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Mikuriya M, Masuda N, Kakuta Y, Minato S, Inui T, Yoshioka D. Mononuclear cobalt(III) complexes with N-salicylidene-2-hydroxy-5-bromobenzylamine and N-salicylidene-2-hydroxy-5-chlorobenzylamine‡. CHEMICAL PAPERS 2016. [DOI: 10.1515/chempap-2015-0164] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Cobalt(III) complexes with
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Ridier K, Gillon B, Gukasov A, Chaboussant G, Cousson A, Luneau D, Borta A, Jacquot JF, Checa R, Chiba Y, Sakiyama H, Mikuriya M. Polarized Neutron Diffraction as a Tool for Mapping Molecular Magnetic Anisotropy: Local Susceptibility Tensors in CoII
Complexes. Chemistry 2015; 22:724-35. [DOI: 10.1002/chem.201503400] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2015] [Indexed: 11/09/2022]
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Mikuriya M, Hamagawa M, Tomioka N, Yoshioka D, Uehara N, Fujimori R, Yamamoto H, Ando Y, Hori S, Kuriyama T, Mitsuhashi R, Handa M. Synthesis, Crystal Structure, and Properties of Copper(II) Complexes with 1,4,7-Tris(2-Aminoethyl)-1,4,7-Triazacyclononane. CHEMISTRY JOURNAL OF MOLDOVA 2015. [DOI: 10.19261/cjm.2015.10(2).04] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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29
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Mikuriya M, Ono K, Kawauchi S, Yoshioka D, Mitsuhashi R, Handa M. Mixed-Metal Pentanuclear Complexes of Ruthenium(II,III) Carboxylate and Tetracyanidoplatinate(II). CHEMISTRY JOURNAL OF MOLDOVA 2015. [DOI: 10.19261/cjm.2015.10(2).05] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Mautner FA, Fischer RC, Mikuriya M, Tomohara S, Deniger LM, Massoud SS. Structural characterization of μ1,2- and μ1,3-bridged-squarato 1D metal(II) coordination polymers. Polyhedron 2015. [DOI: 10.1016/j.poly.2015.07.073] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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31
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Massoud SS, Junk T, Herchel R, Trávníček Z, Mikuriya M, Fischer RC, Mautner FA. Structural characterization of ferromagnetic bridged-acetato and -dichlorido copper(II) complexes based on bicompartmental 4- t -butylphenol. INORG CHEM COMMUN 2015. [DOI: 10.1016/j.inoche.2015.07.010] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Hiraoka Y, Ikeue T, Sakiyama H, Guégan F, Luneau D, Gillon B, Hiromitsu I, Yoshioka D, Mikuriya M, Kataoka Y, Handa M. An unprecedented up-field shift in the 13C NMR spectrum of the carboxyl carbons of the lantern-type dinuclear complex TBA[Ru2(O2CCH3)4Cl2] (TBA+ = tetra(n-butyl)ammonium cation). Dalton Trans 2015; 44:13439-43. [PMID: 26150171 DOI: 10.1039/c5dt01680k] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A large up-field shift (-763 ppm) has been observed for the carboxyl carbons of the dichlorido complex TBA[Ru(2)(O(2)CCH(3))(4)Cl(2)] (TBA(+) = tetra(n-butyl)ammonium cation) in the (13)C NMR spectrum (CD(2)Cl(2) at 25 °C). The DFT calculations showed spin delocalization from the paramagnetic Ru(2)(5+) core to the ligands, in agreement with the large up-field shift.
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Harada Y, Ikeue T, Ide Y, Kimura Y, Hiromitsu I, Yoshioka D, Mikuriya M, Kataoka Y, Handa M. Synthesis, structures, and properties of lantern-type dinuclear ruthenium(II,III) complexes cis-[Ru2{3,5-(CF3)2-pf}2(O2CMe)2Cl] and [Ru2{3,5-(CF3)2-pf}3(O2CMe)Cl], 3,5-(CF3)2-pf−=N,N′-bis[3,5-bis(trifluoromethyl)phenyl]formamidinate anion. Inorganica Chim Acta 2015. [DOI: 10.1016/j.ica.2014.07.076] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Mikuriya M, Schumacher M, Kawano C, Akihara T, Ono K, Yoshioka D, Sakiyama H, Handa M. Dinuclear Nickel(II) Pivalate with Μ-Aqua and Di-Μ-Pivalato Bridges Showing a Ferromagnetic Interaction. CHEMISTRY JOURNAL OF MOLDOVA 2014. [DOI: 10.19261/cjm.2014.09(2).09] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Massoud SS, Junk T, Mikuriya M, Naka Y, Mautner FA. Synthesis, structure and magnetic characterization of dinuclear copper(II) complexes of 2,6-bis[bis(pyridine-2-ylmethyl)aminomethyl]-4-methylphenol. INORG CHEM COMMUN 2014. [DOI: 10.1016/j.inoche.2014.10.027] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Ikeue T, Sawada N, Matsumoto N, Miyazaki A, Sugimori T, Koikawa M, Hiromitsu I, Yoshino K, Mikuriya M, Kataoka Y, Handa M. Synthesis and magnetic properties of an annulated dinuclear copper(II) phthalocyanine peripherally having 2,6-dimethylphenoxy substituents. J PORPHYR PHTHALOCYA 2014. [DOI: 10.1142/s1088424614500485] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
A dinuclear copper(II) phthalocyanine complex with 12 2,6-dimethylphenoxyl groups at the peripheral positions of the [ CuPc ]2 framework, where [ CuPc ] units are linked by a common annulated benzene ring to give the planar dinuclear structure, was prepared and characterized. The introduced bulky 2,6-dimethylphenoxyl groups were revealed to effectively suppress the aggregation of the dinuclear complex in the toluene solution, showing a considerably red-shifted Q-band at 838 nm. The EPR spectrum (measured in the frozen toluene solution at 15 K) and temperature-dependent magnetic moment indicated the existence of antiferromagnetic interaction between the copper(II) ions. The exchange integral J was estimated to be -1.8 cm-1 using Bleaney Bowers equation for the S1 = S2 = 1/2 system. The long-range interaction ( Cu – Cu distance = 10.7 Å) through the common annulated benzene ring between two [ CuPc ] units was confirmed by the DFT calculation result.
