1
|
Wang P, Saber MR, VanNatta PE, Yap GPA, Popescu CV, Scarborough CC, Kieber-Emmons MT, Dunbar KR, Riordan CG. Molecular and Electronic Structures and Single-Molecule Magnet Behavior of Tris(thioether)-Iron Complexes Containing Redox-Active α-Diimine Ligands. Inorg Chem 2021; 60:6480-6491. [PMID: 33840189 DOI: 10.1021/acs.inorgchem.1c00214] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Incorporating radical ligands into metal complexes is one of the emerging trends in the design of single-molecule magnets (SMMs). While significant effort has been expended to generate multinuclear transition metal-based SMMs with bridging radical ligands, less attention has been paid to mononuclear transition metal-radical SMMs. Herein, we describe the first α-diiminato radical-containing mononuclear transition metal SMM, namely, [κ2-PhTttBu]Fe(AdNCHCHNAd) (1), and its analogue [κ2-PhTttBu]Fe(CyNCHCHNCy) (2) (PhTttBu = phenyltris(tert-butylthiomethyl)borate, Ad = adamantyl, and Cy = cyclohexyl). 1 and 2 feature nearly identical geometric and electronic structures, as shown by X-ray crystallography and electronic absorption spectroscopy. A more detailed description of the electronic structure of 1 was obtained through EPR and Mössbauer spectroscopies, SQUID magnetometry, and DFT, TD-DFT, and CAS calculations. 1 and 2 are best described as high-spin iron(II) complexes with antiferromagnetically coupled α-diiminato radical ligands. A strong magnetic exchange coupling between the iron(II) ion and the ligand radical was confirmed in 1, with an estimated coupling constant J < -250 cm-1 (J = -657 cm-1, DFT). Calibrated CAS calculations revealed that the ground-state Fe(II)-α-diiminato radical configuration has significant ionic contributions, which are weighted specifically toward the Fe(I)-neutral α-diimine species. Experimental data and theoretical calculations also suggest that 1 possesses an easy-axis anisotropy, with an axial zero-field splitting parameter D in the range from -4 to-1 cm-1. Finally, dynamic magnetic studies show that 1 exhibits slow magnetic relaxation behavior with an energy barrier close to the theoretical maximum, 2|D|. These results demonstrate that incorporating strongly coupled α-diiminato radicals into mononuclear transition metal complexes can be an effective strategy to prepare SMMs.
Collapse
Affiliation(s)
- Peng Wang
- Department of Chemistry & Biochemistry, University of Delaware, Newark, Delaware 19716, United States
| | - Mohamed R Saber
- Department of Chemistry, Texas A&M University, College Station, Texas 77842-3012, United States.,Department of Chemistry, Fayoum University, Fayoum 63514, Egypt
| | - Peter E VanNatta
- Department of Chemistry, University of Utah, Salt Lake City, Utah 84112-0850, United States
| | - Glenn P A Yap
- Department of Chemistry & Biochemistry, University of Delaware, Newark, Delaware 19716, United States
| | - Codrina V Popescu
- Department of Chemistry, University of Saint Thomas, 2115 Summit Avenue, Saint Paul, Minnesota 55105, United States
| | - Christopher C Scarborough
- Department of Chemistry, Emory University, 1515 Dickey Drive, Atlanta, Georgia 30322, United States.,Syngenta Crop Protection AG, Schaffhauserstrasse, CH-4332 Stein, Switzerland
| | | | - Kim R Dunbar
- Department of Chemistry, Texas A&M University, College Station, Texas 77842-3012, United States
| | - Charles G Riordan
- Department of Chemistry & Biochemistry, University of Delaware, Newark, Delaware 19716, United States
| |
Collapse
|
2
|
