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Hosseinmardi S, Scheurer A, Heinemann FW, Kuepper K, Senft L, Waldschmidt P, Ivanović‐Burmazović I, Meyer K. Evaluation of Manganese Cubanoid Clusters for Water Oxidation Catalysis: From Well-Defined Molecular Coordination Complexes to Catalytically Active Amorphous Films. CHEMSUSCHEM 2021; 14:4741-4751. [PMID: 34409745 PMCID: PMC8596818 DOI: 10.1002/cssc.202101451] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Revised: 08/17/2021] [Indexed: 06/05/2023]
Abstract
With a view to developing multimetallic molecular catalysts that mimic the oxygen-evolving catalyst (OEC) in Nature's photosystem II, the synthesis of various dicubanoid manganese clusters is described and their catalytic activity investigated for water oxidation in basic, aqueous solution. Pyridinemethanol-based ligands are known to support polynuclear and cubanoid structures in manganese coordination chemistry. The chelators 2,6-pyridinedimethanol (H2 L1 ) and 6-methyl-2-pyridinemethanol (HL2 ) were chosen to yield polynuclear manganese complexes; namely, the tetranuclear defective dicubanes [MnII 2 MnIII 2 (HL1 )4 (OAc)4 (OMe)2 ] and [MnII 2 MnIII 2 (HL1 )6 (OAc)2 ] (OAc)2 ⋅2 H2 O, as well as the octanuclear-dicubanoid [MnII 6 MnIII 2 (L2 )4 (O)2 (OAc)10 (HOMe/OH2 )2 ]⋅3MeOH⋅MeCN. In freshly prepared solutions, polynuclear species were detected by electrospray ionization mass spectrometry, whereas X-band electron paramagnetic resonance studies in dilute, liquid solution suggested the presence of divalent mononuclear Mn species with g values of 2. However, the magnetochemical investigation of the complexes' solutions by the Evans technique confirmed a haphazard combination of manganese coordination complexes, from mononuclear to polynuclear species. Subsequently, the newly synthesized and characterized manganese molecular complexes were employed as precursors to prepare electrode-deposited films in a buffer-free solution to evaluate and compare their stability and catalytic activity for water oxidation electrocatalysis.
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Affiliation(s)
- Soosan Hosseinmardi
- Department of Chemistry and PharmacyInorganic ChemistryFriedrich-Alexander-Universität Erlangen-Nürnberg (FAU)Egerlandstraße 191058ErlangenGermany
| | - Andreas Scheurer
- Department of Chemistry and PharmacyInorganic ChemistryFriedrich-Alexander-Universität Erlangen-Nürnberg (FAU)Egerlandstraße 191058ErlangenGermany
| | - Frank W. Heinemann
- Department of Chemistry and PharmacyInorganic ChemistryFriedrich-Alexander-Universität Erlangen-Nürnberg (FAU)Egerlandstraße 191058ErlangenGermany
| | - Karsten Kuepper
- Department of PhysicsUniversity of OsnabrückBarbarastraße 749069OsnabrückGermany
| | - Laura Senft
- Department of Chemistry and PharmacyInorganic ChemistryFriedrich-Alexander-Universität Erlangen-Nürnberg (FAU)Egerlandstraße 191058ErlangenGermany
- Present address: Department of ChemistryLudwig-Maximilians-Universität MünchenButenandtstraße 5–1381377MunichGermany
| | - Pablo Waldschmidt
- Department of Chemistry and PharmacyInorganic ChemistryFriedrich-Alexander-Universität Erlangen-Nürnberg (FAU)Egerlandstraße 191058ErlangenGermany
| | - Ivana Ivanović‐Burmazović
- Department of Chemistry and PharmacyInorganic ChemistryFriedrich-Alexander-Universität Erlangen-Nürnberg (FAU)Egerlandstraße 191058ErlangenGermany
- Present address: Department of ChemistryLudwig-Maximilians-Universität MünchenButenandtstraße 5–1381377MunichGermany
| | - Karsten Meyer
- Department of Chemistry and PharmacyInorganic ChemistryFriedrich-Alexander-Universität Erlangen-Nürnberg (FAU)Egerlandstraße 191058ErlangenGermany
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Wang HS, Zhang K, Song Y, Pan ZQ. Recent advances in 3d-4f magnetic complexes with several types of non-carboxylate organic ligands. Inorganica Chim Acta 2021. [DOI: 10.1016/j.ica.2021.120318] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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3
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Wu TX, Tao Y, He QJ, Li HY, Bian HD, Huang FP. Constructing an unprecedented {Mn II38} matryoshka doll with a [Mn 18(CO 3) 9] inorganic core and magnetocaloric effect. Chem Commun (Camb) 2021; 57:2732-2735. [PMID: 33629088 DOI: 10.1039/d0cc07884k] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
An unprecedented inner [Mn18(CO3)9] inorganic core and [Mn20] metal-organic periphery compose a high-nuclearity homometallic single-valent {MnII38} molecular aggregate with a [Mn6] ⊂ [Mn12] ⊂ [Mn8] ⊂ [Mn12] matryoshka doll-like skeleton that displays a significant magnetocaloric effect (MCE).
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Affiliation(s)
- Tai-Xue Wu
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmacy, Guangxi Normal University, Guilin 541004, P. R. China.