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Nakajima T, Seto K, Scheurer A, Kure B, Kajiwara T, Tanase T, Mikuriya M, Sakiyama H. Tetranuclear Nickel and Cobalt Complexes with an Incomplete Double‐Cubane Structure – Homo‐ and Heterometallic Complexes and Their 1D Coordination Polymers. Eur J Inorg Chem 2014. [DOI: 10.1002/ejic.201402536] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Ridier K, Gillon B, Gukasov A, Chaboussant G, Borta A, Iasco O, Luneau D, Sakiyama H, Mikuriya M, Handa M. Polarized Neutron Diffraction study of the molecular magnetic anisotropy. Acta Crystallogr A Found Adv 2014. [DOI: 10.1107/s2053273314097216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023] Open
Abstract
The magnetic anisotropy is a prerequisite for a metal complex to behave as a single-molecule magnet (SMM). Unfortunately, today we do not fully understand the relationships between the local structural parameters and the magnetic anisotropy that results at the molecular level. This is an issue that has become recursive in this area. Out of the synthesis work which is still important, but generates a multiplication of SMMs with frustrating properties, there are various studies to understand these relationships among which most are theoretical studies. In this context, we believe that polarized neutron diffraction (PND) can provide an experimental and complementary point of view to these theoretical studies. PND is indeed well known to allow an accurate determination of the spin density in magnetic compounds and in the field of molecular magnetism it has provided unique information on the pathways and the nature of intra- or intermolecular magnetic coupling [1]. In the case of highly anisotropic paramagnetic materials, where local magnetic moments cannot be aligned by an external magnetic field, that is more tricky, but a method based on local magnetic susceptibility tensor, has been recently developed that allows now analysing the data in this case and obtaining the magnetization distribution [2]. This approach was first used for inorganic compounds. Our idea has been to use this approach to go beyond the reconstruction of spin density to study the magnetic anisotropy in molecular systems. In this paper, we present the results of such an approach applied for the first time to metal complexes that are simple mono and dinuclear cobalt(II) complexes.
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Shongwe MS, Al-Barhi KS, Mikuriya M, Adams H, Morris MJ, Bill E, Molloy KC. Tuning a Single Ligand System to Stabilize Multiple Spin States of Manganese: A First Example of a Hydrazone-Based Manganese(III) Spin-Crossover Complex. Chemistry 2014; 20:9693-701. [DOI: 10.1002/chem.201402634] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2014] [Indexed: 11/07/2022]
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Mikuriya M, Tanaka Y, Yoshioka D, Handa M. Mixed-Metal Complexes of Mixed-Valent Dinuclear Ruthenium(II,III) Carboxylate and Tetracyanidonickelate(II). CHEMISTRY JOURNAL OF MOLDOVA 2014. [DOI: 10.19261/cjm.2014.09(1).11] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Mikuriya M, Nagao N, Kurahashi S, Tabuchi A, Tomohara S, Tsuboi M, Yoshioka D, Sakiyama H, Fuyuhiro A. Mixed-Valent Tetranuclear MnIImnIII3 Complex with 1,3-Diamino-2-Hydroxypropane-N,N’,N”,N”’-Tetraacetic Acid. CHEMISTRY JOURNAL OF MOLDOVA 2014. [DOI: 10.19261/cjm.2014.09(1).12] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Nakai M, Funabiki T, Ohtsuki C, Harada M, Ichimura A, Tanaka R, Nishioka T, Kinoshita I, Mikuriya M, Guo J, Benten H, Ohkita H, Ito S, Obata M, Nakabayashi Y, Yano S. Syntheses, structures, and photochemical properties of (μ3-O)tris{bis(μ-carboxylato)}trimanganese complexes with naphthylacetate ligands with relevance to artificial solar energy-harvesting systems. Inorganica Chim Acta 2013. [DOI: 10.1016/j.ica.2013.07.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Mautner FA, Koikawa M, Mikuriya M, Harrelson EV, Massoud SS. Copper(II)–azido complexes constructed from polypyridyl amine ligands. Polyhedron 2013. [DOI: 10.1016/j.poly.2013.04.033] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Ikeue T, Kimura Y, Karino K, Iida M, Yamaji T, Hiromitsu I, Sugimori T, Yoshioka D, Mikuriya M, Handa M. Structural, magnetic, and 1H NMR spectral study on lantern-type cis- and trans-diruthenium(II,III) complexes with two formamidinato and two acetato bridges. INORG CHEM COMMUN 2013. [DOI: 10.1016/j.inoche.2013.04.