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Sanchis-Perucho A, Orts-Arroyo M, Castro I, Lloret F, Martínez-Lillo J. Crystal polymorphism in 2,2'-bipyrimidine-based iridium(III) complexes. J COORD CHEM 2022. [DOI: 10.1080/00958972.2022.2117036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Affiliation(s)
- Adrián Sanchis-Perucho
- Instituto de Ciencia Molecular (ICMol)/Departament de Química Inorgànica, Universitat de València, Paterna, València, Spain
| | - Marta Orts-Arroyo
- Instituto de Ciencia Molecular (ICMol)/Departament de Química Inorgànica, Universitat de València, Paterna, València, Spain
| | - Isabel Castro
- Instituto de Ciencia Molecular (ICMol)/Departament de Química Inorgànica, Universitat de València, Paterna, València, Spain
| | - Francesc Lloret
- Instituto de Ciencia Molecular (ICMol)/Departament de Química Inorgànica, Universitat de València, Paterna, València, Spain
| | - José Martínez-Lillo
- Instituto de Ciencia Molecular (ICMol)/Departament de Química Inorgànica, Universitat de València, Paterna, València, Spain
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2
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Pachisia S, Gupta R. Tailored Inorganic-Organic Architectures via Metalloligands. CHEM REC 2022; 22:e202200121. [PMID: 35758543 DOI: 10.1002/tcr.202200121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2022] [Revised: 06/07/2022] [Indexed: 11/08/2022]
Abstract
This article discusses the design principles and strategies and the structural outcome of various supramolecular architectures constructed by utilizing well-defined coordination complexes as the metalloligands. We have included selected examples of metalloligands, offering either pyridyl or arylcarboxylic acid groups as the appended functional groups, for illustrating the construction of their supramolecular architectures. Both geometrical position and the number of the appended functional groups emerging from a metalloligand were found to critically regulate the structural aspects and dimensionality of the resultant material. The article concludes by delineating the structure-directing lessions as well as the potential applications of the metalloligand-based supramolecular architectures for the generation of next-level materials.
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Affiliation(s)
- Sanya Pachisia
- Department of Chemistry, University of Delhi, Delhi, 110007, India
| | - Rajeev Gupta
- Department of Chemistry, University of Delhi, Delhi, 110007, India
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3
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Sanchis-Perucho A, Martínez-Lillo J. A new family of one-dimensional bromo-bridged Ir(IV)-Cu(II) complexes based on the hexabromoiridate(IV) metalloligand. Dalton Trans 2022; 51:3323-3330. [PMID: 35133370 DOI: 10.1039/d1dt04384f] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
By using the iridium(IV) complex (NBu4)2[IrBr6] (1) as a metalloligand towards a Cu(II) metal ion, three novel Ir(IV) one-dimensional (1D) compounds of formula {IrBr5(μ-Br)Cu(Meim)4}n (2), {IrBr5(μ-Br)Cu(Viim)4}n (3) and {IrBr5(μ-Br)Cu(Buim)4}n (4), [Meim = 1-methylimidazole; Viim = 1-vinylimidazole; Buim = 1-butylimidazole] have been prepared and structurally and magnetically characterised. Compounds 2, 3 and 4 crystallise in the triclinic, monoclinic and orthorhombic crystal systems with space groups P1̄, C2/c and Pccn, respectively. Each Ir(IV) ion in 1-4 is six-coordinate and bonded to six bromide ions in a quasi regular octahedral geometry. In compounds 2-4, the CuII ion shows an axially elongated octahedron with four N atoms, from four monodentate imidazole derivative ligands, that form the equatorial plane and two bromide ions that occupy the axial positions. Cu(II) and Ir(IV) ions are linked through bridging bromide anions generating Ir(IV)-Cu(II) chains [with intrachain Cu(II)⋯Ir(IV) distances covering the range of ca. 5.10-5.42 Å]. In the crystal lattice of 2 and 3 are observed significant intermolecular Ir-Br⋯Br-Ir contacts and π⋯Br interactions, which organize arrangements that contribute to stabilizing the crystal structure of these Ir(IV)-based compounds. DC magnetic susceptibility measurements reveal that 1 displays magnetic behaviour typical of noninteracting mononuclear centres with S = 1/2. Besides, antiferromagnetic behaviour (2 and 3) and ferromagnetic (4) exchange coupling occur between the Cu(II) and Ir(IV) metal ions in the one-dimensional bromo-bridged compounds 2-4. Moreover, the study of the AC magnetic susceptibility shows a field-induced slow relaxation of the magnetisation for 1, indicating the presence of the single-ion magnet (SIM) phenomenon for the magnetically isolated hexabromoiridate(IV) complex.
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Affiliation(s)
- Adrián Sanchis-Perucho
- Instituto de Ciencia Molecular (ICMol)/Departament de Química Inorgànica, Universitat de València, C/Catedrático José Beltrán 2, 46980, Paterna, Valencia, Spain.
| | - José Martínez-Lillo
- Instituto de Ciencia Molecular (ICMol)/Departament de Química Inorgànica, Universitat de València, C/Catedrático José Beltrán 2, 46980, Paterna, Valencia, Spain.
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4
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Brechin EK, Singh M, Etcheverry-Berríos A, Vallejo J, Sanz S, Martínez-Lillo J, Nichol GS, Lusby P. Guest-induced magnetic exchange in paramagnetic [M 2L 4] 4+ coordination cages. Dalton Trans 2022; 51:8377-8381. [DOI: 10.1039/d2dt01385a] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Paramagnetic complexes that show magnetically switchable properties show promise in a number of applications. A significantly underdeveloped approach is the use of metallocages, whose magnetic properties can be modulated through...
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Peng M, Wu XF, Wang LX, Chen SH, Xiang J, Jin XX, Yiu SM, Wang BW, Gao S, Lau TC. Slow magnetic relaxation in high-coordinate Co(II) and Fe(II) compounds bearing neutral tetradentate ligands. Dalton Trans 2021; 50:15327-15335. [PMID: 34636819 DOI: 10.1039/d1dt02575a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The first-row transition metal compounds, [MII(L1)2](ClO4)2 (M = Ni (1); Co (2)), have been prepared by treatment of a neutral tetradentate ligand (L1 = N2,N9-dibutyl-1,10-phenanthroline-2,9-dicarboxamide) with metal perchlorate salts in MeOH. Both compounds have been structurally characterized by X-ray crystallography and it was found that the coordination numbers are 6 and 7, respectively. The reaction of 6,6'-bis(2-tbutyl-tetrazol-5-yl)-2,2'-bipyridine (L2) with hydrated FeII(ClO4)2 afforded a 8-coordinate Fe(II) compound, [FeII(L2)2](ClO4)2 (3); however its reaction with hydrated CoII(ClO4)2 resulted in 6-coordinate [CoII(L2)2](ClO4)2. It is interesting to observe field-induced slow magnetic relaxation in the 7-coordinate Co(II) compound 2 and 8-coordinate Fe(II) compound 3, which further supports the validity of designing high coordination number compounds as single-molecule magnets. Direct current magnetic studies demonstrate that 2 has a very large positive D value (56.2 cm-1) and a small E value (0.66 cm-1), indicating easy plane magnetic anisotropy. Consistent with the larger D value, an effective spin-reversal barrier of Ueff = 100 K (71.4 cm-1) is obtained, which is the highest value reported for 7-coordinate Co(II) complexes with a pentagonal bipyramidal geometry. In contrast, 8-coordinate Fe(II) compound 3 exhibits uniaxial magnetic anisotropy.
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Affiliation(s)
- Min Peng
- College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou 434020, HuBei, P. R. China.
| | - Xiao-Fan Wu
- State Key Laboratory of Rare Earth Materials Chemistry and Applications and PKU-HKU Joint Laboratory on Rare Earth Materials and Bioinorganic Chemistry, Peking University, Beijing 100871, P. R. China.
| | - Li-Xin Wang
- College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou 434020, HuBei, P. R. China.
| | - Si-Huai Chen
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430073, P. R. China
| | - Jing Xiang
- College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou 434020, HuBei, P. R. China.
| | - Xin-Xin Jin
- State Key Laboratory of Rare Earth Materials Chemistry and Applications and PKU-HKU Joint Laboratory on Rare Earth Materials and Bioinorganic Chemistry, Peking University, Beijing 100871, P. R. China.
| | - Shek-Man Yiu
- Department of Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon Tong, Hong Kong, P. R. China.
| | - Bing-Wu Wang
- State Key Laboratory of Rare Earth Materials Chemistry and Applications and PKU-HKU Joint Laboratory on Rare Earth Materials and Bioinorganic Chemistry, Peking University, Beijing 100871, P. R. China.
| | - Song Gao
- State Key Laboratory of Rare Earth Materials Chemistry and Applications and PKU-HKU Joint Laboratory on Rare Earth Materials and Bioinorganic Chemistry, Peking University, Beijing 100871, P. R. China. .,South China University of Technology, P. R. China
| | - Tai-Chu Lau
- Department of Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon Tong, Hong Kong, P. R. China.
