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Panja A, Paul S, Moreno-Pineda E, Herchel R, Jana NC, Brandão P, Novitchi G, Wernsdorfer W. Insight into ferromagnetic interactions in Cu II-Ln III dimers with a compartmental ligand. Dalton Trans 2024; 53:2501-2511. [PMID: 38205580 PMCID: PMC10845014 DOI: 10.1039/d3dt03557c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Accepted: 12/27/2023] [Indexed: 01/12/2024]
Abstract
In the last two decades, efforts have been devoted to obtaining insight into the magnetic interactions between CuII and LnIII utilizing experimental and theoretical means. Experimentally, it has been observed that the exchange coupling (J) in CuII-LnIII systems is often found to be ferromagnetic for ≥4f7 metal ions. However, exchange interactions at sub-Kelvin temperatures between CuII and the anisotropic/isotropic LnIII ions are not often explored. In this report, we have synthesized a series of heterobimetallic [CuLn(HL)(μ-piv)(piv)2] complexes (LnIII = Gd (1), Tb (2), Dy (3) and Er (4)) from a new compartmental Schiff base ligand, N,N'-bis(3-methoxy-5-methylsalicylidene)-1,3-diamino-2-propanol (H3L). X-ray crystallographic analysis reveals that all four complexes are isostructural and isomorphous. Magnetic susceptibility measurements reveal a ferromagnetic coupling between the CuII ion and its respective LnIII ion for all the complexes, as often observed. Moreover, μ-SQUID studies, at sub-Kelvin temperatures, show S-shaped hysteresis loops indicating the presence of antiferromagnetic coupling in complexes 1-3. The antiferromagnetic interaction is explained by considering the shortest Cu⋯Cu distance in the crystal structure. The nearly closed loops for 1-3 highlight their fast relaxation characteristics, while the opened loops for 4 might arise from intermolecular ordering. CASSCF calculations allow the quantitative assessment of the interactions, which are further supported by BS-DFT calculations.
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Affiliation(s)
- Anangamohan Panja
- Department of Chemistry, Gokhale Memorial Girls' College, 1/1 Harish Mukherjee Road, Kolkata-700020, India.
- Department of Chemistry, Panskura Banamali College, Panskura RS, WB 721152, India
| | - Sagar Paul
- Physikalisches Institut, Karlsruhe Institute of Technology, D-76131 Karlsruhe, Germany.
| | - Eufemio Moreno-Pineda
- Universidad de Panamá, Facultad de Ciencias Naturales, Exactas y Tecnología, Depto. de Química-Física, 0824 Panamá, Panama
- Universidad de Panamá, Facultad de Ciencias Naturales, Exactas y Tecnología, Grupo de Investigación de Materiales, 0824 Panamá, Panama
| | - Radovan Herchel
- Department of Inorganic Chemistry, Faculty of Science, Palacký University, 17. listopadu 12, 77146 Olomouc, Czech Republic
| | - Narayan Ch Jana
- Department of Chemistry, Panskura Banamali College, Panskura RS, WB 721152, India
| | - Paula Brandão
- Department of Chemistry, CICECO-Aveiro Institute of Materials, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Ghenadie Novitchi
- Laboratoire National des Champs Magnétiques Intenses, UPR CNRS 3228, Université Grenoble-Alpes, B.P. 166, 38042 Grenoble Cedex 9, France
| | - Wolfgang Wernsdorfer
- Physikalisches Institut, Karlsruhe Institute of Technology, D-76131 Karlsruhe, Germany.
- Institute for Quantum Materials and Technology (IQMT), Karlsruhe Institute of Technology (KIT), Eggenstein-Leopoldshafen D-76344, Germany
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Bazhina ES, Shmelev MA, Babeshkin KA, Efimov NN, Kiskin MA, Eremenko IL. Two families of Ln(III)-V(IV) compounds (Ln(III) = Eu, Tb, Dy, Ho) of different structural types mediated by Rb+ and Cs+ cations: Slow magnetic relaxation of Eu(III)- and Ho(III)-containing members. Polyhedron 2023. [DOI: 10.1016/j.poly.2023.116385] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
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3
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Sheikh JA, Jena HS, Konar S. Co 3Gd 4 Cage as Magnetic Refrigerant and Co 3Dy 3 Cage Showing Slow Relaxation of Magnetisation. Molecules 2022; 27:molecules27031130. [PMID: 35164395 PMCID: PMC8840112 DOI: 10.3390/molecules27031130] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 01/31/2022] [Accepted: 02/01/2022] [Indexed: 02/04/2023] Open
Abstract
Two structurally dissimilar 3d-4f cages having the formulae [(CoIII)3Gd4(μ3-OH)2(CO3) (O2CtBu)11(teaH)3]·5H2O (1) and [(CoIII)3Dy3(μ3-OH)4(O2CtBu)6(teaH)3]·(NO3)2·H2O (2) have been isolated under similar reaction conditions and stoichiometry of the reactants. The most important factor for structural diversity seems to be the incorporation of one μ3-carbonate anion in 1 and not in 2. Co atoms are in a +3 oxidation state in both complexes, as shown by the Bond Valence Sum (BVS) calculations and bond lengths, and as further supported by magnetic measurements. Co3Gd4 displays a significant magnetocaloric effect (−∆Sm = 25.67 J kg−1 K−1), and Co3Dy3 shows a single molecule magnet (SMM) behavior.
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Affiliation(s)
- Javeed Ahmad Sheikh
- Department of Chemistry, Government, College for Women, Constituent College of Cluster University, M. A. Road, Srinagar 190001, Jammu and Kashmir, India
- Department of Chemistry, IISER Bhopal, Bhopal By-Pass Road, Bhopal 462066, Madhya Pradesh, India; or
- Correspondence: (J.A.S.); (S.K.); Tel.: +91-7889872799 (J.A.S.)
| | - Himanshu Sekhar Jena
- Department of Chemistry, IISER Bhopal, Bhopal By-Pass Road, Bhopal 462066, Madhya Pradesh, India; or
- Department of Chemistry, Ghent University, Krijgslaan 281-S3 B, 9000 Ghent, Belgium
| | - Sanjit Konar
- Department of Chemistry, IISER Bhopal, Bhopal By-Pass Road, Bhopal 462066, Madhya Pradesh, India; or
- Correspondence: (J.A.S.); (S.K.); Tel.: +91-7889872799 (J.A.S.)
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4
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Razali MR, Urbatsch A, Moubaraki B, Murray KS, Deacon GB, Batten SR. Copper mediated in situ nucleophilic addition of polyalcohols to dicyanonitrosomethanide
†. Aust J Chem 2022. [DOI: 10.1071/ch21323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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5
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Jablonski J, Bresien J, Köckerling M. An Unprecedented Cluster Unit in (BMIm)
2
[Hf
9
Cl
14
H
8
(AlCl
4
)
6
]. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202100191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Jonas Jablonski
- Universität Rostock Institut für Chemie Anorganische Festkörperchemie Albert-Einstein-Str. 3a 18059 Rostock Germany
| | - Jonas Bresien
- Universität Rostock Institut für Chemie Anorganische und Elementorganische Chemie Albert-Einstein-Str. 3a 18059 Rostock Germany
| | - Martin Köckerling
- Universität Rostock Institut für Chemie Anorganische Festkörperchemie Albert-Einstein-Str. 3a 18059 Rostock Germany
- Universität Rostock Department Life Light and Matter 18051 Rostock Germany
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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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Nicolini A, Affronte M, SantaLucia DJ, Borsari M, Cahier B, Caleffi M, Ranieri A, Berry JF, Cornia A. Tetrairon(II) extended metal atom chains as single-molecule magnets. Dalton Trans 2021; 50:7571-7589. [PMID: 33983354 PMCID: PMC8214398 DOI: 10.1039/d1dt01007g] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Iron-based extended metal atom chains (EMACs) are potentially high-spin molecules with axial magnetic anisotropy and thus candidate single-molecule magnets (SMMs). We herein compare the tetrairon(ii), halide-capped complexes [Fe4(tpda)3Cl2] (1Cl) and [Fe4(tpda)3Br2] (1Br), obtained by reacting iron(ii) dihalides with [Fe2(Mes)4] and N2,N6-di(pyridin-2-yl)pyridine-2,6-diamine (H2tpda) in toluene, under strictly anhydrous and anaerobic conditions (HMes = mesitylene). Detailed structural, electrochemical and Mössbauer data are presented along with direct-current (DC) and alternating-current (AC) magnetic characterizations. DC measurements revealed similar static magnetic properties for the two derivatives, with χMT at room temperature above that for independent spin carriers, but much lower at low temperature. The electronic structure of the iron(ii) ions in each derivative was explored by ab initio (CASSCF-NEVPT2-SO) calculations, which showed that the main magnetic axis of all metals is directed close to the axis of the chain. The outer metals, Fe1 and Fe4, have an easy-axis magnetic anisotropy (D = -11 to -19 cm-1, |E/D| = 0.05-0.18), while the internal metals, Fe2 and Fe3, possess weaker hard-axis anisotropy (D = 8-10 cm-1, |E/D| = 0.06-0.21). These single-ion parameters were held constant in the fitting of DC magnetic data, which revealed ferromagnetic Fe1-Fe2 and Fe3-Fe4 interactions and antiferromagnetic Fe2-Fe3 coupling. The competition between super-exchange interactions and the large, noncollinear anisotropies at metal sites results in a weakly magnetic non-Kramers doublet ground state. This explains the SMM behavior displayed by both derivatives in the AC susceptibility data, with slow magnetic relaxation in 1Br being observable even in zero static field.
