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Marchi L, Carlino S, Castellano C, Demartin F, Forni A, Ferretti AM, Ponti A, Pasini A, Rigamonti L. Substituent-Guided Cluster Nuclearity for Tetranuclear Iron(III) Compounds with Flat {Fe4(μ3-O)2} Butterfly Core. Int J Mol Sci 2023; 24:ijms24065808. [PMID: 36982884 PMCID: PMC10057004 DOI: 10.3390/ijms24065808] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 03/13/2023] [Accepted: 03/16/2023] [Indexed: 03/22/2023] Open
Abstract
The tetranuclear iron(III) compounds [Fe4(μ3-O)2(μ-LZ)4] (1–3) were obtained by reaction of FeCl3 with the shortened salen-type N2O2 tetradentate Schiff bases N,N’-bis(salicylidene)-o-Z-phenylmethanediamine H2LZ (Z = NO2, Cl and OMe, respectively), where the one-carbon bridge between the two iminic nitrogen donor atoms guide preferentially to the formation of oligonuclear species, and the ortho position of the substituent Z on the central phenyl ring selectively drives towards Fe4 bis-oxido clusters. All compounds show a flat almost-symmetric butterfly-like conformation of the {Fe4(μ3-O)2} core, surrounded by the four Schiff base ligands, as depicted by both the X-ray molecular structures of 1 and 2 and the optimized geometries of all derivatives as obtained by UM06/6-311G(d) DFT calculations. The strength of the antiferromagnetic exchange coupling constants between the iron(III) ions varies among the three derivatives, despite their magnetic cores remain structurally almost unvaried, as well as the coordination of the metal ions, with a distorted octahedral environment for the two-body iron ions, Feb, and a pentacoordination with trigonal bipyramidal geometry for the two-wing iron ions, Few. The different magnetic behavior within the series of examined compounds may be ascribed to the influence of the electronic features of Z on the electron density distribution (EDD) of the central {Fe4(μ3-O)2} core, substantiated by a Quantum Theory of Atoms In Molecules (QTAIM) topological analysis of the EDD, as obtained by UM06 calculations 1–3.
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Affiliation(s)
- Lorenzo Marchi
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Modena e Reggio Emilia, Via G. Campi 103, 41125 Modena, Italy;
| | - Stefano Carlino
- Dipartimento di Chimica, Università degli Studi di Milano, Via C. Golgi 19, 20133 Milano, Italy; (S.C.); (C.C.); (F.D.); (A.P.)
| | - Carlo Castellano
- Dipartimento di Chimica, Università degli Studi di Milano, Via C. Golgi 19, 20133 Milano, Italy; (S.C.); (C.C.); (F.D.); (A.P.)
| | - Francesco Demartin
- Dipartimento di Chimica, Università degli Studi di Milano, Via C. Golgi 19, 20133 Milano, Italy; (S.C.); (C.C.); (F.D.); (A.P.)
| | - Alessandra Forni
- Istituto di Scienze e Tecnologie Chimiche “Giulio Natta”, Consiglio Nazionale delle Ricerche (SCITEC-CNR), Via C. Golgi 19, 20133 Milano, Italy;
| | - Anna M. Ferretti
- Istituto di Scienze e Tecnologie Chimiche “Giulio Natta”, Consiglio Nazionale delle Ricerche (SCITEC-CNR), Via G. Fantoli 16/15, 20138 Milano, Italy; (A.M.F.); (A.P.)
| | - Alessandro Ponti
- Istituto di Scienze e Tecnologie Chimiche “Giulio Natta”, Consiglio Nazionale delle Ricerche (SCITEC-CNR), Via G. Fantoli 16/15, 20138 Milano, Italy; (A.M.F.); (A.P.)
| | - Alessandro Pasini
- Dipartimento di Chimica, Università degli Studi di Milano, Via C. Golgi 19, 20133 Milano, Italy; (S.C.); (C.C.); (F.D.); (A.P.)
| | - Luca Rigamonti
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Modena e Reggio Emilia, Via G. Campi 103, 41125 Modena, Italy;
- Dipartimento di Chimica, Università degli Studi di Milano, Via C. Golgi 19, 20133 Milano, Italy; (S.C.); (C.C.); (F.D.); (A.P.)