Matsia S, Menelaou M, Hatzidimitriou A, Tangoulis V, Lalioti N, Ioannidis N, Blömer L, Kersting B, Salifoglou A. Temperature‐Sensitive Structural Speciation of Cobalt‐Iminodialcohol‐(N,N'‐Aromatic Chelator) Systems: Lattice Architecture and Spectrochemical Properties. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.202000435] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Sevasti Matsia
- School of Chemical Engineering Aristotle University of Thessaloniki 54124 Thessaloniki Greece
| | - Melita Menelaou
- School of Chemical Engineering Aristotle University of Thessaloniki 54124 Thessaloniki Greece
| | | | - Vassilis Tangoulis
- Department of Chemistry Laboratory of Inorganic Chemistry University of Patras 26504 Patras Greece
| | - Nikolia Lalioti
- Department of Chemistry Laboratory of Inorganic Chemistry University of Patras 26504 Patras Greece
| | - Nikolaos Ioannidis
- NCSR “Demokritos” Institute of Nanoscience and Nanotechnology 15310 Attiki Greece
| | - Laura Blömer
- Institut für Anorganische Chemie Universität Leipzig Johannisallee 29 04103 Leipzig Germany
| | - Berthold Kersting
- Institut für Anorganische Chemie Universität Leipzig Johannisallee 29 04103 Leipzig Germany
| | - Athanasios Salifoglou
- School of Chemical Engineering Aristotle University of Thessaloniki 54124 Thessaloniki Greece
| |
Collapse
|
3
|
Dutta S, Mayans J, Ghosh A. Facile synthesis of a new Cu(ii) complex with an unsymmetrical ligand and its use as an O 3 donor metalloligand in the synthesis of Cu(ii)-Mn(ii) complexes: structures, magnetic properties, and catalytic oxidase activities. Dalton Trans 2020; 49:1276-1291. [PMID: 31909778 DOI: 10.1039/c9dt04315b] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new, facile Cu(ii) template method has been employed for the unsymmetrical dicondensation of 1,2-ethylenediamine with salicylaldehyde and o-vanillin. The mononuclear complex, [CuL] (1), thus obtained, has been used as an O3 donor metalloligand for the synthesis of four new Cu(ii)-Mn(ii) complexes, [(CuL)MnCl2] (2), [(CuL)Mn(NO3)2(CH3OH)]n (3), {[(CuL)Mn(benz)(H2O)]2·(CuL)2(ClO4)2} (4) and [(CuL)Mn(benz)Cl]2 (5) (where benz = benzoate). Single-crystal structural analyses reveal that 2 is a dinuclear complex while complex 3 is polymeric with a repeating dinuclear [(CuL)Mn(NO3)2(CH3OH)] unit, linked via the nitrate ion. Both 4 and 5 are discrete tetranuclear complexes, where the dinuclear units [(CuL)Mn(benz)(H2O)] and [(CuL)Mn(benz)Cl] are connected by double benzoate and double chloride bridges, respectively. In complex 4, two monomeric [CuL] units are cocrystallized with the tetranuclear complex. An important difference in the structure of 4 from the other three complexes is that one solvent water molecule is coordinated to each Mn(ii) ion, which makes complex 4 catalytically very active towards mimicking catecholase and phenoxazinone synthase-like oxidation reactions. The turnover numbers (kcat) for the aerial oxidation of 3,5-di-tert-butylcatechol and o-aminophenol are 399 h-1 and 230 h-1, respectively. The evidence of the intermediate species in the mass spectra indicates possible heterometallic cooperation where the Mn(ii) center helps in substrate binding and Cu(ii) participates in the oxidation reactions with molecular oxygen. Cyclic voltammetry measurements suggest the reduction of Cu(ii) to Cu(i) during the catalytic process. Temperature-dependent dc molar magnetic susceptibility measurements reveal that complexes 2-5 are antiferromagnetically coupled with the exchange coupling constants (J) of J = -13.5 cm-1 and J = -13.5 cm-1 for 2 and 3, respectively, J1 = -12.6 cm-1 and J2 = -1.20 cm-1 for complex 4 and J1 = -13.24 cm-1 and J2 = 0.36 cm-1 for complex 5 as is expected from the Cu-O-Mn bridging angles.
