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Jubault V, Genevois F, Pradines B, Cahier B, Jbeli W, Suaud N, Guihéry N, Duhayon C, Pichon C, Sutter J. Pentagonal Bipyramidal 3 d‐Metal Complexes Derived from a Dimethylcarbamoyl‐Substituted Pentadentate‐[N
3
O
2
] Ligand: Aiming for Increased Solubility. ChemistrySelect 2023. [DOI: 10.1002/slct.202204935] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Valentin Jubault
- Laboratoire de Chimie de Coordination du CNRS (LCC) Université de Toulouse, CNRS F-31077 Toulouse France
| | - François Genevois
- Laboratoire de Chimie de Coordination du CNRS (LCC) Université de Toulouse, CNRS F-31077 Toulouse France
| | - Barthélémy Pradines
- Laboratoire de Chimie et Physique Quantiques (LCPQ) Université de Toulouse, CNRS 118 route de Narbonne F-31062 Toulouse France
| | - Benjamin Cahier
- Laboratoire de Chimie et Physique Quantiques (LCPQ) Université de Toulouse, CNRS 118 route de Narbonne F-31062 Toulouse France
| | - Wejden Jbeli
- Laboratoire de Chimie de Coordination du CNRS (LCC) Université de Toulouse, CNRS F-31077 Toulouse France
- University of Tunis El Manar Faculty of Sciences of Tunis Laboratory of Materials Crystal Chemistry and Applied Thermodynamics 2092 El Manar II Tunis Tunisia
| | - Nicolas Suaud
- Laboratoire de Chimie et Physique Quantiques (LCPQ) Université de Toulouse, CNRS 118 route de Narbonne F-31062 Toulouse France
| | - Nathalie Guihéry
- Laboratoire de Chimie et Physique Quantiques (LCPQ) Université de Toulouse, CNRS 118 route de Narbonne F-31062 Toulouse France
| | - Carine Duhayon
- Laboratoire de Chimie de Coordination du CNRS (LCC) Université de Toulouse, CNRS F-31077 Toulouse France
| | - Céline Pichon
- Laboratoire de Chimie de Coordination du CNRS (LCC) Université de Toulouse, CNRS F-31077 Toulouse France
| | - Jean‐Pascal Sutter
- Laboratoire de Chimie de Coordination du CNRS (LCC) Université de Toulouse, CNRS F-31077 Toulouse France
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[M II(H 2dapsc)]-[Cr(CN) 6] (M = Mn, Co) Chain and Trimer Complexes: Synthesis, Crystal Structure, Non-Covalent Interactions and Magnetic Properties. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27238518. [PMID: 36500611 PMCID: PMC9737345 DOI: 10.3390/molecules27238518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Revised: 11/29/2022] [Accepted: 11/30/2022] [Indexed: 12/11/2022]
Abstract
Four new heterometallic complexes combining [MII(H2dapsc)]2+ cations with the chelating H2dapsc {2,6-diacetylpyridine-bis(semicarbazone)} Schiff base ligand and [Cr(CN)6]3- anion were synthesized: {[MII(H2dapsc)]CrIII(CN)6K(H2O)2.5(EtOH)0.5}n·1.2n(H2O), M = Mn (1) and Co (2), {[Mn(H2dapsc)]2Cr(CN)6(H2O)2}Cl·H2O (3) and {[Co(H2dapsc)]2Cr(CN)6(H2O)2}Cl·2EtOH·3H2O (4). In all the compounds, M(II) centers are seven-coordinated by N3O2 atoms of H2dapsc in the equatorial plane and N or O atoms of two apical -CN/water ligands. Crystals 1 and 2 are isostructural and contain infinite negatively charged chains of alternating [MII(H2dapsc)]2+ and [CrIII(CN)6]3- units linked by CN-bridges. Compounds 3 and 4 consist of centrosymmetric positively charged trimers in which two [MII(H2dapsc)]2+ cations are bound through one [CrIII(CN)6]3- anion. All structures are regulated by π-stacking of coplanar H2dapsc moieties as well as by an extensive net of hydrogen bonding. Adjacent chains in 1 and 2 interact also by coordination bonds via a pair of K+ ions. The compounds containing MnII (1, 3) and CoII (2, 4) show a significant difference in magnetic properties. The ac magnetic measurements revealed that complexes 1 and 3 behave as a spin glass and a field-induced single-molecule magnet, respectively, while 2 and 4 do not exhibit slow magnetic relaxation in zero and non-zero dc fields. The relationship between magnetic properties and non-covalent interactions in the structures 1-4 was traced.
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Sutter JP, Béreau V, Jubault V, Bretosh K, Pichon C, Duhayon C. Magnetic anisotropy of transition metal and lanthanide ions in pentagonal bipyramidal geometry. Chem Soc Rev 2022; 51:3280-3313. [PMID: 35353106 DOI: 10.1039/d2cs00028h] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The magnetic anisotropy associated with a pentagonal bipyramidal (PBP) coordination sphere is examined on the basis of experimental and theoretical investigations. The origin and the characteristics of this anisotropy are discussed in relation to the electronic configuration of the metal ions. The effects of crystal field, structural distortion, and a second-coordination sphere on the observed anisotropies for transition meal and lanthanide ions are outlined. For the Ln derivatives, we focus on compounds showing SMM-like behavior (i.e. slow relaxation of their magnetization) in order to highlight the essential chemical and structural parameters for achieving strong axial anisotropy. The use of PBP complexes to impart controlled magnetic anisotropy in polynuclear species such as SMMs or SCMs is also addressed. This review of the magnetic anisotropies associated with a pentagonal bipyramidal coordination sphere for transition metal and lanthanide ions is intended to highlight some general trends that can guide chemists towards designing a compound with specific properties.
