1
|
Mičová R, Bielková Z, Rajnák C, Titiš J, Moncoľ J, Bieńko A, Boča R. Magnetic properties of a europium(III) complex - possible multiplet crossover. Dalton Trans 2024; 53:1492-1496. [PMID: 38131466 DOI: 10.1039/d3dt03901c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2023]
Abstract
A dinuclear complex [(H2O)Zn(LH)Eu(NO3)3] containing a hexadentate Schiff-base {N2O4}-donor ligand LH2- was prepared and characterized by X-ray structural analysis and IR, electronic and fluorescence spectroscopy. DC magnetic data show that upon heating the diamagnetic complex with the ground state Eu(III)-7F0 and Zn(II)-1S switches to paramagnetic species due to the population of 7FJ (J = 1 to 6) magnetic multiplets. The magnetic susceptibility increases from zero, passes through a maximum, and then decreases upon heating. This behaviour can be explained using a spin-orbit Hamiltonian with an axial distortion term. There is an alternative interpretation of the susceptibility data based on a two-level model similar to that used in the spin crossover theory.
Collapse
Affiliation(s)
- Romana Mičová
- Department of Chemistry, Faculty of Natural Sciences, University of SS Cyril and Methodius, 917 01 Trnava, Slovakia.
| | - Zuzana Bielková
- Department of Chemistry, Faculty of Natural Sciences, University of SS Cyril and Methodius, 917 01 Trnava, Slovakia.
| | - Cyril Rajnák
- Department of Chemistry, Faculty of Natural Sciences, University of SS Cyril and Methodius, 917 01 Trnava, Slovakia.
| | - Ján Titiš
- Department of Chemistry, Faculty of Natural Sciences, University of SS Cyril and Methodius, 917 01 Trnava, Slovakia.
| | - Ján Moncoľ
- Institute of Inorganic Chemistry, FCHPT, Slovak University of Technology, 812 37 Bratislava, Slovakia
| | - Alina Bieńko
- Faculty of Chemistry, University of Wroclaw, 14 F. Joliot-Curie, 50-383 Wroclaw, Poland
| | - Roman Boča
- Faculty of Health Science, University of SS Cyril and Methodius, 917 01 Trnava, Slovakia
| |
Collapse
|
2
|
Cyclic [Cu-biRadical]2 Secondary Building Unit in 2p-3d and 2p-3d-4f Complexes: Crystal Structure and Magnetic Properties. Molecules 2023; 28:molecules28062514. [PMID: 36985497 PMCID: PMC10058193 DOI: 10.3390/molecules28062514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 03/07/2023] [Accepted: 03/07/2023] [Indexed: 03/12/2023] Open
Abstract
Employing the new nitronyl nitroxide biradical ligand biNIT-3Py-5-Ph (2-(5-phenyl-3-pyridyl)-bis(4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide)), a 16-spin Cu-radical complex, [Cu8(biNIT-3Py-5-Ph)4(hfac)16] 1, and three 2p-3d-4f chain complexes, {[Ln(hfac)3][Cu(hfac)2]2(biNIT-3Py-5-Ph)2}n (LnⅢ= Gd 2, Tb 3, Dy 4; hfac = hexafluoroacetylacetonate), have been prepared and characterized. X-ray crystallographic analysis revealed in all derivatives a common cyclic [Cu-biNIT]2 secondary building unit in which two bi-NIT-3Py-5-Ph biradical ligands and two CuII ions are associated via the pyridine N atoms and NO units. For complex 1, two such units assemble with four additional CuII ions to form a discrete complex involving 16 S = 1/2 spin centers. For complexes 2–4, the [Cu-biNIT]2 units are linked by LnIII ions via NO groups in a 1D coordination polymer. Magnetic studies show that the coordination of the aminoxyl groups with Cu or Ln ions results in behaviors combining ferromagnetic and antiferromagnetic interactions. No slow magnetic relaxation behavior was observed for Tb and Dy derivatives.
Collapse
|
3
|
Akhtar MN, AlDamen MA, Shahid M, Ahmad MS, Khalid M, Intisar A, Khan MU. Heterometallic Decanuclear [Fe
6
‐Ln
4
] Coordination Clusters with Enzymatic Mimic Activity: Synthesis, Structures, Magnetic Properties and Evaluation of Catecholase Activity. Appl Organomet Chem 2022. [DOI: 10.1002/aoc.6707] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Muhammad Nadeem Akhtar
- Division of Inorganic Chemistry, Institute of Chemistry The Islamia University of Bahawalpur Bahawalpur Pakistan
| | - Murad A. AlDamen
- Department of Chemistry, School of Science the University of Jordan Amman Jordan
| | - M. Shahid
- Functional Inorganic Materials Lab (FIML), Department of Chemistry Aligarh Muslim University Aligarh India
| | - M. Shahwaz Ahmad
- Functional Inorganic Materials Lab (FIML), Department of Chemistry Aligarh Muslim University Aligarh India
| | - Muhammad Khalid
- Department of Chemistry Khwaja Fareed University of Engineering & Information Technology Rahim Yar Khan Pakistan
| | - Azeem Intisar
- School of Chemistry University of the Punjab Lahore Pakistan
| | | |
Collapse
|
4
|
Dong H, Ma S, Zhong Q, Zhu M. Crystal structure, magnetic properties and luminescent behavior of four mononuclear lanthanide-radical complexes. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.132195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
5
|
Tanimoto R, Wada T, Okada K, Shiomi D, Sato K, Takui T, Suzuki S, Naota T, Kozaki M. A Molecule Having 13 Unpaired Electrons: Magnetic Property of a Gadolinium(III) Complex Coordinated with Six Nitronyl Nitroxide Radicals. Inorg Chem 2022; 61:3018-3023. [PMID: 35129334 DOI: 10.1021/acs.inorgchem.1c03764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A gadolinium(III) complex coordinated with six nitronyl nitroxide radicals showed intriguing temperature-dependent changes in magnetic susceptibilities. The gadolinium(III) ion in the complex is pseudo-eight-coordinated by three singlet-ground-state diradical anion species based on nitronyl nitroxide radicals. The magnetic susceptibility (χpT) of the gadolinium(III) complex at 298 K, whose value corresponded to that of a system with 13 unpaired electrons (seven-spin system), decreased upon a lowering of the temperature to 11 K but increased upon a further lowering of the temperature. Finally, the χpT value at 2 K was found to be higher than that at room temperature. The temperature-dependent magnetic behavior could be explained by a structural change in the diradical anion ligand due to its flexibility.
