Key Laboratory of Magnetic Molecules and Magnetic Information Material

Linfen, China

Key Laboratory of Magnetic Molecules and Magnetic Information Material

Linfen, China
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Liu D.,Shanxi Normal University | Wang Y.,Shanxi Normal University | Pi C.,Hangzhou Normal University | Zheng W.,Shanxi Normal University | Zheng W.,Key Laboratory of Magnetic Molecules and Magnetic Information Material
Organometallics | Year: 2014

The alkaline earth metal complexes [(η2-3,5-tBu2dp)(μ-Mg)( η1:η1-3,5-tBu2dp)]2 (2), {[(η2-3,5-tBu2dp)(μ- η2:η5-3,5-tBu2dp)(μ- η2:η1-3,5-tBu2dp)Ca]2(μ-Ca)} (3), [Sr(3,5-tBu2dp)2]m (4), [Ba(3,5-tBu2dp)2)]n (5), and [η1-{H(3,5-tBu2dp)}2Ca(η2-3,5-tBu2dp)2] (6), bearing bulky 1,2,4-diazaphospholide ligands [3,5-tBu2dp]- ([3,5-tBu2dp]- = 3,5-di-tert-butyl-1,2,4-diazaphospholide), were prepared. The structures of magnesium and calcium 1,2,4-diazaphospholide complexes represent homoleptic 1,2,4-diazaphospholide alkaline earth metal oligomers with a novel array of metal-ligand binding modes. © 2014 American Chemical Society.


Wang J.-W.,Shanxi Normal University | Ding L.-Y.,Shanxi Normal University | Wang B.-Q.,Shanxi Normal University | He Y.-Y.,Shanxi Normal University | And 4 more authors.
Journal of Molecular Structure | Year: 2014

A few 1H-1,2,4-diazaphospholes H[3,5-R2dp] (R = methyl (5a), p-tolyl (5b), 1-naphthyl (5c), 2-furanyl (5d), 2-thienyl (5e), and isopropyl (5f)) were prepared and structurally characterized by a substantial experimental modification of the synthetic protocol. The molecules of all compounds are linked into oligomers via the bridges of NHâ"̄N hydrogen bonds in solid state. The tetrameric feature of 5a, and 5d-f represents a new motif of hydrogen-bonded 1H-1,2,4-diazaphospholes in solid state. The DFT calculation at the B3LYP/6-311++G** level suggested the possible proton disorder with intermolecular solid state proton transfer (ISSPT) between 1H-1,2,4-diazaphosphole rings. © 2013 Elsevier B.V. All rights reserved.


Liu Q.,Shanxi Normal University | Wu J.,Shanxi Normal University | Li J.,Shanxi Normal University | Wang J.,Shanxi Normal University | And 3 more authors.
Phosphorus, Sulfur and Silicon and the Related Elements | Year: 2014

The reaction of tris(trimethylsilyl)phosphine and a mixture of two different N,N-dimethylalkylamides (1a,b), followed by the treatment with dry hydrazine in situ, resulted in seven asymmetrical 3,5-disubstituted 1H-1,2,4-diazaphospholes (3a-g). Compounds 3a-g are characterized by single crystal X-ray structural analysis. The present protocol provides a general route to this class of molecules without using phosphaalkynes or phosphaalkenes. Copyright © 2014 Taylor & Francis Group, LLC.


Su J.,Shanxi Normal University | Zheng W.,Shanxi Normal University | Zheng W.,Key Laboratory of Magnetic Molecules and Magnetic Information Material | Yang Y.,Central South University
Journal of Organometallic Chemistry | Year: 2015

Several monomeric alkenyl-substituted pyrazolato gallium dichloride [(3,5-tBu2-N-CHC(SiR1R2R3)pz)GaCl2] 2(a-d) (R1 = R2 = R3 = Me (2a); R1 = R2 = R3 = Et (2b); R1 = R2 = Me, R3 = tBu (2c); R1 = R2 = Me, R3 = Ph (2d); 3,5-tBu2pz = 3,5-di-tert-butylpyrazolato) were synthesized in good yields by the reaction of dinuclear gallium compound [(η1,η1-3,5-tBu2pz)GaCl2]2 (1) and two equivalents of substituted ethynes. Compound 2a was further reduced with potassium-sodium alloy to afford a gallium(II) complex [(η1-tBu2pz-N-CHC(SiMe3))ClGa]2 with Ga-Ga single bond (3a). © 2014 Elsevier B.V. All rights reserved.


Wang F.,Shanxi Normal University | Wang F.,Key Laboratory of Magnetic Molecules and Magnetic Information Material | Zhang J.,Shanxi Normal University | Zhang J.,Key Laboratory of Magnetic Molecules and Magnetic Information Material | And 9 more authors.
Applied Surface Science | Year: 2013

We report the fabrication of exchange-coupled graded/soft/graded films with well-isolated magnetic grains. In contrast to the FePt/Fe exchange spring film, a reduction of up to 72% in coercivity value in the graded/soft/graded film can be obtained. Adding C layers with different thicknesses not only tailors the anisotropy gradient, but also refines the grain size and weakens the intergranular exchange interactions. Micromagnetic simulations reveal that the magnetization reversal proceeds by the propagation of a partial domain wall into the hard FePt layers from the center of the soft Fe layer. The formation of partial domain wall can assist the two graded FePt layers to switch simultaneously, resulting in a lower coercivity. © 2013 Elsevier B.V.