- Correspondence: ; Tel.: +39-059-205-8646
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2
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Petrus R, Kowaliński A, Utko J, Matuszak K, Lis T, Sobota P. Heterometallic 3d-4f Alkoxide Precursors for the Synthesis of Binary Oxide Nanomaterials. Inorg Chem 2023; 62:2197-2212. [PMID: 36696546 PMCID: PMC9906784 DOI: 10.1021/acs.inorgchem.2c03872] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
In this study, a new method for the synthesis of heterometallic 3d-4f alkoxides by the direct reaction of metallic lanthanides (La, Pr, Nd, Gd) with MCl2 (M = Mn, Ni, Co) in 2-methoxyethanol was developed. The method was applied to the synthesis of the heterometallic oxo-alkoxide clusters [Ln4Mn2(μ6-O)(μ3-OR)8(HOR)xCl6] (Ln = La (1), Nd (2), Gd (3); x = 0, 2, 4); [Pr4M2(μ6-O)(μ3-OR)8(HOR)xCl6] (M = Co (4), Ni (5); x = 2, 4); and [Ln4Mn2(μ3-OH)2(μ3-OR)4(μ-OR)4(μ-Cl)2(HOR)4Cl6] (Ln = La (11) and Pr (12)). Mechanistic investigation led to the isolation of the homo- and heterometallic intermediates [Pr(μ-OR)(μ-Cl)(HOR)Cl]n (6), [Co4(μ3-OR)4(HOR)4Cl4] (7), [Ni4(μ3-OR)4(HOEt)4Cl4] (8), [Mn4(μ3-OR)4(HOR)2(HOEt)2Cl4] (9), and [Nd(HOR)4Cl][CoCl4] (10). In the presence of an external M(II) source at 1100 °C, 1-4 and 12 were selectively converted into binary metal oxide nanomaterials with trigonal or orthorhombic perovskite structures, i.e., LaMnO3, GdMnO3, NdMnO3, Pr0.9MnO3, and PrCoO3. Compound 5 decomposed into a mixture of homo- and heterometallic oxides. The method presented provides a valuable platform for the preparation of advanced heterometallic oxide materials with promising magnetic, luminescence, and/or catalytic applications.
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Affiliation(s)
- Rafał Petrus
- Faculty
of Chemistry, Wrocław University of
Science and Technology, 23 Smoluchowskiego, 50-370 Wrocław, Poland,
| | - Adrian Kowaliński
- Faculty
of Chemistry, Wrocław University of
Science and Technology, 23 Smoluchowskiego, 50-370 Wrocław, Poland
| | - Józef Utko
- Faculty
of Chemistry, Wrocław University of
Science and Technology, 23 Smoluchowskiego, 50-370 Wrocław, Poland
| | - Karolina Matuszak
- Faculty
of Chemistry, Wrocław University of
Science and Technology, 23 Smoluchowskiego, 50-370 Wrocław, Poland
| | - Tadeusz Lis
- Faculty
of Chemistry, University of Wrocław, 14 F. Joliot-Curie, 50-383 Wrocław, Poland
| | - Piotr Sobota
- Faculty
of Chemistry, Wrocław University of
Science and Technology, 23 Smoluchowskiego, 50-370 Wrocław, Poland,
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3
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Bigness A, Vaddypally S, Zdilla MJ, Mendoza-Cortes JL. Ubiquity of cubanes in bioinorganic relevant compounds. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2021.214168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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4
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Riaz M, Gupta RK, Su HF, Jagličić Z, Kurmoo M, Tung CH, Sun D, Zheng LS. Hexadecanuclear Mn II2Mn III14 Molecular Torus Built from in Situ Tandem Ligand Transformations. Inorg Chem 2019; 58:14331-14337. [PMID: 31647227 DOI: 10.1021/acs.inorgchem.9b01549] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A mixed-valent hexadecanuclear manganese cluster, [MnII2MnIII14(trz)14(thetach)4(μ3-O)8(H2O)10](ClO4)6 (Mn16), containing two MnII and 14 MnIII ions, is constructed from mixed in situ generated ligands, 1,2,3-triazole (Htrz) and 1,3,5-tri(2-hydroxyethyl)-1,3,5-triazacyclohexane (H3thetach). Remarkably, both ligands were not initially added into the reaction system, and their formations involve the in situ ligand decomposition and subsequent condensation reactions. The core of Mn16 is an elongated torus comprised of eight Mn atoms and four [Mn2O2] subunits bridged by oxo or alkoxide. The high-resolution electrospray ionization mass spectrometry (HR-ESI-MS) of Mn16 dissolved in CH3CN indicates its structure remains intact as +3 and +4 species. Temperature and field dependent magnetization revealed predominantly antiferromagnetic exchange interactions within the cluster. The work provides one-pot synthesis of high-nuclearity manganese clusters using the ligands generated by in situ reactions in a tandem fashion.