Collapse
Affiliation(s)
- Ryu Tanimoto
- Graduate School of Science, Osaka City University, Sumiyoshi-ku, Osaka, Osaka 558-8585, Japan
| | - Tomoyuki Wada
- Graduate School of Science, Osaka City University, Sumiyoshi-ku, Osaka, Osaka 558-8585, Japan
| | - Keiji Okada
- Graduate School of Science, Osaka City University, Sumiyoshi-ku, Osaka, Osaka 558-8585, Japan
| | - Daisuke Shiomi
- Graduate School of Science, Osaka City University, Sumiyoshi-ku, Osaka, Osaka 558-8585, Japan
| | - Kazunobu Sato
- Graduate School of Science, Osaka City University, Sumiyoshi-ku, Osaka, Osaka 558-8585, Japan
| | - Takeji Takui
- Graduate School of Science, Osaka City University, Sumiyoshi-ku, Osaka, Osaka 558-8585, Japan
| | - Shuichi Suzuki
- Department of Chemistry, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka, Osaka 560-8531, Japan
| | - Takeshi Naota
- Department of Chemistry, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka, Osaka 560-8531, Japan
| | - Masatoshi Kozaki
- Graduate School of Science, Osaka City University, Sumiyoshi-ku, Osaka, Osaka 558-8585, Japan
| |
Collapse
|
6
|
Huang X, Wang K, Han J, Xie J, Li L, Sutter JP. A metal-radical hetero-tri-spin SCM with methyl-pyrazole-nitronyl nitroxide bridges. Dalton Trans 2021; 50:11992-11998. [PMID: 34378596 DOI: 10.1039/d1dt02006d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The preparation, crystal structures, and magnetic properties of a family of hetero-tri-spin 1-D coordination polymers with the formula [Ln(hfac)3Cu(hfac)2(4-NIT-MePyz)2] (Ln = Gd, 1, Tb, 2, Dy, 3; hfac = hexafluoroacetylacetonate; 4-NIT-MePyz = 2-{4-(1-methyl)-pyrazolyl}-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide) are reported. In these complexes, the 4-NIT-MePyz radical acts as a linker to bridge the CuII and LnIII ions through its pyrazole and aminoxyl groups to form a chain structure. Magnetic properties typical of spin-chains are observed for Dy and Tb derivatives but single-chain magnet (SCM) behavior was evidenced only for the Tb compound which is characterized by an energy gap for demagnetization Δτ/kB of 31 K.
Collapse
Affiliation(s)
- Xiaohui Huang
- Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China.
| | | | | | | | | | | |
Collapse
|
7
|
Jing P, Xi L, Lu J, Han J, Huang X, Jin C, Xie J, Li L. Regulating Spin Dynamics of Nitronyl Nitroxide Biradical Lanthanide Complexes through Introducing Different Transition Metals. Chem Asian J 2021; 16:793-800. [PMID: 33590716 DOI: 10.1002/asia.202100062] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Revised: 02/14/2021] [Indexed: 11/05/2022]
Abstract
Four biradical-Ln complexes with different transition metal ions, namely [LnM(hfac)5 (NITPh-PyPzbis)] (MII =MnII and LnIII =Gd 1, Dy 2; MII =NiII and LnIII =Tb 3, Dy 4), were prepared by the reaction of Ln(hfac)3 ⋅ 2H2 O, Mn(hfac)2 ⋅ 2H2 O or Ni(hfac)2 ⋅ 2H2 O with NITPh-PyPzbis biradical (hfac=hexafluoroacetylacetonate, NITPh-PyPzbis=5-(3-(2-pyridinyl)-1H-pyrazol-1-yl)-1,3-bis(1'-oxyl-3'-oxido- 4',4',5',5'-tetramethyl-4,5-hydro-1H-imidazol-2-yl)benzene). In complexes 1-4, the NITPh-PyPzbis biradical chelates one LnIII ion by means of its aminoxyl moieties and the transition metal ion is introduced through the two N donors from the pyridyl pyrazolyl moiety. Magnetic investigations indicate that complex 4 displays visible maxima in frequency/temperature-dependent χ'' signals with two-step relaxation processes, but complex 2 exhibits no slow magnetization relaxation. The comparison of structure parameters of both Dy complexes indicates that the symmetries of coordination spheres of two Dy ions are D2d for 2 and C2v for 4, which thus probably results in different magnetic relaxation behaviors. This work provides new insight for improving properties of Ln-biradical based SMMs.
Collapse
Affiliation(s)
- Pei Jing
- Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry, College of Chemistry, Nankai University, Tianjin, 300071, P. R China
| | - Lu Xi
- Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry, College of Chemistry, Nankai University, Tianjin, 300071, P. R China
| | - Jiao Lu
- Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry, College of Chemistry, Nankai University, Tianjin, 300071, P. R China
| | - Jing Han
- Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry, College of Chemistry, Nankai University, Tianjin, 300071, P. R China
| | - Xiaohui Huang
- Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry, College of Chemistry, Nankai University, Tianjin, 300071, P. R China
| | - Chaoyi Jin
- Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry, College of Chemistry, Nankai University, Tianjin, 300071, P. R China
| | - Junfang Xie
- Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry, College of Chemistry, Nankai University, Tianjin, 300071, P. R China
| | - Licun Li
- Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry, College of Chemistry, Nankai University, Tianjin, 300071, P. R China
| |
Collapse
|
8
|
Lu J, Jing P, Jin C, Xie J, Li L. Modulating the magnetization dynamics in Ln-Cu-Rad hetero-tri-spin complexes through cis/ trans coordination of nitronyl nitroxide radicals around the metal center. Dalton Trans 2021; 50:3280-3288. [PMID: 33587736 DOI: 10.1039/d1dt00090j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Self-assembling the novel nitronyl nitroxide radical NIT-3Py-5-Ph (2-(5-phenyl-3-pyridyl)-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide) with Ln(hfac)3·2H2O and Cu(hfac)2 (hfac = hexafluoroacetylacetonate) resulted in two heterometallic complexes with formula [LnCu(hfac)5(NIT-3Py-5-Ph)2] (Ln = Gd 1, Dy 2), in which two NIT-3Py-5-Ph radicals are coordinated with the LnIII ion via their nitroxide units in the cis-arrangement manner and the CuII ion is ligated by the pyridyl N donors of the radicals. Interestingly, when the phenyl group of NIT-3Py-5-Ph was replaced with a p-pyridyl group, a new family of 2D networks, namely, {[Ln(hfac)3][Cu(hfac)2]2(NIT-3Py-5-4Py)2}n (Ln = Gd 3, Tb 4, Dy 5; NIT-3Py-5-4Py = 2-(5-(4-pyridyl)-3-pyridyl)-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide) was obtained. In the 2D sheet, each NIT-3Py-5-4Py ligand serves as a μ3-bridge to bind one LnIII center by the aminoxyl moiety and two CuII ions through two pyridine groups to form a 2D structure. The LnIII ion is coordinated by two NO units of two radicals in a trans configuration. DC magnetic measurements indicate that ferromagnetic LnIII-NO exchange occurs in 1-5. AC studies reveal that 2 displays slow relaxation of the magnetization while no such magnetic relaxation is found in complex 5. The observed different magnetic relaxation behaviors of two Dy analogues could be attributed to the different coordination modes of NO groups of the radicals, and the coordination geometry of the Dy center is from C2v in 2 to D2d in 5.