Collapse
Affiliation(s)
- Sabarni Dutta
- Department of Chemistry, University College of Science, University of Calcutta, 92, A.P.C. Road, Kolkata 700 009, India.
| | - Júlia Mayans
- Departament de Química Inorgànica I Orgànica, Secció Inorgànica and Institut de Nanosciència I Nanotecnologia (IN2UB), Martíi Franqués 1-11, 08028, Barcelona, Spain
| | - Ashutosh Ghosh
- Department of Chemistry, University College of Science, University of Calcutta, 92, A.P.C. Road, Kolkata 700 009, India.
| |
Collapse
|
4
|
Świtlicka A, Machura B, Kruszynski R, Moliner N, Carbonell JM, Cano J, Lloret F, Julve M. Magneto-structural diversity of Co(ii) compounds with 1-benzylimidazole induced by linear pseudohalide coligands. Inorg Chem Front 2020. [DOI: 10.1039/d0qi00752h] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The magneto-structural diversity of 1-benzylimidazole-containing cobalt(ii) compounds with linear pseudohalide ions (NCS−, NCO−, and N3−) is explored.
Collapse
Affiliation(s)
- Anna Świtlicka
- Department of Crystallography
- Institute of Chemistry
- University of Silesia
- 40-006 Katowice
- Poland
| | - Barbara Machura
- Department of Crystallography
- Institute of Chemistry
- University of Silesia
- 40-006 Katowice
- Poland
| | - Rafał Kruszynski
- Department of X-ray Crystallography and Crystal Chemistry
- Institute of General and Ecological Chemistry
- Lodz University of Technology
- 90-924 Łodz
- Poland
| | - Nicolás Moliner
- Department of Química Inorgànica/Instituto de Ciencia Molecular (ICMol)
- Facultat de Quimica de la Universitat de València
- 46980 Paterna
- Spain
| | - José Miguel Carbonell
- Department of Química Inorgànica/Instituto de Ciencia Molecular (ICMol)
- Facultat de Quimica de la Universitat de València
- 46980 Paterna
- Spain
| | - Joan Cano
- Department of Química Inorgànica/Instituto de Ciencia Molecular (ICMol)
- Facultat de Quimica de la Universitat de València
- 46980 Paterna
- Spain
| | - Francesc Lloret
- Department of Química Inorgànica/Instituto de Ciencia Molecular (ICMol)
- Facultat de Quimica de la Universitat de València
- 46980 Paterna
- Spain
| | - Miguel Julve
- Department of Química Inorgànica/Instituto de Ciencia Molecular (ICMol)
- Facultat de Quimica de la Universitat de València
- 46980 Paterna
- Spain
| |
Collapse
|
5
|
Majumdar D, Das S, Thomas R, Ullah Z, Sreejith S, Das D, Shukla P, Bankura K, Mishra D. Syntheses, X-ray crystal structures of two new Zn(II)-dicyanamide complexes derived from H2vanen-type compartmental ligands: Investigation of thermal, photoluminescence, in vitro cytotoxic effect and DFT-TDDFT studies. Inorganica Chim Acta 2019. [DOI: 10.1016/j.ica.2019.04.041] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
|
6
|
Arunadevi A, Paulpandiyan R, Raman N. Probing of effective pyrazolone based metallonucleases: Molecular docking and in vitro
biological critiques. Appl Organomet Chem 2018. [DOI: 10.1002/aoc.4500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Alagarraj Arunadevi
- Research Department of Chemistry; VHNSN College; Virudhunagar -626 001 India
| | | | - Natarajan Raman
- Research Department of Chemistry; VHNSN College; Virudhunagar -626 001 India
| |
Collapse
|
7
|
Hao YM. Syntheses, Characterization, and Antibacterial Property of Polynuclear Cobalt(III) and Copper(II) Complexes Derived from Similar Tridentate Schiff Bases. RUSS J COORD CHEM+ 2018. [DOI: 10.1134/s1070328418010050] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
8
|
Wu Q, Pu Q, Liu D, Ju HP, Qiao YF, Wang XY, Wu YM, Zou TY, Wang H. Crystal structure of diazido-dimethanolato-bis(μ 2-2-(((3-oxidopropyl)imino)methyl)phenolato-κ 4
O: O, O′,N)dimanganese(III), C 22H 28Mn 2N 8O 6. Z KRIST-NEW CRYST ST 2017. [DOI: 10.1515/ncrs-2017-0049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
C22H28Mn2N8O6, triclinic, P1̅ (no. 2), a = 7.2827(15) Å, b = 8.6433(17) Å, c = 11.410(2) Å, α = 98.58(3)°, β = 96.15(3)°, γ = 107.67(3)°, V = 667.8(2) Å3, Z = 1, R
gt(F) = 0.0414, wR
ref(F
2) = 0.0972, T = 293(2) K.