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Swain A, Martin R, Vignesh KR, Rajaraman G, Murray KS, Langley SK. Enhancing the barrier height for magnetization reversal in 4d/4f RuIII2LnIII2 "butterfly" single molecule magnets (Ln = Gd, Dy) via targeted structural alterations. Dalton Trans 2021; 50:12265-12274. [PMID: 34519749 DOI: 10.1039/d1dt01770e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
A series of 4d-4f {RuIII2DyIII2} and {RuIII2GdIII2} 'butterfly' (rhombohedral) complexes have been synthesized and characterized and their magnetic properties investigated. Earlier, we have reported the first 4d/4f SMM - [RuIII2DyIII2(OMe)2(O2CPh)4(mdea)2(NO3)2] (1Dy) with a Ueff value of 10.7 cm-1. As the structural distortion around the DyIII centres and the RuIII⋯DyIII exchange interactions are key to enhancing the anisotropy, in this work we have synthesised three more {Ru2Dy2} butterfly complexes where structural alteration around the DyIII centres and alterations to the bridging groups are performed with an aim to improve the magnetic properties. The new complexes reported here are [Ru2Dy2(OMe)2(O2C(4-Me-Ph)4(mdea)2(MeOH)4], 2Dy, [Ru2Dy2(OMe)2(O2C(2-Cl,4,5-F-Ph)4(mdea)2(NO3)2], 3Dy, and an acac derivative [Ru2Dy2(OMe)2(acac)4(NO3)2(edea)2], 4Dy, where acac- = acetylacetonate, edea2- = N-ethyldiethanolamine dianion. Complex 2Dy describes alteration in the DyIII centers, while complexes 3Dy and 4Dy are aimed to alter the RuIII⋯DyIII exchange pathways. To ascertain the 4d-4f exchange, the Gd-analogues of 1Dy and 4Dy were synthesised [Ru2Gd2(OMe)2(O2CPh)4(mdea)2(NO3)2], 1Gd, [Ru2Gd2(OMe)2(acac)4(NO3)2(edea)2], 4Gd. Both ac and dc susceptibility studies were performed on all these complexes, and out-of-phase signals were observed for 3Dy in zero-field while 2Dy and 4Dy show out-of-phase signals in the presence of an applied field. Complex 3Dy reveals a barrier height Ueff of 45 K. To understand the difference in the magnetic dynamic behavior compared to our earlier reported {RuIII2DyIII2} analogue, detailed theoretical calculations based on ab initio CASSCF/RASSI-SO calculations have been performed. Calculations reveal that the JRu⋯Dy value varies from -1.8 cm-1 (4Dy) to -2.4 cm-1 (3Dy). These values are also affirmed by DFT calculations performed on the corresponding GdIII analogues. The origin of the largest barrier and observation of slow magnetic relaxation in 3Dy is routed back to the stronger single-ion anisotropy and stronger JRu⋯Dy exchange which quenches the QTM effects more efficiently. This study thus paves the way forward to tune local structure around the LnIII center and the exchange pathway to enhance the SMM characteristics in other {3d-4f}/{4d-4f} SMMs.
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Affiliation(s)
- Abinash Swain
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai-400076, India.
| | - Robert Martin
- School of Science and the Environment, Division of Chemistry, Manchester Metropolitan University, Manchester, M15 6BH, UK.
| | - Kuduva R Vignesh
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai-400076, India.
| | - Gopalan Rajaraman
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai-400076, India.
| | - Keith S Murray
- School of Chemistry, 17 Rainforest Walk, Monash University, Clayton, Victoria 3800, Australia.
| | - Stuart K Langley
- School of Science and the Environment, Division of Chemistry, Manchester Metropolitan University, Manchester, M15 6BH, UK.
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Louis-Jean J, Balasekaran SM, Lawler KV, Sanchis-Perucho A, Martínez-Lillo J, Smith D, Forster PM, Salamat A, Poineau F. Coexistence of metamagnetism and slow relaxation of magnetization in ammonium hexafluoridorhenate. RSC Adv 2021; 11:6353-6360. [PMID: 35423149 PMCID: PMC8694846 DOI: 10.1039/d0ra10325j] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Accepted: 01/27/2021] [Indexed: 11/21/2022] Open
Abstract
The (NH4)2[ReF6] (1) salt was studied by X-ray diffraction, Raman spectroscopy, theoretical calculations, and magnetic measurements. 1 crystallizes in the trigonal space group P3̄m1 (Re-F = 1.958(5) Å). In the Raman spectrum of 1, splitting of the observed peaks was observed and correlated to the valence frequencies of vibration of the [ReF6]2- anion. The study of the magnetic properties of 1, through DC and AC magnetic susceptibility measurements, reveals the coexistence of metamagnetism and slow relaxation of magnetization at low temperature, which is unusual in the molecular systems based on the paramagnetic 5d metal ions reported so far.
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Affiliation(s)
- James Louis-Jean
- Department of Chemistry and Biochemistry, University of Nevada Las Vegas 4505 South Maryland Parkway Las Vegas Nevada 89154-4003 USA
| | - Samundeeswari M Balasekaran
- Department of Chemistry and Biochemistry, University of Nevada Las Vegas 4505 South Maryland Parkway Las Vegas Nevada 89154-4003 USA
| | - Keith V Lawler
- Department of Chemistry and Biochemistry, University of Nevada Las Vegas 4505 South Maryland Parkway Las Vegas Nevada 89154-4003 USA
| | - Adrián Sanchis-Perucho
- Instituto de Ciencia Molecular (ICMol), Departament de Química Inorgànica, Universitat de València Catedrático José Beltrán 2 46980 Paterna València Spain
| | - José Martínez-Lillo
- Instituto de Ciencia Molecular (ICMol), Departament de Química Inorgànica, Universitat de València Catedrático José Beltrán 2 46980 Paterna València Spain
| | - Dean Smith
- Department of Physics and Astronomy, University of Nevada Las Vegas 4505 South Maryland Parkway Las Vegas Nevada 89154-4003 USA.,HPCAT, X-ray Science Division, Argonne National Laboratory Lemont IL 60439 USA
| | - Paul M Forster
- Department of Chemistry and Biochemistry, University of Nevada Las Vegas 4505 South Maryland Parkway Las Vegas Nevada 89154-4003 USA
| | - Ashkan Salamat
- Department of Physics and Astronomy, University of Nevada Las Vegas 4505 South Maryland Parkway Las Vegas Nevada 89154-4003 USA
| | - Frederic Poineau
- Department of Chemistry and Biochemistry, University of Nevada Las Vegas 4505 South Maryland Parkway Las Vegas Nevada 89154-4003 USA
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8
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Su QQ, Yuan Q, Wu XF, Chen SH, Xiang J, Jin XX, Wang LX, Wang BW, Gao S, Lau TC. Slow magnetic relaxation in structurally similar mononuclear 8-coordinate Fe(II) and Fe(III) compounds. Chem Commun (Camb) 2021; 57:781-784. [PMID: 33355553 DOI: 10.1039/d0cc07004a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
A pair of structurally-similar and stable 8-coordinate high-spin Fe(ii) and Fe(iii) compounds have been obtained. Both compounds exhibit field-induced slow magnetic relaxation behaviour. The Fe(iii) compound represents the first example of 8-coordinate Fe(iii) single-molecule magnets (SMM).
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Affiliation(s)
- Qian-Qian Su
- College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou 434020, HuBei, P. R. China.
| | - Qiong Yuan
- State Key Laboratory of Rare Earth Materials Chemistry and Applications and PKU-HKU Joint Laboratory on Rare Earth Materials and Bioinorganic Chemistry, Peking University, Beijing 100871, China.
| | - Xiao-Fan Wu
- State Key Laboratory of Rare Earth Materials Chemistry and Applications and PKU-HKU Joint Laboratory on Rare Earth Materials and Bioinorganic Chemistry, Peking University, Beijing 100871, China.
| | - Si-Huai Chen
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430073, P. R. China
| | - Jing Xiang
- College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou 434020, HuBei, P. R. China.
| | - Xin-Xin Jin
- State Key Laboratory of Rare Earth Materials Chemistry and Applications and PKU-HKU Joint Laboratory on Rare Earth Materials and Bioinorganic Chemistry, Peking University, Beijing 100871, China.
| | - Li-Xin Wang
- College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou 434020, HuBei, P. R. China.
| | - Bing-Wu Wang
- State Key Laboratory of Rare Earth Materials Chemistry and Applications and PKU-HKU Joint Laboratory on Rare Earth Materials and Bioinorganic Chemistry, Peking University, Beijing 100871, China.
| | - Song Gao
- State Key Laboratory of Rare Earth Materials Chemistry and Applications and PKU-HKU Joint Laboratory on Rare Earth Materials and Bioinorganic Chemistry, Peking University, Beijing 100871, China. and South China University of Technology, P. R. China
| | - Tai-Chu Lau
- Department of Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon Tong, Hong Kong, China.
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Sanchis-Perucho A, Orts-Arroyo M, Camús-Hernández J, Rojas-Dotti C, Escrivà E, Lloret F, Martínez-Lillo J. Hexahalorhenate( iv) salts of protonated ciprofloxacin: antibiotic-based single-ion magnets. CrystEngComm 2021. [DOI: 10.1039/d1ce01337h] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
In the crystal lattice of two novel ReIV compounds, the paramagnetic [ReCl6]2− and [ReBr6]2− anions are well separated from each other through two protonated forms of the antibiotic ciprofloxacin. These compounds behave as single-ion magnets (SIMs).