Collapse
Affiliation(s)
- Jiao Lu
- Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China.
| | - Pei Jing
- Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China.
| | - Chaoyi Jin
- Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China.
| | - Junfang Xie
- Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China.
| | - Licun Li
- Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China.
| |
Collapse
|
9
|
Mavragani N, Kitos AA, Brusso JL, Murugesu M. Enhancing Magnetic Communication between Metal Centres: The Role of s-Tetrazine Based Radicals as Ligands. Chemistry 2021; 27:5091-5106. [PMID: 33079452 DOI: 10.1002/chem.202004215] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Revised: 10/19/2020] [Indexed: 12/31/2022]
Abstract
Although 1,2,4,5-tetrazines or s-tetrazines have been known in the literature for more than a century, their coordination chemistry has become increasingly popular in recent years due to their unique redox activity, multiple binding sites and their various applications. The electron-poor character of the ring and stabilization of the radical anion through all four nitrogen atoms in their metal complexes provide new aspects in molecular magnetism towards the synthesis of new high performing Single Molecule Magnets (SMMs). The scope of this review is to examine the role of s-tetrazine radical ligands in transition metal and lanthanide based SMMs and provide a critical overview of the progress thus far in this field. As well, general synthetic routes and new insights for the preparation of s-tetrazines are discussed, along with their redox activity and applications in various fields. Concluding remarks along with the limitations and perspectives of these ligands are discussed.
Collapse
Affiliation(s)
- Niki Mavragani
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, 10 Marie Curie, Ottawa, Ontario, K1N 6N5, Canada
| | - Alexandros A Kitos
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, 10 Marie Curie, Ottawa, Ontario, K1N 6N5, Canada
| | - Jaclyn L Brusso
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, 10 Marie Curie, Ottawa, Ontario, K1N 6N5, Canada
| | - Muralee Murugesu
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, 10 Marie Curie, Ottawa, Ontario, K1N 6N5, Canada
| |
Collapse
|
10
|
Xi L, Li H, Sun J, Ma Y, Tang J, Li L. Designing Multicoordinating Nitronyl Nitroxide Radical Toward Multinuclear Lanthanide Aggregates. Inorg Chem 2020; 59:443-451. [PMID: 31846321 DOI: 10.1021/acs.inorgchem.9b02739] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Profiting from a multicoordinating nitronyl nitroxide radical, i.e. a functionalized nitronyl nitroxide biradical ligand, a family of novel tetranuclear lanthanide complexes, formulated as [RE4(hfac)12(NITPhO-3Pybis)2] (RE = Gd 1, Tb 2, Dy 3, Ho 4, and Y 5; NITPhO-3Pybis = 5-(3-pyridinyloxy)-1,3-bis(1'-oxyl-3'-oxido-4',4',5',5'-tetramethyl-4,5-hydro-1H-imidazol-2-yl)benzene; hfac = hexafluoroacetylacetonate) were successfully constructed and characterized. In these complexes, the designed functionalized nitronyl nitroxide biradical ligand functions as the chelating and/or bridging ligand to bind the lanthanide ions, resulting in tetranuclear octa-spin lanthanide complexes with a circle-shaped arrangement. Direct-current magnetic data show that antiferromagnetic interaction dominates in the Gd derivative, while ferromagnetic coupling plays a leading role in complex Y, in which the relevant magnetic exchange parameters were obtained through applicable magnetic models. Dynamic magnetic studies of Tb and Dy analogues exhibit apparent frequency-dependent out-of-phase signals, which are typical features for slow magnetic relaxation behavior. The values of Ueff and τ0 were obtained as follows: Ueff = 10.5 K and τ0 = 6.6 × 10-7 s for the Tb complex and Ueff = 5.2 K and τ0 = 2.5 × 10-6 s for the Dy compound. Intriguingly, the butterfly shaped hysteresis loop is found for the Tb analogue. Guided by fluorescence spectra, the representative peaks are identified for the Tb derivative.
Collapse
Affiliation(s)
- Lu Xi
- Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry, College of Chemistry , Nankai University , Tianjin 300071 , China
| | - Hongdao Li
- Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry, College of Chemistry , Nankai University , Tianjin 300071 , China
| | - Juan Sun
- Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry, College of Chemistry , Nankai University , Tianjin 300071 , China
| | - Yue Ma
- Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry, College of Chemistry , Nankai University , Tianjin 300071 , China
| | - Jinkui Tang
- State Key Laboratory of Rare Earth Resource Utilization , Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun 130022 , China
| | - Licun Li
- Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry, College of Chemistry , Nankai University , Tianjin 300071 , China
| |
Collapse
|
11
|
Sun J, Xie J, Li L, Sutter JP. Single-chain magnet behavior in a 2p–3d–4f spin array with a nitronyl nitroxide biradical. Inorg Chem Front 2020. [DOI: 10.1039/d0qi00098a] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
New nitronyl nitroxide biradical-bridged 3d–4f chains have been constructed in which improved SCM behavior is observed.
Collapse
Affiliation(s)
- Juan Sun
- Department of Chemistry
- Key Laboratory of Advanced Energy Materials Chemistry
- College of Chemistry
- Nankai University
- Tianjin 300071
| | - Jing Xie
- Department of Chemistry
- Key Laboratory of Advanced Energy Materials Chemistry
- College of Chemistry
- Nankai University
- Tianjin 300071
| | - Licun Li
- Department of Chemistry
- Key Laboratory of Advanced Energy Materials Chemistry
- College of Chemistry
- Nankai University
- Tianjin 300071
| | - Jean-Pascal Sutter
- Laboratoire de Chimie de Coordination du CNRS (LCC-CNRS) Université de Toulouse
- CNRS
- Toulouse
- France
| |
Collapse
|
12
|
Wang K, Sun J, Xi L, Lu J, Jing P, Li L. Heterometallic Ln-Cu complexes derived from a phenyl pyrimidyl substituted nitronyl nitroxide biradical. Dalton Trans 2019; 48:14383-14389. [PMID: 31508636 DOI: 10.1039/c9dt03081f] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Utilizing a novel nitronyl nitroxide biradical bisNITPhPyrim involving a pyrimidine group ([5-(5-pyrimidyl)-1,3-bis(1'-oxyl-3'-oxido-4',4',5',5'-tetramethyl-4,5-hydro-1H-imidazol-2-yl)]benzene), three heterometallic Ln-Cu complexes with formulas [Ln(hfac)3Cu(hfac)2(bisNITPhPyrim)] (LnIII = Gd 1, Tb 2, and Dy 3; hfac = hexafluoroacetylacetonate) have been achieved. In these complexes, the CuII ions are linked by N atoms of pyrimidine rings of bisNITPhPyrim radicals to form a one-dimensional chain structure, whereas each LnIII ion is chelated with two neighboring NO groups of two NIT moieties of the radical. Magnetic studies reveal the presence of ferromagnetic interactions between the GdIII ion and coordinated NO groups, and between the pyrimidine-bridged copper(ii) spins, which are quantified by a magnetic model, giving J1 = 4.20 cm-1 and J3 = 0.50 cm-1 (J1 and J3 are magnetic exchanges for GdIII-ON and CuII-CuII, respectively). Interestingly, ac magnetic measurements show that complex 3 exhibits slow relaxation of the magnetization.