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Affiliation(s)
- Alessio Nicolini
- Department of Chemical and Geological Sciences, University of Modena and Reggio Emilia & INSTM, I-41125 Modena, Italy. and Department of Physics, Informatics and Mathematics, University of Modena and Reggio Emilia, I-41125 Modena, Italy
| | - Marco Affronte
- Department of Physics, Informatics and Mathematics, University of Modena and Reggio Emilia, I-41125 Modena, Italy
| | - Daniel J SantaLucia
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, Wisconsin 53706, USA
| | - Marco Borsari
- Department of Chemical and Geological Sciences, University of Modena and Reggio Emilia & INSTM, I-41125 Modena, Italy.
| | - Benjamin Cahier
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470 Mülheim an der Ruhr, Germany
| | - Matteo Caleffi
- Department of Physics, Informatics and Mathematics, University of Modena and Reggio Emilia, I-41125 Modena, Italy
| | - Antonio Ranieri
- Department of Life Sciences, University of Modena and Reggio Emilia, I-41125 Modena, Italy
| | - John F Berry
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, Wisconsin 53706, USA
| | - Andrea Cornia
- Department of Chemical and Geological Sciences, University of Modena and Reggio Emilia & INSTM, I-41125 Modena, Italy.
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8
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Yin JJ, Lu TQ, Chen C, Shi HY, Zhuang GL, Zheng J, Fang X, Zheng XY. A new family of decanuclear Ln 7Cr 3 clusters exhibiting a magnetocaloric effect. RSC Adv 2021; 11:17346-17351. [PMID: 35479672 PMCID: PMC9033162 DOI: 10.1039/d1ra02734d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Accepted: 05/05/2021] [Indexed: 01/16/2023] Open
Abstract
Two dimeric Ln–Cr clusters with formula {Ln(H2O)8[Ln6Cr3(L)6(CH3COO)6(μ3-OH)12(H2O)12]}·(ClO4)6·xH2O (Ln = Gd, x = 35 for 1 and Ln = Dy, x = 45 for 2, HL = 2-pyrazinecarboxylic acid) were obtained by a ligand-controlled hydrolytic method with a mixed ligand system (2-pyrazinecarboxylic acid and acetate). Single crystal structure analysis showed that two trigonal bipyramids of [Gd3Cr2(μ3-OH)6]9+ worked as building blocks in constructing the metal-oxo cluster core of [Gd6Cr3(μ3-OH)12]15+ by sharing a common top – a Cr3+ ion. Additionally, compound 1 forms a three-dimensional framework with a one-dimensional nanopore channel along the a-axis through a hydrogen-bond interaction between the cationic cluster core and the free mononuclear cation [Gd(H2O)8]3+ and the π-bond interactions of the pyrazine groups on the two cationic cluster cores. Magnetic calculations indicated a weak ferromagnetic coupling interaction for Gd⋯Gd and Gd⋯Cr in compound 1, with its magnetic entropy change (−ΔSm) reaching 21.1 J kg−1 K−1 at 5 K, 7 T, while compound 2 displayed an obvious frequency-dependency at Hdc = 2000 Oe. Two decanuclear Ln–Cr clusters Ln7Cr3 were obtained, which formed a three-dimensional framework with one-dimensional nanopore channel through hydrogen-bond and π-bond interactions. Gd7Cr3 had a magnetic entropy change of 21.1 J kg−1 K−1 at 5 K, 7 T.![]()
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Affiliation(s)
- Jia-Jia Yin
- Institutes of Physical Science and Information Technology, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Photoelectric Conversion Energy Materials and Devices Key Laboratory of Anhui Province, Anhui University Hefei 230601 China
| | - Tian-Qi Lu
- Institutes of Physical Science and Information Technology, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Photoelectric Conversion Energy Materials and Devices Key Laboratory of Anhui Province, Anhui University Hefei 230601 China
| | - Cheng Chen
- Institutes of Physical Science and Information Technology, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Photoelectric Conversion Energy Materials and Devices Key Laboratory of Anhui Province, Anhui University Hefei 230601 China
| | - Hai-Yan Shi
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University Xiamen 361005 China
| | - Gui-Lin Zhuang
- College of Chemical Engineering, Zhejiang University of Technology Hangzhou 310032 China
| | - Jun Zheng
- Institutes of Physical Science and Information Technology, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Photoelectric Conversion Energy Materials and Devices Key Laboratory of Anhui Province, Anhui University Hefei 230601 China
| | - Xiaolong Fang
- College of Materials and Chemical Engineering, Anhui Jianzhu University Hefei 230601 China
| | - Xiu-Ying Zheng
- Institutes of Physical Science and Information Technology, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Photoelectric Conversion Energy Materials and Devices Key Laboratory of Anhui Province, Anhui University Hefei 230601 China .,State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University Xiamen 361005 China
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10
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Dermitzaki D, Raptopoulou CP, Psycharis V, Escuer A, Perlepes SP, Mayans J, Stamatatos TC. Further synthetic investigation of the general lanthanoid(iii) [Ln(iii)]/copper(ii)/pyridine-2,6-dimethanol/carboxylate reaction system: {CuLn} coordination clusters (Ln = Dy, Tb, Ho) and their yttrium(iii) analogue. Dalton Trans 2021; 50:240-251. [PMID: 33295895 DOI: 10.1039/d0dt03582c] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In addition to previously studied {CuGd6}, {CuGd4}, {CuLn7} and {CuLn8} coordination clusters (Ln = trivalent lanthanide) containing pdm2- or Hpdm- ligands (H2pdm = pyridine-2,6-dimethanol) and ancillary carboxylate groups (RCO2-), the present work reports the synthesis and study of three new members of a fifth family of such complexes. Compounds [Cu5Ln4O2(OMe)4(NO3)4(O2CCH2But)2(pdm)4(MeOH)2] (Ln = Dy, 1; Ln = Tb, 2; Ln = Ho, 3) were prepared from the reaction of Ln(NO3)3·xH2O (x = 5, 6), CuX2·yH2O (X = ClO4, Cl, NO3; y = 6, 2 and 3, respectively), H2pdm, ButCH2CO2H and Et3N (2 : 2.5 : 2 : 1 : 9) in MeCN/MeOH. Rather surprisingly, the copper(ii)/yttrium(iii) analogue has a slightly different composition, i.e. [Cu5Y4O2(OMe)4(NO3)2(O2CCH2But)4(pdm)4(MeOH)2] (4). The structures of 1·4MeCN·1.5MeOH and 4·2MeOH were solved by single-crystal X-ray crystallography. The five CuII and four DyIII centres in 1 are held together by two μ5-O2-, four μ-MeO-, two syn,synη1:η1:μ ButCH2CO2-, four η2:η1:η2:μ3 pdm2- (each of these groups chelates a CuII atom and simultaneously bridges two DyIII atoms through its two -CH2O- arms) and two μ-MeOH ligands. The four terminal nitrato groups each chelate (η1:η1) a DyIII centre. The five CuII atoms are co-planar (by symmetry) forming a bow-tie arrangement; the four outer CuII atoms form a rectangle with edges of 3.061(1) and 6.076(1) Å. The four DyIII centres also form a rectangle that lies above and below the plane of the CuII centres, with edges of 3.739(1) and 5.328(1) Å. The two strictly planar rectangles are almost perpendicular. Two trigonal bipyramidal μ5-O2- groups link the perpendicular Cu5 and Dy4 frameworks together. The molecule 4 has a very similar structure to that of 1, differences being the replacement of the two chelating nitrato groups of 1 by two chelating ButCH2CO2- ligands in 4 and the coordination polyhedra of the LnIII and YIII atoms (Snub diphenoids in 1 and biaugmented trigonal prisms in 4). Dc magnetic susceptibility data (χM) on analytically pure samples of 1-3, collected in the 300-2 K range, indicate that ferromagnetic exchange interactions dominate leading to large spin ground states. The χMT vs. T data for 4 suggest moderately strong antiferromagnetic CuIICuII exchange interactions. Studies of the dynamic magnetic properties of the {Cu5Ln4} clusters show that 1 behaves as a SMM at zero field and 2 is a very weak field-induced SMM, while 3 exhibits only weak tails in the χ''Mvs. T plots at various ac frequencies at zero dc field.