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Affiliation(s)
- Adrián Sanchis-Perucho
- Instituto de Ciencia Molecular (ICMol)/Departament de Química Inorgànica, Universitat de València, c/ Catedrático José Beltrán 2, 46980, Paterna, València, Spain
| | - Marta Orts-Arroyo
- Instituto de Ciencia Molecular (ICMol)/Departament de Química Inorgànica, Universitat de València, c/ Catedrático José Beltrán 2, 46980, Paterna, València, Spain
| | - Javier Camús-Hernández
- Instituto de Ciencia Molecular (ICMol)/Departament de Química Inorgànica, Universitat de València, c/ Catedrático José Beltrán 2, 46980, Paterna, València, Spain
| | - Carlos Rojas-Dotti
- Instituto de Ciencia Molecular (ICMol)/Departament de Química Inorgànica, Universitat de València, c/ Catedrático José Beltrán 2, 46980, Paterna, València, Spain
| | - Emilio Escrivà
- Departament de Química Inorgànica, Facultat de Química, Universitat de València, Av. Vicente Andrés Estellés s/n, 46100, Burjassot, València, Spain
| | - Francesc Lloret
- Instituto de Ciencia Molecular (ICMol)/Departament de Química Inorgànica, Universitat de València, c/ Catedrático José Beltrán 2, 46980, Paterna, València, Spain
| | - José Martínez-Lillo
- Instituto de Ciencia Molecular (ICMol)/Departament de Química Inorgànica, Universitat de València, c/ Catedrático José Beltrán 2, 46980, Paterna, València, Spain
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X-ray Structure and Magnetic Properties of Heterobimetallic Chains Based on the Use of an Octacyanidodicobalt(III) Complex as Metalloligand. MAGNETOCHEMISTRY 2020. [DOI: 10.3390/magnetochemistry6040066] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The assembly of [Co2III(μ-2,5-dpp)(CN)8]2− anions and [MII(CH3OH)2(DMSO)2]2+ cations resulted into the formation of two heterobimetallic 1D coordination polymers of formula [MII(CH3OH)2(DMSO)2(μ-NC)2Co2III(μ-2,5-dpp)(CN)6]n·4nCH3OH [M = CoII (1)/FeII (2) and 2,5-dpp = 2,5-bis(2-pyridyl)pyrazine. The [Co2III(μ-2,5-dpp)(CN)8]2− metalloligand coordinates the paramagnetic [MII(CH3OH)2(DMSO)2]2+ complex cations, in a bis-monodentate fashion, to give rise to neutral heterobimetallic chains. Cryomagnetic dc (1.9–300 K) and ac (2.0–13 K) magnetic measurements for 1 and 2 show the presence of Co(II)HS (1) and Fe(II)HS (2) ions (HS – high-spin), respectively, with D values of +53.7(5) (1) and −5.1(3) cm−1 (2) and slow magnetic relaxation for 1, this compound being a new example of SIM with transversal magnetic anisotropy. Low-temperature Q-band EPR study of 1 confirms that D value is positive, which reveals the occurrence of a strong asymmetry in the g-tensors and allows a rough estimation of the E/D ratio, whereas 2 is EPR silent. Theoretical calculations by CASSCF/NEVPT2 on 1 and 2 support the results from magnetometry and EPR. The analysis of the ac magnetic measurements of 1 shows that the relaxation of M takes place in the ground state under external magnetic dc fields through dominant Raman and direct spin-phonon processes.
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Putting the Squeeze on Molecule-Based Magnets: Exploiting Pressure to Develop Magneto-Structural Correlations in Paramagnetic Coordination Compounds. MAGNETOCHEMISTRY 2020. [DOI: 10.3390/magnetochemistry6030032] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The cornerstone of molecular magnetism is a detailed understanding of the relationship between structure and magnetic behaviour, i.e., the development of magneto-structural correlations. Traditionally, the synthetic chemist approaches this challenge by making multiple compounds that share a similar magnetic core but differ in peripheral ligation. Changes in the ligand framework induce changes in the bond angles and distances around the metal ions, which are manifested in changes to magnetic susceptibility and magnetisation data. This approach requires the synthesis of a series of different ligands and assumes that the chemical/electronic nature of the ligands and their coordination to the metal, the nature and number of counter ions and how they are positioned in the crystal lattice, and the molecular and crystallographic symmetry have no effect on the measured magnetic properties. In short, the assumption is that everything outwith the magnetic core is inconsequential, which is a huge oversimplification. The ideal scenario would be to have the same complex available in multiple structural conformations, and this is something that can be achieved through the application of external hydrostatic pressure, correlating structural changes observed through high-pressure single crystal X-ray crystallography with changes observed in high-pressure magnetometry, in tandem with high-pressure inelastic neutron scattering (INS), high-pressure electron paramagnetic resonance (EPR) spectroscopy, and high-pressure absorption/emission/Raman spectroscopy. In this review, which summarises our work in this area over the last 15 years, we show that the application of pressure to molecule-based magnets can (reversibly) (1) lead to changes in bond angles, distances, and Jahn–Teller orientations; (2) break and form bonds; (3) induce polymerisation/depolymerisation; (4) enforce multiple phase transitions; (5) instigate piezochromism; (6) change the magnitude and sign of pairwise exchange interactions and magnetic anisotropy, and (7) lead to significant increases in magnetic ordering temperatures.
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Piccinelli F, Bettinelli M, Cano J, Lloret F, Julve M, Dolmella A. Magnetic Properties of a New Hexahalorhenate(IV) Compound and Structural Comparison with Its Hexahaloplatinate(IV) Analog. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.202000199] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Fabio Piccinelli
- Luminescent Materials Laboratory, DB Università di Verona, and INSTM, UdR Verona Strada Le Grazie 15 37134 Verona Italy
| | - Marco Bettinelli
- Luminescent Materials Laboratory, DB Università di Verona, and INSTM, UdR Verona Strada Le Grazie 15 37134 Verona Italy
| | - Joan Cano
- Instituto de Ciencia Molecular (ICMol)/Departament de Química Inorgànica Universitat de València C/ Catedrátco José Beltrán 2 46980 Paterna València Spain
| | - Francesc Lloret
- Instituto de Ciencia Molecular (ICMol)/Departament de Química Inorgànica Universitat de València C/ Catedrátco José Beltrán 2 46980 Paterna València Spain
| | - Miguel Julve
- Instituto de Ciencia Molecular (ICMol)/Departament de Química Inorgànica Universitat de València C/ Catedrátco José Beltrán 2 46980 Paterna València Spain
| | - Alessandro Dolmella
- Department of Pharmaceutical and Pharmacological Sciences University of Padova via F. Marzolo 5 35131 Padova Italy
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13
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Mousavi M, Duhayon C, Bretosh K, Béreau V, Sutter JP. Molybdenum(III) Thiocyanate- and Selenocyanate-Based One-Dimensional Heteronuclear Polymers: Coordination Affinity-Controlled Assemblage of Mixed Spin and Mixed Valence Derivatives with Ni(II) and Co(II/III). Inorg Chem 2020; 59:7603-7613. [PMID: 32412746 DOI: 10.1021/acs.inorgchem.0c00459] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
One-dimensional coordination polymers constructed with the 4d metallo-ligand [Mo(NCS)6]3- associated with NiII and CoII complexes are reported. The first series consists of anionic NCS-bridged [Mo-MII]- coordination polymers associated with a discrete paramagnetic complex or a diamagnetic CoIII complex acting as cations. The latter takes advantage of the coordination preference of the S-ligand for the soft 3d ions and has led to hetero-trimetallic [MoIIINiIICoIII] and mixed valence [MoIIICoIICoIII] compounds. A second series concerns neutral chains in which trinuclear [Mo M2II] units are bridged by an additional NCS anion. The soft character of the S atom was also the key to a rare example of a compound involving both high-spin and low-spin CoII centers associated with [Mo(NCS)6]. A [Mo-Ni] derivative obtained with [Mo(NCSe)6]3- has been considered in order to evaluate the effect of Se versus S on the exchange interaction. The spin distribution for selenocyanate metallo-ligand has been assessed by density functional theory calculations. The crystal structures for all compounds have been characterized, and their magnetic behaviors have been investigated. These ferrimagnetic systems are characterized by antiferromagnetic Mo-MII interactions in the range of -40 to -90 cm-1 (based on H = -JSaSb formalism) operative both with CoII and with NiII, thus demonstrating the potential of the MoIII-NCS combination for molecular systems in which exchange interactions play an important role.
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Affiliation(s)
- Malihe Mousavi
- Laboratoire de Chimie de Coordination (LCC) du CNRS, Université de Toulouse, CNRS, F-31077 Toulouse, France
| | - Carine Duhayon
- Laboratoire de Chimie de Coordination (LCC) du CNRS, Université de Toulouse, CNRS, F-31077 Toulouse, France
| | - Kateryna Bretosh
- Laboratoire de Chimie de Coordination (LCC) du CNRS, Université de Toulouse, CNRS, F-31077 Toulouse, France
| | - Virginie Béreau
- Laboratoire de Chimie de Coordination (LCC) du CNRS, Université de Toulouse, CNRS, F-31077 Toulouse, France.,Institut Universitaire de Technologie Paul Sabatier, Département de Chimie, Université de Toulouse, F-81104 Castres, France
| | - Jean-Pascal Sutter
- Laboratoire de Chimie de Coordination (LCC) du CNRS, Université de Toulouse, CNRS, F-31077 Toulouse, France
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14
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Structure and magnetic properties of a serendipitously synthesized copper(II) complex: [Cu(3-Br-2-pyone)6](ClO4)2. TRANSIT METAL CHEM 2020. [DOI: 10.1007/s11243-019-00375-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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15
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Field-Induced Single-Ion Magnet Phenomenon in Hexabromo- and Hexaiodorhenate(IV) Complexes. MAGNETOCHEMISTRY 2020. [DOI: 10.3390/magnetochemistry6020020] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Two mononuclear ReIV complexes of general formula (PPh4)2[ReX6] [PPh4+ = tetraphenylphosphonium cation, X = Br (1) and I (2)] have been prepared and structurally and magnetically characterised. Both compounds crystallise in the triclinic system with space group Pī. Their structures are made up of hexahalorhenate(IV), [ReX6]2−, anions, and bulky PPh4+ cations. Each ReIV ion in 1 and 2 is six-coordinate and bonded to six halide ions in a quasi regular octahedral geometry. In their crystal packing, the [ReX6]2− anions are well separated from each other through the organic cations, generating alternated anionic and cationic layers, and no intermolecular Re−X···X−Re interactions are present. Variable-temperature dc magnetic susceptibility measurements performed on microcrystalline samples of 1 and 2 show a very similar magnetic behaviour, which is typical of noninteracting mononuclear ReIV complexes with S = 3/2. Ac magnetic susceptibility measurements reveal the slow relaxation of the magnetisation in the presence of external dc fields for 1 and 2, hence indicating the occurrence of the field-induced single-ion magnet (SIM) phenomenon in these hexabromo- and hexaiodorhenate(IV) complexes.