Collapse
Affiliation(s)
- Kang Wang
- Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry, Nankai University, Tianjin 300071, China.
| | - Juan Sun
- Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry, Nankai University, Tianjin 300071, China.
| | - Lu Xi
- Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry, Nankai University, Tianjin 300071, China.
| | - Jiao Lu
- Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry, Nankai University, Tianjin 300071, China.
| | - Pei Jing
- Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry, Nankai University, Tianjin 300071, China.
| | - Licun Li
- Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry, Nankai University, Tianjin 300071, China.
| |
Collapse
|
13
|
Meng X, Shi W, Cheng P. Magnetism in one-dimensional metal–nitronyl nitroxide radical system. Coord Chem Rev 2019. [DOI: 10.1016/j.ccr.2018.02.002] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
|
14
|
Kachi-Terajima C, Kimura N, Tomori Y, Akahoshi D, Saito T. Solvent-dependent structures of lanthanide–TCNQ coordination networks and their magnetic properties. J COORD CHEM 2018. [DOI: 10.1080/00958972.2018.1521965] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Chihiro Kachi-Terajima
- Department of Chemistry, Faculty of Science, Toho University, Miyama, Funabashi, Chiba, Japan
- Research Centre for Materials with Integrated Properties, Toho University, Miyama, Funabashi, Chiba, Japan
| | - Norihisa Kimura
- Department of Chemistry, Faculty of Science, Toho University, Miyama, Funabashi, Chiba, Japan
| | - Yuka Tomori
- Department of Chemistry, Faculty of Science, Toho University, Miyama, Funabashi, Chiba, Japan
| | - Daisuke Akahoshi
- Research Centre for Materials with Integrated Properties, Toho University, Miyama, Funabashi, Chiba, Japan
- Department of Physics, Faculty of Science, Toho University, Miyama, Funabashi, Chiba, Japan
| | - Toshiaki Saito
- Research Centre for Materials with Integrated Properties, Toho University, Miyama, Funabashi, Chiba, Japan
- Department of Physics, Faculty of Science, Toho University, Miyama, Funabashi, Chiba, Japan
| |
Collapse
|
15
|
Huang G, Daiguebonne C, Calvez G, Suffren Y, Guillou O, Guizouarn T, Le Guennic B, Cador O, Bernot K. Strong Magnetic Coupling and Single-Molecule-Magnet Behavior in Lanthanide-TEMPO Radical Chains. Inorg Chem 2018; 57:11044-11057. [DOI: 10.1021/acs.inorgchem.8b01640] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Gang Huang
- Univ Rennes, INSA Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) –UMR 6226, F-35000 Rennes, France
| | - Carole Daiguebonne
- Univ Rennes, INSA Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) –UMR 6226, F-35000 Rennes, France
| | - Guillaume Calvez
- Univ Rennes, INSA Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) –UMR 6226, F-35000 Rennes, France
| | - Yan Suffren
- Univ Rennes, INSA Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) –UMR 6226, F-35000 Rennes, France
| | - Olivier Guillou
- Univ Rennes, INSA Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) –UMR 6226, F-35000 Rennes, France
| | - Thierry Guizouarn
- Univ Rennes, INSA Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) –UMR 6226, F-35000 Rennes, France
| | - Boris Le Guennic
- Univ Rennes, INSA Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) –UMR 6226, F-35000 Rennes, France
| | - Olivier Cador
- Univ Rennes, INSA Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) –UMR 6226, F-35000 Rennes, France
| | - Kevin Bernot
- Univ Rennes, INSA Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) –UMR 6226, F-35000 Rennes, France
| |
Collapse
|
16
|
Li H, Sun J, Yang M, Sun Z, Tang J, Ma Y, Li L. Functionalized Nitronyl Nitroxide Biradicals for the Construction of 3d–4f Heterometallic Compounds. Inorg Chem 2018; 57:9757-9765. [DOI: 10.1021/acs.inorgchem.7b03186] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hongdao Li
- Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry and Tianjin Key Laboratory of Metal and Molecule-based Material Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Juan Sun
- Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry and Tianjin Key Laboratory of Metal and Molecule-based Material Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Meng Yang
- Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry and Tianjin Key Laboratory of Metal and Molecule-based Material Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Zan Sun
- Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry and Tianjin Key Laboratory of Metal and Molecule-based Material Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Jinkui Tang
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Yue Ma
- Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry and Tianjin Key Laboratory of Metal and Molecule-based Material Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Licun Li
- Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry and Tianjin Key Laboratory of Metal and Molecule-based Material Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| |
Collapse
|
17
|
Chen PY, Wu MZ, Shi XJ, Tian L. A family of multi-spin rare-earth complexes based on a triazole nitronyl nitroxide radical: synthesis, structure and magnetic properties. RSC Adv 2018; 8:15480-15486. [PMID: 35539480 PMCID: PMC9080062 DOI: 10.1039/c8ra02546k] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2018] [Accepted: 04/12/2018] [Indexed: 01/16/2023] Open
Abstract
The combination of LnIII ions (GdIII, TbIII or DyIII) and a triazole nitronyl nitroxide radical (4-Me-3-NITtrz) as spin carriers results in two mononuclear and one binuclear compounds, namely, [Ln(hfac)3(4-Me-3-NITtrz)(H2O)] (Ln = Gd(1), Tb(2); hfac = hexafluoroacetylacetone; 4-Me-3-NITtrz = 2-[3-(4-methyl-l,2,4-triazolyl)]-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide) and [Dy(hfac)2(4-Me-3-NITtrz)2][Dy(hfac)4]·CHCl3. Compounds 1 and 2 are isostructural and crystallize in the P1̄ space group, whereas compound 3 crystallizes in the P21/n space group. In 1 and 2, the central LnIII ions are nine-coordinated (LnNO8) in a distorted spherical capped square antiprism geometry (C4v) finished by three bischelate hfac anions and one bidentate triazole radical and one aqua molecule. While 3 is a mixed-coordinated binuclear compound with Dy1 in a triangular dodecahedron (D2d) coordination sphere and Dy2 in a biaugmented trigonal prism (C2v) coordination sphere. Magnetic studies show that compound 2 exhibits field-induced single-molecule magnet (SMM) behavior. Three LnIII–triazole–radical complexes have been synthesized, which exhibit interesting magnetic properties. The TbIII complex shows frequency-dependent ac magnetic susceptibilities, which suggests the presence of slow magnetic relaxation.![]()
Collapse
Affiliation(s)
- Peng Yun Chen
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules
- Key Laboratory of Inorganic-Organic Hybrid Functional Materials Chemistry
- Ministry of Education
