1
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Dadmehr P, Bikas R, Lis T. Chemical CO 2 fixation using a cyanido bridged heterometallic Zn(II)-Mn(II) 2D coordination polymer. Dalton Trans 2024. [PMID: 39221996 DOI: 10.1039/d4dt01630k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/04/2024]
Abstract
A new cyanido bridged Zn(II)-Mn(II) mixed-metal coordination polymer, {[Zn(μ-L)(μ-CN)2Mn0.5]·(CH3OH)}n (1), has been synthesized by the reaction of Zn(CN)2, Mn(II) salts and a hydrazone ligand (HL = (E)-N'-(phenyl(pyridin-2-yl)methylene)isonicotinohydrazide) in methanol. Compound 1 was characterized using various analytical methods (including elemental analysis, photoluminescence, FT-IR, XRD, SEM, and EDX analyses, and TGA), and its structure was determined by X-ray analysis. These analyses confirmed the formation of a mixed metal Zn(II)-Mn(II) coordination polymer containing both cyanide and hydrazone bridging ligands. This mixed metal coordination polymer exhibits interesting emission spectra by having several emissions via excitation at 230, 270, 375 and 385 nm. The catalytic activity of compound 1 in chemical CO2 fixation was investigated in the presence of epoxides, and the effects of various parameters on its catalytic performance were evaluated. The results of catalytic studies show that compound 1 can efficiently catalyze the chemical CO2 fixation reaction under mild conditions. The amount of co-catalyst, temperature of the reaction, nature of the solvent and also the substituent connected to the epoxide ring are some of the important parameters that have considerable effects on the catalytic activity of 1.
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Affiliation(s)
- Parvaneh Dadmehr
- Department of Chemistry, Faculty of Science, Imam Khomeini International University, 34148-96818, Qazvin, Iran.
| | - Rahman Bikas
- Department of Chemistry, Faculty of Science, Imam Khomeini International University, 34148-96818, Qazvin, Iran.
| | - Tadeusz Lis
- Faculty of Chemistry, University of Wroclaw, Joliot-Curie 14, Wroclaw 50-383, Poland
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2
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Xu FX, Zhou YT, Zhang CC, Zhang XY, Wei HY, Wang XY. Syntheses, Structures, and Magnetic Properties of Three Cyano-Bridged Fe II-Mo III Single-Molecule Magnets. Inorg Chem 2023; 62:15465-15478. [PMID: 37699414 DOI: 10.1021/acs.inorgchem.3c01803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/14/2023]
Abstract
Three new cyano-bridged FeII-MoIII complexes assembled from the [MoIII(CN)7]4- unit, FeII ions, and three pentadentate N3O2 ligands, namely {[Fe2H3(dapab)2][Mo(CN)6]}n·2H2O·3.5MeCN (1), [Fe(H2dapb)(H2O)][Fe(Hdapb)(H2O)][Mo(CN)6]·4H2O·3MeCN (2), and [Fe(H2dapba)(H2O)]2[Mo(CN)7]·6H2O (3) (H2dapab = 2,6-diacetylpyridine bis(2-aminobenzoylhydrazone), H2dapb = 2,6-diacetylpyridine bis(benzoylhydrazone), H2dapba = 2,6-diacetylpyridine bis(4-aminobenzoylhydrazone)), have been synthesized and characterized. Single-crystal structure analyses suggest that complex 1 contains a one-dimensional (1D) chain structure where two FeII ions are bridged by the in situ generated [MoIII(CN)6]3- unit through two trans-cyanide groups into trinuclear Fe2IIMoIII clusters that are further linked by the amino of the ligand into an infinite chain. Complexes 2 and 3 are cyano-bridged Fe2IIMoIII trinuclear clusters with two FeII ions connected by the [MoIII(CN)6]3- and [MoIII(CN)7]4- units, respectively. Direct current magnetic studies confirmed the ferromagnetic interactions between the cyano-bridged FeII and MoIII centers and significant easy-axis magnetic anisotropy for all three complexes. Furthermore, complexes 1-3 exhibit slow magnetic relaxation under a zero dc field, with relaxation barriers of 42.3, 21.6, and 14.4 K, respectively, making them the first examples of cyano-bridged FeII-MoIII single-molecule magnets.