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Affiliation(s)
- Despina Dermitzaki
- Department of Chemistry, University of Patras, 26504 Patras, Greece. and Institute of Nanoscience and Nanotechnology, NCSR "Demokritos", 15310 Aghia Paraskevi Attikis, Greece
| | - 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 Química Inorgànica i Orgànica, Secció Inorgànica and Institut de Nanociència i Nanotecnologia (IN2UB), Universitat de Barcelona, Martí i Franquès 1-11, 08028-Barcelona, Spain
| | - Spyros P Perlepes
- Department of Chemistry, University of Patras, 26504 Patras, Greece. and Institute of Chemical Engineering Sciences, Foundation for Research and Technology - Hellas (FORTH/ICE - HT), Platani, P.O. Box 1414, 26504, Patras, Greece
| | - Julia Mayans
- Instituto de Ciencia Molecular (ICMol), Universidad de Valencia, Catedrático José Beltran 2, 46980 Paterna, Spain.
| | - Theocharis C Stamatatos
- Department of Chemistry, University of Patras, 26504 Patras, Greece. and Institute of Chemical Engineering Sciences, Foundation for Research and Technology - Hellas (FORTH/ICE - HT), Platani, P.O. Box 1414, 26504, Patras, Greece
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11
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Investigation of magneto-structural relation based on a series of mononuclear dysprosium single-ion magnets with high Oh symmetry. Inorganica Chim Acta 2020. [DOI: 10.1016/j.ica.2020.119451] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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12
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Zhao X, Li G, Ma J, Liu W. Two Octanuclear {Cu4Ln4} (Ln = Dy or Tb) Complexes with a Butterfly-Shaped Unit Exhibiting Zero-Field Single-Molecule Magnet Behavior. Inorg Chem 2020; 59:2328-2336. [DOI: 10.1021/acs.inorgchem.9b03137] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Xiaoxi Zhao
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province and State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Special Function Materials and Structure Design, Ministry of Education, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Ge Li
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province and State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Special Function Materials and Structure Design, Ministry of Education, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Jingjing Ma
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province and State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Special Function Materials and Structure Design, Ministry of Education, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Weisheng Liu
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province and State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Special Function Materials and Structure Design, Ministry of Education, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
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13
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Liu CM, Zhang DQ, Hao X, Zhu DB. Assembly of chiral 3d–4f wheel-like cluster complexes with achiral ligands: single-molecule magnetic behavior and magnetocaloric effect. Inorg Chem Front 2020. [DOI: 10.1039/d0qi00632g] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
With the help of perchlorate ions, chiral M3Ln3 wheel-like cluster complexes were constructed from achiral ligands, and showed single-molecule magnetic behavior and magnetocaloric effect.
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Affiliation(s)
- Cai-Ming Liu
- Beijing National Laboratory for Molecular Sciences
- Center for Molecular Science
- Key Laboratory of Organic Solids
- Institute of Chemistry
- Chinese Academy of Sciences
| | - De-Qing Zhang
- Beijing National Laboratory for Molecular Sciences
- Center for Molecular Science
- Key Laboratory of Organic Solids
- Institute of Chemistry
- Chinese Academy of Sciences
| | - Xiang Hao
- Beijing National Laboratory for Molecular Sciences
- Center for Molecular Science
- Key Laboratory of Organic Solids
- Institute of Chemistry
- Chinese Academy of Sciences
| | - Dao-Ben Zhu
- Beijing National Laboratory for Molecular Sciences
- Center for Molecular Science
- Key Laboratory of Organic Solids
- Institute of Chemistry
- Chinese Academy of Sciences
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14
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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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15
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Dey A, Acharya J, Chandrasekhar V. Heterometallic 3d–4f Complexes as Single‐Molecule Magnets. Chem Asian J 2019; 14:4433-4453. [DOI: 10.1002/asia.201900897] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Indexed: 11/10/2022]
Affiliation(s)
- Atanu Dey
- Tata Institute of Fundamental Research Hyderabad Gopanpally Hyderabad- 500107 India
| | - Joydev Acharya
- Department of ChemistryIndian Institute of Technology Kanpur Kanpur- 208016 India
| | - Vadapalli Chandrasekhar
- Tata Institute of Fundamental Research Hyderabad Gopanpally Hyderabad- 500107 India
- Department of ChemistryIndian Institute of Technology Kanpur Kanpur- 208016 India
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16
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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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17
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Peng Y, Mereacre V, Anson CE, Powell AK. Butterfly M 2 IIIEr 2 (M III = Fe and Al) SMMs: Synthesis, Characterization, and Magnetic Properties. ACS OMEGA 2018; 3:6360-6368. [PMID: 31458819 PMCID: PMC6644375 DOI: 10.1021/acsomega.8b00550] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/22/2018] [Accepted: 04/27/2018] [Indexed: 06/10/2023]
Abstract
The reaction of N-(2-pyridylmethyl)iminodiethanol (H2L, pmide), FeCl2·4H2O or AlCl3·6H2O with ErCl3·6H2O and p-Me-PhCO2H in the ratio of 2:1:1:4 in the presence of Et3N in MeOH and MeCN yielded compounds [Fe2Er2(μ3-OH)2(pmide)2(p-Me-PhCO2)6]·2MeCN (1) and [Al2Er2(μ3-OH)2(pmide)2(p-Me-PhCO2)6]·2MeCN (2). These two complexes are isostructural, possessing a planar butterfly motif with the ErIII ions in the wingtip positions. Both compounds show single molecule magnet (SMM) behavior. For the [Al2Er2] compound, the slow relaxation of the magnetization under zero applied direct current (dc) field does not show maxima, but the relaxation processes could be analyzed using an applied dc field of 1000 Oe. In-depth alternating current measurements under different dc fields on the [Fe2Er2] compound reveals that the Fe-Fe and Fe-Er interactions speed up the relaxation and decrease the energy barrier height of the SMM in comparison with the [Al2Er2] case.
