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Savva M, Alexandropoulos DI, Pissas M, Perlepes SP, Papatriantafyllopoulou C, Sanakis Y, Tasiopoulos AJ. Heterometallic clusters based on an uncommon asymmetric "V-shaped" [Fe 3+(μ-OR)Ln 3+(μ-OR) 2Fe 3+] 6+ (Ln = Gd, Tb, Dy, Ho) structural core and the investigation of the slow relaxation of the magnetization behaviour of the [Fe 2Dy] analogue. Dalton Trans 2023; 52:6997-7008. [PMID: 36789752 DOI: 10.1039/d2dt03938a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
Abstract
The synthesis, crystal structures, Mössbauer spectra and variable temperature dc and ac magnetic susceptibility studies of a new family of trinuclear heterometallic Fe3+/Ln3+ complexes, [Fe2Ln(PhCO2)3((py)2CO2)((py)2C(OMe)O)2(NO3)Cl] (Ln = Gd (1/Gd), Tb (1/Tb), Dy (1/Dy), and Ho (1/Ho)), where (py)2CO22- and (py)2C(OMe)O- are the anions of the gem-diol and hemiketal derivatives of di-2-pyridyl ketone, are reported. Compounds 1/Ln are based on an asymmetric "V-shaped" [Fe3+(μ-OR)Ln(μ-OR)2Fe3+]6+ structural core formed from the connection of the two terminal Fe3+ centers to the central Ln3+ ion either through one or two alkoxide groups originating from the alkoxide-type bridging ligands. Direct current magnetic susceptibility studies reveal the presence of weak antiferromagnetic interactions between the Fe3+ ions. Alternating current magnetic studies indicate the presence of a slow-magnetic relaxation process in 1/Dy with an energy barrier Ueff = 6.7 (±0.3) K and a pre-exponential factor, τ0 = 2.2 (±0.4) × 10-7 s. The electronic, magnetic and relaxation properties of the complexes were further monitored by variable temperature 57Fe Mössbauer spectroscopy. At T > 80 K the spectra from the complexes comprise two quadrupole doublets the hyperfine parameters of which reflect the distinct coordination environment of the two Fe3+ terminal sites. At T < 20 K, the Mössbauer spectra for 1/Dy are affected by magnetic relaxation effects. At 1.5 K, the spectrum of 1/Dy comprises well defined magnetic sextets indicating relaxation times slower than the characteristic time of the Mössbauer technique (10-7 s) in agreement with the dynamic magnetic measurements. 1/Gd exhibits broad unresolved magnetic sextets at 1.5 K indicating that the spin relaxation time is of the order of the Mössbauer characteristic time at this temperature. For 1/Tb, 1/Ho the Mössbauer spectra exhibit slight broadening even at the lowest available temperature consistent with magnetic relaxation times less than 10-7 s.
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Affiliation(s)
- Maria Savva
- Department of Chemistry, University of Cyprus, 1678 Nicosia, Cyprus.
| | | | - Michael Pissas
- Institute of Nanoscience and Nanotechnology, NCSR "Demokritos", 15341 Aghia Paraskevi, Athens, Greece.
| | | | | | - Yiannis Sanakis
- Institute of Nanoscience and Nanotechnology, NCSR "Demokritos", 15341 Aghia Paraskevi, Athens, Greece.