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16
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Liu J, Pedersen KS, Greer SM, Oyarzabal I, Mondal A, Hill S, Wilhelm F, Rogalev A, Tressaud A, Durand E, Long JR, Clérac R. Access to Heteroleptic Fluorido‐Cyanido Complexes with a Large Magnetic Anisotropy by Fluoride Abstraction. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201914934] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Jun‐Liang Liu
- Univ. Bordeaux CNRS Centre de Recherche Paul Pascal CRPP UMR 5031 33600 Pessac France
- Current address: Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education School of Chemistry Sun Yat-Sen University Guangzhou 510275 P. R. China
| | - Kasper S. Pedersen
- Univ. Bordeaux CNRS Centre de Recherche Paul Pascal CRPP UMR 5031 33600 Pessac France
- Current address: Department of Chemistry Technical University of Denmark 2800, Kgs. Lyngby Denmark
| | - Samuel M. Greer
- Department of Chemistry Florida State University
- National High Magnetic Field Laboratory Florida State University Tallahassee FL 32306 USA
| | - Itziar Oyarzabal
- Univ. Bordeaux CNRS Centre de Recherche Paul Pascal CRPP UMR 5031 33600 Pessac France
- Chemistry Faculty University of the Basque Country UPV/EHU 20018 Donostia-San Sebastián Spain
| | - Abhishake Mondal
- Univ. Bordeaux CNRS Centre de Recherche Paul Pascal CRPP UMR 5031 33600 Pessac France
- Current address: Solid State and Structural Chemistry Unit Indian Institute of Science C.V. Raman Road Bangalore 560012 India
| | - Stephen Hill
- Department of Physics Florida State University
- National High Magnetic Field Laboratory Florida State University Tallahassee FL 32306 USA
| | | | - Andrei Rogalev
- ESRF-The European Synchrotron 38043 Grenoble Cedex 9 France
| | | | | | - Jeffrey R. Long
- Department of Chemistry University of California Berkeley USA
- Department of Chemical and Biomolecular Engineering University of California Berkeley USA
- Materials Sciences Division Lawrence Berkeley National Laboratory Berkeley CA 94720 USA
| | - Rodolphe Clérac
- Univ. Bordeaux CNRS Centre de Recherche Paul Pascal CRPP UMR 5031 33600 Pessac France
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17
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Liu JL, Pedersen KS, Greer SM, Oyarzabal I, Mondal A, Hill S, Wilhelm F, Rogalev A, Tressaud A, Durand E, Long JR, Clérac R. Access to Heteroleptic Fluorido-Cyanido Complexes with a Large Magnetic Anisotropy by Fluoride Abstraction. Angew Chem Int Ed Engl 2020; 59:10306-10310. [PMID: 32080955 DOI: 10.1002/anie.201914934] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Indexed: 11/07/2022]
Abstract
Silicon-mediated fluoride abstraction is demonstrated as a means of generating the first fluorido-cyanido transition metal complexes. This new synthetic approach is exemplified by the synthesis and characterization of the heteroleptic complexes, trans-[MIV F4 (CN)2 ]2- (M=Re, Os), obtained from their homoleptic [MIV F6 ]2- parents. As shown by combined high-field electron paramagnetic resonance spectroscopy and magnetization measurements, the partial substitution of fluoride by cyanide ligands leads to a marked increase in the magnetic anisotropy of trans-[ReF4 (CN)2 ]2- as compared to [ReF6 ]2- , reflecting the severe departure from an ideal octahedral (Oh point group) ligand field. This methodology paves the way toward the realization of new heteroleptic transition metal complexes that may be used as highly anisotropic building-blocks for the design of high-performance molecule-based magnetic materials.
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Affiliation(s)
- Jun-Liang Liu
- Univ. Bordeaux, CNRS, Centre de Recherche Paul Pascal, CRPP, UMR 5031, 33600, Pessac, France.,Current address: Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275, P. R. China
| | - Kasper S Pedersen
- Univ. Bordeaux, CNRS, Centre de Recherche Paul Pascal, CRPP, UMR 5031, 33600, Pessac, France.,Current address: Department of Chemistry, Technical University of Denmark, 2800, Kgs., Lyngby, Denmark
| | - Samuel M Greer
- Department of Chemistry, Florida State University.,National High Magnetic Field Laboratory, Florida State University, Tallahassee, FL, 32306, USA
| | - Itziar Oyarzabal
- Univ. Bordeaux, CNRS, Centre de Recherche Paul Pascal, CRPP, UMR 5031, 33600, Pessac, France.,Chemistry Faculty, University of the Basque Country UPV/EHU, 20018, Donostia-San Sebastián, Spain
| | - Abhishake Mondal
- Univ. Bordeaux, CNRS, Centre de Recherche Paul Pascal, CRPP, UMR 5031, 33600, Pessac, France.,Current address: Solid State and Structural Chemistry Unit, Indian Institute of Science, C.V. Raman Road, Bangalore, 560012, India
| | - Stephen Hill
- Department of Physics, Florida State University.,National High Magnetic Field Laboratory, Florida State University, Tallahassee, FL, 32306, USA
| | - Fabrice Wilhelm
- ESRF-The European Synchrotron, 38043, Grenoble Cedex 9, France
| | - Andrei Rogalev
- ESRF-The European Synchrotron, 38043, Grenoble Cedex 9, France
| | - Alain Tressaud
- CNRS, ICMCB, UPR 9048, Univ. Bordeaux, 33608, Pessac, France
| | - Etienne Durand
- CNRS, ICMCB, UPR 9048, Univ. Bordeaux, 33608, Pessac, France
| | - Jeffrey R Long
- Department of Chemistry, University of California Berkeley, USA.,Department of Chemical and Biomolecular Engineering, University of California Berkeley, USA.,Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Rodolphe Clérac
- Univ. Bordeaux, CNRS, Centre de Recherche Paul Pascal, CRPP, UMR 5031, 33600, Pessac, France
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18
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Su QQ, Fan K, Huang XD, Xiang J, Cheng SC, Ko CC, Zheng LM, Kurmoo M, Lau TC. Field-induced slow magnetic relaxation in low-spin S = 1/2 mononuclear osmium(v) complexes. Dalton Trans 2020; 49:4084-4092. [PMID: 32134093 DOI: 10.1039/d0dt00295j] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Photochemical reactions of (PPh4)[OsVI(N)(L)(CN)3] (NO2-OsN) with piperidine and pyrrolidine afforded two osmium(v) hydrazido compounds, (PPh4)[OsV(L)(CN)3(NNC5H10)] ([PPh4]1) and (PPh4)[OsV(L)(CN)3(NNC4H8)] ([PPh4]2), respectively. Their structures consist of isolated, mononuclear distorted octahedral osmium anions that are well-separated from each other by PPh4+. Their low spin S = 1/2 and L = 1 ground state was confirmed by magnetometry and DFT calculations. Interestingly, both compounds exhibit slow magnetic relaxation under a bias dc-field. These osmium(v) complexes are potentially useful building-blocks for the construction of molecule-based architectures with interesting magnetic properties. In contrast, the structurally related (PPh4)[OsIII(L)(CN)3(NH3)] ([PPh4]3), which also has a low-spin S = 1/2 ground state but with a different electronic configuration (5d5), does not exhibit slow magnetic relaxation, due to the absence of any orbital moment (L = 0). Furthermore, the structurally different osmium(v) hydrazido compound reported by Meyer, [OsV(tpy)(Cl)2(NNC5H10)](PF6) (4[PF6]), also does not exhibit slow magnetic relaxation due possibly to a change in magnetic anisotropy from axial for [PPh4]1 and [PPh4]2 to planar.
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Affiliation(s)
- Qian-Qian Su
- College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou 434020, Hubei, P. R. China.
| | - Kun Fan
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China.
| | - Xin-Da Huang
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China.
| | - Jing Xiang
- College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou 434020, Hubei, P. R. China.
| | - Shun-Cheung Cheng
- Department of Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon Tong, Hong Kong.
| | - Chi-Chiu Ko
- Department of Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon Tong, Hong Kong.
| | - Li-Min Zheng
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China.
| | - Mohamedally Kurmoo
- Institut de Chimie, Université de Strasbourg, CNRS-UMR7177, 4 rue Blaise Pascal, Strasbourg Cedex 67007, France
| | - Tai-Chu Lau
- Department of Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon Tong, Hong Kong.
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19
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Kalofolias DA, Weselski M, Siczek M, Lis T, Tsipis AC, Tangoulis V, Milios CJ. Dinuclear and Mononuclear Rhenium Coordination Compounds upon Employment of a Schiff-Base Triol Ligand: Structural, Magnetic, and Computational Studies. Inorg Chem 2019; 58:8596-8606. [PMID: 31180213 DOI: 10.1021/acs.inorgchem.9b00886] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
The 1:1 reaction of trans-[ReIIICl3(PPh3)2(MeCN)] with 2-(β-naphthalideneamino)-2-hydroxymethyl-1-propanol, H3L, in toluene gave the dinuclear complex [ReIII2Cl4(HL)(PPh3)]·2C7H8 (1·2C7H8), while the 1:2 reaction led to the formation of complex [ReIVCl2(HL)(PPh3)] (2). In both species, the Schiff-base ligand exists in its doubly deprotonated form, HL2-, forming chelate rings around the metallic centers. In addition, 1·2C7H8 displays a unique triple metal-to-metal bond between the two trivalent rhenium ions separated at a 2.229(1) Å bond distance, while in complex [ReIVCl2(HL)(PPh3)] (2) the two aromatic ligands, HL2- and PPh3, occupy axial positions, with the terminal Cl- ions in the trans position. Investigation of the magnetic properties revealed a Curie paramagnetic behavior ( S = 1/2) with a pronounced temperature independent paramagnetism (TIP) for 1·2C7H8 and 2. Both the geometry and the electronic structure of both compounds have been studied by means of density functional theory (DFT) calculations, confirming the triplet and doublet spin ground state of the complexes and furthermore establishing an electron-rich σ2π4δ1δ*1 bond order of 3 for 1·2C7H8. In addition, the absorption spectrum of 1·2C7H8 in CH2Cl2 was simulated by means of DFT calculations and is in excellent agreement with both the crystallographic and theoretical studies. Complex 1·2C7H8 is the first dinuclear rhenium complex with a triple metal-metal bond between trivalent rhenium centers.