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Affiliation(s)
- Jean-Pascal Sutter
- Laboratoire de Chimie de Coordination du CNRS (LCC-CNRS), Université de Toulouse, CNRS, Toulouse, France.
| | - Virginie Béreau
- Laboratoire de Chimie de Coordination du CNRS (LCC-CNRS), Université de Toulouse, CNRS, Toulouse, France. .,Université de Toulouse, Institut Universitaire de Technologie Paul Sabatier-Département de Chimie, Av. Georges Pompidou, F-81104 Castres, France
| | - Valentin Jubault
- Laboratoire de Chimie de Coordination du CNRS (LCC-CNRS), Université de Toulouse, CNRS, Toulouse, France.
| | - Kateryna Bretosh
- Laboratoire de Chimie de Coordination du CNRS (LCC-CNRS), Université de Toulouse, CNRS, Toulouse, France.
| | - Céline Pichon
- Laboratoire de Chimie de Coordination du CNRS (LCC-CNRS), Université de Toulouse, CNRS, Toulouse, France.
| | - Carine Duhayon
- Laboratoire de Chimie de Coordination du CNRS (LCC-CNRS), Université de Toulouse, CNRS, Toulouse, France.
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Diószegi R, Bonczidai-Kelemen D, Bényei AC, May NV, Fábián I, Lihi N. Copper(II) Complexes of Pyridine-2,6-dicarboxamide Ligands with High SOD Activity. Inorg Chem 2022; 61:2319-2332. [PMID: 35029102 DOI: 10.1021/acs.inorgchem.1c03728] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Copper(II) complexes of pyridine-based ligands functionalized with alanine (PydiAla) and tyrosine (PydiTyr) moieties have been synthesized as novel superoxide dismutase mimics. The complexes were characterized by pH-potentiometric, spectroscopic (UV-vis, circular dichroism, mass spectrometry, electron paramagnetic resonance spectroscopy), computational (DFT), and X-ray diffraction methods. Both ligands form high stability copper(II) complexes via the (Npy,N-,N-) donor set supported by the binding of the carboxylate pendant arms. Although the coordination mode is the same for the two systems, the tyrosine containing counterpart exhibits increased copper(II) binding affinity, which is most likely due to the presence of the aromatic moiety of the side chains. Both copper(II) complexes are capable of binding N-methylimidazole, and the formation of the corresponding ternary species was observed at physiological pH. The binary and ternary copper(II) complexes exhibit high SOD activity. The PydiTyr complex exhibits about 1 order of magnitude higher activity than the PydiAla complex. This is probably due to the presence of the phenolic OH group in the former species, which promotes the binding of the superoxide anion radical to the metal center. The results serve as a basis for designing highly efficient copper(II) mimics for medical and practical applications.
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Affiliation(s)
- Róbert Diószegi
- Department of Inorganic and Analytical Chemistry, University of Debrecen, H-4032 Debrecen, Hungary.,Doctoral School of Chemistry, University of Debrecen, H-4032 Debrecen, Hungary
| | - Dóra Bonczidai-Kelemen
- Department of Inorganic and Analytical Chemistry, University of Debrecen, H-4032 Debrecen, Hungary.,Doctoral School of Chemistry, University of Debrecen, H-4032 Debrecen, Hungary
| | - Attila Cs Bényei
- Department of Physical Chemistry, University of Debrecen, H-4032 Debrecen, Hungary
| | - Nóra V May
- Centre for Structural Science, Research Centre for Natural Sciences, H-1117 Budapest, Hungary
| | - István Fábián
- Department of Inorganic and Analytical Chemistry, University of Debrecen, H-4032 Debrecen, Hungary.,MTA-DE Redox and Homogeneous Reaction Mechanisms Research Group, University of Debrecen, H-4032 Debrecen, Hungary
| | - Norbert Lihi
- Department of Inorganic and Analytical Chemistry, University of Debrecen, H-4032 Debrecen, Hungary.,MTA-DE Redox and Homogeneous Reaction Mechanisms Research Group, University of Debrecen, H-4032 Debrecen, Hungary
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Pichon C, Duhayon C, Delahaye E, Sutter J. Discrete
versus
1D Compounds based on Pentagonal Bipyramid Coordination Geometries: A Matter of Solubility? Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202100834] [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]
Affiliation(s)
- Céline Pichon
- Laboratoire de Chimie de Coordination du CNRS (LCC–CNRS) Université de Toulouse, CNRS, UPS 31077 Toulouse France
| | - Carine Duhayon
- Laboratoire de Chimie de Coordination du CNRS (LCC–CNRS) Université de Toulouse, CNRS, UPS 31077 Toulouse France
| | - Emilie Delahaye
- Laboratoire de Chimie de Coordination du CNRS (LCC–CNRS) Université de Toulouse, CNRS, UPS 31077 Toulouse France
| | - Jean‐Pascal Sutter
- Laboratoire de Chimie de Coordination du CNRS (LCC–CNRS) Université de Toulouse, CNRS, UPS 31077 Toulouse France
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Bazhenova TA, Kopotkov VA, Korchagin DV, Manakin YV, Zorina LV, Simonov SV, Yakushev IA, Mironov VS, Vasiliev AN, Maximova OV, Yagubskii EB. A Series of Novel Pentagonal-Bipyramidal Erbium(III) Complexes with Acyclic Chelating N3O2 Schiff-Base Ligands: Synthesis, Structure, and Magnetism. Molecules 2021; 26:6908. [PMID: 34834001 PMCID: PMC8622354 DOI: 10.3390/molecules26226908] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2021] [Revised: 11/12/2021] [Accepted: 11/13/2021] [Indexed: 11/29/2022] Open
Abstract
A series of six seven-coordinate pentagonal-bipyramidal (PBP) erbium complexes, with acyclic pentadentate [N3O2] Schiff-base ligands, 2,6-diacetylpyridine bis-(4-methoxybenzoylhydrazone) [H2DAPMBH], or 2,6-diacethylpyridine bis(salicylhydrazone) [H4DAPS], and various apical ligands in different charge states were synthesized: [Er(DAPMBH)(C2H5OH)Cl] (1); [Er(DAPMBH)(H2O)Cl]·2C2H5OH (2); [Er(DAPMBH)(CH3OH)Cl] (3); [Er(DAPMBH)(CH3OH)(N3)] (4); [(Et3H)N]+[Er(H2DAPS)Cl2]- (5); and [(Et3H)N]+[Y0.95Er0.05(H2DAPS)Cl2]- (6). The physicochemical properties, crystal structures, and the DC and AC magnetic properties of 1-6 were studied. The AC magnetic measurements revealed that most of Compounds 1-6 are field-induced single-molecule magnets, with estimated magnetization energy barriers, Ueff ≈ 16-28 K. The experimental study of the magnetic properties was complemented by theoretical analysis based on ab initio and crystal field calculations. An experimental and theoretical study of the magnetism of 1-6 shows the subtle impact of the type and charge state of the axial ligands on the SMM properties of these complexes.