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Astaf'eva TV, Rumyantcev RV, Arsenyev MV, Zherebtsov MA, Fukin GK, Cherkasov VK, Poddel'sky AI. 1D Coordination polymers based on triphenylantimony(V) 3-formyl-substituted catecholates. J Organomet Chem 2022. [DOI: 10.1016/j.jorganchem.2021.122190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Kaemmerer H, Mereacre V, Ako AM, Mameri S, Anson CE, Clérac R, Powell AK. Assisted Self-Assembly to Target Heterometallic Mn-Nd and Mn-Sm SMMs: Synthesis and Magnetic Characterisation of [Mn 7 Ln 3 (O) 4 (OH) 4 (mdea) 3 (piv) 9 (NO 3 ) 3 ] (Ln=Nd, Sm, Eu, Gd)*. Chemistry 2021; 27:15095-15101. [PMID: 34554613 PMCID: PMC8596590 DOI: 10.1002/chem.202102912] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Indexed: 11/10/2022]
Abstract
In an assisted self-assembly approach starting from the [Mn6 O2 (piv)10 (4-Me-py)2 (pivH)2 ] cluster a family of Mn-Ln compounds (Ln=Pr-Yb) was synthesised. The reaction of [Mn6 O2 (piv)10 (4-Me-py)2 (pivH)2 ] (1) with N-methyldiethanolamine (mdeaH2 ) and Ln(NO3 )3 ⋅ 6H2 O in MeCN generally yields two main structure types: for Ln=Tb-Yb a previously reported Mn5 Ln4 motif is obtained, whereas for Ln=Pr-Eu a series of Mn7 Ln3 clusters is obtained. Within this series the GdIII analogue represents a special case because it shows both structural types as well as a third Mn2 Ln2 inverse butterfly motif. Variation in reaction conditions allows access to different structure types across the whole series. This prompts further studies into the reaction mechanism of this cluster assisted self-assembly approach. For the Mn7 Ln3 analogues reported here variable-temperature magnetic susceptibility measurements suggest that antiferromagnetic interactions between the spin carriers are dominant. Compounds incorporating Ln=NdIII (2), SmIII (3) and GdIII (5) display SMM behaviour. The slow relaxation of the magnetisation for these compounds was confirmed by ac measurements above 1.8 K.
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Affiliation(s)
- Hagen Kaemmerer
- Institute of Inorganic ChemistryKarlsruhe Institute of TechnologyEngesserstr. 1576131KarlsruheGermany
- Institute for Quantum Materials and Technologies (IQMT)Karlsruhe Institute of TechnologyHermann-von-Helmholtz-Platz 176344Eggenstein-LeopoldshafenGermany
| | - Valeriu Mereacre
- Institute of Inorganic ChemistryKarlsruhe Institute of TechnologyEngesserstr. 1576131KarlsruheGermany
| | - Ayuk M. Ako
- Institute of Inorganic ChemistryKarlsruhe Institute of TechnologyEngesserstr. 1576131KarlsruheGermany
| | - Samir Mameri
- Université de StrasbourgIUT Robert SchumanCS 10315, 67411Illkirch CedexFrance
| | - Christopher E. Anson
- Institute of Inorganic ChemistryKarlsruhe Institute of TechnologyEngesserstr. 1576131KarlsruheGermany
| | - Rodolphe Clérac
- Univ. Bordeaux CNRS, Centre de Recherche Paul Pascal UMR 503133600PessacFrance
| | - Annie K. Powell
- Institute of Inorganic ChemistryKarlsruhe Institute of TechnologyEngesserstr. 1576131KarlsruheGermany
- Institute for Quantum Materials and Technologies (IQMT)Karlsruhe Institute of TechnologyHermann-von-Helmholtz-Platz 176344Eggenstein-LeopoldshafenGermany
- Institute for Nanotechnology (INT)Karlsruhe Institute of TechnologyHermann-von-Helmholtz-Platz 176344Eggenstein-LeopoldshafenGermany
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Peng Y, Kaemmerer H, Powell AK. From the {Fe III 2 Ln 2 } Butterfly's Perspective: the Magnetic Benefits and Challenges of Cooperativity within 3 d-4 f Based Coordination Clusters. Chemistry 2021; 27:15043-15065. [PMID: 34582064 PMCID: PMC8597143 DOI: 10.1002/chem.202102962] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Indexed: 11/19/2022]
Abstract
In this Review we discuss the tuning handles which can be used to steer the magnetic properties of FeIII‐4 f “butterfly” compounds. The majority of presented compounds were produced in the context of project A3 “Di‐ to tetranuclear compounds incorporating highly anisotropic paramagnetic metal ions” within the SFB/TRR88 “3MET”. These contain {FeIII2Ln2} cores encapsulated in ligand shells which are easy to tune in a “test‐bed” system. We identify the following advantages and variables in such systems: (i) the complexes are structurally simple usually with one crystallographically independent FeIII and LnIII, respectively. This simplifies theory and anaylsis; (ii) choosing Fe allows 57Fe Mössbauer spectroscopy to be used as an additional technique which can give information about oxidation