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Smart Ligands for Efficient 3d-, 4d- and 5d-Metal Single-Molecule Magnets and Single-Ion Magnets. INORGANICS 2020. [DOI: 10.3390/inorganics8060039] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
There has been a renaissance in the interdisciplinary field of Molecular Magnetism since ~2000, due to the discovery of the impressive properties and potential applications of d- and f-metal Single-Molecule Magnets (SMMs) and Single-Ion Magnets (SIMs) or Monometallic Single-Molecule Magnets. One of the consequences of this discovery has been an explosive growth in synthetic molecular inorganic and organometallic chemistry. In SMM and SIM chemistry, inorganic and organic ligands play a decisive role, sometimes equally important to that of the magnetic metal ion(s). In SMM chemistry, bridging ligands that propagate strong ferromagnetic exchange interactions between the metal ions resulting in large spin ground states, well isolated from excited states, are preferable; however, antiferromagnetic coupling can also lead to SMM behavior. In SIM chemistry, ligands that create a strong axial crystal field are highly desirable for metal ions with oblate electron density, e.g., TbIII and DyIII, whereas equatorial crystal fields lead to SMM behavior in complexes based on metal ions with prolate electron density, e.g., ErIII. In this review, we have attempted to highlight the use of few, efficient ligands in the chemistry of transition-metal SMMs and SIMs, through selected examples. The content of the review is purely chemical and it is assumed that the reader has a good knowledge of synthetic, structural and physical inorganic chemistry, as well as of the properties of SIMs and SMMs and the techniques of their study. The ligands that will be discussed are the azide ion, the cyanido group, the tris(trimethylsilyl)methanide, the cyclopentanienido group, soft (based on the Hard-Soft Acid-Base model) ligands, metallacrowns combined with click chemistry, deprotonated aliphatic diols, and the family of 2-pyridyl ketoximes, including some of its elaborate derivatives. The rationale behind the selection of the ligands will be emphasized.
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Razali MR, Batten SR. Metal selectivity for in-situ dehydrogenative cross-coupling of 2-hydroxymethylpyridine with small cyano anion. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2019.126928] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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6
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Wang HS, Long QQ, Hu ZB, Yue L, Yang FJ, Yin CL, Pan ZQ, Zhang YQ, Song Y. Synthesis, crystal structures and magnetic properties of a series of chair-like heterometallic [Fe 4Ln 2] (Ln = Gd III, Dy III, Ho III, and Er III) complexes with mixed organic ligands. Dalton Trans 2019; 48:13472-13482. [PMID: 31454007 DOI: 10.1039/c9dt02638j] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Four chair-like hexanuclear Fe-Ln complexes containing mixed organic ligands, namely, [Fe4Ln2{(py)2CO2}4(pdm)2(NO3)2(H2O)2Cl4]·xCH3CN·yH2O (Ln = GdIII (1, x = 1, y = 0), DyIII (2, x = 1, y = 1), HoIII (3, x = 0, y = 2), and ErIII (4, x = 1, y = 3); (py)2CO2H2 = the gem-diol form of di-2-pyridyl ketone and pdmH2 = 2,6-pyridinedimethanol) have been obtained by employing di-2-pyridyl ketone and 2,6-pyridinedimethanol reacting with FeCl3 and Ln(NO3)3 in MeCN. The structures of 1-4 are similar to each other except for the number of lattice solvent molecules. Four FeIII and two LnIII in these complexes comprise a chair-like core with the "body" constructed by four FeIII ions and the "end" constructed by two LnIII ions. Among the four compounds, 2 shows field-induced single molecule magnet behavior as revealed by ac magnetic susceptibility studies, with the effective energy barrier and the pre-exponential factor of 22.07 K and 8.44 × 10-7 s, respectively. Ab initio calculations indicated that, among 2_Dy, 3_Ho and 4_Er fragments, the energy gap between the lowest two spin-orbit states for 2_Dy is the largest, while the tunneling gap for 2 is the smallest. These might be the reasons for complex 2 exhibiting SMM behavior. Additionally, the orientations of the magnetic anisotropy of DyIII in 2 were obtained by electrostatic calculations and ab initio calculations, both indicating that the directions of the main magnetic axis of Dy1 ions are almost aligned along Dy1-O5 (O5 from the pdm2- ligand).
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Affiliation(s)
- Hui-Sheng Wang
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Key Laboratory for Green Chemical Process of Ministry of Education, Wuhan 430074, P. R. China.
| | - Qiao-Qiao Long
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Key Laboratory for Green Chemical Process of Ministry of Education, Wuhan 430074, P. R. China.
| | - Zhao-Bo Hu
- State Key Laboratory of Coordinate Chemistry, Nanjing National Laboratory of Microstructures, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P. R. China.
| | - Lin Yue
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Key Laboratory for Green Chemical Process of Ministry of Education, Wuhan 430074, P. R. China.
| | - Feng-Jun Yang
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Key Laboratory for Green Chemical Process of Ministry of Education, Wuhan 430074, P. R. China.
| | - Cheng-Ling Yin
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Key Laboratory for Green Chemical Process of Ministry of Education, Wuhan 430074, P. R. China.
| | - Zhi-Quan Pan
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Key Laboratory for Green Chemical Process of Ministry of Education, Wuhan 430074, P. R. China.
| | - Yi-Quan Zhang
- Jiangsu Key Laboratory for NSLSCS, School of Physical Science and Technology, Nanjing Normal University, Nanjing 210023, China.
| | - You Song
- State Key Laboratory of Coordinate Chemistry, Nanjing National Laboratory of Microstructures, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P. R. China.
