory activity. TRANSIT METAL CHEM 2008. [DOI: 10.1007/s11243-008-9064-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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37
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Synthesis, crystal structure and magnetic properties of three polynuclear manganese compounds bearing ferrocenecarboxylato ligands. J Organomet Chem 2008. [DOI: 10.1016/j.jorganchem.2007.11.055] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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38
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Mola J, Romero I, Rodríguez M, Bozoglian F, Poater A, Solà M, Parella T, Benet-Buchholz J, Fontrodona X, Llobet A. Mechanistic Insights into the Chemistry of Ru(II) Complexes Containing Cl and DMSO Ligands. Inorg Chem 2007; 46:10707-16. [DOI: 10.1021/ic701421w] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Joaquim Mola
- Departament de Química, Institut de Química Computacional and Servei de RMN, Universitat de Girona, Campus de Montilivi, E-17071 Girona, Spain, Institute of Chemical Research of Catalonia (ICIQ), Av. Països Catalans 16, E-43007 Tarragona, Spain, Dipartimento di Chimica, Università degli Studi di Salerno, via Ponte don Melillo, Fisciano (SA), 84084, Italy, Departament de Química and Servei de RMN, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, E-08193 Barcelona, Spain
| | - Isabel Romero
- Departament de Química, Institut de Química Computacional and Servei de RMN, Universitat de Girona, Campus de Montilivi, E-17071 Girona, Spain, Institute of Chemical Research of Catalonia (ICIQ), Av. Països Catalans 16, E-43007 Tarragona, Spain, Dipartimento di Chimica, Università degli Studi di Salerno, via Ponte don Melillo, Fisciano (SA), 84084, Italy, Departament de Química and Servei de RMN, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, E-08193 Barcelona, Spain
| | - Montserrat Rodríguez
- Departament de Química, Institut de Química Computacional and Servei de RMN, Universitat de Girona, Campus de Montilivi, E-17071 Girona, Spain, Institute of Chemical Research of Catalonia (ICIQ), Av. Països Catalans 16, E-43007 Tarragona, Spain, Dipartimento di Chimica, Università degli Studi di Salerno, via Ponte don Melillo, Fisciano (SA), 84084, Italy, Departament de Química and Servei de RMN, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, E-08193 Barcelona, Spain
| | - Fernando Bozoglian
- Departament de Química, Institut de Química Computacional and Servei de RMN, Universitat de Girona, Campus de Montilivi, E-17071 Girona, Spain, Institute of Chemical Research of Catalonia (ICIQ), Av. Països Catalans 16, E-43007 Tarragona, Spain, Dipartimento di Chimica, Università degli Studi di Salerno, via Ponte don Melillo, Fisciano (SA), 84084, Italy, Departament de Química and Servei de RMN, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, E-08193 Barcelona, Spain
| | - Albert Poater
- Departament de Química, Institut de Química Computacional and Servei de RMN, Universitat de Girona, Campus de Montilivi, E-17071 Girona, Spain, Institute of Chemical Research of Catalonia (ICIQ), Av. Països Catalans 16, E-43007 Tarragona, Spain, Dipartimento di Chimica, Università degli Studi di Salerno, via Ponte don Melillo, Fisciano (SA), 84084, Italy, Departament de Química and Servei de RMN, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, E-08193 Barcelona, Spain
| | - Miquel Solà
- Departament de Química, Institut de Química Computacional and Servei de RMN, Universitat de Girona, Campus de Montilivi, E-17071 Girona, Spain, Institute of Chemical Research of Catalonia (ICIQ), Av. Països Catalans 16, E-43007 Tarragona, Spain, Dipartimento di Chimica, Università degli Studi di Salerno, via Ponte don Melillo, Fisciano (SA), 84084, Italy, Departament de Química and Servei de RMN, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, E-08193 Barcelona, Spain
| | - Teodor Parella
- Departament de Química, Institut de Química Computacional and Servei de RMN, Universitat de Girona, Campus de Montilivi, E-17071 Girona, Spain, Institute of Chemical Research of Catalonia (ICIQ), Av. Països Catalans 16, E-43007 Tarragona, Spain, Dipartimento di Chimica, Università degli Studi di Salerno, via Ponte don Melillo, Fisciano (SA), 84084, Italy, Departament de Química and Servei de RMN, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, E-08193 Barcelona, Spain