levels and spin states, local moments at the iron nuclei and spin‐relaxation and, more importantly, about the anisotropy not only of the studied isotope, but also of elements interacting with this isotope; (iii) isostructural analogues with all the available (i. e. not Pm) 4 f ions can be synthesised, enabling a systematic survey of the influence of the 4 f ion on the electronic structure; (iv) this cluster type is obtained by reacting [FeIII3O(O2CR)6(L)3](X) (X=anion, L=solvent such as H2O, py) with an ethanolamine‐based ligand L′ and lanthanide salts. This allows to study analogues of [FeIII2Ln2(μ3‐OH)2(L′)2(O2CR)6] using the appropriate iron trinuclear starting materials. (v) the organic main ligand can be readily functionalised, facilitating a systematic investigation of the effect of organic substituents on the ligands on the magnetic properties of the complexes. We describe and discuss 34 {MIII2Ln2} (M=Fe or in one case Al) butterfly compounds which have been reported up to 2020. The analysis of these gives perspectives for designing new SMM systems with specific electronic and magnetic signatures
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Affiliation(s)
- Yan Peng
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology, Engesserstr. 15, 76131, Karlsruhe, Germany.,Institute for Nanotechnology (INT), Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany.,School of Chemistry and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou, 341000, P.R. China
| | - Hagen Kaemmerer
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology, Engesserstr. 15, 76131, Karlsruhe, Germany.,Institute for Quantum Materials and Technologies (IQMT), Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany
| | - Annie K Powell
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology, Engesserstr. 15, 76131, Karlsruhe, Germany.,Institute for Nanotechnology (INT), Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany.,Institute for Quantum Materials and Technologies (IQMT), Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany
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6
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Alsowayigh MM, Timco GA, Borilovic I, Alanazi A, Vitorica-Yrezabal IJ, Whitehead GFS, McNaughter PD, Tuna F, O'Brien P, Winpenny REP, Lewis DJ, Collison D. Heterometallic 3d-4f Complexes as Air-Stable Molecular Precursors in Low Temperature Syntheses of Stoichiometric Rare-Earth Orthoferrite Powders. Inorg Chem 2020; 59:15796-15806. [PMID: 33044071 DOI: 10.1021/acs.inorgchem.0c02249] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Four 3d-4f hetero-polymetallic complexes [Fe2Ln2((OCH2)3CR)2(O2CtBu)6(H2O)4] (where Ln = La (1 and 2) and Gd (3 and 4); and R = Me (1 and 3) and Et (2 and 4)) are synthesized and analyzed using elemental analysis, Fourier transform infrared spectroscopy, thermogravimetric analysis, and SQUID magnetometry. Crystal structures are obtained for both methyl derivatives and show that the complexes are isostructural and adopt a defective dicubane topology. The four heavy metals are connected with two alkoxide bridges. These four precursors are used as single-source precursors to prepare rare-earth orthoferrite pervoskites of the form LnFeO3. Thermal decomposition in a ceramic boat in a tube furnace gives orthorhombic LnFeO3 powders using optimized temperatures and decomposition times: LaFeO3 formed at 650 °C over 30 min, whereas GdFeO3 formed at 750 °C over 18 h. These materials are structurally characterized using powder X-ray diffraction, Raman spectroscopy, scanning electron microscopy, energy-dispersive X-ray map spectroscopy, and SQUID magnetometry. EDX spectroscopy mapping reveals a homogeneous spatial distribution of elements for all four materials consistent with LnFeO3. Magnetic measurements on complexes 1-4 confirm the presence of weak antiferromagnetic coupling between the central Fe(III) ions of the clusters and negligible ferromagnetic interaction with peripheral Gd(III) ions in 3 and 4. Zero-field-cooled and field-cooled measurements of magnetization of LaFeO3 and GdFeO3 in the solid-state suggest that both materials are ferromagnetic, and both materials show open magnetic hysteresis loops at 5 and 300 K, with Msat higher than previously reported for these nanomaterials. We conclude that this is a new and facile low temperature route to these important magnetic materials that is potentially universal, limited only by what metals can be programmed into the precursor complexes.