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Affiliation(s)
| | - Marek Weselski
- Faculty of Chemistry , University of Wrocław , Joliot-Curie 14 , Wrocław 50-383 , Poland
| | - Milosz Siczek
- Faculty of Chemistry , University of Wrocław , Joliot-Curie 14 , Wrocław 50-383 , Poland
| | - Tadeusz Lis
- Faculty of Chemistry , University of Wrocław , Joliot-Curie 14 , Wrocław 50-383 , Poland
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20
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Rojas-Dotti C, Sanchis-Perucho A, Orts-Arroyo M, Lloret F, Martínez-Lillo J. Synthesis and characterisation of a novel ferrimagnetic chain based on copper(II) and rhenium(IV). CR CHIM 2019. [DOI: 10.1016/j.crci.2019.04.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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21
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Sanchis-Perucho A, Rojas-Dotti C, Moliner N, Martínez-Lillo J. Field-induced slow relaxation of magnetisation in an anionic heterotetranuclear [ZnIIReIV3] system. Dalton Trans 2019; 48:370-373. [DOI: 10.1039/c8dt03728k] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The compound (NBu4)4[ZnII{ReIVCl4(μ-ox)}3] (1) [NBu4+ = tetra-n-butylammonium cation and ox2− = oxalate dianion] is the first example of an oxalato-bridged ZnII system coordinated to a 5d metal ion that exhibits slow relaxation of magnetisation.
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Affiliation(s)
- Adrián Sanchis-Perucho
- Instituto de Ciencia Molecular (ICMol)/Departament de Química Inorgànica
- Universitat de València
- 46980 Paterna
- Spain
| | - Carlos Rojas-Dotti
- Instituto de Ciencia Molecular (ICMol)/Departament de Química Inorgànica
- Universitat de València
- 46980 Paterna
- Spain
| | - Nicolás Moliner
- Instituto de Ciencia Molecular (ICMol)/Departament de Química Inorgànica
- Universitat de València
- 46980 Paterna
- Spain
| | - José Martínez-Lillo
- Instituto de Ciencia Molecular (ICMol)/Departament de Química Inorgànica
- Universitat de València
- 46980 Paterna
- Spain
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22
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Sanchis-Perucho A, Martínez-Lillo J. Ferromagnetic exchange interaction in a new Ir(iv)–Cu(ii) chain based on the hexachloroiridate(iv) anion. Dalton Trans 2019; 48:13925-13930. [DOI: 10.1039/c9dt02884f] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The new chloro-bridged heterobimetallic IrIVCuII chain of formula {IrCl5(μ-Cl)Cu(viim)4}n [viim = 1-vinylimidazole] is the first reported compound based on the CuII and IrIV metal ions.
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Affiliation(s)
- Adrián Sanchis-Perucho
- Instituto de Ciencia Molecular (ICMol)/Departament de Química Inorgànica
- Universitat de València
- Paterna
- Spain
| | - José Martínez-Lillo
- Instituto de Ciencia Molecular (ICMol)/Departament de Química Inorgànica
- Universitat de València
- Paterna
- Spain
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23
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Tai CY, Fu JH, Lee YH, He YJ, Wang SC, Chan YT. Facile synthesis of multicomponent heterobimetallic metallomacrocycles through selective metal–ligand coordination. Chem Commun (Camb) 2019; 55:6289-6292. [DOI: 10.1039/c9cc02430a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Through selective coordination, three heterobimetallic ZnII–PdII/PtII metallomacrocycles have been constructed by either a stepwise or a one-pot self-assembly protocol.
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Affiliation(s)
- Chang-You Tai
- Department of Chemistry
- National Taiwan University
- Taipei
- Taiwan
| | - Jun-Hao Fu
- Department of Chemistry
- National Taiwan University
- Taipei
- Taiwan
| | - Yin-Hsuan Lee
- Department of Chemistry
- National Taiwan University
- Taipei
- Taiwan
| | - Yun-Jui He
- Department of Chemistry
- National Taiwan University
- Taipei
- Taiwan
| | - Shi-Cheng Wang
- Department of Chemistry
- National Taiwan University
- Taipei
- Taiwan
| | - Yi-Tsu Chan
- Department of Chemistry
- National Taiwan University
- Taipei
- Taiwan
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24
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Jochim A, Jess I, Näther C. Zn(NCS)2
-3-cyanopyridine Coordination Compounds: Synthesis, Crystal Structures, and Thermal Properties. Z Anorg Allg Chem 2018. [DOI: 10.1002/zaac.201800428] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Aleksej Jochim
- Institute of Inorganic Chemistry; Christian-Albrechts-University of Kiel; Max-Eyth-Straße 2 24118 Kiel Germany
| | - Inke Jess
- Institute of Inorganic Chemistry; Christian-Albrechts-University of Kiel; Max-Eyth-Straße 2 24118 Kiel Germany
| | - Christian Näther
- Institute of Inorganic Chemistry; Christian-Albrechts-University of Kiel; Max-Eyth-Straße 2 24118 Kiel Germany
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25
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Jochim A, Ceglarska M, Rams M, Näther C. Synthesis, Crystal Structures, and Properties of Ni(NCS)2
-4-methoxypyridine Coordination Compounds. Z Anorg Allg Chem 2018. [DOI: 10.1002/zaac.201800332] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Aleksej Jochim
- Institute of Inorganic Chemistry; Christian-Albrechts-University of Kiel; Max-Eyth-Straße 2 24118 Kiel Germany
| | - Magdalena Ceglarska
- Institute of Physics; Jagiellonian University; Łojasiewicza 11 30348 Kraków Poland
| | - Michał Rams
- Institute of Physics; Jagiellonian University; Łojasiewicza 11 30348 Kraków Poland
| | - Christian Näther
- Institute of Inorganic Chemistry; Christian-Albrechts-University of Kiel; Max-Eyth-Straße 2 24118 Kiel Germany
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26
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Chorazy S, Majcher AM, Kozieł M, Kobylarczyk J, Ohkoshi S, Podgajny R. Tuning of High Spin Ground State and Slow Magnetic Relaxation within Trimetallic Cyanide‐Bridged {Ni
II
x
Co
II
9−
x
[W
V
(CN)
8
]
6
} and {Mn
II
x
Co
II
9−
x
[W
V
(CN)
8
]
6
} Clusters. Chemistry 2018; 24:15533-15542. [DOI: 10.1002/chem.201803443] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Indexed: 11/07/2022]
Affiliation(s)
- Szymon Chorazy
- Faculty of Chemistry Jagiellonian University Gronostajowa 2 30-387 Krakow Poland
| | - Anna M. Majcher
- Faculty of Physics, Astronomy and Applied Computer Science Jagiellonian University Łojasiewicza 11 30-348 Kraków Poland
| | - Marcin Kozieł
- Faculty of Chemistry Jagiellonian University Gronostajowa 2 30-387 Krakow Poland
| | - Jedrzej Kobylarczyk
- Faculty of Chemistry Jagiellonian University Gronostajowa 2 30-387 Krakow Poland
| | - Shin‐ichi Ohkoshi
- Department of Chemistry School of Science The University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo 113-0033 Japan
| | - Robert Podgajny
- Faculty of Chemistry Jagiellonian University Gronostajowa 2 30-387 Krakow Poland
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27
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Gass IA, Lu J, Asadi M, Lupton DW, Forsyth CM, Geoghegan BL, Moubaraki B, Cashion JD, Martin LL, Bond AM, Murray KS. Use of the TCNQF 4 2- Dianion in the Spontaneous Redox Formation of [Fe III (L - ) 2 ][TCNQF 4 ⋅- ]. Chempluschem 2018; 83:658-668. [PMID: 31950640 DOI: 10.1002/cplu.201800010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Revised: 02/12/2018] [Indexed: 11/08/2022]
Abstract
The reaction of [FeII (L. )2 ](BF4 )2 with Li2 TCNQF4 results in the formation of [FeIII (L- )2 ][TCNQF4 . - ] (1) where L. is the radical ligand, 4,4-dimethyl-2,2-di(2-pyridyl)oxazolidine-N-oxide and TCNQF4 is 2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane. This has been characterised by X-ray diffraction, Raman and Fourier transform infrared (FTIR) spectroscopy, variable-temperature magnetic susceptibility, Mössbauer spectroscopy and electrochemistry. X-ray diffraction studies, magnetic susceptibility measurements and Raman and FTIR spectroscopy suggest the presence of low-spin FeIII ions, the anionic form (L- ) of the ligand and the anionic radical form of TCNQF4 ; viz. TCNQF4 . - . Li2 TCNQF4 reduces the [FeII (L. )2 ]2+ dication, which undergoes a reductively induced oxidation to form the [FeIII (L- )2 ]+ monocation resulting in the formation of [FeIII (L- )2 ][TCNQF4 . - ] (1), the electrochemistry of which revealed four well-separated, diffusion-controlled, one-electron, reversible processes. Mössbauer spectroscopy and electrochemical measurements suggest the presence of a minor second species, likely to be [FeII (L. )2 ][TCNQF4 2- ].