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Affiliation(s)
- Tamara A. Bazhenova
- Institute of Problems of Chemical Physics, IPCP RAS, Chernogolovka 142432, Russia; (T.A.B.); (D.V.K.); (Y.V.M.); (L.V.Z.); (S.V.S.); (I.A.Y.); (V.S.M.); (E.B.Y.)
| | - Vyacheslav A. Kopotkov
- Institute of Problems of Chemical Physics, IPCP RAS, Chernogolovka 142432, Russia; (T.A.B.); (D.V.K.); (Y.V.M.); (L.V.Z.); (S.V.S.); (I.A.Y.); (V.S.M.); (E.B.Y.)
| | - Denis V. Korchagin
- Institute of Problems of Chemical Physics, IPCP RAS, Chernogolovka 142432, Russia; (T.A.B.); (D.V.K.); (Y.V.M.); (L.V.Z.); (S.V.S.); (I.A.Y.); (V.S.M.); (E.B.Y.)
| | - Yuriy V. Manakin
- Institute of Problems of Chemical Physics, IPCP RAS, Chernogolovka 142432, Russia; (T.A.B.); (D.V.K.); (Y.V.M.); (L.V.Z.); (S.V.S.); (I.A.Y.); (V.S.M.); (E.B.Y.)
| | - Leokadiya V. Zorina
- Institute of Problems of Chemical Physics, IPCP RAS, Chernogolovka 142432, Russia; (T.A.B.); (D.V.K.); (Y.V.M.); (L.V.Z.); (S.V.S.); (I.A.Y.); (V.S.M.); (E.B.Y.)
- Institute of Solid State Physics, ISSP RAS, Chernogolovka 142432, Russia
| | - Sergey V. Simonov
- Institute of Problems of Chemical Physics, IPCP RAS, Chernogolovka 142432, Russia; (T.A.B.); (D.V.K.); (Y.V.M.); (L.V.Z.); (S.V.S.); (I.A.Y.); (V.S.M.); (E.B.Y.)
- Institute of Solid State Physics, ISSP RAS, Chernogolovka 142432, Russia
| | - Ilya A. Yakushev
- Institute of Problems of Chemical Physics, IPCP RAS, Chernogolovka 142432, Russia; (T.A.B.); (D.V.K.); (Y.V.M.); (L.V.Z.); (S.V.S.); (I.A.Y.); (V.S.M.); (E.B.Y.)
- Kurnakov Institute of General and Inorganic Chemistry, IGIC RAS, Moscow 119333, Russia
| | - Vladimir S. Mironov
- Institute of Problems of Chemical Physics, IPCP RAS, Chernogolovka 142432, Russia; (T.A.B.); (D.V.K.); (Y.V.M.); (L.V.Z.); (S.V.S.); (I.A.Y.); (V.S.M.); (E.B.Y.)
- Shubnikov Institute of Crystallography of Federal Scientific Research Centre “Crystallography and Photonics” RAS, Moscow 119333, Russia
| | - Alexander N. Vasiliev
- Laboratory of Quantum Functional Materials, National University of Science and Technology “MISiS”, Moscow 119049, Russia;
- Lomonosov Moscow State University, Moscow 119991, Russia;
| | | | - Eduard B. Yagubskii
- Institute of Problems of Chemical Physics, IPCP RAS, Chernogolovka 142432, Russia; (T.A.B.); (D.V.K.); (Y.V.M.); (L.V.Z.); (S.V.S.); (I.A.Y.); (V.S.M.); (E.B.Y.)
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Pichon C, Suaud N, Jubault V, Duhayon C, Guihéry N, Sutter JP. Trinuclear Cyanido-Bridged [Cr 2 Fe] Complexes: To Be or not to Be a Single-Molecule Magnet, a Matter of Straightness. Chemistry 2021; 27:15484-15495. [PMID: 34523758 DOI: 10.1002/chem.202102571] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Indexed: 11/08/2022]
Abstract
Trinuclear systems of formula [{Cr(LN3O2Ph )(CN)2 }2 M(H2 LN3O2R )] (M=MnII and FeII , LN3O2R stands for pentadentate ligands) were prepared in order to assess the influence of the bending of the apical M-N≡C linkages on the magnetic anisotropy of the FeII derivatives and in turn on their Single-Molecule Magnet (SMM) behaviors. The cyanido-bridged [Cr2 M] derivatives were obtained by assembling trans-dicyanido CrIII complex [Cr(LN3O2Ph )(CN)2 ]- and divalent pentagonal bipyramid complexes [MII (H2 LN3O2R )]2+ with various R substituents (R=NH2 , cyclohexyl, S,S-mandelic) imparting different steric demand to the central moiety of the complexes. A comparative examination of the structural and magnetic properties showed an obvious effect of the deviation from straightness of the M-N≡C alignment on the slow relaxation of the magnetization exhibited by the [Cr2 Fe] complexes. Theoretical calculations have highlighted important effects of the bending of the apical C-N-Fe linkages on both the magnetic anisotropy of the FeII center and the exchange interactions with the CrIII units.