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Pham AT, Abbasi P, Monache GD, Mazarakioti EC, Rawson JM, Stamatatos TC, Pilkington M. Magneto-structural studies of two M–O–M bridged homochiral mixed valence Co(II)/Co(III) complexes. Polyhedron 2019. [DOI: 10.1016/j.poly.2019.05.026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Stetsiuk O, Synytsia V, Petrusenko SR, Kokozay VN, El-Ghayoury A, Cano J, Lloret F, Julve M, Fleury B, Avarvari N. Co-existence of ferro- and antiferromagnetic interactions in a hexanuclear mixed-valence CoMnMn cluster sustained by a multidentate Schiff base ligand. Dalton Trans 2019; 48:11862-11871. [PMID: 31305843 DOI: 10.1039/c9dt02503k] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
The successful utilization of the "direct synthesis" approach yielded the unprecedented hexanuclear complex of formula [Co2MnMn(L1)4Cl2(μ3-O)2(dmf)4]·2dmf (1) (H3L is the Schiff base derived from the condensation of salicylaldehyde and 3-aminopropane-1,2-diol). Single crystal X-ray analysis revealed that 1 crystallizes in the monoclinic system P21/c and it contains a rare mixed-valence {CoMnMn(μ2-O)8(μ3-O)2} core where all metal ions are linked through the phenolato and alkoxo groups of the L3- ligand. Besides the charge balance resulting from the X-ray structure, the oxidation state of the metal ions has been confirmed by XPS spectroscopy. Cryomagnetic studies indicate the coexistence of ferro- (MnIV-MnII, J2 = +1.10(3) cm-1, J3 = +2.19(3) cm-1; MnII-MnII, j = +0.283(3) cm-1) and antiferromagnetic interactions (MnIV-MnIV, J1 = -17.31(4) cm-1), with the six-coordinate CoIII ions being diamagnetic. DFT type calculations were carried out to substantiate these values. The energy diagram for the different spin states using the best-fit parameters shows the occurrence of six low-lying spin states (S = 0-5) which are close in energy but clearly separated from the remaining ones, with the ground spin state being S = 5. Complex 1 is found to be the first example where weak ferromagnetic exchange between MnII ions through the long -O-MnIV-O- pathway takes place.
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Affiliation(s)
- Oleh Stetsiuk
- MOLTECH-Anjou, UMR 6200, CNRS, UNIV Angers, 2 bd Lavoisier, 49045 ANGERS Cedex, France. and Department of Inorganic Chemistry, Taras Shevchenko National University of Kyiv, Volodymyrska str. 64/13, Kyiv 01601, Ukraine
| | - Valentyn Synytsia
- Department of Inorganic Chemistry, Taras Shevchenko National University of Kyiv, Volodymyrska str. 64/13, Kyiv 01601, Ukraine
| | - Svitlana R Petrusenko
- Department of Inorganic Chemistry, Taras Shevchenko National University of Kyiv, Volodymyrska str. 64/13, Kyiv 01601, Ukraine
| | - Vladimir N Kokozay
- Department of Inorganic Chemistry, Taras Shevchenko National University of Kyiv, Volodymyrska str. 64/13, Kyiv 01601, Ukraine
| | - Abdelkrim El-Ghayoury
- MOLTECH-Anjou, UMR 6200, CNRS, UNIV Angers, 2 bd Lavoisier, 49045 ANGERS Cedex, France.
| | - Joan Cano
- Instituto de Ciencia Molecular (ICMol)/Departament de Química Inorgànica, Universitat de València, C/Catedrático José Beltrán 2, 46980 Paterna, Valencia, Spain.
| | - Francesc Lloret
- Instituto de Ciencia Molecular (ICMol)/Departament de Química Inorgànica, Universitat de València, C/Catedrático José Beltrán 2, 46980 Paterna, Valencia, Spain.
| | - Miguel Julve
- Instituto de Ciencia Molecular (ICMol)/Departament de Química Inorgànica, Universitat de València, C/Catedrático José Beltrán 2, 46980 Paterna, Valencia, Spain.
| | - Benoit Fleury
- Sorbonne Université, CNRS. Institut Parisien de Chimie Moléculaire, UMR 8232, F-75005 Paris, France
| | - Narcis Avarvari
- MOLTECH-Anjou, UMR 6200, CNRS, UNIV Angers, 2 bd Lavoisier, 49045 ANGERS Cedex, France.