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Affiliation(s)
- Ian A Gass
- School of Chemistry, Monash University, Clayton, VIC, 3800, Australia.,School of Pharmacy and Biomolecular Sciences, University of Brighton, Brighton, BN2 4GJ, United Kingdom
| | - Jinzhen Lu
- School of Chemistry, Monash University, Clayton, VIC, 3800, Australia
| | - Mousa Asadi
- School of Chemistry, Monash University, Clayton, VIC, 3800, Australia
| | - David W Lupton
- School of Chemistry, Monash University, Clayton, VIC, 3800, Australia
| | - Craig M Forsyth
- School of Chemistry, Monash University, Clayton, VIC, 3800, Australia
| | - Blaise L Geoghegan
- School of Pharmacy and Biomolecular Sciences, University of Brighton, Brighton, BN2 4GJ, United Kingdom
| | | | - John D Cashion
- School of Physics and Astronomy, Monash University, Clayton, VIC, 3800, Australia
| | - Lisandra L Martin
- School of Chemistry, Monash University, Clayton, VIC, 3800, Australia
| | - Alan M Bond
- School of Chemistry, Monash University, Clayton, VIC, 3800, Australia
| | - Keith S Murray
- School of Chemistry, Monash University, Clayton, VIC, 3800, Australia
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28
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Rojas-Dotti C, Moliner N, González R, Martínez-Lillo J. Ligand substitution in cis-bis(acetonitrile)tetrachlororhenium(IV) complex with N,N-dimethylformamide and N,N-dimethylacetamide. Polyhedron 2018. [DOI: 10.1016/j.poly.2018.01.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Rojas-Dotti C, Moliner N, González R, Martínez-Lillo J. Hexakis(dimethylformamide)iron(II) complex cation in hexahalorhenate(IV)-based salts: synthesis, X-ray structure and magnetic properties. J COORD CHEM 2018. [DOI: 10.1080/00958972.2017.1423477] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Carlos Rojas-Dotti
- Departament de Química Inorgànica/Instituto de Ciencia Molecular (ICMol), Universitat de València, Valencia, Spain
- Cátedra de Química Inorgánica, Facultad de Química, Departamento Estrella Campos, Universidad de la República, Montevideo, Uruguay
| | - Nicolás Moliner
- Departament de Química Inorgànica/Instituto de Ciencia Molecular (ICMol), Universitat de València, Valencia, Spain
| | - Ricardo González
- Cátedra de Química Inorgánica, Facultad de Química, Departamento Estrella Campos, Universidad de la República, Montevideo, Uruguay
| | - José Martínez-Lillo
- Departament de Química Inorgànica/Instituto de Ciencia Molecular (ICMol), Universitat de València, Valencia, Spain
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30
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Armentano D, Sanchis-Perucho A, Rojas-Dotti C, Martínez-Lillo J. Halogen⋯halogen interactions in the self-assembly of one-dimensional 2,2′-bipyrimidine-based Cu IIRe IV systems. CrystEngComm 2018. [DOI: 10.1039/c8ce00996a] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two one-dimensional CuIIReIV coordination polymers of the general formula {[ReIVCl4(μ-bpym)CuIIX2]·solvent}n [where bpym = 2,2′-bipyrimidine, X = Cl (1) and Br (2), and solvent = H2O (1) and CHCl3 (2)] have been prepared and characterised structurally and magnetically.
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Affiliation(s)
- Donatella Armentano
- Dipartimento di Chimica e Tecnologie Chimiche (CTC)
- Università della Calabria
- Rende
- Italy
| | - Adrián Sanchis-Perucho
- Instituto de Ciencia Molecular (ICMol)/Departament de Química Inorgànica
- Universitat de València
- Paterna
- Spain
| | - Carlos Rojas-Dotti
- Instituto de Ciencia Molecular (ICMol)/Departament de Química Inorgànica
- Universitat de València
- Paterna
- Spain
| | - José Martínez-Lillo
- Instituto de Ciencia Molecular (ICMol)/Departament de Química Inorgànica
- Universitat de València
- Paterna
- Spain
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31
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Pedersen AH, Julve M, Martínez-Lillo J, Cano J, Brechin EK. Magneto-structural correlations in a family of Re IVCu II chains based on the hexachlororhenate(iv) metalloligand. Dalton Trans 2017; 46:16025-16033. [PMID: 28786445 DOI: 10.1039/c7dt02216f] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Six novel one-dimensional chloro-bridged ReIVCuII complexes of formula {[Cu(L)4][ReCl6]}n, where L = imidazole (Imi, 1), 1-methylimidazole (Meim, 2), 1-vinylimidazole (Vim, 3), 1-butylimidazole (Buim, 4), 1-vinyl-1,2,4-triazole (Vtri, 5) and N,N'-dimethylformamide (DMF, 6) are characterised structurally, magnetically and theoretically. The structures exhibit significant differences in Cu-Cl bond lengths and Re-Cl-Cu bridging angles, resulting in large differences in the nature and magnitude of magnetic exchange interactions between the ReIV and CuII ions. Theoretical calculations reveal the coupling to be primarily ferromagnetic, increasing in magnitude as the bridging angle becomes smaller and the bond lengths shorten.
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Affiliation(s)
- Anders H Pedersen
- EaStCHEM School of Chemistry, The University of Edinburgh, David Brewster Road, EH9 3FJ Edinburgh, UK.
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32
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Lee E, Seo S, Lee SS, Lindoy LF. Assembling latter d-block heterometal coordination polymers: Synthetic strategies and structural outcomes. Coord Chem Rev 2017. [DOI: 10.1016/j.ccr.2017.08.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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33
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Sanz S, O'Connor HM, Martí-Centelles V, Comar P, Pitak MB, Coles SJ, Lorusso G, Palacios E, Evangelisti M, Baldansuren A, Chilton NF, Weihe H, McInnes EJL, Lusby PJ, Piligkos S, Brechin EK. [MIII2MII3] n+ trigonal bipyramidal cages based on diamagnetic and paramagnetic metalloligands. Chem Sci 2017; 8:5526-5535. [PMID: 28970932 PMCID: PMC5618769 DOI: 10.1039/c7sc00487g] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2017] [Accepted: 05/18/2017] [Indexed: 11/24/2022] Open
Abstract
A family of five [MIII2MII3] n+ trigonal bipyramidal cages (MIII = Fe, Cr and Al; MII = Co, Zn and Pd; n = 0 for 1-3 and n = 6 for 4-5) of formulae [Fe2Co3L6Cl6] (1), [Fe2Zn3L6Br6] (2), [Cr2Zn3L6Br6] (3), [Cr2Pd3L6(dppp)3](OTf)6 (4) and [Al2Pd3L6(dppp)3](OTf)6 (5) (where HL is 1-(4-pyridyl)butane-1,3-dione and dppp is 1,3-bis(diphenylphosphino)propane) are reported. Neutral cages 1-3 were synthesised using the tritopic [MIIIL3] metalloligand in combination with the salts CoIICl2 and ZnIIBr2, which both act as tetrahedral linkers. The assembly of the cis-protected [PdII(dppp)(OTf)2] with [MIIIL3] afforded the anionic cages 4-5 of general formula [MIII2PdII3](OTf)6. The metallic skeleton of all cages describes a trigonal bipyramid with the MIII ions occupying the two axial sites and the MII ions sitting in the three equatorial positions. Direct current (DC) magnetic susceptibility, magnetisation and heat capacity measurements on 1 reveal weak antiferromagnetic exchange between the FeIII and CoII ions. EPR spectroscopy demonstrates that the distortion imposed on the {MO6} coordination sphere of [MIIIL3] by complexation in the {MIII2MII3} supramolecules results in a small, but measurable, increase of the zero field splitting at MIII. Complete active space self-consistent field (CASSCF) calculations on the three unique CoII sites of 1 suggest DCo ≈ -14 cm-1 and E/D ≈ 0.1, consistent with the magnetothermal and spectroscopic data.
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Affiliation(s)
- S Sanz
- EaStCHEM School of Chemistry , The University of Edinburgh , David Brewster Road , Edinburgh , EH9 3FJ , UK . ; ;
| | - H M O'Connor
- EaStCHEM School of Chemistry , The University of Edinburgh , David Brewster Road , Edinburgh , EH9 3FJ , UK . ; ;
| | - V Martí-Centelles
- EaStCHEM School of Chemistry , The University of Edinburgh , David Brewster Road , Edinburgh , EH9 3FJ , UK . ; ;
| | - P Comar
- EaStCHEM School of Chemistry , The University of Edinburgh , David Brewster Road , Edinburgh , EH9 3FJ , UK . ; ;
| | - M B Pitak
- UK National Crystallography Service , Chemistry , University of Southampton , Highfield Campus , Southampton , SO17 1BJ , UK
| | - S J Coles
- UK National Crystallography Service , Chemistry , University of Southampton , Highfield Campus , Southampton , SO17 1BJ , UK
| | - G Lorusso
- Instituto de Ciencia de Materiales de Aragón (ICMA) , CSIC - Universidad de Zaragoza , Departamento de Física de la Materia Condensada , 50009 Zaragoza , Spain
| | - E Palacios
- Instituto de Ciencia de Materiales de Aragón (ICMA) , CSIC - Universidad de Zaragoza , Departamento de Física de la Materia Condensada , 50009 Zaragoza , Spain
| | - M Evangelisti
- Instituto de Ciencia de Materiales de Aragón (ICMA) , CSIC - Universidad de Zaragoza , Departamento de Física de la Materia Condensada , 50009 Zaragoza , Spain
| | - A Baldansuren
- School of Chemistry , The University of Manchester , Oxford Road , Manchester , M13 9PL , UK .
| | - N F Chilton
- School of Chemistry , The University of Manchester , Oxford Road , Manchester , M13 9PL , UK .
| | - H Weihe
- Department of Chemistry , University of Copenhagen , Universitetsparken 5 , DK-2100 , Copenhagen , Denmark .
| | - E J L McInnes
- School of Chemistry , The University of Manchester , Oxford Road , Manchester , M13 9PL , UK .
| | - P J Lusby
- EaStCHEM School of Chemistry , The University of Edinburgh , David Brewster Road , Edinburgh , EH9 3FJ , UK . ; ;
| | - S Piligkos
- Department of Chemistry , University of Copenhagen , Universitetsparken 5 , DK-2100 , Copenhagen , Denmark .