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Affiliation(s)
- Marwah M Alsowayigh
- Department of Chemistry, The University of Manchester, Oxford Road, Manchester, M13 9PL, United Kingdom.,Chemistry Department, College of Science, King Faisal University, P.O. 380, Al-Ahsa 31982, Kingdom of Saudia Arabia
| | - Grigore A Timco
- Department of Chemistry, The University of Manchester, Oxford Road, Manchester, M13 9PL, United Kingdom
| | - Ivana Borilovic
- Photon Science Institute, The University of Manchester, Oxford Road, Manchester, M13 9PL, United Kingdom
| | - Abdulaziz Alanazi
- Department of Chemistry, The University of Manchester, Oxford Road, Manchester, M13 9PL, United Kingdom
| | - Inigo J Vitorica-Yrezabal
- Department of Chemistry, The University of Manchester, Oxford Road, Manchester, M13 9PL, United Kingdom
| | - George F S Whitehead
- Department of Chemistry, The University of Manchester, Oxford Road, Manchester, M13 9PL, United Kingdom
| | - Paul D McNaughter
- Department of Chemistry, The University of Manchester, Oxford Road, Manchester, M13 9PL, United Kingdom
| | - Floriana Tuna
- Photon Science Institute, The University of Manchester, Oxford Road, Manchester, M13 9PL, United Kingdom
| | - Paul O'Brien
- Department of Chemistry, The University of Manchester, Oxford Road, Manchester, M13 9PL, United Kingdom.,Department of Materials, The University of Manchester, Oxford Road, Manchester, M13 9PL, United Kingdom
| | - Richard E P Winpenny
- Department of Chemistry, The University of Manchester, Oxford Road, Manchester, M13 9PL, United Kingdom
| | - David J Lewis
- Department of Materials, The University of Manchester, Oxford Road, Manchester, M13 9PL, United Kingdom
| | - David Collison
- Department of Chemistry, The University of Manchester, Oxford Road, Manchester, M13 9PL, United Kingdom
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A New FeIII Substituted Arsenotungstate [FeIII2(AsIIIW6O23)2(AsIIIO3H)2]12−: Synthesis, Structure, Characterization and Magnetic Properties. MAGNETOCHEMISTRY 2020. [DOI: 10.3390/magnetochemistry6040054] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The iron(III)-containing arsenotungstate [FeIII2(AsIIIW6O23)2(AsIIIO3H)2]12− (1) was prepared via a simple, one-pot reaction in aqueous basic medium. The compound was isolated as its sodium salt, and structurally-characterized by Single Crystal X-ray Diffraction (SCXRD), Powder X-ray Diffraction (PXRD), Fourier-Transform Infrared (FT-IR) spectroscopy, Thermogravimetric Analysis (TGA) and elemental analysis. Its magnetic properties are reported; the antiferromagnetic coupling between the two FeIII centers is unusually weak as a result of the bridging geometry imposed by the rigid arsenotungstate metalloligands.
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8
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Zang TT, Cao JP, Du ZY, Mei H, Xu Y. Two new Schiff-base modified vanadium complexes with third-order NLO properties. J COORD CHEM 2020. [DOI: 10.1080/00958972.2020.1827144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Ting-Ting Zang
- College of Chemical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing, P. R. China
| | - Jia-Peng Cao
- College of Chemical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing, P. R. China
| | - Ze-Yu Du
- College of Chemical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing, P. R. China
| | - Hua Mei
- College of Chemical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing, P. R. China
| | - Yan Xu
- College of Chemical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing, P. R. China
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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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Li H, Meng X, Wang M, Wang Y, Shi W, Cheng P. A {Tb2Fe3} Pyramid Single‐Molecule Magnet with Ferromagnetic Tb‐Fe Interaction. CHINESE J CHEM 2019. [DOI: 10.1002/cjoc.201800589] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Han Li