- Tianjin Normal University
- Tianjin 300387
| | - Ming Ze Wu
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules
- Key Laboratory of Inorganic-Organic Hybrid Functional Materials Chemistry
- Ministry of Education
- Tianjin Normal University
- Tianjin 300387
| | - Xiu Juan Shi
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules
- Key Laboratory of Inorganic-Organic Hybrid Functional Materials Chemistry
- Ministry of Education
- Tianjin Normal University
- Tianjin 300387
| | - Li Tian
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules
- Key Laboratory of Inorganic-Organic Hybrid Functional Materials Chemistry
- Ministry of Education
- Tianjin Normal University
- Tianjin 300387
| |
Collapse
|
18
|
Structure and magnetic properties of two one-dimensional lanthanide-nitronyl nitroxide biradical compounds. INORG CHEM COMMUN 2017. [DOI: 10.1016/j.inoche.2017.06.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
19
|
Li C, Li H, Xie J, Yang M, Wang X, Li L. {[Ln(hfac)3]2[Cu(hfac)2]3(NIT-Pyrim)2(H2O)2} (LnIII= Gd, Ho, Er): Unique Nitronyl Nitroxide Bridged 3d-4f Heterometallic Clusters. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201700576] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Cun Li
- Department of Chemistry; Key Laboratory of Advanced Energy Materials Chemistry and Tianjin Key Laboratory of Metal and Molecule-based Material Chemistry; College of Chemistry; Nankai University; 300071 Tianjin China
| | - Hongdao Li
- Department of Chemistry; Key Laboratory of Advanced Energy Materials Chemistry and Tianjin Key Laboratory of Metal and Molecule-based Material Chemistry; College of Chemistry; Nankai University; 300071 Tianjin China
| | - Jing Xie
- Department of Chemistry; Key Laboratory of Advanced Energy Materials Chemistry and Tianjin Key Laboratory of Metal and Molecule-based Material Chemistry; College of Chemistry; Nankai University; 300071 Tianjin China
| | - Meng Yang
- Department of Chemistry; Key Laboratory of Advanced Energy Materials Chemistry and Tianjin Key Laboratory of Metal and Molecule-based Material Chemistry; College of Chemistry; Nankai University; 300071 Tianjin China
| | - Xiufeng Wang
- Department of Chemistry; Key Laboratory of Advanced Energy Materials Chemistry and Tianjin Key Laboratory of Metal and Molecule-based Material Chemistry; College of Chemistry; Nankai University; 300071 Tianjin China
| | - Licun Li
- Department of Chemistry; Key Laboratory of Advanced Energy Materials Chemistry and Tianjin Key Laboratory of Metal and Molecule-based Material Chemistry; College of Chemistry; Nankai University; 300071 Tianjin China
| |
Collapse
|
20
|
Sun J, Yang M, Sun Z, Wang X, Ma Y, Li L. Unprecedented ferromagnetic Gdnitronyl nitroxide coupling through a hydrogen bonding bridge. Dalton Trans 2017; 46:10189-10192. [PMID: 28726967 DOI: 10.1039/c7dt02232h] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel lanthanide(iii)-nitronyl nitroxide chain {[Gd(hfac)3(Nit-Ph-3,5-bIm)(H2O)]·C4H10O}n (1) was prepared and characterized. Strikingly, an unexpected ferromagnetic coupling between the Gd(iii) ion and the nitroxide group mediated by hydrogen bonding has been observed for the first time.
Collapse
Affiliation(s)
- Juan Sun
- Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry and Tianjin Key Laboratory of Metal and Molecule-based Material Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China.
| | | | | | | | | | | |
Collapse
|
21
|
Jung J, Puget M, Cador O, Bernot K, Calzado CJ, Le Guennic B. Analysis of the Magnetic Exchange Interactions in Yttrium(III) Complexes Containing Nitronyl Nitroxide Radicals. Inorg Chem 2017; 56:6788-6801. [PMID: 28558238 DOI: 10.1021/acs.inorgchem.6b02952] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Julie Jung
- Institut des Sciences Chimiques
de Rennes, UMR 6226 CNRS, Université de Rennes 1, 263 Avenue du Général Leclerc, 35042 Cedex Rennes, France
| | - Marin Puget
- INSA Rennes, Institut des Sciences Chimiques de Rennes, UMR CNRS
6226, 35708 Rennes, France
| | - Olivier Cador
- Institut des Sciences Chimiques
de Rennes, UMR 6226 CNRS, Université de Rennes 1, 263 Avenue du Général Leclerc, 35042 Cedex Rennes, France
| | - Kevin Bernot
- INSA Rennes, Institut des Sciences Chimiques de Rennes, UMR CNRS
6226, 35708 Rennes, France
| | - Carmen J. Calzado
- Departamento de Química Física, Universidad de Sevilla, c/Prof. García González, s/n., 41012 Sevilla, Spain
| | - Boris Le Guennic
- Institut des Sciences Chimiques
de Rennes, UMR 6226 CNRS, Université de Rennes 1, 263 Avenue du Général Leclerc, 35042 Cedex Rennes, France
| |
Collapse
|
22
|
Kanetomo T, Kihara T, Miyake A, Matsuo A, Tokunaga M, Kindo K, Nojiri H, Ishida T. Giant Exchange Coupling Evidenced with a Magnetization Jump at 52 T for a Gadolinium-Nitroxide Chelate. Inorg Chem 2017; 56:3310-3314. [PMID: 28281348 DOI: 10.1021/acs.inorgchem.6b02685] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The Gd-radical complex [GdIII(hfac)3(6bpyNO)] (6bpyNO = 2,2'-bipyridin-6-yl tert-butyl nitroxide; Hhfac = 1,1,1,5,5,5-hexafluoropentane-2,4-dione) showed a magnetization jump at 52 T observed in a pulsed-field facility, corresponding to an exchange coupling constant of -17.4 K. Furthermore, hysteretic behavior due to a relatively slow magnetization reversal was recorded around 2 T. From the high-frequency EPR study, the exchange coupling between Gd and radical spins accompanies an anisotropic character, which is responsible for both the broad jump and the slow magnetization reversal.
Collapse
Affiliation(s)
- Takuya Kanetomo
- Department of Engineering Science, The University of Electro-Communications , Chofu, Tokyo 182-8585, Japan
| | - Takumi Kihara
- Institute for Materials Research, Tohoku University , Sendai, Miyagi 980-8577, Japan
| | - Atsushi Miyake
- Institute for Solid State Physics, The University of Tokyo , Kashiwa, Chiba 277-8581, Japan
| | - Akira Matsuo
- Institute for Solid State Physics, The University of Tokyo , Kashiwa, Chiba 277-8581, Japan
| | - Masashi Tokunaga
- Institute for Solid State Physics, The University of Tokyo , Kashiwa, Chiba 277-8581, Japan
| | - Koichi Kindo
- Institute for Solid State Physics, The University of Tokyo , Kashiwa, Chiba 277-8581, Japan
| | - Hiroyuki Nojiri
- Institute for Materials Research, Tohoku University , Sendai, Miyagi 980-8577, Japan
| | - Takayuki Ishida
- Department of Engineering Science, The University of Electro-Communications , Chofu, Tokyo 182-8585, Japan
| |
Collapse
|
23
|
Zhu M, Li Y, Jia L, Zhang L, Zhang W. Syntheses, crystal structures, and magnetic properties of cyclic dimer Ln2L2 complexes constructed from (3-pyridinylmethoxy)phenyl-substituted nitronyl nitroxide ligands. RSC Adv 2017. [DOI: 10.1039/c7ra06310e] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Herein, five lanthanide-radical cyclic dimer complexes have been obtained and complex Tb shows the relaxation behavior in zero dc field with an anisotropy barrier Δ/kB = 21.6 K.