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Nakajima T, Seto K, Horikawa F, Shimizu I, Scheurer A, Kure B, Kajiwara T, Tanase T, Mikuriya M. Wheel-Shaped Icosanuclear Homo- and Heterometallic Complexes of NiII, CoII, and CuII Ions Supported by Unsymmetrical Aminoalcohol Ligands. Inorg Chem 2012; 51:12503-10. [DOI: 10.1021/ic3019106] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Massoud SS, Vicente R, Fontenot PR, Gallo AA, Mikuriya M, Albering JH, Mautner FA. Polynuclear croconato-bridged-copper(II) complexes derived from tri- and tetra-dentate amines. Polyhedron 2012. [DOI: 10.1016/j.poly.2012.07.049] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Kurahashi S, Ikeue T, Sugimori T, Takahashi M, Mikuriya M, Handa M, Ikezaki A, Nakamura M. Formation and characterization of five- and six-coordinate iron(III) corrolazine complexes. J PORPHYR PHTHALOCYA 2012. [DOI: 10.1142/s1088424612500460] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Electronic structures of five- and six-coordinate iron(III) corrolazine complexes are determined by means of 1H NMR, 13C NMR, EPR, and Mössbauer spectroscopy as well as SQUID magnetometry. A series of five-coordinate complexes, [FeIII(TBP8Cz)(L)]* where the axial ligands(L) are cyanide(CN-), imidazole(HIm), 1-methylimidazole(1-MeIm), 4-(N,N-dimethylamino)pyridine(DMAP), pyridine(Py), 4-cyanopyridine(4-CNPy), and tert-butylisocyanide(tBuNC), are obtained by the addition of 1 to 2 equiv. of the ligands to the dichloromethane solutions of FeIII(TBP8Cz) at 298 K: TBP8Cz is a trianion of 2,3,7,8,12,13,17,18-octakis(4-tert-butylphenyl)corrolazine. These complexes commonly show the S = 3/2 at 298 K. By contrast, formation of the six-coordinate complexes depends on the nature of the axial ligands. While the addition of 3 equiv. of CN- has completely converted FeIII(TBP8Cz) to (Bu4N)2[FeIII(TBP8Cz)(CN)2] at 298 K, the conversion to the bis-adduct is only attained below ca. 200 K in the case of HIm, 1-MeIm, and DMAP even in the presence of 50 equiv. of the ligands. If the axial ligand is Py, 4-CNPy, or tBuNC, the formation of [FeIII(TBP8Cz)(L)2] is confirmed only at an extremely low temperature (15 K). Close inspection of the 1H NMR and EPR spectra has revealed that all the bis-adducts adopt the (dxy)2(dxz, dyz)3 ground state. While FeIII(TBP8Cz) forms paramagnetic bis- and mono-adduct in toluene solution at 298 K in the presence of excess amount of CN- and tBuNC, respectively, the corresponding porphyrazine complex, [FeIII(TBP8Pz)]Cl , forms diamagnetic bis-CN and bis-tBuNC under the same conditions: TBP8Pz is a dianion of 2,3,7,8,12,13,17,18-octakis(4-tert-butylphenyl)-porphyrazine. Thus, the iron(III) ion of porphyrazine complex is more easily reduced than that of the corresponding corrolazine complex.
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Shongwe MS, Al-Rahbi SH, Al-Azani MA, Al-Muharbi AA, Al-Mjeni F, Matoga D, Gismelseed A, Al-Omari IA, Yousif A, Adams H, Morris MJ, Mikuriya M. Coordination versatility of tridentate pyridyl aroylhydrazones towards iron: tracking down the elusive aroylhydrazono-based ferric spin-crossover molecular materials. Dalton Trans 2012; 41:2500-14. [DOI: 10.1039/c1dt11407g] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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Takemura Y, Okui Y, Kure B, Nakajima T, Tanase T, Mikuriya M, Takahashi M. Octanuclear iron(III) complexes supported by Kemp’s tricarboxylate ligands. Inorganica Chim Acta 2011. [DOI: 10.1016/j.ica.2011.09.028] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Okui Y, Catusanu FA, Kubota R, Kure B, Nakajima T, Tanase T, Kajiwara T, Mikuriya M, Miyasaka H, Yamashita M. Systematic Expansion of Supercubane Cores in Manganese Oxo Clusters with Tricarboxylate Ligands. Eur J Inorg Chem 2011. [DOI: 10.1002/ejic.201100781] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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