- College of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry (MOE) and Collaborative Innovation Center, of Chemical Science and Engineering (Tianjin), Nankai University Tianjin 300071 China
| | - Xixi Meng
- College of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry (MOE) and Collaborative Innovation Center, of Chemical Science and Engineering (Tianjin), Nankai University Tianjin 300071 China
| | - Mengmeng Wang
- College of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry (MOE) and Collaborative Innovation Center, of Chemical Science and Engineering (Tianjin), Nankai University Tianjin 300071 China
| | - Yu‐Xia Wang
- College of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry (MOE) and Collaborative Innovation Center, of Chemical Science and Engineering (Tianjin), Nankai University Tianjin 300071 China
| | - Wei Shi
- College of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry (MOE) and Collaborative Innovation Center, of Chemical Science and Engineering (Tianjin), Nankai University Tianjin 300071 China
| | - Peng Cheng
- College of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry (MOE) and Collaborative Innovation Center, of Chemical Science and Engineering (Tianjin), Nankai University Tianjin 300071 China
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11
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Butterfly-shaped, heterometallic, hexanuclear, [FeIII2LnIII4] (LnIII = GdIII, TbIII, DyIII and HoIII) Complexes: Syntheses, structure and magnetism. Inorganica Chim Acta 2019. [DOI: 10.1016/j.ica.2018.08.014] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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12
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Singh N, Das Gupta S, Butcher RJ, Christou G. Synthesis and magnetochemistry of heterometallic triangular FeLn III (Ln = La, Gd, Tb, Dy, and Ho) and FeY III complexes. Dalton Trans 2017; 46:7897-7903. [PMID: 28598470 DOI: 10.1039/c7dt00949f] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of Fe2Ln (Ln = La, Gd, Tb, Dy and Ho) and Fe2Y complexes have been synthesized via metal substitution and characterized by single crystal X-ray diffraction. All the molecules are isostructural and have a Fe2LnO triangular core with the oxygen atom existing as an μ3-oxo2- anion. DC and AC magnetic susceptibility studies were performed on all the molecules. For Fe2Ln (Ln = Gd, La) and Fe2Y, the data were fitted to Van Vleck equations and the magnetic coupling constants were obtained. In all cases, the two Fe(iii) spins were found to be antiparallel to each other in the ground state leaving the heterometal to remain essentially uncoupled.
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Affiliation(s)
- Namrata Singh
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur-208016, U.P., India.
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Ibrahim M, Haider A, Xiang Y, Bassil BS, Carey AM, Rullik L, Jameson GB, Doungmene F, Mbomekallé IM, Oliveira PD, Mereacre V, Kostakis GE, Powell AK, Kortz U. Tetradecanuclear Iron(III)-Oxo Nanoclusters Stabilized by Trilacunary Heteropolyanions. Inorg Chem 2015; 54:6136-46. [DOI: 10.1021/acs.inorgchem.5b00124] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Masooma Ibrahim
- Department
of Life Sciences and Chemistry, Jacobs University, P.O. Box 750 561, 28725 Bremen, Germany
| | - Ali Haider
- Department
of Life Sciences and Chemistry, Jacobs University, P.O. Box 750 561, 28725 Bremen, Germany
| | - Yixian Xiang
- Department
of Life Sciences and Chemistry, Jacobs University, P.O. Box 750 561, 28725 Bremen, Germany
| | - Bassem S. Bassil
- Department
of Life Sciences and Chemistry, Jacobs University, P.O. Box 750 561, 28725 Bremen, Germany