Collapse
Affiliation(s)
- Mei Zhu
- Department of Chemistry
- Zhejiang Sci-Tech University
- Hangzhou 310018
- China
| | - Yang Li
- Department of Chemistry
- Zhejiang Sci-Tech University
- Hangzhou 310018
- China
| | - Lingjie Jia
- Department of Chemistry
- Zhejiang Sci-Tech University
- Hangzhou 310018
- China
| | - Li Zhang
- Department of Chemistry
- Zhejiang Sci-Tech University
- Hangzhou 310018
- China
| | - Wei Zhang
- Department of Chemistry
- Zhejiang Sci-Tech University
- Hangzhou 310018
- China
| |
Collapse
|
24
|
Li H, Sun J, Yang M, Sun Z, Xie J, Ma Y, Li L. Functionalized nitronyl nitroxide biradical bridged one-dimensional lanthanide chains: slow magnetic relaxation in the Tb and Dy analogues. NEW J CHEM 2017. [DOI: 10.1039/c7nj02006f] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The first examples of Ln-nitronyl nitroxide 1D chains based on the functionalized nitronyl nitroxide biradical have been obtained, and complexes Dy and Tb exhibit slow magnetic relaxation behavior.
Collapse
Affiliation(s)
- Hongdao 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
| | - Juan Sun
- 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
| | - Meng Yang
- 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
| | - Zan Sun
- 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
| | - Jing Xie
- 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
| | - Yue Ma
- 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
| | - 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
| |
Collapse
|
25
|
Wang X, Li H, Sun J, Yang M, Li C, Li L. LnIII–CoII heterometallic chains based on pyridine substituted nitronyl nitroxides. NEW J CHEM 2017. [DOI: 10.1039/c6nj03849b] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Unprecedented nitronyl nitroxide bridged LnIII–CoII compounds have been obtained. Different magnetic relaxation behaviors were observed for two Dy complexes.
Collapse
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
| | - Hongdao 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
| | - Juan Sun
- 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
| | - Meng Yang
- 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
| | - 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
| | - 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
| |
Collapse
|
26
|
Kanetomo T, Yoshitake T, Ishida T. Strongest Ferromagnetic Coupling in Designed Gadolinium(III)–Nitroxide Coordination Compounds. Inorg Chem 2016; 55:8140-6. [DOI: 10.1021/acs.inorgchem.6b01072] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Takuya Kanetomo
- Department
of Engineering Science, The University of Electro-Communications, Chofu, Tokyo 182-8585, Japan
| | - Toru Yoshitake
- Department
of Engineering Science, The University of Electro-Communications, Chofu, Tokyo 182-8585, Japan
| | - Takayuki Ishida
- Department
of Engineering Science, The University of Electro-Communications, Chofu, Tokyo 182-8585, Japan
| |
Collapse
|
27
|
Zhu M, Yang M, Wang J, Li H, Li L. Structural and Magnetic Properties of 2p-3d-4f Hetero-Tri-Spin Chains Comprising [{Cu(hfac)2-Radical}2] Dimers and Ln(hfac)3(hfac=hexafluoroacetylacetonate). Chem Asian J 2016; 11:1900-5. [DOI: 10.1002/asia.201600383] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2016] [Indexed: 11/07/2022]
Affiliation(s)
- Mei Zhu
- Department of Chemistry; Key Laboratory of Advanced Energy Materials Chemistry; Nankai University; Tianjin 300071 China
| | - Meng Yang
- Department of Chemistry; Key Laboratory of Advanced Energy Materials Chemistry; Nankai University; Tianjin 300071 China
| | - Juanjuan Wang
- Department of Chemistry; Key Laboratory of Advanced Energy Materials Chemistry; Nankai University; Tianjin 300071 China
| | - Hongdao Li
- Department of Chemistry; Key Laboratory of Advanced Energy Materials Chemistry; Nankai University; Tianjin 300071 China
| | - Licun Li
- Department of Chemistry; Key Laboratory of Advanced Energy Materials Chemistry; Nankai University; Tianjin 300071 China
| |
Collapse
|
28
|
Zhu M, Li C, Wang X, Li L, Sutter JP. Thermal Magnetic Hysteresis in a Copper-Gadolinium-Radical Chain Compound. Inorg Chem 2016; 55:2676-8. [PMID: 26915061 DOI: 10.1021/acs.inorgchem.6b00004] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Magnetic bistability spanning over a temperature domain of 40 K can result from a small structural deformation of the gadolinium aminoxyl coordination. This is illustrated for a nitronyl nitroxide 3d-4f chain, [Ln(hfac)3Cu(hfac)2(NIT-Pyrim)2] (Ln(III) = Gd, Dy), which is the first example of a bistable lanthanide-based complex.
Collapse
Affiliation(s)
- 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
| | - 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
| | - 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
| | - 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
| | - Jean-Pascal Sutter
- Laboratoire de Chimie de Coordination (LCC), Centre National de la Recherche Scientifique (CNRS) , 205 Route de Narbonne, F-31077 Toulouse, France.,UPS, INPT, LCC, Université de Toulouse , F-31077 Toulouse, France
| |
Collapse
|
29
|
Li T, Zhou SY, Li X, Tian L, Liao DZ, Liu ZY, Guo JH. Modulating spin dynamics of LnIII-radical complexes by using different coligands. RSC Adv 2016. [DOI: 10.1039/c5ra21991d] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Six LnIII-triazole-radical complexes have been synthesized by using different β-diketonate coligand. They exhibit interesting magnetic properties. 3 and 5 show magnetic slow relaxation resembling SMM behavior.
Collapse
Affiliation(s)
- Ting Li
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules
- Key Laboratory of Inorganic–Organic Hybrid Functional Materials Chemistry
- Tianjin Normal University
- Ministry of Education
- Tianjin 300387
| | - Shang Yong Zhou
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules
- Key Laboratory of Inorganic–Organic Hybrid Functional Materials Chemistry
- Tianjin Normal University
- Ministry of Education
- Tianjin 300387
| | - Xin Li
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules
- Key Laboratory of Inorganic–Organic Hybrid Functional Materials Chemistry
- Tianjin Normal University
- Ministry of Education
- Tianjin 300387
| | - Li Tian
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules
- Key Laboratory of Inorganic–Organic Hybrid Functional Materials Chemistry
- Tianjin Normal University
- Ministry of Education
- Tianjin 300387
| | - Dai Zheng Liao
- Department of Chemistry and Key Laboratory of Advanced Energy Materials Chemistry (MOE)
- Nankai University
- Tianjin 300071
- P. R. China
| | - Zhong Yi Liu
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules
- Key Laboratory of Inorganic–Organic Hybrid Functional Materials Chemistry
- Tianjin Normal University
- Ministry of Education
- Tianjin 300387
| | - Jian Hua Guo
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules
- Key Laboratory of Inorganic–Organic Hybrid Functional Materials Chemistry
- Tianjin Normal University
- Ministry of Education
- Tianjin 300387
| |
Collapse
|
30
|
Abstract
The most up-to-date advances in the design and synthesis of molecular magnetic materials by means of a 2p–3d–4f strategy are reviewed.