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Affiliation(s)
- Muhammad Riaz
- Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, State Key Laboratory of Crystal Materials , Shandong University , Jinan , 250100 , People's Republic of China
| | - Rakesh Kumar Gupta
- Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, State Key Laboratory of Crystal Materials , Shandong University , Jinan , 250100 , People's Republic of China
| | - Hai-Feng Su
- State Key Laboratory for Physical Chemistry of Solid Surfaces and Department of Chemistry, College of Chemistry and Chemical Engineering , Xiamen University , Xiamen , 361005 , P. R. China
| | - Zvonko Jagličić
- Faculty of Civil and Geodetic Engineering & Institute of Mathematics, Physics and Mechanics , University of Ljubljana , Jamova 2 , 1000 Ljubljana , Slovenia
| | - Mohamedally Kurmoo
- Institut de Chimie de Strasbourg , Université de Strasbourg, CNRS-UMR 7177 , 4 rue Blaise Pascal , 67008 Strasbourg Cedex, France
| | - Chen-Ho Tung
- Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, State Key Laboratory of Crystal Materials , Shandong University , Jinan , 250100 , People's Republic of China
| | - Di Sun
- Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, State Key Laboratory of Crystal Materials , Shandong University , Jinan , 250100 , People's Republic of China.,State Key Laboratory for Physical Chemistry of Solid Surfaces and Department of Chemistry, College of Chemistry and Chemical Engineering , Xiamen University , Xiamen , 361005 , P. R. China
| | - Lan-Sun Zheng
- State Key Laboratory for Physical Chemistry of Solid Surfaces and Department of Chemistry, College of Chemistry and Chemical Engineering , Xiamen University , Xiamen , 361005 , P. R. China
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5
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Functionalized dipyridyl-methanol ligand for a targeted synthesis of Mn cubane and double-cubane aggregates. INORG CHEM COMMUN 2019. [DOI: 10.1016/j.inoche.2019.05.021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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6
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Lapidus SH, Stephens PW, Kareis CM, VanNatta PE, Miller JS. Anomalous Stoichiometry and Antiferromagnetic Ordering for the Extended Hydroxymanganese(II) Cubes/Hexacyanometalate-Based 3D-Structured [Mn II 4 (OH) 4 ][Mn II (CN) 6 ](OH 2 ) 6 ⋅H 2 O. Chemistry 2019; 25:1752-1757. [PMID: 30286266 DOI: 10.1002/chem.201804935] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Indexed: 11/11/2022]
Abstract
The reaction of MnII (O2 CMe)2 and NaCN or LiCN in water forms a light green insoluble material. Structural solution and Rietveld refinement of high-resolution synchrotron powder diffraction data for this unprecedented, complicated compound of previously unknown composition revealed a new alkali-free ordered structural motif with [MnII 4 (μ3 -OH)4 ]4+ cubes and octahedral [MnII (CN)6 ]4- ions interconnected in 3D by MnII -N≡C-MnII linkages. The composition is {[MnII (OH2 )3 ][MnII (OH2 )]3 }(μ3 -OH)4 ][MnII (μ-CN)2 (CN)4 ]⋅H2 O=[MnII 4 (μ3 -OH)4 (OH2 )6 ][MnII (μ-CN)2 (CN)4 ]⋅H2 O, which is further simplified to [Mn4 (OH)4 ][Mn(CN)6 ](OH2 )7 (1). 1 has four high-spin (S=5/2) MnII sites that are antiferromagnetically coupled within the cube and are antiferromagnetically coupled to six low-spin (S=1/2) octahedral [MnII (CN)6 ]4- ions. Above 40 K the magnetic susceptibility, χ(T), can be fitted to the Curie-Weiss expression, χ ∝(T-θ)-1 , with θ=-13.4 K, indicative of significant antiferromagnetic coupling and 1 orders as an antiferromagnet at Tc =7.8 K.