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Sánchez RH, Betley TA. Thermally Persistent High-Spin Ground States in Octahedral Iron Clusters. J Am Chem Soc 2018; 140:16792-16806. [PMID: 30403845 DOI: 10.1021/jacs.8b10181] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Chemical oxidation and reduction of the all-ferrous (HL)2Fe6 in THF affords isostructural, coordinatively unsaturated clusters of the type [(HL)2Fe6] n: [(HL)2Fe6][BArF24] (1, n = +1; where [BArF24]- = tetrakis[(3,5-trifluoromethyl)phenyl]borate), [Bu4N][(HL)2Fe6] (2a, n = -1), [P][(HL)2Fe6] (2b, n = -1; where [P]+ = tributyl(1,3-dioxolan-2-ylmethyl)phosphonium), and [Bu4N]2[(HL)2Fe6] (3, n = -2). Each member of the redox-transfer series was characterized by zero-field 57Fe Mössbauer spectroscopy, near-infrared spectroscopy, single-crystal X-ray crystallography, and magnetometry. Redox-directed trends are observed when comparing the structural metrics within the [Fe6] core. The metal octahedron [Fe6] decreases marginally in volume as the molecular reduction state increases as gauged by the Fe-Feavg distance varying from 2.608(11) Å ( n = +1) to 2.573(3) ( n = -2). In contrast, the mean Fe-N distances and ∠Fe-N-Fe angles correlate linearly with the [Fe6] oxidation level, or alternatively, the changes observed within the local Fe-N4 coordination planes vary linearly with the aggregate spin ground state. In general, as the spin ground state ( S) increases, the Fe-N(H)avg distances also increase. The structural metric perturbations within the [Fe6] core and measured spin ground states were rationalized extending the previously proposed molecular orbital diagram derived for (HL)2Fe6. Chemical reduction of the (HL)2Fe6 cluster results in an abrupt increase in spin ground state from S = 6 for the all-ferrous cluster, to S = 19/2 in the monoanionic 2b and S = 11 for the dianionic 3. The observation of asymmetric intervalence charge transfer bands in 3 provides further evidence of the fully delocalized ground state observed by 57Fe Mössbauer spectroscopy for all species examined (1-3). For each of the clusters examined within the electron-transfer series, the observed spin ground states thermally persist to 300 K. In particular, the S = 11 in dianionic 3 and S = 19/2 in the monoanionic 2b represent the highest spin ground states isolated up to room temperature known to date. The increase in spin ground state results from population of the antibonding orbital band comprised of the Fe-N σ* interactions. As such, the thermally persistent ground states arise from population of the resultant single spin manifolds in accordance with Hund's rules. The large spin ground states, indicative of strong ferromagnetic electronic alignment of the valence electrons, result from strong direct exchange electronic coupling mediated by Fe-Fe orbital overlap within the [Fe6] cores, equivalent to a strong double exchange magnetic coupling B for 3 that was calculated to be 309 cm-1.
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Affiliation(s)
- Raúl Hernández Sánchez
- Department of Chemistry and Chemical Biology , Harvard University , 12 Oxford Street , Cambridge , Massachusetts 02138 , United States
| | - Theodore A Betley
- Department of Chemistry and Chemical Biology , Harvard University , 12 Oxford Street , Cambridge , Massachusetts 02138 , United States
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Homometallic {Mn10} and heterometallic {Mn6Ca4} supertetrahedra exhibiting an unprecedented {MnIII9MnII} oxidation state level and heterometal ions distribution. Polyhedron 2018. [DOI: 10.1016/j.poly.2018.05.029] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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11
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Bai J, Yang C, Li G, Bi Y, Li X, Tang J, Han T, Zheng YZ, Wu G, Qiu S. “Merged-chelating” approach for constructing high-spin Mn aggregate: A [MnIII2] dimer and a 2-D honeycomb network based on star-shaped [MnIIMnIII3] tetramer. Polyhedron 2018. [DOI: 10.1016/j.poly.2018.03.022] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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12
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Vaidya S, Shukla P, Tripathi S, Rivière E, Mallah T, Rajaraman G, Shanmugam M. Substituted versus Naked Thiourea Ligand Containing Pseudotetrahedral Cobalt(II) Complexes: A Comparative Study on Its Magnetization Relaxation Dynamics Phenomenon. Inorg Chem 2018; 57:3371-3386. [DOI: 10.1021/acs.inorgchem.8b00160] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Shefali Vaidya
- Department of Chemistry, Indian Institute of Technology (IIT) Bombay, Powai, Mumbai, 400076 Maharashtra, India
| | - Pragya Shukla
- Department of Chemistry, Indian Institute of Technology (IIT) Bombay, Powai, Mumbai, 400076 Maharashtra, India
| | - Shalini Tripathi
- Department of Chemistry, Indian Institute of Technology (IIT) Bombay, Powai, Mumbai, 400076 Maharashtra, India
| | - Eric Rivière
- Institut de Chimie Moléculaire et des Matériaux d’Orsay, CNRS, Université Paris Sud and Université Paris Saclay, Orsay, Cedex 91405, France
| | - Talal Mallah
- Institut de Chimie Moléculaire et des Matériaux d’Orsay, CNRS, Université Paris Sud and Université Paris Saclay, Orsay, Cedex 91405, France
| | - Gopalan Rajaraman
- Department of Chemistry, Indian Institute of Technology (IIT) Bombay, Powai, Mumbai, 400076 Maharashtra, India
| | - Maheswaran Shanmugam
- Department of Chemistry, Indian Institute of Technology (IIT) Bombay, Powai, Mumbai, 400076 Maharashtra, India
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Hexanuclear and Tetranuclear Mn/Ln clusters using 2-(hydroxymethyl)pyridine: Synthesis, structures and magnetic properties. Appl Organomet Chem 2017. [DOI: 10.1002/aoc.3846] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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14
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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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15
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Adebayo OA, Abboud KA, Christou G. New mixed-valence MnII4MnIV clusters from an unusual ligand transformation. Polyhedron 2017. [DOI: 10.1016/j.poly.2016.10.018] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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16
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Masternak J, Zienkiewicz-Machnik M, Kowalik M, Jabłońska-Wawrzycka A, Rogala P, Adach A, Barszcz B. Recent advances in coordination chemistry of metal complexes based on nitrogen heteroaromatic alcohols. Synthesis, structures and potential applications. Coord Chem Rev 2016. [DOI: 10.1016/j.ccr.2016.01.007] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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17
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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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Sun L, Chen H, Ma C, Chen C. A new topology of hexanuclear [MnIII4LnIII2] clusters: syntheses, structures, and magnetic properties. RSC Adv 2016. [DOI: 10.1039/c5ra25526k] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A new topology of hexanulcear Mn/Ln clusters with the 2-(hydroxymethyl)pyridine as ligand have been synthesized. The soild-state dc magnetic susceptibility analyses exhibit antiferromagnetic interactions within two compounds.