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Affiliation(s)
- Yan Peng
- Institute
of Inorganic Chemistry, Karlsruhe Institute
of Technology, Engesserstrasse
15, 76131 Karlsruhe, Germany
- Institute
of Nanotechnology, Karlsruhe Institute of
Technology, Postfach
3640, 76021 Karlsruhe, Germany
| | - Valeriu Mereacre
- Institute
of Inorganic Chemistry, Karlsruhe Institute
of Technology, Engesserstrasse
15, 76131 Karlsruhe, Germany
| | - Christopher E. Anson
- Institute
of Inorganic Chemistry, Karlsruhe Institute
of Technology, Engesserstrasse
15, 76131 Karlsruhe, Germany
| | - Annie K. Powell
- Institute
of Inorganic Chemistry, Karlsruhe Institute
of Technology, Engesserstrasse
15, 76131 Karlsruhe, Germany
- Institute
of Nanotechnology, Karlsruhe Institute of
Technology, Postfach
3640, 76021 Karlsruhe, Germany
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18
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Nicolini A, Galavotti R, Barra AL, Borsari M, Caleffi M, Luo G, Novitchi G, Park K, Ranieri A, Rigamonti L, Roncaglia F, Train C, Cornia A. Filling the Gap in Extended Metal Atom Chains: Ferromagnetic Interactions in a Tetrairon(II) String Supported by Oligo-α-pyridylamido Ligands. Inorg Chem 2018; 57:5438-5448. [PMID: 29668273 DOI: 10.1021/acs.inorgchem.8b00405] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The stringlike complex [Fe4(tpda)3Cl2] (2; H2tpda = N2, N6-bis(pyridin-2-yl)pyridine-2,6-diamine) was obtained as the first homometallic extended metal atom chain based on iron(II) and oligo-α-pyridylamido ligands. The synthesis was performed under strictly anaerobic and anhydrous conditions using dimesityliron, [Fe2(Mes)4] (1; HMes = mesitylene), as both an iron source and a deprotonating agent for H2tpda. The four lined-up iron(II) ions in the structure of 2 (Fe···Fe = 2.94-2.99 Å, Fe···Fe···Fe = 171.7-168.8°) are wrapped by three doubly deprotonated twisted ligands, and the chain is capped at its termini by two chloride ions. The spectroscopic and electronic properties of 2 were investigated in dichloromethane by UV-vis-NIR absorption spectroscopy, 1H NMR spectroscopy, and cyclic voltammetry. The electrochemical measurements showed four fully resolved, quasi-reversible one-electron-redox processes, implying that 2 can adopt five oxidation states in a potential window of only 0.8 V. Direct current (dc) magnetic measurements indicate dominant ferromagnetic coupling at room temperature, although the ground state is only weakly magnetic. On the basis of density functional theory and angular overlap model calculations, this magnetic behavior was explained as being due to two pairs of ferromagnetically coupled iron(II) ions ( J = -21 cm-1 using JŜ i·Ŝ j convention) weakly antiferromagnetically coupled with each other. Alternating-current susceptibility data in the presence of a 2 kOe dc field and at frequencies up to 1.5 kHz revealed the onset of slow magnetic relaxation below 2.8 K, with the estimated energy barrier Ueff/ kB = 10.1(1.3) K.
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Affiliation(s)
- Alessio Nicolini
- Department of Chemical and Geological Sciences , University of Modena and Reggio Emilia & INSTM , I-41125 Modena , Italy.,Department of Physics, Informatics and Mathematics , University of Modena and Reggio Emilia , I-41125 Modena , Italy
| | - Rita Galavotti
- Department of Chemical and Geological Sciences , University of Modena and Reggio Emilia & INSTM , I-41125 Modena , Italy
| | - Anne-Laure Barra
- Laboratoire National des Champs Magnétiques Intenses-CNRS , Université Grenoble-Alpes , F-38042 Grenoble Cedex 9 , France
| | - Marco Borsari
- Department of Chemical and Geological Sciences , University of Modena and Reggio Emilia & INSTM , I-41125 Modena , Italy
| | - Matteo Caleffi
- Department of Chemical and Geological Sciences , University of Modena and Reggio Emilia & INSTM , I-41125 Modena , Italy
| | - Guangpu Luo
- Department of Physics , Virginia Tech , Blacksburg , Virginia 24061 , United States
| | - Ghenadie Novitchi
- Laboratoire National des Champs Magnétiques Intenses-CNRS , Université Grenoble-Alpes , F-38042 Grenoble Cedex 9 , France
| | - Kyungwha Park
- Department of Physics , Virginia Tech , Blacksburg , Virginia 24061 , United States
| | - Antonio Ranieri
- Department of Life Sciences , University of Modena and Reggio Emilia , I-41125 Modena , Italy
| | - Luca Rigamonti
- Department of Chemical and Geological Sciences , University of Modena and Reggio Emilia & INSTM , I-41125 Modena , Italy
| | - Fabrizio Roncaglia
- Department of Chemical and Geological Sciences , University of Modena and Reggio Emilia & INSTM , I-41125 Modena , Italy
| | - Cyrille Train
- Laboratoire National des Champs Magnétiques Intenses-CNRS , Université Grenoble-Alpes , F-38042 Grenoble Cedex 9 , France
| | - Andrea Cornia
- Department of Chemical and Geological Sciences , University of Modena and Reggio Emilia & INSTM , I-41125 Modena , Italy
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19
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Dey A, Das S, Palacios MA, Colacio E, Chandrasekhar V. Single-Molecule Magnet and Magnetothermal Properties of Two-Dimensional Polymers Containing Heterometallic [Cu5
Ln2
] (Ln = GdIII
and DyIII
) Motifs. Eur J Inorg Chem 2018. [DOI: 10.1002/ejic.201701429] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Atanu Dey
- Department of Chemistry; Indian Institute of Technology Kanpur; 208016 Kanpur India
- Tata Institute of Fundamental Research Hyderabad; 500107 Gopanpally, Hyderabad India
| | - Sourav Das
- Department of Chemistry; Indian Institute of Technology Kanpur; 208016 Kanpur India
- Department of Chemistry; Institute of Infrastructure Technology Research and Management; Near Khokhara Circle 380026 Maninagar East, Ahmedabad India
| | - María A. Palacios
- Departamento de Química Inorgánica; Facultad de Ciencias; Universidad de Granada; 18071 Granada Spain
| | - Enrique Colacio
- Departamento de Química Inorgánica; Facultad de Ciencias; Universidad de Granada; 18071 Granada Spain
| | - Vadapalli Chandrasekhar
- Department of Chemistry; Indian Institute of Technology Kanpur; 208016 Kanpur India
- Tata Institute of Fundamental Research Hyderabad; 500107 Gopanpally, Hyderabad India
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20
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Chen Z, Yin L, Mi X, Wang S, Cao F, Wang Z, Li Y, Lu J, Dou J. Field-induced slow magnetic relaxation of two 1-D compounds containing six-coordinated cobalt(ii) ions: influence of the coordination geometry. Inorg Chem Front 2018. [DOI: 10.1039/c8qi00388b] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two 1-D Co(ii) compounds with different coordination geometries of the same coordination sphere exhibited field-induced slow relaxation magnetization with different D values.
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Affiliation(s)
- Zhiwei Chen
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology
- School of Chemistry and Chemical Engineering
- Liaocheng University
- Liaocheng
- PR China
| | - Lei Yin
- Wuhan National High Magnetic Field Center & School of Physics
- Huazhong University of Science and Technology
- Wuhan
- P.R. China
| | - Xiuna Mi
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology
- School of Chemistry and Chemical Engineering
- Liaocheng University
- Liaocheng
- PR China
| | - Suna Wang
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology
- School of Chemistry and Chemical Engineering
- Liaocheng University
- Liaocheng
- PR China
| | - Fan Cao
- Qingdao University of Science & Technology
- College of Chemistry and Molecular Engineering
- Qingdao
- P. R. China
| | - Zhenxing Wang
- Wuhan National High Magnetic Field Center & School of Physics
- Huazhong University of Science and Technology
- Wuhan
- P.R. China
| | - Yunwu Li
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology
- School of Chemistry and Chemical Engineering
- Liaocheng University
- Liaocheng
- PR China
| | - Jing Lu
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology
- School of Chemistry and Chemical Engineering
- Liaocheng University
- Liaocheng
- PR China
| | - Jianmin Dou
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology
- School of Chemistry and Chemical Engineering
- Liaocheng University
- Liaocheng
- PR China
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21
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Lommens P, Tack P, Vander Elst L, Van Driessche I, Vincze L, Sinnaeve D. Spectroscopy as a tool to detect multinuclear Cu(ii)–triethanolamine complexes in aqueous solution. Dalton Trans 2018; 47:3755-3763. [DOI: 10.1039/c7dt04146b] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The Evans method, Extended X-ray Absorption Fine Structure (EXAFS) and NMR relaxation dispersion (NMRD) spectroscopy were used to prove the existence of multimeric Cu(ii)–triethanolamine species in aqueous solutions.