| | - Jordi Benet-Buchholz
- Departament de Química, Institut de Química Computacional and Servei de RMN, Universitat de Girona, Campus de Montilivi, E-17071 Girona, Spain, Institute of Chemical Research of Catalonia (ICIQ), Av. Països Catalans 16, E-43007 Tarragona, Spain, Dipartimento di Chimica, Università degli Studi di Salerno, via Ponte don Melillo, Fisciano (SA), 84084, Italy, Departament de Química and Servei de RMN, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, E-08193 Barcelona, Spain
| | - Xavier Fontrodona
- Departament de Química, Institut de Química Computacional and Servei de RMN, Universitat de Girona, Campus de Montilivi, E-17071 Girona, Spain, Institute of Chemical Research of Catalonia (ICIQ), Av. Països Catalans 16, E-43007 Tarragona, Spain, Dipartimento di Chimica, Università degli Studi di Salerno, via Ponte don Melillo, Fisciano (SA), 84084, Italy, Departament de Química and Servei de RMN, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, E-08193 Barcelona, Spain
| | - Antoni Llobet
- Departament de Química, Institut de Química Computacional and Servei de RMN, Universitat de Girona, Campus de Montilivi, E-17071 Girona, Spain, Institute of Chemical Research of Catalonia (ICIQ), Av. Països Catalans 16, E-43007 Tarragona, Spain, Dipartimento di Chimica, Università degli Studi di Salerno, via Ponte don Melillo, Fisciano (SA), 84084, Italy, Departament de Química and Servei de RMN, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, E-08193 Barcelona, Spain
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Signorella S, Rompel A, Büldt-Karentzopoulos K, Krebs B, Pecoraro VL, Tuchagues JP. Reevaluation of the Kinetics of Polynuclear Mimics for Manganese Catalases. Inorg Chem 2007; 46:10864-8. [DOI: 10.1021/ic070180e] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sandra Signorella
- Departamento de Química, Facultad de Ciencias Bioquímicas y Farmacéuticas, UNR, Suipacha 531, S2002LRK Rosario, Argentina, Institutes für Biochemie and für Anorganische und Analytische Chemie, Westfälische Wilhelms-Universität, Wilhelm-Klemm-Strasse 2 + 8, D-48149 Münster, Germany, Department of Chemistry, The University of Michigan, Ann Arbor, Michigan 48109-1055, and Laboratoire de Chimie de Coordination, UPR CNRS 8241, 205 Route de Narbonne, 31077 Toulouse Cedex 04, France
| | - Annette Rompel
- Departamento de Química, Facultad de Ciencias Bioquímicas y Farmacéuticas, UNR, Suipacha 531, S2002LRK Rosario, Argentina, Institutes für Biochemie and für Anorganische und Analytische Chemie, Westfälische Wilhelms-Universität, Wilhelm-Klemm-Strasse 2 + 8, D-48149 Münster, Germany, Department of Chemistry, The University of Michigan, Ann Arbor, Michigan 48109-1055, and Laboratoire de Chimie de Coordination, UPR CNRS 8241, 205 Route de Narbonne, 31077 Toulouse Cedex 04, France
| | - Klaudia Büldt-Karentzopoulos
- Departamento de Química, Facultad de Ciencias Bioquímicas y Farmacéuticas, UNR, Suipacha 531, S2002LRK Rosario, Argentina, Institutes für Biochemie and für Anorganische und Analytische Chemie, Westfälische Wilhelms-Universität, Wilhelm-Klemm-Strasse 2 + 8, D-48149 Münster, Germany, Department of Chemistry, The University of Michigan, Ann Arbor, Michigan 48109-1055, and Laboratoire de Chimie de Coordination, UPR CNRS 8241, 205 Route de Narbonne, 31077 Toulouse Cedex 04, France
| | - Bernt Krebs
- Departamento de Química, Facultad de Ciencias Bioquímicas y Farmacéuticas, UNR, Suipacha 531, S2002LRK Rosario, Argentina, Institutes für Biochemie and für Anorganische und Analytische Chemie, Westfälische Wilhelms-Universität, Wilhelm-Klemm-Strasse 2 + 8, D-48149 Münster, Germany, Department of Chemistry, The University of Michigan, Ann Arbor, Michigan 48109-1055, and Laboratoire de Chimie de Coordination, UPR CNRS 8241, 205 Route de Narbonne, 31077 Toulouse Cedex 04, France
| | - Vincent L. Pecoraro
- Departamento de Química, Facultad de Ciencias Bioquímicas y Farmacéuticas, UNR, Suipacha 531, S2002LRK Rosario, Argentina, Institutes für Biochemie and für Anorganische und Analytische Chemie, Westfälische Wilhelms-Universität, Wilhelm-Klemm-Strasse 2 + 8, D-48149 Münster, Germany, Department of Chemistry, The University of Michigan, Ann Arbor, Michigan 48109-1055, and Laboratoire de Chimie de Coordination, UPR CNRS 8241, 205 Route de Narbonne, 31077 Toulouse Cedex 04, France