| | - E K Brechin
- EaStCHEM School of Chemistry , The University of Edinburgh , David Brewster Road , Edinburgh , EH9 3FJ , UK . ; ;
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Molecular magnetism, quo vadis? A historical perspective from a coordination chemist viewpoint☆. Coord Chem Rev 2017. [DOI: 10.1016/j.ccr.2017.03.004] [Citation(s) in RCA: 240] [Impact Index Per Article: 34.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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35
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Pedersen AH, Geoghegan BL, Nichol GS, Lupton DW, Murray KS, Martínez-Lillo J, Gass IA, Brechin EK. Hexahalorhenate(iv) salts of metal oxazolidine nitroxides. Dalton Trans 2017; 46:5250-5259. [PMID: 28374882 DOI: 10.1039/c7dt00752c] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Eight coordination compounds of formulae [FeII(L˙)2][ReIVCl6] (1a), [FeII(L˙)2][ReIVBr6] (1b), [CoII(L˙)2][ReIVCl6]·CH3CN (2a), [CoII(L˙)2][ReIVBr6] (2b), [NiII(L˙)(CH3CN)3][ReIVCl6]·CH3CN (3a), [NiII(L˙)(CH3CN)3][ReIVBr6]·3CH3CN (3b), [CuII(L˙)2][ReIVCl6] (4a) and [CuII(L˙)2][ReIVBr6] (4b), where L˙ is the aminoxyl radical chelating ligand, 4,4'-dimethyl-2,2'-di(2-pyridyl)oxazolidine-N-oxide, have been synthesised. Structural and magnetic studies reveal metal-radical intramolecular antiferromagnetic interactions in the [MII(L˙)2]2+ cations in the iron, cobalt and copper based compounds (1a, 1b, 2a, 2b, 4a and 4b) with the central metal ion low-spin in the case of iron (1a and 1b) and a gradual, cobalt based, spin-crossover transition present in 2a and 2b. The nickel based compounds, 3a and 3b, were analysed in the dried form (3a(dried) and 3b(dried)) and directly in acetonitrile (3a(solvated) and 3b(solvated)). Microanalysis and IR spectroscopy on 3a(dried) and 3b(dried) suggest that the dried samples are best formulated as [NiII(L˙)(H2O)3][ReIVX6], where X = Cl (3a(dried)) and Br (3b(dried)). All forms of 3a and 3b exhibit cationic metal-radical ferromagnetic interactions resulting in S = 3/2 ground states. In addition, 3a(dried) exhibits spin-canting behaviour with an ordering temperature of 2.7 K, an open hysteresis loop with a coercive field Hc = 580 Oe, and a remanent magnetisation Mr = 0.21μB, resulting in a canting angle of ∼1.8°. In contrast, 3b(dried) shows no spin-canting behaviour; a maximum in χMvs. T at T = 3 K suggesting long-range antiferromagnetic ordering. 3a(solvated) and 3b(solvated) show no indication of long-range magnetic ordering, unlike 4a and 4b where anomalies are evident in the low-temperature magnetic susceptibility measurements.
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Affiliation(s)
- Anders H Pedersen
- EaStCHEM School of Chemistry, The University of Edinburgh, David Brewster Road, EH9 3FJ Edinburgh, Scotland, UK.
| | - Blaise L Geoghegan
- School of Pharmacy and Biomolecular Sciences, University of Brighton, Brighton BN2 4GJ, UK.
| | - Gary S Nichol
- EaStCHEM School of Chemistry, The University of Edinburgh, David Brewster Road, EH9 3FJ Edinburgh, Scotland, UK.
| | - David W Lupton
- School of Chemistry, Monash University, Clayton, Victoria 3800, Australia
| | - Keith S Murray
- School of Chemistry, Monash University, Clayton, Victoria 3800, Australia
| | - José Martínez-Lillo
- Departament de Química Inorgànica/Instituto de Ciencia Molecular (ICMol), Universitat de València, C/Catedrático José Beltrán 2, 46980, Paterna (València), Spain.
| | - Ian A Gass
- School of Pharmacy and Biomolecular Sciences, University of Brighton, Brighton BN2 4GJ, UK.
| | - Euan K Brechin
- EaStCHEM School of Chemistry, The University of Edinburgh, David Brewster Road, EH9 3FJ Edinburgh, Scotland, UK.
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36
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Pedersen AH, Julve M, Brechin EK, Martínez-Lillo J. Self-assembly of the tetrachlorido(oxalato)rhenate(iv) anion with protonated organic cations: X-ray structures and magnetic properties. CrystEngComm 2017. [DOI: 10.1039/c6ce02025a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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37
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Pedersen AH, Julve M, Martínez-Lillo J, Cano J, Brechin EK. Magneto-structural correlations in dirhenium(iv) complexes possessing magnetic pathways with even or odd numbers of atoms. Dalton Trans 2017; 46:11890-11897. [DOI: 10.1039/c7dt02612a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Spin-polarization enforces either ferro- or antiferromagnetic exchange interactions between ReIV ions with odd or even numbers of intervening atoms.
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Affiliation(s)
- Anders H. Pedersen
- EaStCHEM School of Chemistry
- The University of Edinburgh
- EH9 3FJ Edinburgh
- UK
| | - Miguel Julve
- Departament de Química Inorgànica/Instituto de Ciencia Molecular (ICMol)
- Universitat de València
- Paterna
- Spain
| | - José Martínez-Lillo
- Departament de Química Inorgànica/Instituto de Ciencia Molecular (ICMol)
- Universitat de València
- Paterna
- Spain
| | - Joan Cano
- Departament de Química Inorgànica/Instituto de Ciencia Molecular (ICMol)
- Universitat de València
- Paterna
- Spain
| | - Euan K. Brechin
- EaStCHEM School of Chemistry
- The University of Edinburgh
- EH9 3FJ Edinburgh
- UK
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38
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Pressure induced enhancement of the magnetic ordering temperature in rhenium(IV) monomers. Nat Commun 2016; 7:13870. [PMID: 28000676 PMCID: PMC5187583 DOI: 10.1038/ncomms13870] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2016] [Accepted: 11/07/2016] [Indexed: 01/17/2023] Open
Abstract
Materials that demonstrate long-range magnetic order are synonymous with information storage and the electronics industry, with the phenomenon commonly associated with metals, metal alloys or metal oxides and sulfides. A lesser known family of magnetically ordered complexes are the monometallic compounds of highly anisotropic d-block transition metals; the ‘transformation' from isolated zero-dimensional molecule to ordered, spin-canted, three-dimensional lattice being the result of through-space interactions arising from the combination of large magnetic anisotropy and spin-delocalization from metal to ligand which induces important intermolecular contacts. Here we report the effect of pressure on two such mononuclear rhenium(IV) compounds that exhibit long-range magnetic order under ambient conditions via a spin canting mechanism, with Tc controlled by the strength of the intermolecular interactions. As these are determined by intermolecular distance, ‘squeezing' the molecules closer together generates remarkable enhancements in ordering temperatures, with a linear dependence of Tc with pressure. Materials that demonstrate long-range magnetic order are synonymous with information storage. Here, the authors report the effect of pressure on two mononuclear rhenium compounds that exhibit long-range magnetic order under ambient conditions via a spin canting mechanism, where Tc is proportional to pressure.