Collapse
Affiliation(s)
- Qiong Wu
- Department of Chemical Science and Technology , Kunming University , Yunnan , Kunming 65200 , P. R. China
| | - Qing Pu
- Department of Chemical Science and Technology , Kunming University , Yunnan , Kunming 65200 , P. R. China
| | - Dian Liu
- Medical school , Kunming University , Yunnan , Kunming 65200 , P. R. China
| | - Hong-Ping Ju
- Medical school , Kunming University , Yunnan , Kunming 65200 , P. R. China
| | - Yong-Feng Qiao
- Department of Chemical Science and Technology , Kunming University , Yunnan , Kunming 65200 , P. R. China
| | - Xiao-Yan Wang
- Key Laboratory of Yunnan Provincial Higher Education Institutions for Organic Optoelectronic Materials and Devices , Kunming University , Kunming 65200 , P. R. China
| | - Yong-Mei Wu
- School of International Cultures and Education , Yunnan University of Finance and Economics , Yunnan , Kunming 650221 , P. R. China
| | - Tao-Yu Zou
- Key Laboratory of Yunnan Provincial Higher Education Institutions for Organic Optoelectronic Materials and Devices , Kunming University , Kunming 65200 , P. R. China
| | - Hai Wang
- Key Laboratory of Yunnan Provincial Higher Education Institutions for Organic Optoelectronic Materials and Devices , Kunming University , Kunming 65200 , P. R. China
| |
Collapse
|
9
|
Bhattacharjee A, Halder S, Ghosh K, Rizzoli C, Roy P. Mono-, tri- and polynuclear copper(ii) complexes of Schiff-base ligands: synthesis, characterization and catalytic activity towards alcohol oxidation. NEW J CHEM 2017. [DOI: 10.1039/c7nj00846e] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A mononuclear copper(ii) complex acts as a superior catalyst compared to a tri- or polynuclear complex towards oxidation of alcohols to the corresponding aldehydes.
Collapse
Affiliation(s)
| | | | - Koushik Ghosh
- Department of Chemistry
- Jadavpur University
- Jadavpur
- India
| | - Corrado Rizzoli
- Universita' degli Studi di Parma
- Dipartimento S.C.V.S.A
- I-43124 Parma
- Italy
| | - Partha Roy
- Department of Chemistry
- Jadavpur University
- Jadavpur
- India
| |
Collapse
|
10
|
Woods TJ, Ballesteros-Rivas MF, Gómez-Coca S, Ruiz E, Dunbar KR. Relaxation Dynamics of Identical Trigonal Bipyramidal Cobalt Molecules with Different Local Symmetries and Packing Arrangements: Magnetostructural Correlations and ab inito Calculations. J Am Chem Soc 2016; 138:16407-16416. [DOI: 10.1021/jacs.6b10154] [Citation(s) in RCA: 75] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Toby J. Woods
- Department of Chemistry, Texas A&M University, College Station, Texas 77842, United States
| | | | - Silvia Gómez-Coca
- Department of Chemistry, Texas A&M University, College Station, Texas 77842, United States
| | - Eliseo Ruiz
- Departament
de Química Inorgànica i Orgànica and Institut
de Recerca en Química Teòrica i Computacional, Universitat de Barcelona, Barcelona 08028, Spain
| | - Kim R. Dunbar
- Department of Chemistry, Texas A&M University, College Station, Texas 77842, United States
| |
Collapse
|
11
|