| | - Jean-Pierre Tuchagues
- Departamento de Química, Facultad de Ciencias Bioquímicas y Farmacéuticas, UNR, Suipacha 531, S2002LRK Rosario, Argentina, Institutes für Biochemie and für Anorganische und Analytische Chemie, Westfälische Wilhelms-Universität, Wilhelm-Klemm-Strasse 2 + 8, D-48149 Münster, Germany, Department of Chemistry, The University of Michigan, Ann Arbor, Michigan 48109-1055, and Laboratoire de Chimie de Coordination, UPR CNRS 8241, 205 Route de Narbonne, 31077 Toulouse Cedex 04, France
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Collomb MN, Mantel C, Romain S, Duboc C, Leprêtre JC, Pécaut J, Deronzier A. Redox-Induced μ-Acetato and μ-Oxo Core Interconversions in Dinuclear Manganese Tris(2-methylpyridyl)amine (tpa) Complexes: Isolation and Characterization of [Mn2III(μ-O)(μ-O2CCH3)(tpa)2]3+. Eur J Inorg Chem 2007. [DOI: 10.1002/ejic.200601089] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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41
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Qiu X, Liu W, Zhu H. Synthesis, Characterization and Crystal Structures of Four Dinuclear Schiff Base Nickel(II) and Copper(II) Complexes with Versatile Bridging Groups. Z Anorg Allg Chem 2007. [DOI: 10.1002/zaac.200700132] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Xiao‐Yang Qiu
- Lanzhou / P. R. China, College of Chemistry and Chemical Engineering, Lanzhou University
| | - Wei‐Sheng Liu
- Lanzhou / P. R. China, College of Chemistry and Chemical Engineering, Lanzhou University
| | - Hai‐Liang Zhu
- Lanzhou / P. R. China, College of Chemistry and Chemical Engineering, Lanzhou University
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42
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Synthesis, structural characterization, catalase-like function and epoxidation activity of a mononuclear manganese(II) complex. ACTA ACUST UNITED AC 2007. [DOI: 10.1016/j.molcata.2006.12.044] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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43
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44
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Supramolecular architectures with ladder and lamellar topologies using metal-ligand coordination units via C–H···Cl and O–H···Cl hydrogen bonding. Struct Chem 2006. [DOI: 10.1007/s11224-006-9113-2] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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45
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Mola J, Rodríguez M, Romero I, Llobet A, Parella T, Poater A, Duran M, Solà M, Benet-Buchholz J. New Ru Complexes Containing the N-Tridentate bpea and Phosphine Ligands: Consequences of Meridional vs Facial Geometry. Inorg Chem 2006; 45:10520-9. [PMID: 17173407 DOI: 10.1021/ic061126l] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The synthesis and isolation of the complex cis,fac-[RuIICl2(bpea)(PPh3)][3; bpea = N,N-bis(2-pyridylmethyl)ethylamine] and three geometrical isomers of the complex [RuIICl(bpea)(dppe)](BF4) [4; dppe = (1,2-diphenylphosphino)ethane], trans,fac (4a), cis,fac (4b), and mer(down) (4c), have been described (see Chart 1 for a drawing of their structures). These complexes have been characterized through analytical, spectroscopic (IR, UV/vis, and 1D and 2D NMR), and electrochemical (cyclic voltammetry) techniques. In addition, complexes 3, 4a, and 4b have been further characterized in the solid state through monocrystal X-ray diffraction analysis. The molecular and electronic structures of isomers 4a, 4b, 4c, and 4d (the mer(up) isomer) have also been studied by means of density functional theory (DFT) calculations. Furthermore, their low-energy electronic transitions have been simulated using time-dependent DFT approaches, which have allowed unraveling of their metal-to-ligand charge-transfer nature. Complexes 3 and 4a-c are capable of catalyzing H-transfer types of reactions between alcohols and aromatic ketones such as acetophenone and 2,2-dimethylpropiophenone (DP). A strong influence of the facial versus meridional geometry in the bpea ligand coordination mode is observed for these catalytic reactions, with the meridional isomer being much more active than the facial one. The meridional isomer is even capable of carrying out the H-transfer reaction of bulky substrates such as DP at room temperature.