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Gryca I, Palion‐Gazda J, Machura B, Penkala M, Lloret F, Julve M. Heterobimetallic Oxalate‐Bridged M
II
Re
IV
(M = Zn, Cu, Ni, Co and Mn) Complexes Incorporating Bis(3,5‐dimethylpyrazol‐1‐yl)methane: Synthesis and Magneto‐Structural Studies. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201601004] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Izabela Gryca
- Department of Crystallography Institute of Chemistry University of Silesia 9th Szkolna St. 40‐006 Katowice Poland
| | - Joanna Palion‐Gazda
- Department of Crystallography Institute of Chemistry University of Silesia 9th Szkolna St. 40‐006 Katowice Poland
| | - Barbara Machura
- Department of Crystallography Institute of Chemistry University of Silesia 9th Szkolna St. 40‐006 Katowice Poland
| | - Mateusz Penkala
- Department of Inorganic Organometallic Chemistry and Catalysis Institute of Chemistry University of Silesia 9th Szkolna St. 40‐006 Katowice Poland
| | - Francesc Lloret
- Instituto de Ciencia Molecular (ICMol)/Departament de Química Inorgànica Universitat de València c/ Catedrático José Beltrán 2 E‐46980 Paterna, València Spain
| | - Miguel Julve
- Instituto de Ciencia Molecular (ICMol)/Departament de Química Inorgànica Universitat de València c/ Catedrático José Beltrán 2 E‐46980 Paterna, València Spain
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40
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Arizaga L, González R, Armentano D, De Munno G, Novak MA, Lloret F, Julve M, Kremer C, Chiozzone R. Synthesis, Crystal Structure and Magnetic Properties of Heteropolynuclear Re
IV
M
II
Complexes Based on the Robust [ReCl
5
(pyzCOO)]
2–
Unit (pyzCOO = 2‐pyrazinecarboxylate). Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201501487] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Livia Arizaga
- Cátedra de Química Inorgánica, Departamento Estrella Campos, Facultad de Química, Universidad de la República, Avda. General Flores 2124, CC 1157 Montevideo, Uruguay, http://dec.fq.edu.uy/ecampos/areas_qinorganica_index.html
| | - Ricardo González
- Cátedra de Química Inorgánica, Departamento Estrella Campos, Facultad de Química, Universidad de la República, Avda. General Flores 2124, CC 1157 Montevideo, Uruguay, http://dec.fq.edu.uy/ecampos/areas_qinorganica_index.html
| | - Donatella Armentano
- Dipartimento di Chimica e Tecnologie Chimiche, Università della Calabria, via P. Bucci 14/c, 87030, Arcavacata di Rende, Cosenza, Italy
| | - Giovanni De Munno
- Dipartimento di Chimica e Tecnologie Chimiche, Università della Calabria, via P. Bucci 14/c, 87030, Arcavacata di Rende, Cosenza, Italy
| | - Miguel A. Novak
- Universidade Federal do Rio de Janeiro, Instituto de Física, CT Bloco A, 21941‐972, Rio de Janeiro, RJ, Brazil
| | - Francesc Lloret
- Departamento de Química Inorgánica/Instituto de Ciencia Molecular, Universitat de València, C/José Beltrán 2, 46980 Paterna, València, Spain, http://www.uv.es/qcacoor/[‡]for his outstanding contribution to progress in the coordination chemistry field both as a teacher and researcher
| | - Miguel Julve
- Departamento de Química Inorgánica/Instituto de Ciencia Molecular, Universitat de València, C/José Beltrán 2, 46980 Paterna, València, Spain, http://www.uv.es/qcacoor/[‡]for his outstanding contribution to progress in the coordination chemistry field both as a teacher and researcher
| | - Carlos Kremer
- Cátedra de Química Inorgánica, Departamento Estrella Campos, Facultad de Química, Universidad de la República, Avda. General Flores 2124, CC 1157 Montevideo, Uruguay, http://dec.fq.edu.uy/ecampos/areas_qinorganica_index.html
| | - Raúl Chiozzone
- Cátedra de Química Inorgánica, Departamento Estrella Campos, Facultad de Química, Universidad de la República, Avda. General Flores 2124, CC 1157 Montevideo, Uruguay, http://dec.fq.edu.uy/ecampos/areas_qinorganica_index.html
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41
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Brazzolotto D, Gennari M, Yu S, Pécaut J, Rouzières M, Clérac R, Orio M, Duboc C. An Experimental and Theoretical Investigation on Pentacoordinated Cobalt(III) Complexes with an Intermediate S=
1 Spin State: How Halide Ligands Affect their Magnetic Anisotropy. Chemistry 2015; 22:925-33. [DOI: 10.1002/chem.201502997] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2015] [Indexed: 11/06/2022]
Affiliation(s)
| | | | - Shengying Yu
- Univ. Grenoble Alpes, DCM, CNRS UMR 5250; 38000 Grenoble France
| | - Jacques Pécaut
- Univ. Grenoble Alpes, CEA, INAC-SCIB; 38000 Grenoble France
| | - Mathieu Rouzières
- CNRS, CRPP, UPR 8641; F-33600 Pessac France
- Univ. Bordeaux, CRPP, UPR 8641; F-33600 Pessac France
| | - Rodolphe Clérac
- CNRS, CRPP, UPR 8641; F-33600 Pessac France
- Univ. Bordeaux, CRPP, UPR 8641; F-33600 Pessac France
| | - Maylis Orio
- Aix Marseille Université, ISM2, CNRS UMR 7313; 13397 Marseille France
| | - Carole Duboc
- Univ. Grenoble Alpes, DCM, CNRS UMR 5250; 38000 Grenoble France
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Gryca I, Palion-Gazda J, Machura B, Penkala M, Kruszyński R, Cano J, Lloret F, Julve M. Synthesis, crystal structure and magnetic properties of H2tppz[ReCl6] and [Cu(bpzm)2(μ-Cl)ReCl3(μ-ox)Cu(bpzm)2(μ-ox)ReCl3(μ-Cl)]n. Dalton Trans 2015; 44:17118-28. [PMID: 26369896 DOI: 10.1039/c5dt02522b] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two new Re(iv) compounds of formulae H2tppz[ReCl6] (1) and [Cu(bpzm)2(μ-Cl)ReCl3(μ-ox)Cu(bpzm)2(μ-ox)ReCl3(μ-Cl)]n (2) [tppz = 2,3,5,6-tetrakis(2-pyridyl)pyrazine and bpzm = bis(pyrazolyl-1-yl)methane] have been prepared and their crystal structures determined by X-ray diffraction on single crystals. Compound 1 is a mononuclear species whose structure consists of octahedral hexachlororhenate(iv) anions and diprotonated H2tppz(2+) cations which are arranged in the unit cell as alternating anionic and cationic layers, held together by electrostatic forces. The structure of 2 is made up of alternating [Cu(1)(bpzm)2](2+) and [(ox)ReCl3(μ-Cl)Cu(2)(bpzm)2(μ-Cl)ReCl3(ox)](2-) entities interlinked by oxalate bridges to afford a neutral heterobimetallic chain. The oxalate group adopts the didentate (at Re)/monodentate (at Cu) bridging mode. The magnetic behavior of 1 and 2 has been investigated over the temperature range 1.9-295 K. 1 is a magnetically diluted Re(iv) complex, the relatively large value of the zero-field splitting of the ground level [D = -15.8(2) cm(-1)] accounting for the variation of χMT in the low temperature range. Weak intrachain ferromagnetic interactions between Re(iv) and Cu(ii) through oxalate (J1 = +0.15 cm(-1)) and single chloro (J2 = +4.9 cm(-1)) bridges occur in 2 which are obscured by the large zero-field splitting of the Re(iv) ion (DRe = 42 cm(-1)). In addition, interchain antiferromagnetic interactions are also involved in 2 which are responsible for the metamagnetic behavior observed, the value of the critical dc magnetic field (Hc) being 20 kOe.
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Affiliation(s)
- I Gryca
- Department of Crystallography, Institute of Chemistry, University of Silesia, 9th Szkolna St., 40-006 Katowice, Poland.
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43
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Martínez-Lillo J, Julve M, Brechin EK. Hexakis(diethylacetamide)iron(II) hexahalorhenate(IV) ionic salts: X-ray structures and magnetic properties. Polyhedron 2015. [DOI: 10.1016/j.poly.2015.05.036] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Pacheco M, Cuevas A, González-Platas J, Lloret F, Julve M, Kremer C. The crystal structure and magnetic properties of 3-pyridinecarboxylate-bridged Re(II)M(II) complexes (M = Cu, Ni, Co and Mn). Dalton Trans 2015; 44:11636-48. [PMID: 26042855 DOI: 10.1039/c5dt01321f] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The novel Re(II) complex NBu4[Re(NO)Br4(Hnic)] (1) and the heterodinuclear compounds [Re(NO)Br4(μ-nic)Ni(dmphen)2]·½CH3CN (2), [Re(NO)Br4(μ-nic)Co(dmphen)2]·½MeOH (3), [Re(NO)Br4(μ-nic)Mn(dmphen)(H2O)2]·dmphen (4), [Re(NO)Br4(μ-nic)Cu(bipy)2] (5) [Re(NO)Br4(μ-nic)Cu(dmphen)2] (5') (NBu4(+) = tetra-n-butylammonium cation, Hnic = 3-pyridinecarboxylic acid, dmphen = 2,9-dimethyl-1,10-phenanthroline, bipy = 2,2'-bipyridine) have been prepared and the structures of 1-5 determined using single crystal X-ray diffraction. The structure of 1 consists of [Re(NO)Br4(Hnic)](-) anions and NBu4(+) cations. Each Re(II) is six-coordinate with four bromide ligands, a linear nitrosyl group and a nitrogen atom from the Hnic molecule, in a distorted octahedral surrounding. The structures of 2-5 are made up of discrete heterodinuclear Re(II)M(II) units where the fully deprotonated [Re(NO)Br4(nic)](2-) entity acts as a didentate ligand through the carboxylate group towards the [Ni(dmphen)2](2+) (2), [Co(dmphen)2](2+) (3), [Mn(dmphen)(H2O)2](2+) (4) and [Cu(bipy)2](2+) (5) fragments, the Re-M separation across the nic bridge being 7.8736(8) (2), 7.9632(10) (3), 7.7600(6) (4) and 8.2148(7) Å (5). The environment of the Re(II) ion in 2-5 is the same as 1 that in and all M(II) are six-coordinate in highly distorted octahedral surroundings, the main source of the distortion being due to the reduced bite of the chelating carboxylate. The magnetic properties of 1-5' were investigated in the temperature range 1.9-300 K. 1 behaves as a quasi-magnetically isolated spin doublet with very weak antiferromagnetic interactions through space Br···Br contacts. Its magnetic susceptibility data were successfully modeled through a deep analysis of the influence of the ligand field, spin-orbit coupling, tetragonal distortion and covalence effects as variable parameters. Compounds 2-5' exhibit weak antiferromagnetic interactions. The intramolecular exchange pathway in this family being discarded because of the symmetry of magnetic orbitals of the Re(II) ion (d(xy)) precludes any spin delocalization on the bridging nic orbitals, the observed magnetic interactions are most likely mediated by π-π type interactions between the peripheral ligands which occur in them. Only in the case of 4, short through space Br···Br contacts of ca. 4.03 Å (values larger than 5.5 Å in 2, 3 and 5) could be involved in the exchange coupling.
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Affiliation(s)
- Mario Pacheco
- Cátedra de Química Inorgánica, Departamento Estrella Campos, Facultad de Química, Universidad de la República, Avda. General Flores 2124, Montevideo, Uruguay
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Armentano D, Martínez-Lillo J. Aquapentachlororhenate(iv): a singular and promising building block for metal assembly. RSC Adv 2015. [DOI: 10.1039/c5ra10225a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The novel ReIV compound of formula PPh4[ReIVCl5(H2O)] (1) is the first example of a ReIV compound containing a coordinated water molecule which has been magnetostructurally studied.
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Affiliation(s)
- Donatella Armentano
- Centro di Eccellenza CEMIF.CAL
- Dipartimento di Chimica e Tecnologie Chimiche
- Università della Calabria
- CS
- Italy
| | - José Martínez-Lillo
- Instituto de Ciencia Molecular
- Facultad de Química de la Universidad de Valencia
- Valencia
- Spain
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