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Affiliation(s)
- Petra Lommens
- SCRiPTs
- Department of Chemistry
- Ghent University
- 9000 Ghent
- Belgium
| | - Pieter Tack
- XMI research group
- Department of Chemistry
- Ghent University
- 9000 Ghent
- Belgium
| | - Luce Vander Elst
- NMR and Molecular Imaging Laboratory
- Department of General
- Organic and Biomedical Chemistry
- Université de Mons
- 7000 Mons
| | | | - Laszlo Vincze
- XMI research group
- Department of Chemistry
- Ghent University
- 9000 Ghent
- Belgium
| | - Davy Sinnaeve
- NMR and Structure Analysis Unit
- Department of Organic and Macromolecular Chemistry
- Ghent University
- 9000 Ghent
- Belgium
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22
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Liu S, Li LL, Wang WZ, Han T, Gao HL, Cui JZ. Slow magnetic relaxation in a carboxylate-bridged Co II complex. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2017.08.110] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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23
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Heterometallic Heptanuclear [Cu 5Ln 2] (Ln = Tb, Dy, and Ho) Single-Molecule Magnets Organized in One-Dimensional Coordination Polymeric Network. Inorg Chem 2017; 56:14612-14623. [PMID: 29160702 DOI: 10.1021/acs.inorgchem.7b02450] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The reaction of a multisite coordination ligand, LH3, with Cu(II) salts and Ln(NO3)3·nH2O in a 1:2:1 stoichiometric ratio in the presence of triethylamine was found to afford a series of one-dimensional heterometallic [{Cu5Ln2(L)2(μ3-OH)4(ClO4)(NO3)3(OH2)5}(ClO4)2(H2O)x]∞ [Ln = Tb(1), Dy(2) and Ho(3), x = 4.25, 5.5, and 5 for 1-3, respectively] coordination polymers. Complexes 1-3 have been characterized by single crystal X-ray crystallography. The detailed study of the magnetic properties has also been performed and compared with the parent [Cu5Ln2] molecular analogues. The ac susceptibility measurements for complexes 1-3 confirm their SMM behavior with the following characteristics: Δeff/kB = 23.4 K, τ0 = 1.1 × 10-6 s and Δeff/kB = 27.9 K, τ0 = 6.6 × 10-7 s under 0 and 1200 Oe dc fields, respectively for 1; Δeff/kB = 8.3 K, τ0 = 3.1 × 10-6 s for 2 under 0 dc field. For 3, the fast QTM below 4 K prevents the estimation of the SMM energy barrier. Remarkably, the magnetic and SMM properties of the previously reported molecular [Cu5Ln2] analogues are preserved after their assembly in these coordination networks.
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24
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Zhang WY, Tian YM, Li HF, Chen P, Zhang YQ, Yan PF, Sun WB. Strictly linear trinuclear Dy-Ca/Mg-Dy single-molecule magnets: the impact of long-range f-f ferromagnetic interactions on suppressing quantum tunnelling of magnetization leading to slow magnetic relaxation. Dalton Trans 2017; 46:8259-8268. [PMID: 28613300 DOI: 10.1039/c7dt01395g] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The synthesis, structural characterization and magnetic properties of four heterometallic complexes with formulas Ln2M(OQ)8 [Ln(iii) = Dy, M(ii) = Ca (1), Mg (2); Ln(iii) = Er, M(ii) = Ca (3), Mg (4); HOQ = 8-hydroxyquinoline] are reported. Complexes display a perfectly linear arrangement of three metal ions involving two terminal Ln(iii) ions and one central alkaline earth M(ii) ion, and they are bridged by three phenolato oxygen atoms from three 8-hydroxyquinoline ligands. Direct-current (dc) magnetic susceptibility studies show that there exists a long-range ferromagnetic (FM) interaction between two f-electronic centers in Dy-based complexes 1 and 2 albeit they are separated by diamagnetic alkaline earth ions, and the FM interaction has been successfully reproduced by ab initio calculations. Alternating current (ac) magnetic susceptibility measurements indicate that complexes 1 and 2 exhibit significant single-molecule magnet (SMM) behaviors. This is mostly attributed to the parallel magnetic axes of individual Dy(iii) sites aligning closely to the Dy-M-Dy direction, and the linearly extending magnetic susceptibility tensors of each ion lead to the FM interaction. The dc and ac susceptibility studies of the intramolecularly diluted complexes reveal that the f-f coupling suppresses the QTMs significantly in the absence of the external magnetic field.
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Affiliation(s)
- Wan-Ying Zhang
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, Heilongjiang University, Harbin 150080, P. R. China.
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25
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Schmidt SFM, Koo C, Mereacre V, Park J, Heermann DW, Kataev V, Anson CE, Prodius D, Novitchi G, Klingeler R, Powell AK. A Three-Pronged Attack To Investigate the Electronic Structure of a Family of Ferromagnetic Fe 4Ln 2 Cyclic Coordination Clusters: A Combined Magnetic Susceptibility, High-Field/High-Frequency Electron Paramagnetic Resonance, and 57Fe Mössbauer Study. Inorg Chem 2017; 56:4796-4806. [PMID: 28186414 DOI: 10.1021/acs.inorgchem.6b02682] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We present the synthesis, structure, magnetic properties, as well as the Mössbauer and electron paramagnetic resonance studies of a ring-shaped [FeIII4LnIII2(Htea)4(μ-N3)4(N3)3(piv)3] (Ln = Y 1, Gd 2, Tb 3, Dy 4, Ho 5, Er, 6) coordination cluster. The Dy, Tb, and Ho analogues show blocking of the magnetization at low temperatures without applied fields. The anisotropy of the 3d ion and the exchange interaction between 3d and 4f ions in Fe4Ln2 complexes are unambiguously determined by high-field/high-frequency electron paramagnetic resonance measurements at low temperature. Ferromagnetic exchange interaction JFe-Ln is found which decreases upon variation of the Ln ions to larger atomic numbers. This dependence is similar to the behavior shown in the effective barrier values of complexes 3-5. Further information about the anisotropy of the Ln3+ ions was gathered with 57Fe Mössbauer spectroscopy, and the combination of these methods provides detailed information regarding the electronic structure of these complexes.
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Affiliation(s)
- Sebastian F M Schmidt
- Institut für Anorganische Chemie, Karlsruher Institut für Technologie , Engesserstrasse 15, 76131 Karlsruhe, Germany
| | | | - Valeriu Mereacre
- Institut für Anorganische Chemie, Karlsruher Institut für Technologie , Engesserstrasse 15, 76131 Karlsruhe, Germany
| | | | - Dieter W Heermann
- Institute for Theoretical Physics, Philosophenweg 16, Heidelberg University , 69120 Heidelberg, Germany
| | - Vladislav Kataev
- Leibniz Institute for Solid State and Materials Research , Helmholtzstrasse 20, IFW Dresden, 01069 Dresden, Germany
| | - Christopher E Anson
- Institut für Anorganische Chemie, Karlsruher Institut für Technologie , Engesserstrasse 15, 76131 Karlsruhe, Germany
| | - Denis Prodius
- Institute of Chemistry, Academy of Sciences of Moldova , Chisinau, Moldova
| | - Ghenadie Novitchi
- Laboratoire National des Champs Magnétiques Intenses, UPR CNRS 3228, Grenoble, France
| | | | - Annie K Powell
- Institut für Anorganische Chemie, Karlsruher Institut für Technologie , Engesserstrasse 15, 76131 Karlsruhe, Germany.,Karlsruhe Institute of Technology, Institute of Nanotechnology , Herrmann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
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26
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Li J, Wei RM, Pu TC, Cao F, Yang L, Han Y, Zhang YQ, Zuo JL, Song Y. Tuning quantum tunnelling of magnetization through 3d–4f magnetic interactions: an alternative approach for manipulating single-molecule magnetism. Inorg Chem Front 2017. [DOI: 10.1039/c6qi00407e] [Citation(s) in RCA: 64] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The quantum tunnelling of magnetization was observed in [Zn2Dy2], contrarily it was quenched in [Mn2Dy2] and [Co2Dy2] by spin–spin exchange.
