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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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Mironov VS, Bazhenova TA, Manakin YV, Yagubskii EB. Pentagonal-bipyramidal 4d and 5d complexes with unquenched orbital angular momentum as a unique platform for advanced single-molecule magnets: current state and perspectives. Dalton Trans 2023; 52:509-539. [PMID: 36537237 DOI: 10.1039/d2dt02954e] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
This article overviews the current state and prospects of the concept of advanced single-molecule magnets (SMMs) based on low-spin (S = 1/2) pentagonal-bipyramidal (PBP) 4d3 and 5d3 complexes with unquenched orbital angular momentum. This approach is based on the unique property of PBP 4d3 and 5d3 complexes to cause highly anisotropic spin coupling of perfect uniaxial symmetry, -JzSziSzj - Jxy(SxiSxj + SyiSyj), regardless of the local geometric symmetry. The M(4d/5d)-M(3d) exchange-coupled pairs in the apical positions of the PBP complexes produce Ising-type exchange interactions (|Jz| > |Jxy|), which serve as a powerful source of uniaxial magnetic anisotropy of a SMM cluster. In polynuclear heterometallic 4d/5d-3d complexes embodying PBP 4d/5d units and high-spin 3d ions, anisotropic Ising-type exchange interactions produce a double-well potential with high energy barriers Ueff, which is controlled by the anisotropic exchange parameters Jz, Jxy. Theoretical analysis shows that the barrier is proportional to the difference |Jz - Jxy| and to the number n of the apical 4d/5d-3d pairs in a SMM cluster, Ueff ∝ |Jz - Jxy|n, which provides an opportunity to scale up the barrier Ueff and blocking temperature TB up to the record values. A novel family of 4d/5d complexes with forced PBP coordination provided by structurally rigid planar pentadentate Schiff-base ligands in the equatorial plane is discussed as a better alternative to the cyanometallates. The possibility of a significant increase in the anisotropic exchange parameters Jz, Jxy in PBP complexes with monoatomic apical μ-bridging ligands is examined. The basic principles of molecular engineering the highest barrier through anisotropic exchange interactions of PBP 4d/5d complexes are formulated. The theoretical and experimental results taken together indicate that the concept of high-performance SMMs based on 4d/5d PBP complexes with unquenched orbital angular momentum is an attractive alternative to the currently dominant lanthanide-based SMM strategy.
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Affiliation(s)
- V S Mironov
- Institute of Problems of Chemical Physics RAS, Federal Research Center of Problems of Chemical Physics and Medical Chemistry RAS, Chernogolovka 142432, Russia. .,Shubnikov Institute of Crystallography of Federal Scientific Research Centre "Crystallography and Photonics" RAS, Moscow, Russia
| | - T A Bazhenova
- Institute of Problems of Chemical Physics RAS, Federal Research Center of Problems of Chemical Physics and Medical Chemistry RAS, Chernogolovka 142432, Russia.
| | - Yu V Manakin
- Institute of Problems of Chemical Physics RAS, Federal Research Center of Problems of Chemical Physics and Medical Chemistry RAS, Chernogolovka 142432, Russia.
| | - E B Yagubskii
- Institute of Problems of Chemical Physics RAS, Federal Research Center of Problems of Chemical Physics and Medical Chemistry RAS, Chernogolovka 142432, Russia.
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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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Wen X, Chen W, Hou J, Wu H, Liu Y, Sun C. SYNTHESES, CHARACTERIZATION, AND CRYSTAL STRUCTURES OF COBALT(III) COMPLEXES DERIVED FROM 2-(((2- (PYRROLIDIN-1-YL)ETHYL)IMINO)METHYL) PHENOL WITH THE ANTIBACTERIAL ACTIVITY. J STRUCT CHEM+ 2022. [DOI: 10.1134/s0022476622020019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Tan SH, Chen ZH, Luo H, Liu T, Zhong GQ. Synthesis, crystal structure and photocatalytic properties of two bismuth(III) complexes with different N-containing heterocycles. Polyhedron 2022. [DOI: 10.1016/j.poly.2022.115768] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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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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