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Affiliation(s)
- Céline Pichon
- Laboratoire de Chimie de Coordination du CNRS (LCC), Université de Toulouse, CNRS, 31077, Toulouse, France
| | - Nicolas Suaud
- Laboratoire de Chimie et Physique quantiques (LCPQ), Université de Toulouse, CNRS, 118 route de Narbonne, 31062, Toulouse, France
| | - Valentin Jubault
- Laboratoire de Chimie de Coordination du CNRS (LCC), Université de Toulouse, CNRS, 31077, Toulouse, France
| | - Carine Duhayon
- Laboratoire de Chimie de Coordination du CNRS (LCC), Université de Toulouse, CNRS, 31077, Toulouse, France
| | - Nathalie Guihéry
- Laboratoire de Chimie et Physique quantiques (LCPQ), Université de Toulouse, CNRS, 118 route de Narbonne, 31062, Toulouse, France
| | - Jean-Pascal Sutter
- Laboratoire de Chimie de Coordination du CNRS (LCC), Université de Toulouse, CNRS, 31077, Toulouse, France
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Liu Y, Han C, Cui GH. Two Cd(II) coordination polymers containing bis(benzimidazole) ligands as luminescent probes for acetylacetone and Fe3+ ions. Inorganica Chim Acta 2021. [DOI: 10.1016/j.ica.2021.120499] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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9
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Houard F, Gendron F, Suffren Y, Guizouarn T, Dorcet V, Calvez G, Daiguebonne C, Guillou O, Le Guennic B, Mannini M, Bernot K. Single-chain magnet behavior in a finite linear hexanuclear molecule. Chem Sci 2021; 12:10613-10621. [PMID: 34447554 PMCID: PMC8356920 DOI: 10.1039/d1sc02033a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Accepted: 07/09/2021] [Indexed: 11/21/2022] Open
Abstract
The careful monitoring of crystallization conditions of a mixture made of a TbIII building block and a substituted nitronyl-nitroxide that typically provides infinite coordination polymers (chains), affords a remarkably stable linear hexanuclear molecule made of six TbIII ions and five NIT radicals. The hexanuclear units are double-bridged by water molecules but ab initio calculations demonstrate that this bridge is inefficient in mediating any magnetic interaction other than a small dipolar antiferromagnetic coupling. Surprisingly the hexanuclears, despite being finite molecules, show a single-chain magnet (SCM) behavior. This results in a magnetic hysteresis at low temperature whose coercive field is almost doubled when compared to the chains. We thus demonstrate that finite linear molecules can display SCM magnetic relaxation, which is a strong asset for molecular data storage purposes because 1D magnetic relaxation is more robust than the relaxation mechanisms observed in single-molecule magnets (SMMs) where under-barrier magnetic relaxation can operate.
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Affiliation(s)
- Felix Houard
- Univ Rennes, INSA Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes), UMR 6226 F 35000 Rennes France
| | - Frederic Gendron
- Univ Rennes, INSA Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes), UMR 6226 F 35000 Rennes France
| | - Yan Suffren
- Univ Rennes, INSA Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes), UMR 6226 F 35000 Rennes France
| | - Thierry Guizouarn
- Univ Rennes, INSA Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes), UMR 6226 F 35000 Rennes France
| | - Vincent Dorcet
- Univ Rennes, INSA Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes), UMR 6226 F 35000 Rennes France
| | - Guillaume Calvez
- Univ Rennes, INSA Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes), UMR 6226 F 35000 Rennes France
| | - Carole Daiguebonne
- Univ Rennes, INSA Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes), UMR 6226 F 35000 Rennes France
| | - Olivier Guillou
- Univ Rennes, INSA Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes), UMR 6226 F 35000 Rennes France
| | - Boris Le Guennic
- Univ Rennes, INSA Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes), UMR 6226 F 35000 Rennes France
| | - Matteo Mannini
- LAboratory for Molecular Magnetism (LA.M.M.), Dipartimento di Chimica "Ugo Schiff"(DICUS), Università degli Studi di Firenze, INSTM, UdR Firenze Via della Lastruccia n. 3, Sesto Fiorentino (FI) 50019 Italy
| | - Kevin Bernot
- Univ Rennes, INSA Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes), UMR 6226 F 35000 Rennes France
- Institut Universitaire de France 1 rue Descartes 75005 Paris France
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Bazhenova T, Zorina L, Simonov S, Manakin Y, Kornev A, Lyssenko K, Mironov V, Gilmutdinov I, Yagubskii E. A novel family of hepta-coordinated Cr(III) complexes with a planar pentadentate N3O2 Schiff base ligand: synthesis, structure and magnetism. Inorganica Chim Acta 2021. [DOI: 10.1016/j.ica.2021.120358] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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11
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Jiménez JR, Doistau B, Poncet M, Piguet C. Heteroleptic trivalent chromium in coordination chemistry: Novel building blocks for addressing old challenges in multimetallic luminescent complexes. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2020.213750] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Chukanova OM, Bazhenova TA, Sheverdenkina OG, Manakin YV, Yakushev IA, Kornev AB, Sedov IV. Activity of a New Chromium(III) Complex with a Pentadentate (N3O2) Schiff-Base Ligand in the Reaction of Carbon Dioxide with Propylene Oxide. KINETICS AND CATALYSIS 2021. [DOI: 10.1134/s0023158421030010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Crystal Engineering of Schiff Base Zn(II) and Cd(II) Homo- and Zn(II)M(II) (M = Mn or Cd) Heterometallic Coordination Polymers and Their Ability to Accommodate Solvent Guest Molecules. Molecules 2021; 26:molecules26082317. [PMID: 33923549 PMCID: PMC8073138 DOI: 10.3390/molecules26082317] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Revised: 04/07/2021] [Accepted: 04/09/2021] [Indexed: 01/14/2023] Open
Abstract
Based on solvothermal synthesis, self-assembly of the heptadentate 2,6-diacetylpyridine bis(nicotinoylhydrazone) Schiff base ligand (H2L) and Zn(II) and/or Cd(II) salts has led to the formation of three homometallic [CdL]n (1), {[CdL]∙0.5dmf∙H2O}n (2) and {[ZnL]∙0.5dmf∙1.5H2O}n (3), as well as two heterometallic {[Zn0.75Cd1.25L2]∙dmf∙0.5H2O}n (4) and {[MnZnL2]∙dmf∙3H2O}n coordination polymers. Compound 1 represents a 1D chain, whereas 2-5 are isostructural and isomorphous two-dimensional structures. The entire series was characterized by IR spectroscopy, thermogravimetric analysis, single-crystal X-ray diffraction and emission measurements. 2D coordination polymers accommodate water and dmf molecules in their cage-shaped interlayer spaces, which are released when the samples are heated. Thus, three solvated crystals were degassed at two temperatures and their photoluminescent and adsorption-desorption properties were recorded in order to validate this assumption. Solvent-free samples reveal an increase in volume pore, adsorption specific surface area and photoluminescence with regard to synthesized crystals.