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Affiliation(s)
- Jing Li
- State Key Laboratory of Coordination Chemistry
- Collaborative Innovation Center of Advanced Microstructures
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210023
| | - Rong-Min Wei
- State Key Laboratory of Coordination Chemistry
- Collaborative Innovation Center of Advanced Microstructures
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210023
| | - Tian-Cheng Pu
- Material Science and Chemical Engineering Department
- Stony Brook University
- Stony Brook
- 11794 USA
| | - Fan Cao
- State Key Laboratory of Coordination Chemistry
- Collaborative Innovation Center of Advanced Microstructures
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210023
| | - Li Yang
- State Key Laboratory of Coordination Chemistry
- Collaborative Innovation Center of Advanced Microstructures
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210023
| | - Yuan Han
- State Key Laboratory of Coordination Chemistry
- Collaborative Innovation Center of Advanced Microstructures
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210023
| | - Yi-Quan Zhang
- Jiangsu Key Laboratory for NSLSCS
- School of Physical Science and Technology Department
- Nanjing Normal University
- Nanjing 210046
- P. R. China
| | - Jing-Lin Zuo
- State Key Laboratory of Coordination Chemistry
- Collaborative Innovation Center of Advanced Microstructures
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210023
| | - You Song
- State Key Laboratory of Coordination Chemistry
- Collaborative Innovation Center of Advanced Microstructures
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210023
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27
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Deng XW, Cai LZ, Zhu ZX, Gao F, Zhou YL, Yao MX. Synthesis, structures and magnetic properties of chiral 3d–3d′–4f heterotrimetallic complexes based on [(Tp*)Fe(CN)3]−. NEW J CHEM 2017. [DOI: 10.1039/c7nj01413a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A series of chiral cyano- and phenolate-bridged heterotrimetallic compounds have been obtained. The Dy and Tb derivatives exhibit similar single-molecule magnetic behaviors under a 1000 Oe dc field.
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Affiliation(s)
- Xiao-Wei Deng
- College of Chemistry & Molecular Engineering
- Nanjing Tech University
- Nanjing
- P. R. China
| | - Li-Zheng Cai
- College of Chemistry & Molecular Engineering
- Nanjing Tech University
- Nanjing
- P. R. China
| | - Zhao-Xia Zhu
- College of Chemistry & Molecular Engineering
- Nanjing Tech University
- Nanjing
- P. R. China
| | - Feng Gao
- School of Chemistry and Materials Science
- Jiangsu Normal University
- Xuzhou
- P. R. China
| | - Yan-Ling Zhou
- School of Chemistry and Chemical Engineering
- Guangxi University
- Nanning
- P. R. China
| | - Min-Xia Yao
- College of Chemistry & Molecular Engineering
- Nanjing Tech University
- Nanjing
- P. R. China
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28
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Wang HS, Yang FJ, Long QQ, Huang ZY, Chen W, Pan ZQ. Syntheses, crystal structures, and magnetic properties of a family of heterometallic octanuclear [Cu6Ln2] (Ln = Dy(iii), Tb(iii), Ho(iii), Er(iii), and Gd(iii)) complexes. NEW J CHEM 2017. [DOI: 10.1039/c7nj00459a] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Five novel [Cu6Ln2] complexes were synthesized, wherein LnIII ions are seven-coordinate and coordinated by one triethanolamine and three di-2-pyridyl ketone ligands, without coordinated solvent molecules and small anions.
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Affiliation(s)
- Hui-Sheng Wang
- School of Chemistry and Environmental Engineering
- Key Laboratory of Green Chemical Process of Ministry of Education
- Key Laboratory of Novel Reactor and Green Chemical Technology of Hubei Province
- Wuhan Institute of Technology
- Wuhan 430074
| | - Feng-Jun Yang
- School of Chemistry and Environmental Engineering
- Key Laboratory of Green Chemical Process of Ministry of Education
- Key Laboratory of Novel Reactor and Green Chemical Technology of Hubei Province
- Wuhan Institute of Technology
- Wuhan 430074
| | - Qiao-Qiao Long
- School of Chemistry and Environmental Engineering
- Key Laboratory of Green Chemical Process of Ministry of Education
- Key Laboratory of Novel Reactor and Green Chemical Technology of Hubei Province
- Wuhan Institute of Technology
- Wuhan 430074
| | - Zhi-Yong Huang
- School of Chemistry and Environmental Engineering
- Key Laboratory of Green Chemical Process of Ministry of Education
- Key Laboratory of Novel Reactor and Green Chemical Technology of Hubei Province
- Wuhan Institute of Technology
- Wuhan 430074
| | - Wei Chen
- School of Chemistry and Environmental Engineering
- Key Laboratory of Green Chemical Process of Ministry of Education
- Key Laboratory of Novel Reactor and Green Chemical Technology of Hubei Province
- Wuhan Institute of Technology
- Wuhan 430074
| | - Zhi-Quan Pan
- School of Chemistry and Environmental Engineering
- Key Laboratory of Green Chemical Process of Ministry of Education
- Key Laboratory of Novel Reactor and Green Chemical Technology of Hubei Province
- Wuhan Institute of Technology
- Wuhan 430074
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29
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Biswas S, Das S, Gupta T, Singh SK, Pissas M, Rajaraman G, Chandrasekhar V. Observation of Slow Relaxation and Single-Molecule Toroidal Behavior in a Family of Butterfly-Shaped Ln4Complexes. Chemistry 2016; 22:18532-18550. [DOI: 10.1002/chem.201603640] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2016] [Indexed: 12/11/2022]
Affiliation(s)
- Sourav Biswas
- Department of Chemistry; Indian Institute of Technology Kanpur; Kanpur 208016 India
| | - Sourav Das
- Department Of Chemistry; Institute of Infrastructure Technology Research and Management; Near Khokhara Circle, Maninagar East Ahmedabad 380026 India
| | - Tulika Gupta
- Department of Chemistry; Indian Institute of Technology Bombay; Powai Mumbai 400076 India
| | - Saurabh Kumar Singh
- Department of Molecular Theory and Spectroscopy; Max-Planck Institute for Chemical Energy Conversion; Stiftstr 34-36 45470 Mülheim an der Ruhr Germany
| | - Michael Pissas
- Institute of Advanced Materials, Physicochemical Processes, Nanotechnology and Microsystems; NCSR Demokritos; 15310 Ag. Paraskevi Attiki Greece
| | - Gopalan Rajaraman
- Department of Chemistry; Indian Institute of Technology Bombay; Powai Mumbai 400076 India
| | - Vadapalli Chandrasekhar
- Department of Chemistry; Indian Institute of Technology Kanpur; Kanpur 208016 India
- National Institute of Science Education and Research; Institute of Physics Campus, Sachivalaya Marg, PO: Sainik School; Bhubaneswar 751 005, Orissa India
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30
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Gupta T, Beg MF, Rajaraman G. Role of Single-Ion Anisotropy and Magnetic Exchange Interactions in Suppressing Zero-Field Tunnelling in {3d-4f} Single Molecule Magnets. Inorg Chem 2016; 55:11201-11215. [DOI: 10.1021/acs.inorgchem.6b01831] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Tulika Gupta
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai 400076, India
| | - Mohammad Faizan Beg
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai 400076, India
| | - Gopalan Rajaraman
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai 400076, India
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31
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Wu J, Zhao L, Zhang L, Li XL, Guo M, Tang J. Metallosupramolecular Coordination Complexes: The Design of Heterometallic 3d–4f Gridlike Structures. Inorg Chem 2016; 55:5514-9. [DOI: 10.1021/acs.inorgchem.6b00529] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jianfeng Wu
- State Key Laboratory
of Rare Earth Resource Utilization, Changchun Institute of Applied
Chemistry, Chinese Academy of Sciences, Changchun 130022, People’s Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
| | - Lang Zhao
- State Key Laboratory
of Rare Earth Resource Utilization, Changchun Institute of Applied
Chemistry, Chinese Academy of Sciences, Changchun 130022, People’s Republic of China
| | - Li Zhang
- State Key Laboratory
of Rare Earth Resource Utilization, Changchun Institute of Applied
Chemistry, Chinese Academy of Sciences, Changchun 130022, People’s Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
| | - Xiao-Lei Li
- State Key Laboratory
of Rare Earth Resource Utilization, Changchun Institute of Applied
Chemistry, Chinese Academy of Sciences, Changchun 130022, People’s Republic of China
| | - Mei Guo
- State Key Laboratory
of Rare Earth Resource Utilization, Changchun Institute of Applied
Chemistry, Chinese Academy of Sciences, Changchun 130022, People’s Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
| | - Jinkui Tang
- State Key Laboratory
of Rare Earth Resource Utilization, Changchun Institute of Applied
Chemistry, Chinese Academy of Sciences, Changchun 130022, People’s Republic of China
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32
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Ashurov JM. Crystal structure of the salt bis-(tri-ethano-lamine-κ(4) N,O,O',O'')cadmium bis[2-(2-oxo-2,3-di-hydro-1,3-benzo-thia-zol-3-yl)acetate]. Acta Crystallogr E Crystallogr Commun 2016; 72:526-9. [PMID: 27375881 PMCID: PMC4910351 DOI: 10.1107/s2056989016004515] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2016] [Accepted: 03/16/2016] [Indexed: 11/10/2022]
Abstract
The reaction of 2-(2-oxo-2,3-di-hydro-1,3-benzo-thia-zol-3-yl)acetic acid (NBTA) and tri-ethano-lamine (TEA) with Cd(CH3OO)2 resulted in the formation of the title salt, [Cd(C6H15NO3)2](C9H6NO3S)2. In its crystal structure, the complex cation [Cd(TEA)2](2+) and two independent NBTA(-) units with essentially similar geometries and conformations are present. In the complex cation, each TEA mol-ecule behaves as an N,O,O',O''-tetra-dentate ligand, giving rise to an eight-coordinate Cd(II) ion with a bicapped trigonal-prismatic configuration. All ethanol groups of each TEA mol-ecule form three five-membered chelate rings around the Cd(II) ion. The Cd-O and Cd-N distances are in the ranges 2.392 (2)-2.478 (2) and 2.465 (2)-2.475 (3) Å, respectively. O-H⋯O hydrogen bonds between the TEA hy-droxy groups and carboxyl-ate O atoms connect cationic and anionic moieties into chains parallel to [110]. Each NBTA(-) anion is additionally linked to a symmetry-related anion through π-π stacking inter-actions between the benzene and thia-zoline rings [minimum centroid-to-centroid separation = 3.604 (2) Å]. Together with additional C-H⋯O inter-actions, these establish a double-layer polymeric network parallel to (001).