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Affiliation(s)
- Lei Sun
- State Key Laboratory of Structural Chemistry
- Fujian Institute of Research on the Structure of Matter
- The Chinese Academy of Sciences
- Fuzhou
- China
| | - Hui Chen
- State Key Laboratory of Structural Chemistry
- Fujian Institute of Research on the Structure of Matter
- The Chinese Academy of Sciences
- Fuzhou
- China
| | - Chengbing Ma
- State Key Laboratory of Structural Chemistry
- Fujian Institute of Research on the Structure of Matter
- The Chinese Academy of Sciences
- Fuzhou
- China
| | - Changneng Chen
- State Key Laboratory of Structural Chemistry
- Fujian Institute of Research on the Structure of Matter
- The Chinese Academy of Sciences
- Fuzhou
- China
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Sun L, Chen H, Ma C, Chen C. Dodenuclear [Mn(III)(8)Ln(III)(4)] clusters with 2-(hydroxymethyl)pyridine: syntheses, structures, and magnetic properties. Dalton Trans 2015; 44:20964-71. [PMID: 26581752 DOI: 10.1039/c5dt03130c] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new family of isostructural Mn/Ln dodenuclear clusters: [Mn8Ln4(O)8(hmp)4(O2CPh)12(NO3)4(PhCO2H)(C2H5OH)] [Ln = La (1), Pr (2), Nd (3), Gd (4), Dy(5), hmpH = 2-(hydroxymethyl)pyridine] have been synthesized by the reaction of Mn(NO3)2 and Ln(NO3)3·6H2O with hmpH and benzoic acid as co-ligands. Compounds 1-5 possess a spindle-shaped core of [MnLn(μ4-O)4(μ3-O)4(μ3-OR)2(μ2-OR)8](10+), which is composed of six face-sharing defected cubane units and two square-pyramidal units. The compounds represent the highest nuclearity Mn/Ln clusters with the use of hmpH to date. That the ferromagnetic interactions dominated within complexes 1-4 were suggested by solid-state dc magnetic susceptibility analyses. Compound 4 displays a magnetic-caloric effect (MCE) with 13.94 J kg(-1) K(-1) as the entropy change at 6 K for ΔH = 8 T. Compounds 1 and 5 exhibit an out-of-phase χ''M peak maximum above 2.0 K. Fitting of the ac susceptibility data to an Arrhenius law gives an energy barrier Ueff = 6.88/7.44 K for compounds 1 and 5 respectively.
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Affiliation(s)
- Lei Sun
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, The Chinese Academy of Sciences, Fuzhou, Fujian 350002, China.
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20
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Abstract
The field of single molecule magnetism remains predicated on super- and double exchange mechanisms to engender large spin ground states. An alternative approach to achieving high-spin architectures involves synthesizing weak-field clusters featuring close M-M interactions to produce a single valence orbital manifold. Population of this orbital manifold in accordance with Hund's rules could potentially yield thermally persistent high-spin ground states under which the valence electrons remain coupled. We now demonstrate this effect with a reduced hexanuclear iron cluster that achieves an S = 19/2 (χ(M)T ≈ 53 cm(3) K/mol) ground state that persists to 300 K, representing the largest spin ground state persistent to room temperature reported to date. The reduced cluster displays single molecule magnet behavior manifest in both variable-temperature zero-field (57)Fe Mössbauer and magnetometry with a spin reversal barrier of 42.5(8) cm(-1) and a magnetic blocking temperature of 2.9 K (0.059 K/min).