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Choudhury A, Pichon C, Sutter JP, Pamu D, Sarma B, Mudoi PP, Gogoi N. Accessing water processable cyanido bridged chiral heterobimetallic Co(ii)-Fe(iii) one dimensional network. Chem Commun (Camb) 2021; 57:207-210. [PMID: 33300509 DOI: 10.1039/d0cc05356b] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
A water processable cyanido bridged extended chiral heterobimetallic Co(ii)-Fe(iii) network is assembled. The unusual water processability of the coordination polymer originates from dangling hydrophilic substituents. The present approach offers a simple route to impart solution processability to cyanido bridged molecular magnetic materials.
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Affiliation(s)
- Anup Choudhury
- Department of Chemical Sciences, Tezpur University, Napaam-784028, Sonitpur, Assam, India.
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15
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Sasnovskaya VD, Zorina LV, Simonov SV, Talantsev AD, Mikhailov AA, Kostin GA, Yagubskii EB. Cyano-bridged polynuclear coordination compounds derived from paramagnetic [Mn(H 2daptsc)] 2+ and photochromic [Fe(CN) 5NO] 2− building blocks. CrystEngComm 2021. [DOI: 10.1039/d0ce01863e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Metal complexes with H2daptsc ligand were first used as building blocks to create polynuclear multifunctional materials.
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16
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Bazhenova TA, Zorina LV, Simonov SV, Mironov VS, Maximova OV, Spillecke L, Koo C, Klingeler R, Manakin YV, Vasiliev AN, Yagubskii EB. The first pentagonal-bipyramidal vanadium(III) complexes with a Schiff-base N 3O 2 pentadentate ligand: synthesis, structure and magnetic properties. Dalton Trans 2020; 49:15287-15298. [PMID: 33112327 DOI: 10.1039/d0dt03092a] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A series of three mononuclear pentagonal-bipyramidal V(iii) complexes with the equatorial pentadentate N3O2 ligand (2,6-diacethylpyridinebis(benzoylhydrazone), H2DAPBH) in the different charge states (H2DAPBH0, HDAPBH1-, DAPBH2-) and various apical ligands (Cl-, CH3OH, SCN-) were synthesized and characterized structurally and magnetically: [V(H2DAPBH)Cl2]Cl·C2H5OH (1), [V(HDAPBH)(NCS)2]·0.5CH3CN·0.5CH3OH (2) and [V(DAPBH)(CH3OH)2]Cl·CH3OH (3). All three complexes reveal paramagnetic behavior, resulting from isolated S = 1 spins with positive zero-field splitting energy expected for the high-spin ground state of the V3+ (3d2) ion in a PBP coordination. Detailed high-field EPR measurements for compound 3 show that its magnetic properties are best described by using the spin Hamiltonian with the positive ZFS energy (D = +4.1 cm-1) and pronounced dimer-like antiferromagnetic spin coupling (J = -1.1 cm-1). Theoretical analysis based on superexchange calculations reveals that the long-range spin coupling between distant V3+ ions (8.65 Å) is mediated through π-stacking contacts between the planar DAPBH2- ligands of two neighboring [V(DAPBH)(CH3OH)2]+ complexes.
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Affiliation(s)
- Tamara A Bazhenova
- Institute of Problems of Chemical Physics, RAS, Chernogolovka 142432, Russia.
| | | | - Sergey V Simonov
- Institute of Solid State Physics, RAS, Chernogolovka 142432, Russia
| | - Vladimir S Mironov
- Institute of Problems of Chemical Physics, RAS, Chernogolovka 142432, Russia. and Shubnikov Institute of Crystallography of Federal Scientific Research Centre "Crystallography and Photonics", RAS, Moscow, Russia.
| | - Olga V Maximova
- Institute of Problems of Chemical Physics, RAS, Chernogolovka 142432, Russia. and Lomonosov Moscow State University, Moscow 119991, Russia and National University of Science and Technology "MISiS", Moscow 119049, Russia
| | - Lena Spillecke
- Kirchhoff Institute for Physics, Heidelberg University, 69120 Heidelberg, Germany.
| | - Changhyun Koo
- Kirchhoff Institute for Physics, Heidelberg University, 69120 Heidelberg, Germany.
| | - Rüdiger Klingeler
- Kirchhoff Institute for Physics, Heidelberg University, 69120 Heidelberg, Germany. and Centre for Advanced Materials (CAM), Heidelberg University, 69120 Heidelberg, Germany
| | - Yuriy V Manakin
- Institute of Problems of Chemical Physics, RAS, Chernogolovka 142432, Russia.
| | - Alexander N Vasiliev
- Lomonosov Moscow State University, Moscow 119991, Russia and National Research South Ural State University, Chelyabinsk 454080, Russia
| | - Eduard B Yagubskii
- Institute of Problems of Chemical Physics, RAS, Chernogolovka 142432, Russia.