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Affiliation(s)
- Jamshid Mengnorovich Ashurov
- Institute of Bioorganic Chemistry, Academy of Sciences of Uzbekistan, M. Ulugbek Str. 83, Tashkent 700125, Uzbekistan
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33
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Zhang J, Li C, Wang J, Zhu M, Li L. Slow Magnetic Relaxation Behavior in Rare Ln–Cu–Ln Linear Trinuclear Complexes. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201501388] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Junqing Zhang
- Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry and Tianjin Key Laboratory of Metal and Molecule‐Based Material Chemistry, Nankai University, Tianjin 300071, China, http://chem.nankai.edu.cn/
| | - Cun Li
- Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry and Tianjin Key Laboratory of Metal and Molecule‐Based Material Chemistry, Nankai University, Tianjin 300071, China, http://chem.nankai.edu.cn/
| | - Juanjuan Wang
- Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry and Tianjin Key Laboratory of Metal and Molecule‐Based Material Chemistry, Nankai University, Tianjin 300071, China, http://chem.nankai.edu.cn/
| | - Mei Zhu
- Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry and Tianjin Key Laboratory of Metal and Molecule‐Based Material Chemistry, Nankai University, Tianjin 300071, China, http://chem.nankai.edu.cn/
| | - Licun Li
- Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry and Tianjin Key Laboratory of Metal and Molecule‐Based Material Chemistry, Nankai University, Tianjin 300071, China, http://chem.nankai.edu.cn/
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34
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Baca SG, van Leusen J, Speldrich M, Kögerler P. Understanding the magnetism of {Fe2Ln} dimers, step-by-step. Inorg Chem Front 2016. [DOI: 10.1039/c6qi00095a] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A hierarchical, comparative approach to the complex magnetochemistry of {Fe4M2}-type coordination clusters (M = Y, Eu, Gd, Dy) allows determination of intramolecular exchange energies.
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Affiliation(s)
- S. G. Baca
- Institute of Applied Physics
- Academy of Sciences of Moldova
- Chisinau
- Moldova
- Institute of Inorganic Chemistry
| | - J. van Leusen
- Institute of Inorganic Chemistry
- RWTH Aachen University
- D-52074 Aachen
- Germany
| | - M. Speldrich
- Institute of Inorganic Chemistry
- RWTH Aachen University
- D-52074 Aachen
- Germany
| | - P. Kögerler
- Institute of Inorganic Chemistry
- RWTH Aachen University
- D-52074 Aachen
- Germany
- Peter Grünberg Institute
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35
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Zheng XY, Kong XJ, Long LS. Synthesis and Structures of Lanthanide–Transition Metal Clusters. RECENT DEVELOPMENT IN CLUSTERS OF RARE EARTHS AND ACTINIDES: CHEMISTRY AND MATERIALS 2016. [DOI: 10.1007/430_2016_6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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36
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Yang M, Sun J, Guo J, Sun G, Li L. Cu–Ln compounds based on nitronyl nitroxide radicals: synthesis, structure, and magnetic and fluorescence properties. CrystEngComm 2016. [DOI: 10.1039/c6ce02049f] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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37
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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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38
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Modak R, Sikdar Y, Cosquer G, Chatterjee S, Yamashita M, Goswami S. Heterometallic CuII–DyIII Clusters of Different Nuclearities with Slow Magnetic Relaxation. Inorg Chem 2015; 55:691-9. [DOI: 10.1021/acs.inorgchem.5b02107] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ritwik Modak
- Department
of Chemistry, University of Calcutta, 92, A. P. C. Road, Kolkata 700009, India
| | - Yeasin Sikdar
- Department
of Chemistry, University of Calcutta, 92, A. P. C. Road, Kolkata 700009, India
| | - Goulven Cosquer
- Department
of Chemistry, Graduate School of Science, Tohoku University, 6-3,
Aramaki-Aza-Aoba, Aoba-ku, 980-8578 Sendai, Japan
- Core
Research for Evolutional Science and Technology (CREST), Japan Science and Technology (JST), 4-1-8 Kawaguchi, Saitama 332-0012, Japan
| | - Sudipta Chatterjee
- Department
of Chemistry, Serampore College, Serampore, Hoogly 712
201, India
| | - Masahiro Yamashita
- Department
of Chemistry, Graduate School of Science, Tohoku University, 6-3,
Aramaki-Aza-Aoba, Aoba-ku, 980-8578 Sendai, Japan
- Core
Research for Evolutional Science and Technology (CREST), Japan Science and Technology (JST), 4-1-8 Kawaguchi, Saitama 332-0012, Japan
| | - Sanchita Goswami
- Department
of Chemistry, University of Calcutta, 92, A. P. C. Road, Kolkata 700009, India
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39
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Wang X, Li C, Sun J, Li L. Nitronyl nitroxide based 2p-3d-4f chains with the magnetocaloric effect and slow magnetic relaxation. Dalton Trans 2015; 44:18411-7. [PMID: 26434633 DOI: 10.1039/c5dt02783g] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Four new nitronyl nitroxide radical based hetero-tri-spin one-dimensional compounds, namely [{Ln(hfac)3}3{Cu(hfac)2}{NIT-Ph(OMe)2}4]n (Ln = Gd (1), Tb (2), Dy (3), Er (4); hfac = hexafluoroacetylacetonate; NIT-Ph(OMe)2 = 2-(2',4'-dimethoxyphenyl)-4,4,5,5-tetramethyl-imidazolyl-1-oxyl-3-oxide) have been successfully prepared. Single crystal X-ray crystallographic analysis reveals that complexes 1-4 possess a 1D chain structure with a repeating [Cu-Rad-Ln-Rad-Ln-Rad-Ln-Rad] moiety in which Ln(hfac)3 and Cu(hfac)2 units are bridged by nitronyl nitroxide radicals through the NO groups. DC magnetic studies found that ferromagnetic interactions between metals and the coordinated NO groups are active in all four compounds. The Tb derivative displays frequency dependent ac magnetic susceptibilities, indicating slow magnetic relaxation behavior. The Gd complex shows an important cryogenic magnetocaloric effect with the entropy change (-ΔSm) of 13.5 J kg(-1) K(-1) at 2 K and a magnetic field of 7 T, representing the first example of Gd-radical molecular species exhibiting the magnetocaloric effect.
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Affiliation(s)
- Xiufeng Wang
- Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry and Tianjin Key Laboratory of Metal and Molecule-based Material Chemistry, Nankai University, Tianjin 300071, China.