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Affiliation(s)
- Rauĺ Hernández Sánchez
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138, United States
| | - Theodore A. Betley
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138, United States
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21
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Dermitzaki D, Raptopoulou CP, Psycharis V, Escuer A, Perlepes SP, Stamatatos TC. Nonemployed Simple Carboxylate Ions in Well-Investigated Areas of Heterometallic Carboxylate Cluster Chemistry: A New Family of {CuII4LnIII8} Complexes Bearing tert-Butylacetate Bridging Ligands. Inorg Chem 2015. [DOI: 10.1021/acs.inorgchem.5b01179] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | - Catherine P. Raptopoulou
- Institute of Nanoscience and Nanotechnology, NCSR “Demokritos”, 15310 Aghia Paraskevi, Attikis, Greece
| | - Vassilis Psycharis
- Institute of Nanoscience and Nanotechnology, NCSR “Demokritos”, 15310 Aghia Paraskevi, Attikis, Greece
| | - Albert Escuer
- Departament
de Quimica Inorganica, Universitat de Barcelona, Diagonal 645, 08028 Barcelona, Spain
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22
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Schax F, Limberg C. Reactivity of an Octanuclear Copper(I) Siloxide Compound - Isolation of a Copper(II) Oxo Compound with a Supertetrahedral Core. Z Anorg Allg Chem 2015. [DOI: 10.1002/zaac.201500228] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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23
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Armaghan M, Shang XJ, Yuan YQ, Young DJ, Zhang WH, Hor TSA, Lang JP. Metal-Organic Frameworks via Emissive Metal-Carboxylate Zwitterion Intermediates. Chempluschem 2015; 80:1231-1234. [PMID: 31973310 DOI: 10.1002/cplu.201500134] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2015] [Indexed: 11/05/2022]
Abstract
Pyridinemethanol-carboxylate esters form octahedral complexes with Zn(NO3 )2 in aqueous DMF that subsequently undergo hydrolysis at elevated temperatures to form metal-carboxylate zwitterions. In situ deprotonation of the hydroxy group leads to thermally robust, neutral MOFs. This stepwise synthesis can be controlled by temperature and is made possible by the subtle difference in reactivity of the functional groups.
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Affiliation(s)
- Mahsa Armaghan
- Institute of Materials Research and Engineering, Agency for Science, Technology and Research, 3 Research Link, Singapore 117602 (Singapore).,Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543 (Singapore)
| | - Xiu-Juan Shang
- College of Chemistry, Chemical Engineering and Materials Science Soochow University, Suzhou 215123 (P. R. China)
| | - Yan-Qiu Yuan
- College of Chemistry, Chemical Engineering and Materials Science Soochow University, Suzhou 215123 (P. R. China)
| | - David J Young
- Institute of Materials Research and Engineering, Agency for Science, Technology and Research, 3 Research Link, Singapore 117602 (Singapore).,School of Science, Monash University, 47500 Bandar Sunway, Selangor D.E. (Malaysia)
| | - Wen-Hua Zhang
- Institute of Materials Research and Engineering, Agency for Science, Technology and Research, 3 Research Link, Singapore 117602 (Singapore).,College of Chemistry, Chemical Engineering and Materials Science Soochow University, Suzhou 215123 (P. R. China)
| | - T S Andy Hor
- Institute of Materials Research and Engineering, Agency for Science, Technology and Research, 3 Research Link, Singapore 117602 (Singapore).,Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543 (Singapore)
| | - Jian-Ping Lang
- College of Chemistry, Chemical Engineering and Materials Science Soochow University, Suzhou 215123 (P. R. China)
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24
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Dutta A, Biswas S, Escuer A, Dolai M, Ghosh S, Ali M. Synthesis, Crystal Structures, and Magnetic and Catalytic Studies on a Linear Trinuclear MnII3Complex. Chempluschem 2015; 80:1440-1447. [DOI: 10.1002/cplu.201500090] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2015] [Indexed: 11/09/2022]
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25
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A novel 2-D coordination polymer with mixed azido and alkoxido bridges: Synthesis, structure and magnetic properties. Polyhedron 2015. [DOI: 10.1016/j.poly.2015.03.019] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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26
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Armaghan M, Lu WYJ, Wu D, Wei Y, Yuan FL, Ng SW, Amini MM, Zhang WH, Young DJ, Hor TSA, Lang JP. Isolation of first row transition metal-carboxylate zwitterions. RSC Adv 2015. [DOI: 10.1039/c5ra05564d] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
First-row transition metal ions form zwitterions with 2-hydroxymethylpyridine-carboxylate ligands.
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27
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The bridging azido ligand as a central “player” in high-nuclearity 3d-metal cluster chemistry. Coord Chem Rev 2014. [DOI: 10.1016/j.ccr.2014.04.001] [Citation(s) in RCA: 143] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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28
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Utko J, Canaj AB, Milios CJ, Sobocińska M, Lis T. New members in the [Mn10] supertetrahedron family. INORG CHEM COMMUN 2014. [DOI: 10.1016/j.inoche.2014.03.040] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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29
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Tuning nuclearity of clusters by positional change of functional group: Synthesis of polynuclear clusters, crystal structures and magnetic properties. Inorganica Chim Acta 2014. [DOI: 10.1016/j.ica.2014.02.017] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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30
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Massard A, Rogez G, Braunstein P. Synthesis and characterization of a new nonanuclear Ni(II) cluster from a pyridyl-alcohol ligand. Dalton Trans 2014; 43:42-6. [PMID: 24196794 DOI: 10.1039/c3dt52744a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
The reaction of one equivalent of 2-methyl-1-(pyridin-2-yl)propan-2-ol (HL) with two equivalents of [Ni(OAc)2·4H2O] in methanol afforded the nonanuclear coordination cluster [Ni9(HL-κ(2)N,O)4(OAc-κ(2)O)2(μ2-OAc-κ(1)O)2(μ2-OAc-κ(2)O,O')4(μ3-OAc-κ(2)O;κ(2)O,O')2(μ3-OMe)8] (1). All nickel ions are hexacoordinated and show a slightly distorted octahedral coordination geometry. This unusual centrosymmetric coordination cluster can be described as constituted by two cubane moieties connected by a linker comprising a nickel atom, situated on the inversion centre, four bridging acetates and two triply-bridging acetates. Each cubane contains four Ni(II) centres and four triply-bridging methoxide anions, two of the Ni(II) centres are N,O-chelated by the ligand HL, another Ni(II) is chelated by an acetate ligand and the fourth Ni(II) centre is connected to the exo-cubane Ni(II) through three acetate ligands which each have a different bonding mode: μ2-κ(2)O,O', μ2-κ(1)O, and μ3-κ(1)O;κ(2)O,O'. The magnetic and catalytic properties for ethylene oligomerization of the unusual complex have been investigated.