Zhao M.,Shanxi Normal University | Wang L.,Shanxi Normal University | Li P.,Shanxi Normal University | Ma J.,Shandong Normal University | And 2 more authors.
Dalton Transactions | Year: 2016

A few heteroleptic, charge-separated heterobimetallic, and polymeric alkali metalate complexes of 1,2,4-diazaphospholide lanthanum(iii), cerium(iii), neodymium(iii), praseodymium(iii), and samarium(iii) were simply prepared via the metathesis reaction of MCl3 (THF)m (m = 1-2) and K[3,5-R2dp] ([3,5-R2dp]- = 3,5-di-substituent-1,2,4-diazaphospholide; R = tBu, Ph) in a varied ratio (1:3, 1:4 and 1:5, respectively) at room temperature in tetrahydrofuran. All the complexes were fully characterized by 1H, 13C{1H}, 31P{1H}, IR, and X-ray single crystal diffraction analysis despite their paramagnetism (excluding La(iii) complexes). The structures of the complexes were found to feature varied coordination modes. The magnetic properties of several compounds were studied by magnetic susceptibility, and the complexes presented the magnetic moments close to or lower than the theoretical values for the free ions in the trivalent oxidation states (Pr3+, Nd3+). This journal is © 2016 The Royal Society of Chemistry.


Zhao M.,Shanxi Normal University | Ma W.,Shanxi Normal University | Liu X.,Shanxi Normal University | Zheng W.,Shanxi Normal University | Zheng W.,Key Laboratory of Magnetic Molecules and Magnetic Information Material
Inorganica Chimica Acta | Year: 2015

Several novel derivatives of bis(N-1,2,4-diazaphosphol-1-yl)methane (bdpm) as well as the first bis(N-1,2,4-diazaphosphol-1-yl)methane metal complexes [Cu(bdpm)2(H2O)2]2+·2ClO4-, [(bdpm)Cu(μ-Cl)Cl]2, and [(bdpm)CoCl2] were prepared and structurally characterized. The complex [Cu(bdpm)2(H2O)2]2+·2ClO4- is with the higher local concentration of low-valent phosphorus(σ2λ3) on the periphery of the molecule. All compounds were characterized using 1H, 13C{1H}, 31P{1H} NMR, IR spectroscopy, and X-ray crystallography. The properties of compounds [Cu(bdpm)2(H2O)2]2+·2ClO4-, [Cu(bdpm)(μ-Cl)Cl], and [Co(bdpm)Cl2] were studied by the EPR spectroscopy and magnetic susceptibility. © 2015 Elsevier B.V.


Zhao M.,Shanxi Normal University | Li P.,Shanxi Normal University | Xie X.,Shanxi Normal University | Su J.,Hefei University of Technology | And 2 more authors.
Polyhedron | Year: 2014

Several novel derivatives of mono- and bis(1,2,4-diazaphosphol-1-yl)pyridine (or pyrazine) as well as the first 2,6-bis(1,2,4-diazaphosphol-1-yl)pyridine (bdppy) and 2,6-bis(1,2,4-diazaphosphol-1-yl)pyrazine (bdppz) metal complexes [Zn(bdppy)2]2+·2ClO4 -and [(bdppz)Cu(NCMe)]2+·2ClO4 -were prepared and structurally characterized. The complex [Zn(bdppy)2]2+·2ClO4 -has a higher local concentration of low-valent phosphorus (σ2λ3) on the periphery of the molecule. All the compounds were characterized using 1H, 13C{1H}, 31P{1H} NMR and IR spectroscopy, and X-ray crystallography. The properties of the compound [(bdppz)Cu(NCMe)]2+·2ClO4 -were studied using EPR spectroscopy and magnetic susceptibility measurements. © 2014 Elsevier B.V. All rights reserved.


Zheng W.,Shanxi Normal University | Zheng W.,Key Laboratory of Magnetic Molecules and Magnetic Information Material | Yang D.,Shanxi Normal University
Inorganica Chimica Acta | Year: 2013

The [Ba(N(SiMe3)2)2]·2THF reacts with 1,2,4-triazole to afford an unusually polymeric 1,2,4-triazolato barium complex [trz2Ba(DMSO)2]∞ (trz = 1,2,4-triazolato) with a 2D coordination network, which consists of two-dimensional [trz2Ba]∞ sheets entrained within the stacked two-dimensional framework of [trz2Ba(DMSO) 2]∞ polymer. Complex [trz2Ba(DMSO) 2]∞ represents the first heavier alkaline earth 1,2,4-triazolato complex with an η2 and η1 bridging coordination. © 2012 Elsevier B.V. All rights reserved.


Li J.,Shanxi Normal University | Kuai W.,Shanxi Normal University | Liu W.,Kunming Institute of Precious Metals | Zheng W.,Shanxi Normal University | Zheng W.,Key Laboratory of Magnetic Molecules and Magnetic Information Material
Organometallics | Year: 2013

A sandwich zwitterionic ruthenium complex (4) was prepared by an intramolecular 1,3-dipolar cycloaddition of the ruthenium azido isocyanide [CpMe5Ru(CNAr)2N3] (2). The reaction involved a formal 1,3-migration mechanism along a highly conjugated system linking to a cyanamido group. © 2013 American Chemical Society.

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