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Affiliation(s)
- Joaquim Mola
- Departament de Química, Universitat de Girona, Campus de Montilivi, E-17071 Girona, Spain
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46
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Structure and characterization of a μ-phenoxo-bis μ-acetato dinuclear Mn(II,II) complex [Mn2(LO)(μ-OAc)2](ClO4) (LOH=2,6-bis{bis(2-(2-pyridyl)ethyl)aminomethyl}-4-methylphenol): Substituent effects. Inorganica Chim Acta 2006. [DOI: 10.1016/j.ica.2006.05.040] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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47
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You ZL, Jiao QZ, Niu SY, Chi JY. Syntheses, Characterization and Crystal Structures of Three Structurally Similar Dinuclear Schiff Base Cadmium(II) Complexes with Bridging Azide or Thiocyanate Ligands. Z Anorg Allg Chem 2006. [DOI: 10.1002/zaac.200600214] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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48
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Gultneh Y, Tesema YT, Yisgedu TB, Butcher RJ, Wang G, Yee GT. Studies of a Dinuclear Manganese Complex with Phenoxo and Bis-acetato Bridging in the Mn2(II,II) and Mn2(II,III) States: Coordination Structural Shifts and Oxidation State Control in Bridged Dinuclear Complexes. Inorg Chem 2006; 45:3023-33. [PMID: 16562958 DOI: 10.1021/ic060039q] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The dinucleating ligand, 2,6-bis{[(2-(2-pyridyl)ethyl)(2-pyridylmethyl)-amino]-methyl}-4-methylphenol) (L1OH) reacts with Mn(ClO4)2.6H2O to form the dinuclear complex [Mn2(II,II)(L1O)(mu-OOCCH3)2]ClO4 (1). The electrolytic oxidation of 1 at 0.7 V (vs Ag/AgCl) produces the mixed valent complex [Mn2(II,III)(L1O)(mu-OOCCH3)2](ClO4)2 (1ox) quantitatively, while electrolysis at 0.20 V converts 1ox back to 1. X-ray crystallographic structures show that both 1 and 1ox are dinuclear complexes in which the two manganese ions are each in distorted octahedral coordination environments bridged by the phenoxo oxygen and two acetate ions. The structural changes that occur upon the oxidation 1 to 1ox suggest an extended pi-bonding system involving the phenoxo ring C-O(phenoxo)-Mn(II)-N(pyridyl) chain. In addition, as 1 is oxidized to 1ox, the rearrangements in the coordination sphere resulting from the oxidation of one Mn(II) ion to Mn(III) are transmitted via the bridging Mn-O(phenoxo) bonds and cause structural changes that render the site of the second manganese ion unfit for the +3 state and hence unstable to reduction. Thus the electrolytic oxidation of 1ox in acetonitrile at 1.20 V takes up slightly greater than 1 F of charge/mol of 1ox, but the starting complex, 1ox, is recovered, showing the instability of the Mn2(III,III) state that is formed with respect to reduction to 1ox. Variable-temperature magnetic susceptibility measurements of 1 and 1ox over the temperature range from 1.8 to 300 K can be modeled with magnetic coupling constants J = -4.3 and -4.1 cm(-1), respectively showing the weak antiferromagnetic coupling between the two manganese ions in each dinuclear complex, which is commonly observed among similar phenoxo- and bis-1,3-carboxylato-bridged dinuclear Mn2(II,II) and Mn2(II,III) complexes.