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Affiliation(s)
- Alexandre Massard
- Laboratoire de Chimie de Coordination, UMR 7177 CNRS/Université de Strasbourg, Institut Le Bel, 4, Rue Blaise Pascal, CS90032, 67081 Strasbourg Cedex, France.
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31
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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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Yang P, Shao C, Zhu L, Xu Y. Syntheses, Crystal Structures, and Magnetic Properties of a Family of Tetra‐ and Octanuclear Mixed‐Valent Manganese Clusters. Eur J Inorg Chem 2013. [DOI: 10.1002/ejic.201300582] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Pei‐Pei Yang
- College of Chemistry and Materials Science, Huaibei Normal University, 100 Dongshan Road, Huaibei 235000, China, http://www.chnu.edu.cn/Site/hxx/html/
| | - Cong‐Ying Shao
- College of Chemistry and Materials Science, Huaibei Normal University, 100 Dongshan Road, Huaibei 235000, China, http://www.chnu.edu.cn/Site/hxx/html/
| | - Li‐Li Zhu
- College of Chemistry and Materials Science, Huaibei Normal University, 100 Dongshan Road, Huaibei 235000, China, http://www.chnu.edu.cn/Site/hxx/html/
| | - Yun Xu
- College of Chemistry and Materials Science, Huaibei Normal University, 100 Dongshan Road, Huaibei 235000, China, http://www.chnu.edu.cn/Site/hxx/html/
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33
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Wang HS, Song Y. Conversion of tetranuclear Ni complexes from a defect dicubane core to a [Ni4O4] cubane-like core via addition of 2-hydroxymethylpyridine: Synthesis, crystal structures, and magnetic properties. INORG CHEM COMMUN 2013. [DOI: 10.1016/j.inoche.2013.05.016] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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34
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Yang PP, Zhu LL, Xu Y, Shao CY. Synthesis, Crystal Structures, and Magnetic Properties of Two Tetrahedral MnIIMnIII3Complexes. Z Anorg Allg Chem 2013. [DOI: 10.1002/zaac.201300149] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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35
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Papatriantafyllopoulou C, Abboud KA, Christou G. Mn/Ce clusters from the use of pivalate and chelate ligands: MnIII8CeIV, MnIII2CeIV2, and MnIII4CeIII2 products. Polyhedron 2013. [DOI: 10.1016/j.poly.2012.09.052] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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36
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Hexanuclear zinc(II) carboxylate complexes from the use of pyridine-2,6-dimethanol: Synthetic, structural and photoluminescence studies. Polyhedron 2013. [DOI: 10.1016/j.poly.2012.08.049] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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37
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Liu J, Ma C, Chen H, Hu M, Wen H, Cui H, Song X, Chen C. Syntheses, structures and magnetic properties of a family of heterometallic [Mn(II)2Mn(III)2Ln(III)2] clusters. Dalton Trans 2013. [PMID: 23208662 DOI: 10.1039/c2dt32269b] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new family of isostructural Mn-Ln heterometallic clusters, [Mn(II)(2)Mn(III)(2)Ln(III)(2)(Piv)(8)(thme)(2)(H(2)tea)(2)] (H(3)thme = 1,1,1-tris(hydroxymethyl)ethane, Hpiv = pivalic acid, H(3)tea = triethanolamine, and Ln = Pr, Nd, Sm, Eu, Gd, Tb, and Dy) have been prepared by reaction of the hexanuclear manganese precursor, [Mn(6)O(2)(Piv)(10)(4-Me-Py)(2.5)(Hpiv)(1.5)], with H(3)thme, H(3)tea, and Ln(NO(3))(3)·6H(2)O under the solvothermal conditions. Complexes 1Pr-7Dy were characterized by single-crystal X-ray diffraction and their core [Mn(2)(III)Mn(2)(II)Ln(2)(III)(μ(3)-OR)(4)(μ(2)-OR)(6)](6+) composed of four face-sharing defected cubane units. Antiferromagnetic (AF) exchange interactions were suggested for all of the complexes by solid-state dc magnetic susceptibility measurements. Complexes 6Tb and 7Dy, show frequency-dependent ac susceptibility signals suggestive of slow magnetic relaxation.