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Affiliation(s)
- Saul H Lapidus
- Department of Physics & Astronomy, State University of New York, Stony Brook, NY, 11794-380, USA.,Current Address: X-ray Science Division, Argonne National Laboratory, Lemont, IL, 60439, USA
| | - Peter W Stephens
- Department of Physics & Astronomy, State University of New York, Stony Brook, NY, 11794-380, USA
| | - Christopher M Kareis
- Department of Chemistry, University of Utah, Salt Lake City, UT, 84112-0850, USA
| | - Peter E VanNatta
- Department of Chemistry, University of Utah, Salt Lake City, UT, 84112-0850, USA
| | - Joel S Miller
- Department of Chemistry, University of Utah, Salt Lake City, UT, 84112-0850, USA
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7
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Three Polyhydroxyl-Bridged Defective Dicubane Tetranuclear MnIII Complexes: Synthesis, Crystal Structures, and Spectroscopic Properties. CRYSTALS 2018. [DOI: 10.3390/cryst8070272] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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8
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Antiferromagnetic Coupling in a New Mn(III) Schiff Base Complex with Open-Cubane Core: Structure, Spectroscopic and Luminescence Properties. J CLUST SCI 2018. [DOI: 10.1007/s10876-018-1360-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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9
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Mixed-valent tetranuclear manganese complexes with pentadentate Schiff-base ligand having a Y-shaped core. CHEMICAL PAPERS 2017. [DOI: 10.1007/s11696-017-0305-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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10
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Arauzo A, Bartolomé E, Benniston AC, Melnic S, Shova S, Luzón J, Alonso PJ, Barra AL, Bartolomé J. Slow magnetic relaxation in a dimeric Mn2Ca2 complex enabled by the large Mn(iii) rhombicity. Dalton Trans 2017; 46:720-732. [DOI: 10.1039/c6dt02509a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
A large single-ion transverse anisotropy at Mn(iii) sites induces slow magnetic relaxation at zero magnetic field of the ferromagnetic Mn dimers in a singular Mn2Ca2 complex.
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Affiliation(s)
- Ana Arauzo
- Servicio de Medidas Físicas
- Universidad de Zaragoza
- 50009 Zaragoza
- Spain
| | - Elena Bartolomé
- Escola Universitària Salesiana de Sarrià (EUSS)
- 08017 Barcelona
- Spain
| | - Andrew C. Benniston
- Molecular Photonics Laboratory
- School of Chemistry
- Newcastle University
- Newcastle-upon-Tyne
- UK
| | - Silvia Melnic
- Institute of Chemistry
- Academy of Sciences of Moldova
- Chisinau
- Moldova
| | - Sergiu Shova
- Institute of Macromolecular Chemistry “Petru Poni” Iasi
- 700487 Iasi
- Romania
| | - Javier Luzón
- Centro Universitario de la Defensa
- Academia General Militar
- Zaragoza
- Spain
- Instituto de Ciencia de Materiales de Aragón and Departamento de Física de la Materia Condensada
| | - Pablo J. Alonso
- Instituto de Ciencia de Materiales de Aragón and Departamento de Física de la Materia Condensada
- CSIC-Universidad de Zaragoza
- 50009 Zaragoza
- Spain
| | - Anne-Laure Barra
- Laboratoire National des Champs Magnétiques Intenses
- CNRS and Université Grenoble Alpes
- 38042 Grenoble Cedex 9
- France
| | - Juan Bartolomé
- Instituto de Ciencia de Materiales de Aragón and Departamento de Física de la Materia Condensada
- CSIC-Universidad de Zaragoza
- 50009 Zaragoza
- Spain
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11
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Preparation, structures and properties of manganese complexes containing amine–(amido or amidato)–phenolato type ligands. Inorganica Chim Acta 2016. [DOI: 10.1016/j.ica.2016.03.036] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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12
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Sobocińska M, Antkowiak M, Wojciechowski M, Kamieniarz G, Utko J, Lis T. New tetranuclear manganese clusters with [MnII3MnIII] and [MnII2MnIII2] metallic cores exhibiting low and high spin ground state. Dalton Trans 2016; 45:7303-11. [DOI: 10.1039/c5dt04869a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two tetranuclear mixed-valent clusters with the metallic [MnII3MnIII] and [MnII2MnIII2] cores were synthesized as molecular nanomagnets with the low and high spin in the ground state.