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17
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Stojičkov M, Sturm S, Čobeljić B, Pevec A, Jevtović M, Scheitler A, Radanović D, Senft L, Turel I, Andjelković K, Miehlich M, Meyer K, Ivanović‐Burmazović I. Cobalt(II), Zinc(II), Iron(III), and Copper(II) Complexes Bearing Positively Charged Quaternary Ammonium Functionalities: Synthesis, Characterization, Electrochemical Behavior, and SOD Activity. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.202000415] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Marko Stojičkov
- Faculty of Chemistry University of Belgrade Studentski trg 12‐16 11000 Belgrade Serbia
| | - Sabrina Sturm
- Department of Chemistry and Pharmacy Friedrich‐Alexander University Erlangen‐Nürnberg Egerlandstr. 1 91058 Erlangen Germany
| | - Božidar Čobeljić
- Faculty of Chemistry University of Belgrade Studentski trg 12‐16 11000 Belgrade Serbia
| | - Andrej Pevec
- Faculty of Chemistry and Chemical Technology University of Ljubljana Večna pot 113 1000 Ljubljana Slovenia
| | - Mima Jevtović
- Faculty of Chemistry University of Belgrade Studentski trg 12‐16 11000 Belgrade Serbia
| | - Andreas Scheitler
- Department of Chemistry and Pharmacy Friedrich‐Alexander University Erlangen‐Nürnberg Egerlandstr. 1 91058 Erlangen Germany
| | - Dušanka Radanović
- Institute of Chemistry Technology and Metallurgy University of Belgrade Njegoševa 12, P.O. Box 815 11000 Belgrade Serbia
| | - Laura Senft
- Department of Chemistry and Pharmacy Friedrich‐Alexander University Erlangen‐Nürnberg Egerlandstr. 1 91058 Erlangen Germany
| | - Iztok Turel
- Faculty of Chemistry and Chemical Technology University of Ljubljana Večna pot 113 1000 Ljubljana Slovenia
| | - Katarina Andjelković
- Faculty of Chemistry University of Belgrade Studentski trg 12‐16 11000 Belgrade Serbia
| | - Matthias Miehlich
- Department of Chemistry and Pharmacy Friedrich‐Alexander University Erlangen‐Nürnberg Egerlandstr. 1 91058 Erlangen Germany
| | - Karsten Meyer
- Department of Chemistry and Pharmacy Friedrich‐Alexander University Erlangen‐Nürnberg Egerlandstr. 1 91058 Erlangen Germany
| | - Ivana Ivanović‐Burmazović
- Department of Chemistry and Pharmacy Friedrich‐Alexander University Erlangen‐Nürnberg Egerlandstr. 1 91058 Erlangen Germany
- Department Chemie Ludwigs‐Maximilians‐Universität Butenandtstraße 5‐13 81377 München Germany
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18
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Mondal A, Kharwar AK, Sahu PK, Konar S. Alignment of Axial Anisotropy in a 1D Coordination Polymer shows Improved Field Induced Single Molecule Magnet Behavior over a Mononuclear Seven Coordinated Fe II Complex. Chem Asian J 2020; 15:2681-2688. [PMID: 32603028 DOI: 10.1002/asia.202000666] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Revised: 06/26/2020] [Indexed: 11/11/2022]
Abstract
Herein, we report a CN-bridged alternating FeII -NiII 1D chain to ensure the alignment of axial anisotropy and improve the single molecule magnet (SMM) behavior in seven coordinated FeII compound. The chain was constructed from hepta coordinated Fe(II) complex as an anisotropic building unit and diamagnetic nickel tetra cyanate as a bridging ligand. The magnetic measurements show the easy-axis anisotropy of the seven coordinated Fe(II) complex and field induced SMM behavior with spin reversal energy barrier Ueff =61(2) K (42 cm-1 ) and pre-exponential relaxation time τ0 =1.9×10-8 s. The detailed analysis of the relaxation dynamics discloses that the Orbach process plays an important role in slow relaxation of magnetization for this compound. Notably, this example represents a remarkable energy barrier observed in hepta coordinated Fe(II) SMMs. The ab initio calculations estimate the magnitude of axial anisotropy and show the parallel orientation of the anisotropic axis throughout the 1D polymeric chain. In addition, it is also reported that the presence of weak π accepter ligands in the distorted axial position enhance the easy-axis anisotropy.
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Affiliation(s)
- Arpan Mondal
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass road, Bhauri, Bhopal, 462066, MP, India
| | - Ajit Kumar Kharwar
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass road, Bhauri, Bhopal, 462066, MP, India
| | - Pradip Kumar Sahu
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass road, Bhauri, Bhopal, 462066, MP, India
| | - Sanjit Konar
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass road, Bhauri, Bhopal, 462066, MP, India
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19
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Bretosh K, Béreau V, Duhayon C, Pichon C, Sutter JP. A ferromagnetic Ni( ii)–Cr( iii) single-chain magnet based on pentagonal bipyramidal building units. Inorg Chem Front 2020. [DOI: 10.1039/c9qi01489f] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The first example of a ferromagnetic Ni(ii)–Cr(iii) single-chain magnet fashioned using pentagonal bipyramidal Ni(ii) complexes with Ising-type anisotropy.