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Affiliation(s)
- Fang-Xue Xu
- State Key Laboratory of Coordination Chemistry, Collaborative Innovation Center of Advanced Microstructures, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Yu-Ting Zhou
- State Key Laboratory of Coordination Chemistry, Collaborative Innovation Center of Advanced Microstructures, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Cheng-Cheng Zhang
- State Key Laboratory of Coordination Chemistry, Collaborative Innovation Center of Advanced Microstructures, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Xin-Yu Zhang
- State Key Laboratory of Coordination Chemistry, Collaborative Innovation Center of Advanced Microstructures, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Hai-Yan Wei
- Jiangsu Key Laboratory of Biofunctional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, China
| | - Xin-Yi Wang
- State Key Laboratory of Coordination Chemistry, Collaborative Innovation Center of Advanced Microstructures, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
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3
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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: 17] [Impact Index Per Article: 8.5] [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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4
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Shi L, Shao D, Wei X, Dunbar KR, Wang X. Enhanced Single‐Chain Magnet Behavior via Anisotropic Exchange in a Cyano‐Bridged Mo
III
–Mn
II
Chain. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202001706] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Le Shi
- State Key Laboratory of Coordination Chemistry Collaborative Innovation Center of Advanced Microstructures School of Chemistry and Chemical Engineering, Nanjing University Nanjing 210023 China
| | - Dong Shao
- State Key Laboratory of Coordination Chemistry Collaborative Innovation Center of Advanced Microstructures School of Chemistry and Chemical Engineering, Nanjing University Nanjing 210023 China
| | - Xiao‐Qin Wei
- State Key Laboratory of Coordination Chemistry Collaborative Innovation Center of Advanced Microstructures School of Chemistry and Chemical Engineering, Nanjing University Nanjing 210023 China
| | - Kim R. Dunbar
- Department of Chemistry Texas A & M University College Station TX 77840 USA
| | - Xin‐Yi Wang
- State Key Laboratory of Coordination Chemistry Collaborative Innovation Center of Advanced Microstructures School of Chemistry and Chemical Engineering, Nanjing University Nanjing 210023 China
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5
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Shi L, Shao D, Wei X, Dunbar KR, Wang X. Enhanced Single‐Chain Magnet Behavior via Anisotropic Exchange in a Cyano‐Bridged Mo
III
–Mn
II
Chain. Angew Chem Int Ed Engl 2020; 59:10379-10384. [DOI: 10.1002/anie.202001706] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2020] [Revised: 03/22/2020] [Indexed: 11/05/2022]
Affiliation(s)
- Le Shi
- State Key Laboratory of Coordination Chemistry Collaborative Innovation Center of Advanced Microstructures School of Chemistry and Chemical Engineering, Nanjing University Nanjing 210023 China
| | - Dong Shao
- State Key Laboratory of Coordination Chemistry Collaborative Innovation Center of Advanced Microstructures School of Chemistry and Chemical Engineering, Nanjing University Nanjing 210023 China
| | - Xiao‐Qin Wei
- State Key Laboratory of Coordination Chemistry Collaborative Innovation Center of Advanced Microstructures School of Chemistry and Chemical Engineering, Nanjing University Nanjing 210023 China
| | - Kim R. Dunbar
- Department of Chemistry Texas A & M University College Station TX 77840 USA
| | - Xin‐Yi Wang
- State Key Laboratory of Coordination Chemistry Collaborative Innovation Center of Advanced Microstructures School of Chemistry and Chemical Engineering, Nanjing University Nanjing 210023 China
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Gao X, Li L, Sun W, Chen P. Crystallization and single molecule magnetic behavior of quadruple-stranded helicates: tuning the anisotropic axes. Dalton Trans 2020; 49:2843-2849. [PMID: 32067008 DOI: 10.1039/c9dt04483c] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
It has been successfully proven that the bis-β-diketone ligands with proper lengths and flexibility are essential for the construction of multiple-stranded helicates, where two Dy3+ centers in subtly different environments allow the tuning of the anisotropic axes. Based on our previous work, we have designed a flexible bis-β-diketone ligand BTT (BTT = 3,3''-bis(4,4,4-trifluoro-1,3-dioxobutyl)-m-terphenyl), which is successfully utilized to construct quadruple-stranded helicates with the formula of [C6H16N]2[Ln2(BTT)4]·2CH2Cl2·4CH3OH [Ln = Ce (1), Dy (2)]. Structural analysis indicates that they crystallize in the tetragonal space group P4/n, and each Ln3+ center is chelated by four diketonate moieties from four ligands, giving rise to a dinuclear quadruple-stranded helicate. Magnetic measurements show that 2 displays single molecular magnet behavior under an applied DC field of 2000 Oe. Further investigations indicate that the anisotropic axes of the Dy3+ centers can be tuned depending on the bis-β-diketonate ligands used to assemble the Dy helicates.
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Affiliation(s)
- Xingrui Gao
- Key Laboratory of Functional Inorganic Material Chemistry (MOE), School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, PR China.
| | - Li Li
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, PR China
| | - Wenbin Sun
- Key Laboratory of Functional Inorganic Material Chemistry (MOE), School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, PR China.
| | - Peng Chen
- Key Laboratory of Functional Inorganic Material Chemistry (MOE), School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, PR China.
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