Collapse
Affiliation(s)
- Mei Zhu
- Department of Chemistry
- Key Laboratory of Advanced Energy Materials Chemistry Nankai University
- Tianjin 300071
- China
- Department of Chemistry
| | - Licun Li
- Department of Chemistry
- Key Laboratory of Advanced Energy Materials Chemistry Nankai University
- Tianjin 300071
- China
| | - Jean-Pascal Sutter
- CNRS
- LCC (Laboratoire de Chimie de Coordination)
- F-31077 Toulouse
- France
- Université de Toulouse
| |
Collapse
|
31
|
Wang Y, Fan Z, Yin X, Wang S, Yang S, Zhang J, Geng L, Shi S. Structure and Magnetic Investigation of a Series of Rare Earth Heterospin Monometallic Compounds of Nitronyl Nitroxide Radical. Z Anorg Allg Chem 2015. [DOI: 10.1002/zaac.201500644] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
32
|
Wang X, Hu P, Li L, Sutter JP. [(Cu-Radical)2-Ln]: Structure and Magnetic Properties of a Hetero-tri-spin Chain of Rings (Ln = YIII, GdIII, TbIII, DyIII). Inorg Chem 2015; 54:9664-9. [DOI: 10.1021/acs.inorgchem.5b01761] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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
| | - Peng Hu
- 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
| | - 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
| | - Jean-Pascal Sutter
- CNRS, LCC (Laboratoire de Chimie de Coordination), 205 Route de Narbonne, F-31077 Toulouse, France
- Université de Toulouse, UPS, INPT, LCC, F-31077 Toulouse, France
| |
Collapse
|
33
|
|
34
|
Wang J, Zhu M, Li C, Zhang J, Li L. Slow Magnetic Relaxation in Pseudo‐One‐Dimensional 2p‐4f Chains Involving π–π Interactions. Eur J Inorg Chem 2015. [DOI: 10.1002/ejic.201403184] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- 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
| | - 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
| | - 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
| | - 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
| | - 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
| |
Collapse
|
35
|
Zhou SY, Li X, Li T, Tian L, Liu ZY, Wang XG. A series of heterospin complexes based on lanthanides and pyridine biradicals: synthesis, structure and magnetic properties. RSC Adv 2015. [DOI: 10.1039/c4ra15074k] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Six LnIII-biradical tri-spin complexes have been synthesized, and they exhibit interesting magnetic properties.
Collapse
Affiliation(s)
- Shang Yong Zhou
- Tianjin Key Laboratory of Structure and Performance for Functional Molecule
- Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry
- Ministry of Education
- College of Chemistry
- Tianjin Normal University
| | - Xin Li
- Tianjin Key Laboratory of Structure and Performance for Functional Molecule
- Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry
- Ministry of Education
- College of Chemistry
- Tianjin Normal University
| | - Ting Li
- Tianjin Key Laboratory of Structure and Performance for Functional Molecule
- Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry
- Ministry of Education
- College of Chemistry
- Tianjin Normal University
| | - Li Tian
- Tianjin Key Laboratory of Structure and Performance for Functional Molecule
- Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry
- Ministry of Education
- College of Chemistry
- Tianjin Normal University
| | - Zhong Yi Liu
- Tianjin Key Laboratory of Structure and Performance for Functional Molecule
- Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry
- Ministry of Education
- College of Chemistry
- Tianjin Normal University
| | - Xiu Guang Wang
- Tianjin Key Laboratory of Structure and Performance for Functional Molecule
- Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry
- Ministry of Education
- College of Chemistry
- Tianjin Normal University
| |
Collapse
|
36
|
Zhu M, Wang J, Yang M, Ma Y, Li L. Slow magnetic relaxation in two-dimensional 3d–4f complexes based on phenyl pyrimidyl substituted nitronyl nitroxide radicals. Dalton Trans 2015; 44:9815-22. [DOI: 10.1039/c4dt03330b] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Three isostructural two-dimensional nitronyl nitroxide bridged 3d–4f complexes have been achieved. The Tb complex shows field-induced two-step magnetic relaxation behavior.
Collapse
Affiliation(s)
- 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
| | - 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
| | - Meng Yang
- 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
| | - Yue Ma
- 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
| | - 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
| |
Collapse
|
37
|
Li X, Li T, Tian L, Liu ZY, Wang XG. A family of rare earth complexes with chelating furan biradicals: syntheses, structures and magnetic properties. RSC Adv 2015. [DOI: 10.1039/c5ra13386f] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Six LnIII–furan-biradical tri-spin complexes have been synthesized, they exhibit interesting magnetic properties. DyIIIcomplex shows frequency-dependent ac magnetic susceptibilities, which suggests the presence of slow magnetic relaxation.