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Affiliation(s)
- M. Sobocińska
- Faculty of Chemistry
- University of Wrocław
- Wrocław
- Poland
| | - M. Antkowiak
- Faculty of Physics
- A. Mickiewicz University
- Poznań
- Poland
| | - M. Wojciechowski
- Institute of Physics
- University of Zielona Góra
- 65-516 Zielona Góra
- Poland
| | - G. Kamieniarz
- Faculty of Physics
- A. Mickiewicz University
- Poznań
- Poland
| | - J. Utko
- Faculty of Chemistry
- University of Wrocław
- Wrocław
- Poland
| | - T. Lis
- Faculty of Chemistry
- University of Wrocław
- Wrocław
- Poland
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13
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Tréguier B, Lawson M, Bernadat G, Bignon J, Dubois J, Brion JD, Alami M, Hamze A. Synthesis of a 3-(α-styryl)benzo[b]-thiophene library via bromocyclization of alkynes and palladium-catalyzed to sylhydrazones cross-couplings: evaluation as antitubulin agents. ACS COMBINATORIAL SCIENCE 2014; 16:702-10. [PMID: 25229390 DOI: 10.1021/co500115b] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
A library of functionalized 3-(α-styryl)-benzo[b]thiophenes, endowed with a high level of molecular diversity, was efficiently synthesized by applying a synthetic sequence that allowed introduction of various substituents on aromatic A, B, and C-rings. The strategy developed involves the synthesis of 3-bromobenzo[b]thiophene derivatives through a bromocyclization step of methylthio-containing alkynes using N-methylpyrrolidin-2-one hydrotribromide reagent (MPHT). Further coupling of 3-bromobenzothiophenes under palladium-catalysis with N-tosylhydrazones efficiently furnished 2-aryl-3-(α-styryl)benzo[b]thiophene derivatives. The antiproliferative properties of target compounds were studied. Among them, compound 5m has demonstrated submicromolar cytotoxic activity against HCT-116 cell line, and inhibited the polymerization of tubulin at micromolar level comparable to that of CA-4.
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Affiliation(s)
- Bret Tréguier
- Univ Paris Sud, CNRS, BioCIS−UMR 8076, Laboratoire de Chimie Thérapeutique, Equipe Labellisée
Ligue Contre le Cancer, LabEx LERMIT, Faculté de Pharmacie, 5 rue J.-B. Clément, Châtenay-Malabry, F-92296, France
| | - Marie Lawson
- Univ Paris Sud, CNRS, BioCIS−UMR 8076, Laboratoire de Chimie Thérapeutique, Equipe Labellisée
Ligue Contre le Cancer, LabEx LERMIT, Faculté de Pharmacie, 5 rue J.-B. Clément, Châtenay-Malabry, F-92296, France
| | - Guillaume Bernadat
- Univ Paris Sud, CNRS, BioCIS−UMR 8076, Laboratoire de Chimie Thérapeutique, Equipe Labellisée
Ligue Contre le Cancer, LabEx LERMIT, Faculté de Pharmacie, 5 rue J.-B. Clément, Châtenay-Malabry, F-92296, France
| | - Jérôme Bignon
- Institut de Chimie des Substances Naturelles, UPR 2301, CNRS, avenue de la Terrasse, F-91198 Gif sur Yvette, France
| | - Joëlle Dubois
- Institut de Chimie des Substances Naturelles, UPR 2301, CNRS, avenue de la Terrasse, F-91198 Gif sur Yvette, France