Karasawa S, Todo JI, Usui K, Harada N, Yoza K, Suemune H, Koga N. Regioselective Photocyclizations of Di(quinolinyl)arylamines and Tri(quinolinyl)amine with Emission Color Changes and Photoreaction-Induced Self-Assemblies. Chemistry 2016; 22:7771-81. [DOI: 10.1002/chem.201600514] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2016] [Indexed: 01/30/2023]
Affiliation(s)
- Satoru Karasawa
- Graduate School of Pharmaceutical Sciences; Kyushu University; 3-1-1 Maidashi Higashi-ku Fukuoka 812-8582 Japan
- PRESTO; Japan Science and Technology Agency; 4-1-8 Honcho Kawaguchi Saitama 332-0012 Japan
| | - Jun-ichi Todo
- Graduate School of Pharmaceutical Sciences; Kyushu University; 3-1-1 Maidashi Higashi-ku Fukuoka 812-8582 Japan
| | - Kazuteru Usui
- Graduate School of Pharmaceutical Sciences; Kyushu University; 3-1-1 Maidashi Higashi-ku Fukuoka 812-8582 Japan
| | - Naomi Harada
- Graduate School of Pharmaceutical Sciences; Kyushu University; 3-1-1 Maidashi Higashi-ku Fukuoka 812-8582 Japan
| | - Kenji Yoza
- Bruker AXS K.K; 3-9 Moriyacho Kanagawa-ku Yokohama 221-0022 Japan
| | - Hiroshi Suemune
- Graduate School of Pharmaceutical Sciences; Kyushu University; 3-1-1 Maidashi Higashi-ku Fukuoka 812-8582 Japan
| | - Noboru Koga
- Graduate School of Pharmaceutical Sciences; Kyushu University; 3-1-1 Maidashi Higashi-ku Fukuoka 812-8582 Japan
| |
Collapse
|
12
|
Murashima K, Karasawa S, Yoza K, Inagaki Y, Koga N. 3- and 4-(α-diazobenzyl)pyridine-N-oxides as photoresponsive magnetic couplers for 2p–4f heterospin systems: formation of carbene–TbIII and carbene–DyIII single-molecule magnets. Dalton Trans 2016; 45:7067-77. [DOI: 10.1039/c6dt00420b] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Dinuclear TbIII – and DyIII – D1pyO complexes were photolyzed to afford heterospin SMMs with Ueff/kB = 30 and 39 K, respectively.
Collapse
Affiliation(s)
- Kensuke Murashima
- Graduate School of Pharmaceutical Sciences
- Kyushu University
- Fukuoka
- Japan
| | - Satoru Karasawa
- Graduate School of Pharmaceutical Sciences
- Kyushu University
- Fukuoka
- Japan
- PRESTO
| | | | - Yuji Inagaki
- Department of Applied Quantum Physics
- Kyushu University
- Fukuoka
- Japan
| | - Noboru Koga
- Graduate School of Pharmaceutical Sciences
- Kyushu University
- Fukuoka
- Japan
| |
Collapse
|
13
|
Ogawa H, Mori K, Murashima K, Karasawa S, Koga N. One-, Two-, and Three-Dimensional Heterospin Complexes Consisting of 4-(N-tert-Butyloxylamino)pyridine (4NOpy), Dicyanamide Ion (DCA), and 3d Metal Ions: Crystal Structures and Magnetic Properties of [MII(4NOpy)x(DCA)y(CH3CN)z]n (M = Mn, Co, Ni, Cu, Zn). Inorg Chem 2015; 55:717-28. [DOI: 10.1021/acs.inorgchem.5b02159] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Hiraku Ogawa
- Graduate School
of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi,
Higashi-Ku, Fukuoka 812-8582, Japan
| | - Koya Mori
- Graduate School
of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi,
Higashi-Ku, Fukuoka 812-8582, Japan
| | - Kensuke Murashima
- Graduate School
of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi,
Higashi-Ku, Fukuoka 812-8582, Japan
| | - Satoru Karasawa
- Graduate School
of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi,
Higashi-Ku, Fukuoka 812-8582, Japan
- PRESTO, Japan Science and Technology Agency, Kawaguchi 332-0012, Japan
| | - Noboru Koga