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Affiliation(s)
- Kateryna Bretosh
- Laboratoire de Chimie de Coordination du CNRS (LCC-CNRS)
- Université de Toulouse
- CNRS
- Toulouse
- France
| | - Virginie Béreau
- Laboratoire de Chimie de Coordination du CNRS (LCC-CNRS)
- Université de Toulouse
- CNRS
- Toulouse
- France
| | - Carine Duhayon
- Laboratoire de Chimie de Coordination du CNRS (LCC-CNRS)
- Université de Toulouse
- CNRS
- Toulouse
- France
| | - Céline Pichon
- Laboratoire de Chimie de Coordination du CNRS (LCC-CNRS)
- Université de Toulouse
- CNRS
- Toulouse
- France
| | - Jean-Pascal Sutter
- Laboratoire de Chimie de Coordination du CNRS (LCC-CNRS)
- Université de Toulouse
- CNRS
- Toulouse
- France
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20
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Zorina LV, Simonov SV, Sasnovskaya VD, Talantsev AD, Morgunov RB, Mironov VS, Yagubskii EB. Slow Magnetic Relaxation, Antiferromagnetic Ordering, and Metamagnetism in Mn II (H 2 dapsc)-Fe III (CN) 6 Chain Complex with Highly Anisotropic Fe-CN-Mn Spin Coupling. Chemistry 2019; 25:14583-14597. [PMID: 31361924 DOI: 10.1002/chem.201902551] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Revised: 07/29/2019] [Indexed: 11/07/2022]
Abstract
Reactions of [Mn(H2 dapsc)Cl2 ]⋅H2 O (dapsc=2,6- diacetylpyridine bis(semicarbazone)) with K3 [Fe(CN)6 ] and (PPh4 )3 [Fe(CN)6 ] lead to the formation of the chain polymeric complex {[Mn(H2 dapsc)][Fe(CN)6 ][K(H2 O)3.5 ]}n ⋅1.5n H2 O (1) and the discrete pentanuclear complex {[Mn(H2 dapsc)]3 [Fe(CN)6 ]2 (H2 O)2 }⋅4 CH3 OH⋅3.4 H2 O (2), respectively. In the crystal structure of 1 the high-spin [MnII (H2 dapsc)]2+ cations and low-spin hexacyanoferrate(III) anions are assembled into alternating heterometallic cyano-bridged chains. The K+ ions are located between the chains and are coordinated by oxygen atoms of the H2 dapsc ligand and water molecules. The magnetic structure of 1 is built from ferrimagnetic chains, which are antiferromagnetically coupled. The complex exhibits metamagnetism and frequency-dependent ac magnetic susceptibility, indicating single-chain magnetic behavior with a Mydosh-parameter φ=0.12 and an effective energy barrier (Ueff /kB ) of 36.0 K with τ0 =2.34×10-11 s for the spin relaxation. Detailed theoretical analysis showed highly anisotropic intra-chain spin coupling between [FeIII (CN)6 ]3- and [MnII (H2 dapsc)]2+ units resulting from orbital degeneracy and unquenched orbital momentum of [FeIII (CN)6 ]3- complexes. The origin of the metamagnetic transition is discussed in terms of strong magnetic anisotropy and weak AF interchain spin coupling.
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Affiliation(s)
- Leokadiya V Zorina
- Institute of Solid State Physics, Russian Academy of Sciences, Academician Ossipyan Str. 2, Chernogolovka MD, Russia
| | - Sergey V Simonov
- Institute of Solid State Physics, Russian Academy of Sciences, Academician Ossipyan Str. 2, Chernogolovka MD, Russia
| | - Valentina D Sasnovskaya
- Institute of Problems of Chemical Physics, Russian Academy of Sciences, Semenov's av. 1, Chernogolovka, MD, Russia
| | - Artem D Talantsev
- Institute of Problems of Chemical Physics, Russian Academy of Sciences, Semenov's av. 1, Chernogolovka, MD, Russia
| | - Roman B Morgunov
- Institute of Problems of Chemical Physics, Russian Academy of Sciences, Semenov's av. 1, Chernogolovka, MD, Russia
| | - Vladimir S Mironov
- Shubnikov Institute of Crystallography of Federal Scientific Research, Centre "Crystallography and Photonics", Russian Academy of Sciences, Leninskii av. 59, Moscow, Russia
| | - Eduard B Yagubskii
- Institute of Problems of Chemical Physics, Russian Academy of Sciences, Semenov's av. 1, Chernogolovka, MD, Russia
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21
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Alexandru MG, Marino N, Visinescu D, De Munno G, Andruh M, Bentama A, Lloret F, Julve M. A novel octacyanido dicobalt(iii) building block for the construction of heterometallic compounds. NEW J CHEM 2019. [DOI: 10.1039/c9nj00420c] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
The first bimetallic 3d cyanido-bearing complex with 2,5-dpp as a bridge, (Ph4P)2[Co2III(μ-2,5-dpp)(CN)8]·2H2O, is obtained and used as a metalloligand with the [Mn(MAC)(H2O)2]2+ cation to build a {CoIIIMnII} heterobimetallic chain.