| | - Jean-Daniel Brion
- Univ Paris Sud, CNRS, BioCIS−UMR 8076, Laboratoire de Chimie Thérapeutique, Equipe Labellisée
Ligue Contre le Cancer, LabEx LERMIT, Faculté de Pharmacie, 5 rue J.-B. Clément, Châtenay-Malabry, F-92296, France
| | - Mouad Alami
- Univ Paris Sud, CNRS, BioCIS−UMR 8076, Laboratoire de Chimie Thérapeutique, Equipe Labellisée
Ligue Contre le Cancer, LabEx LERMIT, Faculté de Pharmacie, 5 rue J.-B. Clément, Châtenay-Malabry, F-92296, France
| | - Abdallah Hamze
- Univ Paris Sud, CNRS, BioCIS−UMR 8076, Laboratoire de Chimie Thérapeutique, Equipe Labellisée
Ligue Contre le Cancer, LabEx LERMIT, Faculté de Pharmacie, 5 rue J.-B. Clément, Châtenay-Malabry, F-92296, France
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14
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Marino N, Armentano D, Mastropietro TF, Julve M, De Munno G, Martínez-Lillo J. Cubane-type Cu(II)4 and Mn(II)2Mn(III)2 complexes based on pyridoxine: a versatile ligand for metal assembling. Inorg Chem 2013; 52:11934-43. [PMID: 24074249 DOI: 10.1021/ic4016355] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
By using Vitamin B6 in its monodeprotonated pyridoxine form (PN-H) [PN = 3-hydroxy-4,5-bis(hydroxymethyl)-2-methylpyridine], two tetranuclear compounds of formula [Mn4(PN-H)4(CH3CO2)3Cl2]Cl·2CH3OH·2H2O (1) and [Cu4(PN-H)4Cl2(H2O)2]Cl2 (2) have been synthesized and magneto-structurally characterized. 1 crystallizes in the triclinic system with space group P1 whereas 2 crystallizes in the orthorhombic system with Fdd2 as space group. They exhibit Mn(II)2Mn(III)2 (1) and Cu(II)4 (2) cubane cores containing four monodeprotonated pyridoxine groups simultaneously acting as chelating and bridging ligands (1 and 2), three bridging acetate ligands in the syn-syn conformation (1), and two terminally bound chloride anions (1 and 2) plus two coordinated water molecules (2). The electroneutrality is achieved by the presence of chloride counterions in both compounds. Tri- [Mn(1) and Mn(3)] and divalent [Mn(2) and Mn(4)] manganese centers coexist in 1, all being six-coordinate with distorted Mn(1/3)O6 and Mn(2/4)O5Cl octahedral surroundings, respectively, the equatorial Mn-O bonds being about 0.2 Å shorter at the former ones. The two crystallographically independent copper(II) ions in 2 are five-coordinate in somewhat distorted CuO5 [Cu(1)] and CuO4Cl [Cu(2)] square pyramidal geometries. The values of the intracore metal-metal separation cover the ranges 3.144(1)-3.535(1) (1) and 2.922(6)-3.376(1) Å (2). The magnetic properties of 1 and 2 were investigated in the temperature range 1.9-300 K, and they correspond to an overall antiferromagnetic behavior with susceptibility maxima at 5.0 (1) and 65.0 K (2). The analysis of the magnetic susceptibility data showed the coexistence of intracore antiferro- and ferromagnetic interactions in the two compounds. Their values compare well with those existing in the literature for the parent systems.