- Department
of Chemistry, Faculty of Sciences, University of Balamand, P.O. Box 100, Tripoli, Lebanon
| | - Akina M. Carey
- Department
of Life Sciences and Chemistry, Jacobs University, P.O. Box 750 561, 28725 Bremen, Germany
| | - Lisa Rullik
- Department
of Life Sciences and Chemistry, Jacobs University, P.O. Box 750 561, 28725 Bremen, Germany
| | - Geoffrey B. Jameson
- Institute
of Fundamental Sciences, Massey University, Tennent Drive, Palmerston North 4442, New Zealand
| | - Floriant Doungmene
- Equipe
d’Electrochimie et de Photoélectrochimie, Laboratoire
de Chimie-Physique, Université Paris-Sud, UMR 8000 CNRS, Orsay F-91405, France
| | - Israël M. Mbomekallé
- Equipe
d’Electrochimie et de Photoélectrochimie, Laboratoire
de Chimie-Physique, Université Paris-Sud, UMR 8000 CNRS, Orsay F-91405, France
| | - Pedro de Oliveira
- Equipe
d’Electrochimie et de Photoélectrochimie, Laboratoire
de Chimie-Physique, Université Paris-Sud, UMR 8000 CNRS, Orsay F-91405, France
| | - Valeriu Mereacre
- Institute
of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstrasse 15, 76131 Karlsruhe, Germany
| | - George E. Kostakis
- Department of Chemistry, School of Life Sciences, University of Sussex, Brighton BN1 9QJ, United Kingdom
| | - Annie K. Powell
- Institute
of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstrasse 15, 76131 Karlsruhe, Germany
- Institute
of Nanotechnology, Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz
Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Ulrich Kortz
- Department
of Life Sciences and Chemistry, Jacobs University, P.O. Box 750 561, 28725 Bremen, Germany
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14
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Polyzou CD, Baniodeh A, Magnani N, Mereacre V, Zill N, Anson CE, Perlepes SP, Powell AK. Squashed {Fe2IIIM4III} octahedra (M = Y, Gd, Dy) from the first use of the cyanoacetate ligand in 3d/4f coordination chemistry. RSC Adv 2015. [DOI: 10.1039/c4ra15458d] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
The first use of the cyanoacetate ligand in 3d/4f-metal chemistry leads to {Fe2IIIM4III} (M = Dy, Gd, Y) coordination clusters with a squashed octahedral core structure; the DyIII compound exhibits slow relaxation of the magnetisation.
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Affiliation(s)
- Christina D. Polyzou
- Department of Chemistry
- University of Patras
- 26504 Patras, Greece
- Institute of Inorganic Chemistry
- Karlsruhe Institute of Technology
| | - Amer Baniodeh
- Institute of Inorganic Chemistry
- Karlsruhe Institute of Technology
- 76131 Karlsruhe, Germany
- Institute of Nanotechnology
- Karlsruhe Institute of Technology
| | - Nicola Magnani
- Institute of Nanotechnology
- Karlsruhe Institute of Technology
- 76344 Eggenstein-Leopoldshafen, Germany
| | - Valeriu Mereacre
- Institute of Inorganic Chemistry
- Karlsruhe Institute of Technology
- 76131 Karlsruhe, Germany
| | - Nicolas Zill
- Institute of Nanotechnology
- Karlsruhe Institute of Technology
- 76344 Eggenstein-Leopoldshafen, Germany
| | - Christopher E. Anson
- Institute of Inorganic Chemistry
- Karlsruhe Institute of Technology
- 76131 Karlsruhe, Germany
| | | | - Annie K. Powell
- Institute of Inorganic Chemistry
- Karlsruhe Institute of Technology
- 76131 Karlsruhe, Germany
- Institute of Nanotechnology
- Karlsruhe Institute of Technology
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15
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Li H, Shi W, Niu Z, Zhou JM, Xiong G, Li LL, Cheng P. Remarkable LnIII3FeIII2 clusters with magnetocaloric effect and slow magnetic relaxation. Dalton Trans 2015; 44:468-71. [DOI: 10.1039/c4dt02871f] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two 3d–4f clusters were reported: Gd3Fe2 possesses significant magnetic entropy change and slow magnetic relaxation is observed in Dy3Fe2.