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Affiliation(s)
- Jinying Liu
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, The Chinese Academy of Sciences, Fuzhou, Fujian 350002, China
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Cano J, Mautner FA, Berger C, Fischer RC, Vicente R. A new tetranuclear defective dicubane azide-bridged cobalt(II) complex. Polyhedron 2013. [DOI: 10.1016/j.poly.2012.11.007] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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39
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Zhang X, Li B, Tang J, Tian J, Huang G, Zhang J. Tuning the interactions from antiferro- to ferro-magnetic by molecular tailoring and manipulating. Dalton Trans 2013; 42:3308-17. [DOI: 10.1039/c2dt32021e] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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40
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Ako AM, Lan Y, Mereacre V, Ruiz E, Aravena D, Anson CE, Powell AK. Spins on a curved surface: an FeIII14 ferracalixarene. Dalton Trans 2013; 42:9606-12. [DOI: 10.1039/c3dt50345c] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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41
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Razali MR, Chesman ASR, Chilton NF, Langley SK, Moubaraki B, Murray KS, Deacon GB, Batten SR. Structure and magnetism of a mixed-valence octanuclear manganese(ii/iii) cluster derived from carbamoylcyanonitrosomethanide (ccnm). Dalton Trans 2013; 42:1400-5. [DOI: 10.1039/c2dt32303f] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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42
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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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43
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Shao CY, Zhu LL, Yang PP. A New Mixed-Valence Tetranuclear Manganese [MnII2MnIII2] Cluster. Z Anorg Allg Chem 2012. [DOI: 10.1002/zaac.201200065] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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44
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Taylor SM, McIntosh RD, Rezé J, Dalgarno SJ, Brechin EK. Oxacalix[3]arene-supported supertetrahedron. Chem Commun (Camb) 2012; 48:9263-5. [DOI: 10.1039/c2cc34792j] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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45
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Xie YE, Tian CB, Zhang HB, Peng Y, Li XQ, Li ZH, Lin P, Du SW. A new 2D honeycomb-like cluster polymer built by a {Mn6Na3} cluster: Synthesis and magnetic property. INORG CHEM COMMUN 2012. [DOI: 10.1016/j.inoche.2011.10.023] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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46
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Stamatatos TC, Adam R, Raptopoulou CP, Psycharis V, Ballesteros R, Abarca B, Perlepes SP, Boudalis AK. The first member of a second generation family of ligands derived from metal-ion assisted reactivity of di-2,6-(2-pyridylcarbonyl)pyridine: Synthesis and characterization of a MnII/III4 rhombus. INORG CHEM COMMUN 2012. [DOI: 10.1016/j.inoche.2011.09.042] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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47
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Structure and magnetic properties of hexanuclear 3d–4f clusters with {MnIII2LnIII4} (Ln=Sm, Eu, Gd, Tb, Dy, Ho) core. INORG CHEM COMMUN 2011. [DOI: 10.1016/j.inoche.2011.08.007] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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48
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A novel tetranuclear MnII2MnIII2 cluster [Mn4(hmp)6(N3)4]: Synthesis, crystal structure and magnetic properties. INORG CHEM COMMUN 2011. [DOI: 10.1016/j.inoche.2011.05.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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49
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Papatriantafyllopoulou C, Abboud KA, Christou G. Carboxylate-free Mn(III)2Ln(III)2 (Ln = lanthanide) and Mn(III)2Y(III)2 complexes from the use of (2-hydroxymethyl)pyridine: analysis of spin frustration effects. Inorg Chem 2011; 50:8959-66. [PMID: 21859075 DOI: 10.1021/ic2011106] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The initial employment of 2-(hydroxymethyl)pyridine for the synthesis of Mn/Ln (Ln = lanthanide) and Mn/Y clusters, in the absence of an ancillary organic ligand, has afforded a family of tetranuclear [Mn(III)(2)M(III)(2)(OH)(2)(NO(3))(4)(hmp)(4)(H(2)O)(4)](NO(3))(2) (M = Dy, 1; Tb, 2; Gd, 3; Y; 4) anionic compounds. 1-4 possess a planar butterfly (or rhombus) core and are rare examples of carboxylate-free Mn/Ln and Mn/Y clusters. Variable-temperature dc and ac studies established that 1 and 2, which contain highly anisotropic Ln(III) atoms, exhibit slow relaxation of their magnetization vector. Fitting of the obtained magnetization (M) versus field (H) and temperature (T) data for 3 by matrix diagonalization and including only axial anisotropy (zero-field splitting, ZFS) showed the ground state to be S = 3. Complex 4 has an S = 0 ground state. Fitting of the magnetic susceptibility data collected in the 5-300 K range for 3 and 4 to the appropriate van Vleck equations revealed, as expected, extremely weak antiferromagnetic interactions between the paramagnetic ions; for 3, J(1) = -0.16(2) cm(-1) and J(2) = -0.12(1) cm(-1) for the Mn(III)···Mn(III) and Mn(III)···Gd(III) interactions, respectively. The S = 3 ground state of 3 has been rationalized on the basis of the spin frustration pattern in the molecule. For 4, J = -0.75(3) cm(-1) for the Mn(III)···Mn(III) interaction. Spin frustration effects in 3 have been quantitatively analyzed for all possible combinations of sign of J(1) and J(2).
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Stuiber S, Wu G, Nehrkorn J, Dreiser J, Lan Y, Novitchi G, Anson CE, Unruh T, Powell AK, Waldmann O. Inelastic Neutron Scattering on an Mn10 Supertetrahedron: Assessment of Exchange Coupling Constants, Ferromagnetic Spin Waves and an Analogy to the Hückel Method. Chemistry 2011; 17:9094-106. [DOI: 10.1002/chem.201100500] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2011] [Indexed: 11/09/2022]
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