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Affiliation(s)
- Nadia Marino
- Dipartimento di Chimica e Tecnologie Chimiche, Università della Calabria , via P. Bucci 14/c, 87030 Arcavacata di Rende, Cosenza, Italy
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15
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Dey SK, Honecker A, Mitra P, Mandal SK, Mukherjee A. Magnetostructural Studies on Tetranuclear Manganese [Mn
III
2
Mn
II
2
] Complexes of 9‐Hydroxyphenalenone with Weak π···π Interactions. Eur J Inorg Chem 2012. [DOI: 10.1002/ejic.201200800] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Suman Kr Dey
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur Campus, 741252 Mohanpur West Bengal, India, Fax: +91‐33‐25873020, http://www.iiserkol.ac.in/people/faculty/dcs/a‐mukherjee
| | - Andreas Honecker
- Institute for Theoretical Physics and Fakultät für Mathematik und Informatik, Georg‐August‐Universität Göttingen, Göttingen, Germany, Fax: +49‐551‐39‐9263
| | - Partha Mitra
- Department of Physical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur Campus, 741252 Mohanpur West Bengal, India, Fax: +91‐33‐25873020
| | - Swadhin K. Mandal
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur Campus, 741252 Mohanpur West Bengal, India, Fax: +91‐33‐25873020, http://www.iiserkol.ac.in/people/faculty/dcs/a‐mukherjee
| | - Arindam Mukherjee
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur Campus, 741252 Mohanpur West Bengal, India, Fax: +91‐33‐25873020, http://www.iiserkol.ac.in/people/faculty/dcs/a‐mukherjee
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Petrus R, Sobota P. Two tetranuclear zinc clusters, [Zn4(μ3-OEt)2(μ2-MalO)4Et2] and [Zn4(μ3-GueO)2(μ2-GueO)2(μ2-MalO)2(MalO)2]·2C7H8, containing defective dicubane core geometries (MalOH is maltol and GueOH is guethol). Acta Crystallogr C 2012; 68:m275-80. [PMID: 23007530 DOI: 10.1107/s0108270112036773] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2012] [Accepted: 08/24/2012] [Indexed: 11/10/2022] Open
Abstract
The zinc alkoxide molecules in di-μ(3)-ethanolato-diethyltetrakis(μ(2)-2-methyl-4-oxo-4H-pyran-3-olato-κ(3)O(3),O(4):O(3))tetrazinc(II), [Zn(4)(C(2)H(5))(2)(C(2)H(5)O)(2)(C(6)H(5)O(3))(4)], (I), and bis(μ(3)-2-ethoxyphenolato-κ(4)O(1),O(2):O(1):O(1))bis(μ(2)-2-ethoxyphenolato-κ(3)O(1),O(2):O(1))bis(μ(2)-2-methyl-4-oxo-4H-pyran-3-olato-κ(3)O(3),O(4):O(3))bis(2-methyl-4-oxo-4H-pyran-3-olato-κ(2)O(3),O(4))tetrazinc(II) toluene disolvate, [Zn(4)(C(6)H(5)O(3))(4)(C(8)H(9)O(2))(4)]·2C(7)H(8), (II), lie on crystallographic centres of inversion. The asymmetric units of (I) and (II) contain half of the tetrameric unit and additionally one molecule of toluene for (II). The Zn(II) atoms are four- and six-coordinated in distorted tetrahedral and octahedral geometries for (I), and six-coordinated in a distorted octahedral environment for (II). The Zn(II) atoms in both compounds are arranged in a defect dicubane Zn(4)O(6) core structure composed of two EtZnO(3) tetrahedra and ZnO(6) octahedra for (I), and of four ZnO(6) octahedra for (II), sharing common corners. The maltolate ligands exist mostly in a μ(2)-bridging mode, while the guetholate ligands prefer a higher coordination mode and act as μ(3)- and μ(2)-bridges.
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Affiliation(s)
- Rafał Petrus
- Faculty of Chemistry, University of Wroclaw, Poland
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Habib F, Cook C, Korobkov I, Murugesu M. Novel in situ manganese-promoted double-aldol addition. Inorganica Chim Acta 2012. [DOI: 10.1016/j.ica.2011.11.023] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Liu GX, Cha XC, Li XL, Zhang CY, Wang Y, Nishihara S, Ren XM. An unusual two-dimensional 2-fold interpenetrating metal-organic framework based on tetranuclear manganese(II) clusters: Synthesis, structure and magnetic properties. INORG CHEM COMMUN 2011. [DOI: 10.1016/j.inoche.2011.03.013] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Chen P, Chen H, Yan P, Wang Y, Li G. Effect of lanthanide contraction and rigid ligand on the structure of salen-type lanthanide complexes. CrystEngComm 2011. [DOI: 10.1039/c1ce05501a] [Citation(s) in RCA: 38] [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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