Collapse
Affiliation(s)
- Xin Li
- Tianjin Key Laboratory of Structure and Performance for Functional Molecule
- Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry
- Ministry of Education
- College of Chemistry
- Tianjin Normal University
| | - Ting Li
- Tianjin Key Laboratory of Structure and Performance for Functional Molecule
- Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry
- Ministry of Education
- College of Chemistry
- Tianjin Normal University
| | - Li Tian
- Tianjin Key Laboratory of Structure and Performance for Functional Molecule
- Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry
- Ministry of Education
- College of Chemistry
- Tianjin Normal University
| | - Zhong Yi Liu
- Tianjin Key Laboratory of Structure and Performance for Functional Molecule
- Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry
- Ministry of Education
- College of Chemistry
- Tianjin Normal University
| | - Xiu Guang Wang
- Tianjin Key Laboratory of Structure and Performance for Functional Molecule
- Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry
- Ministry of Education
- College of Chemistry
- Tianjin Normal University
| |
Collapse
|
38
|
Kanetomo T, Ishida T. Strongest Exchange Coupling in Gadolinium(III) and Nitroxide Coordination Compounds. Inorg Chem 2014; 53:10794-6. [DOI: 10.1021/ic501496a] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Takuya Kanetomo
- Department
of Engineering Science, The University of Electro-Communications, Chofu,
Tokyo 182-8585, Japan
| | - Takayuki Ishida
- Department
of Engineering Science, The University of Electro-Communications, Chofu,
Tokyo 182-8585, Japan
| |
Collapse
|
39
|
Meihaus KR, Corbey JF, Fang M, Ziller JW, Long JR, Evans WJ. Influence of an Inner-Sphere K+ Ion on the Magnetic Behavior of N23– Radical-Bridged Dilanthanide Complexes Isolated Using an External Magnetic Field. Inorg Chem 2014; 53:3099-107. [DOI: 10.1021/ic4030102] [Citation(s) in RCA: 74] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Katie R. Meihaus
- Department
of Chemistry, University of California, Berkeley, California 94720-1460, United States
| | - Jordan F. Corbey
- Department
of Chemistry, University of California, Irvine, California 92697-2025, United States
| | - Ming Fang
- Department
of Chemistry, University of California, Irvine, California 92697-2025, United States
| | - Joseph W. Ziller
- Department
of Chemistry, University of California, Irvine, California 92697-2025, United States
| | - Jeffrey R. Long
- Department
of Chemistry, University of California, Berkeley, California 94720-1460, United States
| | - William J. Evans
- Department
of Chemistry, University of California, Irvine, California 92697-2025, United States
| |
Collapse
|
40
|
Ishida T, Murakami R, Kanetomo T, Nojiri H. Magnetic study on radical-gadolinium(III) complexes. Relationship between the exchange coupling and coordination structure. Polyhedron 2013. [DOI: 10.1016/j.poly.2013.04.004] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
41
|
Liu RN, Zhao SP, Xiong CX. Syntheses, crystal structures, and magnetic properties of two monometallic tri-spin complexes involving nitronyl nitroxide radicals-lanthanide ions. RUSS J COORD CHEM+ 2013. [DOI: 10.1134/s1070328413100035] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
42
|
Zhu M, Li YG, Ma Y, Li LC, Liao DZ. Unprecedented Nitronyl Nitroxide Bridged 3d–4f Complexes: Structure and Magnetic Properties. Inorg Chem 2013; 52:12326-8. [DOI: 10.1021/ic402241f] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- 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
| | - Yun-Gai 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
| | - Yue Ma
- 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
| | - Li-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
| | - Dai-Zheng Liao
- 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
| |
Collapse
|
43
|
Wang YL, Gao YY, Ma Y, Wang QL, Li LC, Liao DZ. Syntheses, crystal structures, magnetic and luminescence properties of five novel lanthanide complexes of nitronyl nitroxide radical. J SOLID STATE CHEM 2013. [DOI: 10.1016/j.jssc.2013.03.052] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
44
|
Liu R, Zhao S, Xiong C, Xu J, Li Q, Fang D. Three new one-dimensional lanthanide complexes bridged by nitronyl nitroxide radicals: Crystal structures and magnetic characterization. J Mol Struct 2013. [DOI: 10.1016/j.molstruc.2012.09.034] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
45
|
Tian H, Wang X, Mei X, Liu R, Zhu M, Zhang C, Ma Y, Li L, Liao D. Magnetic Relaxation in TbIIIMagnetic Chains with Nitronyl Nitroxide Radical Bridges That Undergo 3D Antiferromagnetic Ordering. Eur J Inorg Chem 2013. [DOI: 10.1002/ejic.201201223] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
46
|
Mei X, Wang X, Wang J, Ma Y, Li L, Liao D. Dinuclear lanthanide complexes bridged by nitronyl nitroxide radical ligands with 2-phenolate groups: structure and magnetic properties. NEW J CHEM 2013. [DOI: 10.1039/c3nj00739a] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
47
|
Pointillart F, Bernot K, Poneti G, Sessoli R. Crystal Packing Effects on the Magnetic Slow Relaxation of Tb(III)-Nitronyl Nitroxide Radical Cyclic Dinuclear Clusters. Inorg Chem 2012; 51:12218-29. [DOI: 10.1021/ic301394x] [Citation(s) in RCA: 80] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Fabrice Pointillart
- University of Florence, “Ugo Schiff” Chemistry Department & INSTM Research Unit, Via Della Lastruccia 3-13, 50019 Sesto Fiorentino, Florence, Italy
- Organométalliques: Matériaux
et Catalyse, UMR 6226 CNRS-UR1 Institut des Sciences Chimiques de
Rennes, Université de Rennes 1, 35042, Rennes Cedex, France
| | - Kevin Bernot
- University of Florence, “Ugo Schiff” Chemistry Department & INSTM Research Unit, Via Della Lastruccia 3-13, 50019 Sesto Fiorentino, Florence, Italy
- Université Européenne
de Bretagne, Rennes, France
- INSA, SCR, UMR 6226, F-35708
Rennes, France
| | - Giordano Poneti
- University of Florence, “Ugo Schiff” Chemistry Department & INSTM Research Unit, Via Della Lastruccia 3-13, 50019 Sesto Fiorentino, Florence, Italy
- Università
degli Studi
Guglielmo Marconi, Via Plinio 44, 0193 Rome, Italy
| | - Roberta Sessoli
- University of Florence, “Ugo Schiff” Chemistry Department & INSTM Research Unit, Via Della Lastruccia 3-13, 50019 Sesto Fiorentino, Florence, Italy
| |
Collapse
|
48
|
Wang X, Xu P, Bao X, Wang F, Chen Y, Wei Y. Syntheses, Structures, and Properties of Two New Tri-spin Lanthanide-Nitronyl Nitroxide (LnIII= GdIIIand HoIII) Complexes. Z Anorg Allg Chem 2012. [DOI: 10.1002/zaac.201200336] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
49
|
Lukens WW, Magnani N, Booth CH. Application of the Hubbard model to Cp*(2)Yb(bipy), a model system for strong exchange coupling in lanthanide systems. Inorg Chem 2012; 51:10105-10. [PMID: 22988887 DOI: 10.1021/ic300037q] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Exchange coupling is quantified in lanthanide (Ln) single-molecule magnets (SMMs) containing a bridging N(2)(3-) radical ligand and between [Cp*(2)Yb](+) and bipy(•-) in Cp*(2)Yb(bipy), where Cp* is pentamethylcyclopentadienyl and bipy is 2,2'-bipyridyl. In the case of these lanthanide SMMs, the magnitude of exchange coupling between the Ln ion and the bridging N(2)(3-), 2J, is very similar to the barrier to magnetic relaxation, U(eff). A molecular version of the Hubbard model is applied to systems in which unpaired electrons on magnetic metal ions have direct overlap with unpaired electrons residing on ligands. The Hubbard model explicitly addresses electron correlation, which is essential for understanding the magnetic behavior of these complexes. This model is applied quantitatively to Cp*(2)Yb(bipy) to explain its very strong exchange coupling, 2J = -0.11 eV (-920 cm(-1)). The model is also used to explain the presence of strong exchange coupling in Ln SMMs in which the lanthanide spins are coupled via bridging N(2)(3-) radical ligands. The results suggest that increasing the magnetic coupling in lanthanide clusters could lead to an increase in the blocking temperatures of exchange-coupled lanthanide SMMs, suggesting routes to rational design of future lanthanide SMMs.
Collapse
Affiliation(s)
- Wayne W Lukens
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA.
| | | | | |
Collapse
|
50
|
Liu R, Xiong C, Zhao S, Wu J, Li Q, Fang D. Slow magnetic relaxation in one dimensional nitronyl nitroxide-Dy(III) chain suggesting single-chain magnet behavior. INORG CHEM COMMUN 2012. [DOI: 10.1016/j.inoche.2012.05.034] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|