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Affiliation(s)
- Maria-Gabriela Alexandru
- Department of Inorganic Chemistry
- Physical Chemistry and Electrochemistry
- Faculty of Applied Chemistry and Materials Science
- University Politehnica of Bucharest
- 011061 Bucharest
| | - Nadia Marino
- Dipartimento di Chimica e Tecnologie Chimiche
- Università della Calabria
- 87036 Rende
- Italy
| | - Diana Visinescu
- Coordination and Supramolecular Chemistry Laboratory
- “Ilie Murglescu” Institute of Physical Chemistry
- Romanian Academy
- Bucharest 060021
- Romania
| | - Giovanni De Munno
- Dipartimento di Chimica e Tecnologie Chimiche
- Università della Calabria
- 87036 Rende
- Italy
| | - Marius Andruh
- Inorganic Chemistry Laboratory
- Faculty of Chemistry
- University of Bucharest
- Bucharest
- Romania
| | - Abdeslem Bentama
- Laboratoire de Chimie Organique Appliquée
- Faculté des Sciences Techniques de Fès
- Université Sidi Mohammed Ben Abdellah
- Fès
- Morocco
| | - Francesc Lloret
- Departament de Química Inorgànica/Instituto de Ciencia Molecular (ICMol)
- Universitat de València
- 46990 Paterna
- Spain
| | - Miguel Julve
- Departament de Química Inorgànica/Instituto de Ciencia Molecular (ICMol)
- Universitat de València
- 46990 Paterna
- Spain
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22
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Drahoš B, Herchel R, Trávníček Z. Single-Chain Magnet Based on 1D Polymeric Azido-Bridged Seven-Coordinate Fe(II) Complex with a Pyridine-Based Macrocyclic Ligand. Inorg Chem 2018; 57:12718-12726. [DOI: 10.1021/acs.inorgchem.8b01798] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Bohuslav Drahoš
- Division of Biologically Active Complexes and Molecular Magnets, Regional Centre of Advanced Technologies and Materials, Faculty of Science, Palacký University, Šlechtitelů 27, CZ-783 71 Olomouc, Czech Republic
| | - Radovan Herchel
- Division of Biologically Active Complexes and Molecular Magnets, Regional Centre of Advanced Technologies and Materials, Faculty of Science, Palacký University, Šlechtitelů 27, CZ-783 71 Olomouc, Czech Republic
| | - Zdeněk Trávníček
- Division of Biologically Active Complexes and Molecular Magnets, Regional Centre of Advanced Technologies and Materials, Faculty of Science, Palacký University, Šlechtitelů 27, CZ-783 71 Olomouc, Czech Republic
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23
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Pichon C, Suaud N, Duhayon C, Guihéry N, Sutter JP. Cyano-Bridged Fe(II)-Cr(III) Single-Chain Magnet Based on Pentagonal Bipyramid Units: On the Added Value of Aligned Axial Anisotropy. J Am Chem Soc 2018; 140:7698-7704. [PMID: 29888914 DOI: 10.1021/jacs.8b03891] [Citation(s) in RCA: 61] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
A cyano-bridged Fe(II)-Cr(III) single-chain magnet designed to ensure a parallel orientation of the axial anisotropy of the building units is reported. This ferromagnetic chain compound consists of a pentagonal bipyramid Fe(II) complex with Ising-type anisotropy and a dicyanide Cr(III) complex interlinked through their apical positions. It is characterized by an energy gap for the magnetization reversal of Δeff/ kB = 113 K and exhibits magnetic hysteresis with a coercive field of 1400 Oe at 2 K which positions this compound among the very few examples of SCMs with spin reversal barriers above 100 K. The quite remarkable performances of this single-strand SCM are attributed to the alignment of the local anisotropy axes, which is supported by ab initio modeling. A discrete Cr2Fe complex based on the same building units and behaving as a SMM in zero field is also reported.
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Affiliation(s)
- Céline Pichon
- LCC-CNRS , Université de Toulouse, CNRS , Toulouse F-31077 , France
| | - Nicolas Suaud
- LCPQ , Université de Toulouse, CNRS, UT3-Paul Sabatier , Toulouse 31062 , France
| | - Carine Duhayon
- LCC-CNRS , Université de Toulouse, CNRS , Toulouse F-31077 , France
| | - Nathalie Guihéry
- LCPQ , Université de Toulouse, CNRS, UT3-Paul Sabatier , Toulouse 31062 , France
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24
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Manakin YV, Mironov VS, Bazhenova TA, Lyssenko KA, Gilmutdinov IF, Bikbaev KS, Masitov AA, Yagubskii EB. (Et4N)[MoIII(DAPBH)Cl2], the first pentagonal-bipyramidal Mo(iii) complex with a N3O2-type Schiff-base ligand: manifestation of unquenched orbital momentum and Ising-type magnetic anisotropy. Chem Commun (Camb) 2018; 54:10084-10087. [DOI: 10.1039/c8cc06038j] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
We demonstrate that a planar pentadentate organic ligand can generate sufficiently strong ligand-field to stabilize the low-spin orbitally-degenerate configuration of Mo(iii) that results in strong Ising-type magnetic anisotropy.
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Affiliation(s)
- Yu. V. Manakin
- Institute of Problems of Chemical Physics
- IPCP RAS
- Chernogolovka
- Russia
| | - V. S. Mironov
- Institute of Problems of Chemical Physics
- IPCP RAS
- Chernogolovka
- Russia
- Shubnikov Institute of Crystallography of Federal Scientific Research Centre “Crystallography and Photonics” RAS
| | - T. A. Bazhenova
- Institute of Problems of Chemical Physics
- IPCP RAS
- Chernogolovka
- Russia
| | - K. A. Lyssenko
- A. N. Nesmeyanov Institute of Organoelement Compounds
- RAS
- Moscow
- Russia
| | | | - K. Sh. Bikbaev
- Institute of Problems of Chemical Physics
- IPCP RAS
- Chernogolovka
- Russia
| | - A. A. Masitov
- Institute of Problems of Chemical Physics
- IPCP RAS
- Chernogolovka
- Russia
| | - E. B. Yagubskii
- Institute of Problems of Chemical Physics
- IPCP RAS
- Chernogolovka
- Russia
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