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Affiliation(s)
- Han Li
- Department of Chemistry and Key Laboratory of Advanced Energy Materials Chemistry (MOE)
- Nankai University
- Tianjin 300071
- P. R. China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
| | - Wei Shi
- Department of Chemistry and Key Laboratory of Advanced Energy Materials Chemistry (MOE)
- Nankai University
- Tianjin 300071
- P. R. China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
| | - Zheng Niu
- Department of Chemistry and Key Laboratory of Advanced Energy Materials Chemistry (MOE)
- Nankai University
- Tianjin 300071
- P. R. China
| | - Jing-Min Zhou
- Department of Chemistry and Key Laboratory of Advanced Energy Materials Chemistry (MOE)
- Nankai University
- Tianjin 300071
- P. R. China
| | - Gang Xiong
- Department of Chemistry and Key Laboratory of Advanced Energy Materials Chemistry (MOE)
- Nankai University
- Tianjin 300071
- P. R. China
| | - Lei-Lei Li
- Department of Chemistry and Key Laboratory of Advanced Energy Materials Chemistry (MOE)
- Nankai University
- Tianjin 300071
- P. R. China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
| | - Peng Cheng
- Department of Chemistry and Key Laboratory of Advanced Energy Materials Chemistry (MOE)
- Nankai University
- Tianjin 300071
- P. R. China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
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16
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Goura J, Mereacre V, Novitchi G, Powell AK, Chandrasekhar V. Homometallic FeIII4and Heterometallic {FeIII4LnIII2} (Ln = Dy, Tb) Complexes - Syntheses, Structures, and Magnetic Properties. Eur J Inorg Chem 2014. [DOI: 10.1002/ejic.201402636] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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17
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Bag P, Goura J, Mereacre V, Novitchi G, Powell AK, Chandrasekhar V. Synthesis, magnetism and Mössbauer studies of tetranuclear heterometallic {FeIII2Ln2}(Ln = Gd, Dy, Tb) complexes: evidence of slow relaxation of magnetization in the terbium analogue. Dalton Trans 2014; 43:16366-76. [DOI: 10.1039/c4dt01451k] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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18
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Goura J, Liu J, Goddard P, Chandrasekhar V. A Direct Three‐Component Reaction for the Isolation of a Nonanuclear Iron(III) Phosphonate. Eur J Inorg Chem 2014. [DOI: 10.1002/ejic.201402371] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Joydeb Goura
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, India, http://www.iitk.ac.in
| | - Junjie Liu
- Clarendon Laboratory, University of Oxford, UK, Parks Road, Oxford, UK, United Kingdom, http://www2.physics.ox.ac.uk/
| | - Paul Goddard
- Clarendon Laboratory, University of Oxford, UK, Parks Road, Oxford, UK, United Kingdom, http://www2.physics.ox.ac.uk/
- Department of Physics, University of Warwick, Gibbets Hill Road, Coventry, CV4 7AL, United Kingdom http://www2.warwick.ac.uk/
| | - Vadapalli Chandrasekhar
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, India, http://www.iitk.ac.in
- National Institute of Science Education and Research, Institute of Physics Campus, SachivalayaMarg, P. O. Sainik School, Bhubaneswar 751005, India, http://www.niser.ac.in
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19
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Li ZY, Dai Y, Zhang H, Zhu J, Zhang JJ, Liu SQ, Duan CY. Square and Butterfly Tetranuclear [Co2Ln2] Clusters Built from the Same Building Blocks but Displaying Different Magnetic Properties: Structural Variation by Means of Solvent and the Radii of Ln3+Ions. Eur J Inorg Chem 2013. [DOI: 10.1002/ejic.201301020] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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20
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Abbas G, Lan Y, Mereacre V, Buth G, Sougrati MT, Grandjean F, Long GJ, Anson CE, Powell AK. Synthesis, Magnetism, and 57Fe Mössbauer Spectroscopic Study of a Family of [Ln3Fe7] Coordination Clusters (Ln = Gd, Tb, and Er). Inorg Chem 2013; 52:11767-77. [DOI: 10.1021/ic401011d] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Ghulam Abbas
- Institut für
Anorganische Chemie, Karlsruhe Institute of Technology, Engesserstrasse
15, D-76131 Karlsruhe, Germany
| | - Yanhua Lan
- Institut für
Anorganische Chemie, Karlsruhe Institute of Technology, Engesserstrasse
15, D-76131 Karlsruhe, Germany
| | - Valeriu Mereacre
- Institut für
Anorganische Chemie, Karlsruhe Institute of Technology, Engesserstrasse
15, D-76131 Karlsruhe, Germany
| | | | | | | | - Gary J. Long
- Department of Chemistry, Missouri University of Science
and Technology, University of Missouri, Rolla, Missouri 65409-0010, United States
| | - Christopher E. Anson
- Institut für
Anorganische Chemie, Karlsruhe Institute of Technology, Engesserstrasse
15, D-76131 Karlsruhe, Germany
| | - Annie K. Powell
- Institut für
Anorganische Chemie, Karlsruhe Institute of Technology, Engesserstrasse
15, D-76131 Karlsruhe, Germany
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