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40
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A versatile ethanolamine-derived trifluoromethyl enaminone ligand for the elaboration of nickel(II) and copper(II)–dysprosium(III) multinuclear complexes with magnetic properties. J Fluor Chem 2015. [DOI: 10.1016/j.jfluchem.2015.06.023] [Citation(s) in RCA: 16] [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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41
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Han SD, Wang QL, Xu J, Bu XH. Anion-Triggered Modulation of Structure and Magnetic Properties of Copper(I)-Dysprosium(III) Complexes Derived from 1-Hydroxybenzotriazolate. Eur J Inorg Chem 2015. [DOI: 10.1002/ejic.201500799] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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42
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Maity M, Majee MC, Kundu S, Samanta SK, Sañudo EC, Ghosh S, Chaudhury M. Pentanuclear 3d–4f Heterometal Complexes of MII3LnIII2 (M = Ni, Cu, Zn and Ln = Nd, Gd, Tb) Combinations: Syntheses, Structures, Magnetism, and Photoluminescence Properties. Inorg Chem 2015; 54:9715-26. [DOI: 10.1021/acs.inorgchem.5b01142] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Manoranjan Maity
- Department of Inorganic Chemistry, Indian Association for the Cultivation of Science, Kolkata 700 032, India
| | - Mithun Chandra Majee
- Department of Inorganic Chemistry, Indian Association for the Cultivation of Science, Kolkata 700 032, India
| | - Sanchita Kundu
- Department of Inorganic Chemistry, Indian Association for the Cultivation of Science, Kolkata 700 032, India
| | - Swarna Kamal Samanta
- Department of Chemistry, Presidency University, 86/1 College Street, Kolkata 700 073, India
| | - E. Carolina Sañudo
- Departament de Quimica
Inorgànica i Institut de Nanociència i Nanotecnologia, Universitat de Barcelona, Diagonal 645, 08028 Barcelona, Spain
| | - Sanjib Ghosh
- Department of Chemistry, Presidency University, 86/1 College Street, Kolkata 700 073, India
| | - Muktimoy Chaudhury
- Department of Inorganic Chemistry, Indian Association for the Cultivation of Science, Kolkata 700 032, India
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43
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Synthesis, structure, and magnetic properties of heterometallic {Zn2Ln2} (Ln=Tb, Dy, Ho) compounds with parallelogram-like cores. Inorganica Chim Acta 2015. [DOI: 10.1016/j.ica.2015.07.026] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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44
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Singh SK, Gupta T, Ungur L, Rajaraman G. Magnetic Relaxation in Single-Electron Single-Ion Cerium(III) Magnets: Insights from Ab Initio Calculations. Chemistry 2015; 21:13812-9. [DOI: 10.1002/chem.201501330] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2015] [Indexed: 11/06/2022]
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45
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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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46
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Zangana KH, Pineda EM, Vitorica-Yrezabal IJ, McInnes EJL, Winpenny REP. Linking Cr₃ triangles through phosphonates and lanthanides: synthetic, structural, magnetic and EPR studies. Dalton Trans 2015; 43:13242-9. [PMID: 25072781 DOI: 10.1039/c4dt01264j] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The preparation and structural characterisation of five 3d-4f mixed metal phosphonate cages with general formula [Cr(III)6Ln(III)2(μ3-O)2(H2O)2(O3P(t)Bu)4(O2C(t)Bu)12(HO(i)Bu)2((i)PrNH2)2] where Ln(III) = La, 1; Tb, 3; Dy, 4; Ho, 5 and [Cr(III)6Gd(III)2(μ3-O)2(H2O)2(O3P(t)Bu)4(O2C(t)Bu)12(HO(i)Bu)4] (2) are reported. The structure contains two oxo-centred {Cr3} triangles, bridged by phosphonates and lanthanides. The magnetic behaviour of 1 has been modelled as two non-interacting isosceles triangles, involving two antiferromagnetic interactions (J1 = -8.8 cm(-1)) with a smaller ferromagnetic interaction for the unique edge of the triangle (J2 = +1.3 cm(-1)) giving an isolated S = 3/2 ground state per triangle. The quartet ground state has been proven through simulation of electron paramagnetic resonance (EPR) spectra obtained at the X- and Q-band. EPR simulations have also resulted in the introduction of small single-ion Zero Field Splitting (ZFS) parameters D = ±0.19 cm(-1) and rhombic term E = ±0.02 cm(-1), which are consistent with strong exchange limit calculations for an isolated S = 3/2 (D = ±0.22 and E = ±0.018 cm(-1)).
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Affiliation(s)
- Karzan H Zangana
- School of Chemistry and Photon Science Institute, The University of Manchester, Oxford Road, Manchester M13 9PL, UK.
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47
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Toward heterometallic single-molecule magnets: Synthetic strategy, structures and properties of 3d–4f discrete complexes. Coord Chem Rev 2015. [DOI: 10.1016/j.ccr.2014.10.004] [Citation(s) in RCA: 402] [Impact Index Per Article: 44.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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48
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Ke H, Zhu W, Zhang S, Xie G, Chen S. A new family of heterometallic tetranuclear [MnIII2LnIII2] (Ln = Eu, Gd, Tb, Dy) isostructural clusters: Syntheses, crystal structures and magnetic properties. Polyhedron 2015. [DOI: 10.1016/j.poly.2014.10.030] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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49
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Rajeshkumar T, Annadata HV, Evangelisti M, Langley SK, Chilton NF, Murray KS, Rajaraman G. Theoretical Studies on Polynuclear {CuII5GdIIIn} Clusters (n = 4, 2): Towards Understanding Their Large Magnetocaloric Effect. Inorg Chem 2015; 54:1661-70. [DOI: 10.1021/ic502651w] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Thayalan Rajeshkumar
- Department
of Chemistry, Indian Institute of Technology Bombay, Powai, Mumabi 400076, India
| | - Harshini V. Annadata
- Department
of Chemistry, Indian Institute of Technology Bombay, Powai, Mumabi 400076, India
| | - Marco Evangelisti
- Instituto de Ciencia
de Materiales de Aragón and Departamento de Física de
la Materia Condensada, CSIC-Universidad de Zaragoza, 50009 Zaragoza, Spain
| | - Stuart K. Langley
- School of Chemistry, Monash University, Clayton, Victoria 3800, Australia
| | - Nicholas F. Chilton
- School of Chemistry, Monash University, Clayton, Victoria 3800, Australia
- School of Chemistry, The University of Manchester, Manchester M13 9PL, United Kingdom
| | - Keith S. Murray
- School of Chemistry, Monash University, Clayton, Victoria 3800, Australia
| | - Gopalan Rajaraman
- Department
of Chemistry, Indian Institute of Technology Bombay, Powai, Mumabi 400076, India
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50
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Nesterova OV, Chygorin EN, Kokozay VN, Omelchenko IV, Shishkin OV, Boča R, Pombeiro AJL. A self-assembled octanuclear complex bearing the uncommon close-packed {Fe4Mn4(μ4-O)4(μ-O)4} molecular core. Dalton Trans 2015. [DOI: 10.1039/c5dt02076j] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An Fe/Mn Schiff base complex with an unprecedented metal core type for a heterometallic compound, has been prepared by the one-pot direct synthesis method and magnetostructurally characterized.
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Affiliation(s)
- Oksana V. Nesterova
- Centro de Química Estrutural
- Instituto Superior Técnico
- Universidade de Lisboa
- 1049-001 Lisboa
- Portugal
| | - Eduard N. Chygorin
- Department of Inorganic Chemistry
- Taras Shevchenko National University of Kyiv
- Kyiv 01601
- Ukraine
| | - Vladimir N. Kokozay
- Department of Inorganic Chemistry
- Taras Shevchenko National University of Kyiv
- Kyiv 01601
- Ukraine
| | - Irina V. Omelchenko
- STC “Institute for Single Crystals” National Academy of Sciences of Ukraine
- Kharkiv 61001
- Ukraine
| | - Oleg V. Shishkin
- STC “Institute for Single Crystals” National Academy of Sciences of Ukraine
- Kharkiv 61001
- Ukraine
| | - Roman Boča
- Department of Chemistry
- FPV
- University of SS Cyril and Methodius
- 91701 Trnava
- Slovakia
| | - Armando J. L. Pombeiro
- Centro de Química Estrutural
- Instituto Superior Técnico
- Universidade de Lisboa
- 1049-001 Lisboa
- Portugal
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