- Graduate School
of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi,
Higashi-Ku, Fukuoka 812-8582, Japan
| |
Collapse
|
14
|
Woods TJ, Ballesteros-Rivas MF, Ostrovsky SM, Palii AV, Reu OS, Klokishner SI, Dunbar KR. Strong Direct Magnetic Coupling in a Dinuclear Co(II) Tetrazine Radical Single-Molecule Magnet. Chemistry 2015; 21:10302-5. [PMID: 26073883 DOI: 10.1002/chem.201501726] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2015] [Indexed: 11/05/2022]
Abstract
The ligand-centered radical complex [(CoTPMA)2 -μ-bmtz(.-) ](O3 SCF3 )3 ⋅CH3 CN (bmtz=3,6-bis(2'-pyrimidyl)-1,2,4,5-tetrazine, TPMA=tris-(2-pyridylmethyl)amine) has been synthesized from the neutral bmtz precursor. Single-crystal X-ray diffraction studies have confirmed the presence of the ligand-centered radical. The Co(II) complex exhibits slow paramagnetic relaxation in an applied DC field with a barrier to spin reversal of 39 K. This behavior is a result of strong antiferromagnetic metal-radical coupling combined with positive axial and strong rhombic anisotropic contributions from the Co(II) ions.
Collapse
Affiliation(s)
- Toby J Woods
- Department of Chemistry, Texas A&M University, College Station, TX 77842 (USA) http://www.chem.tamu.edu/rgroup/dunbar/
| | | | - Sergei M Ostrovsky
- Institute of Applied Physics, Academy of Sciences of Moldova, Academy str. 5, Kishinev, MD 2028 (Moldova)
| | - Andrew V Palii
- Institute of Applied Physics, Academy of Sciences of Moldova, Academy str. 5, Kishinev, MD 2028 (Moldova)
| | - Oleg S Reu
- Institute of Applied Physics, Academy of Sciences of Moldova, Academy str. 5, Kishinev, MD 2028 (Moldova)
| | - Sophia I Klokishner
- Institute of Applied Physics, Academy of Sciences of Moldova, Academy str. 5, Kishinev, MD 2028 (Moldova)
| | - Kim R Dunbar
- Department of Chemistry, Texas A&M University, College Station, TX 77842 (USA) http://www.chem.tamu.edu/rgroup/dunbar/.
| |
Collapse
|
15
|
|
16
|
Yoshihara D, Karasawa S, Koga N. Heterospin single-molecule magnet behaviors after irradiation of polymorphous 2:2 cyclic diazo-cobalt(II) complexes. Inorganica Chim Acta 2015. [DOI: 10.1016/j.ica.2015.01.025] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
17
|
Mori K, Eguchi R, Karasawa S, Koga N. Diazopyridine–Ni(ii) complexes exhibiting intra-chain ferromagnetic interaction after irradiation: formation of magnetic gel. Inorg Chem Front 2015. [DOI: 10.1039/c5qi00109a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The gel of a diazopyridine–Ni(ii) complex in EtOH–20% CH2Cl2 solution showed the magnetic behavior of a ferromagnetic chain with the correlation length of 5–6 units after irradiation, suggesting the formation of magnetic gel.
Collapse
Affiliation(s)
- Koya Mori
- Graduate School of Pharmaceutical Sciences
- Kyushu University
- Fukuoka
- 812-8582 Japan
| | - Rumi Eguchi
- Graduate School of Pharmaceutical Sciences
- Kyushu University
- Fukuoka
- 812-8582 Japan
| | - Satoru Karasawa
- Graduate School of Pharmaceutical Sciences
- Kyushu University
- Fukuoka
- 812-8582 Japan
- PRESTO
| | - Noboru Koga
- Graduate School of Pharmaceutical Sciences
- Kyushu University
- Fukuoka
- 812-8582 Japan
| |
Collapse
|