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Affiliation(s)
- Yilma Gultneh
- Department of Chemistry, Howard University, Washington, DC 20059, USA.
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Journaux Y, Glaser T, Steinfeld G, Lozan V, Kersting B. Preparation and characterization of CrIII, MnII, FeII, CoIIand NiIIcomplexes of a hexaazadithiophenolate macrocycle. Dalton Trans 2006:1738-48. [PMID: 16568183 DOI: 10.1039/b513717a] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The ligating properties of the 24-membered macrocyclic dinucleating hexaazadithiophenolate ligand (L(Me))2- towards the transition metal ions Cr(II), Mn(II), Fe(II), Co(II), Ni(II) and Zn(II) have been examined. It is demonstrated that this ligand forms an isostructural series of bioctahedral [(L(Me))M(II)2(OAc)]+ complexes with Mn(II) (2), Fe(II) (3), Co(II) (4), Ni(II) (5) and Zn(II) (6). The reaction of (L(Me))2- with two equivalents of CrCl2 and NaOAc followed by air-oxidation produced the complex [(L(Me))Cr(III)H2(OAc)]2+ (1), which is the first example for a mononuclear complex of (L(Me))2-. Complexes 2-6 contain a central N3M(II)(mu-SR)2(mu-OAc)M(II)N3 core with an exogenous acetate bridge. The Cr(III) ion in is bonded to three N and two S atoms of (L(Me))2- and an O atom of a monodentate acetate coligand. In 2-6 there is a consistent decrease in the deviations of the bond angles from the ideal octahedral values such that the coordination polyhedra in the dinickel complex 5 are more regular than in the dimanganese compound 2. The temperature dependent magnetic susceptibility measurements reveal the magnetic exchange interactions in the [(L(Me))M(II)2(OAc)]+ cations to be relatively weak. Intramolecular antiferromagnetic exchange interactions are present in the Mn(II)2, Fe(II)2 and Co(II)2 complexes where J = -5.1, -10.6 and approximately -2.0 cm(-1) (H = -2JS1S2). In contrast, in the dinickel complex 5 a ferromagnetic exchange interaction is present with J = +6.4 cm(-1). An explanation for this difference is qualitatively discussed in terms of the bonding differences.
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Affiliation(s)
- Yves Journaux
- Laboratoire de Chimie Inorganique et Matérieux Moléculaires, Université Pierre et Marie Curie 6, case courier 42, F-75005, Paris, France
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Teutloff C, Schäfer KO, Sinnecker S, Barynin V, Bittl R, Wieghardt K, Lendzian F, Lubitz W. High-field EPR investigations of Mn(III)Mn(IV) and Mn(II)Mn(III) states of dimanganese catalase and related model systems. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2005; 43 Spec no.:S51-64. [PMID: 16235205 DOI: 10.1002/mrc.1685] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Multi-frequency EPR experiments at 9, 34 and 94 GHz are reported on the antiferromagnetically coupled mixed valence Mn(II)Mn(III) complex of manganese catalase and on several dinuclear manganese model systems. They are compared with similar experiments obtained earlier for the Mn(III)Mn(IV) states. It is demonstrated how accurate information on the G- and 55Mn hyperfine tensors can be derived from this approach. Furthermore, the effect of oxidation state, planarity of the manganese-oxygen core and the type of ligands bridging the manganese ions on the magnetic resonance parameters and the related electronic structure is investigated. 'Broken-symmetry' density functional calculations on two Mn(III)Mn(IV) complexes, including the superoxidized state of the catalase, are presented. The agreement between calculated and experimental EPR parameters and complex geometries is remarkably good. Implications of these results for the structure and function of the dimanganese catalase are discussed.
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Affiliation(s)
- Christian Teutloff
- Max-Volmer-Laboratory, Institute for Chemistry, PC 14, Technical University Berlin, D-10623 Berlin, Germany
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