scholarly journals Magnetic properties of a new cobalt hydrogen vanadate with a dumortierite-like structure: Co13.5(OH)6(H0.5VO3.5)2(VO4)6

2019 ◽  
Vol 75 (6) ◽  
pp. 777-782
Author(s):  
Mohammed Hadouchi ◽  
Abderrazzak Assani ◽  
Mohamed Saadi ◽  
Abdelilah Lahmar ◽  
Mimoun El Marssi ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Magnetic Properties ◽  
Single Crystal ◽  
Magnetic Measurements ◽  
Crystal Form ◽  
X Ray Diffraction ◽  
One Dimensional ◽  
X Ray ◽  
Pyramidal Groups ◽  
Scanning Electron

The magnetic properties of a novel cobalt-based hydrogen vanadate, Co13.5(OH)6(H0.5VO3.5)2(VO4)6, are reported. This new magnetic material was synthesized in single-crystal form using a conventional hydrothermal method. Its crystal structure was determined from single-crystal X-ray diffraction data and was also characterized by scanning electron microscopy. Its crystal framework has a dumortierite-like structure consisting of large hexagonal and trigonal channels; the large hexagonal channels contain one-dimensional chains of face-sharing CoO6 octahedra linked to the framework by rings of VO4 tetrahedra, while the trigonal channels are occupied by chains of disordered V2O4 pyramidal groups. The magnetic properties of this material were investigated by DC magnetic measurements, which indicate the occurrence of antiferromagnetic interactions.

Synthesis, IR spectrum, thermal behaviour and crystal structure of a novel one-dimensional cyano-bridged zinc(II)/nickel(II) complex

2005 ◽  
Vol 220 (1) ◽  
Author(s):  
Ahmet Karadag ◽  
Hümeyra Pasaoglu ◽  
Gökhan Kastas ◽  
Orhan Büyükgüngör
Keyword(s):  
Crystal Structure ◽  
Thermal Analysis ◽  
Coordination Polymer ◽  
Single Crystal ◽  
Ir Spectrum ◽  
Polymeric Chain ◽  
X Ray Diffraction ◽  
Bimetallic Complex ◽  
One Dimensional ◽  
X Ray

AbstractThe cyano-bridged heteronuclear coordination polymer of zinc(II)/nickel(II) has been prepared by N-(2-hydroxyethyl)-ethylendiamine (hydet-en), alternatively named 2-(2-aminoethylamino)-ethanol and characterised by IR and thermal analysis. In the bimetallic complex, the decomposition of hydet-en ligands is seen to be endothermic whereas that of the cyano ligands is found to be exothermic. The crystal structure of the complex has been determined by single-crystal X-ray diffraction. The crystal structure of the zinc(II)-nickel(II) complex consists of a one-dimensional polymeric chain –Zn(hydet-en)

scholarly journals Synthesis, Crystal Structure, and Luminescence of Cadmium(II) and Silver(I) Coordination Polymers Based on 1,3-Bis(1,2,4-triazol-1-yl)adamantane

Molecules ◽  
2021 ◽  
Vol 26 (17) ◽  
pp. 5400
Author(s):  
Roman D. Marchenko ◽  
Taisiya S. Sukhikh ◽  
Alexey A. Ryadun ◽  
Andrei S. Potapov
Keyword(s):  
Crystal Structure ◽  
Coordination Polymer ◽  
Metal Ions ◽  
Single Crystal ◽  
Diffraction Analysis ◽  
Coordination Polymers ◽  
Two Dimensional ◽  
X Ray Diffraction ◽  
One Dimensional ◽  
X Ray

Coordination polymers with a new rigid ligand 1,3-bis(1,2,4-triazol-1-yl)adamantane (L) were prepared by its reaction with cadmium(II) or silver(I) nitrates. Crystal structure of the coordination polymers was determined using single-crystal X-ray diffraction analysis. Silver formed two-dimensional coordination polymer [Ag(L)NO3]n, in which metal ions are linked by 1,3-bis(1,2,4-triazol-1-yl)adamantane ligands, coordinated by nitrogen atoms at positions 2 and 4 of 1,2,4-triazole rings. Layers of the coordination polymer consist of rare 18- and 30-membered {Ag2L2} and {Ag4L4} metallocycles. Cadmium(II) nitrate formed two kinds of one-dimensional coordination polymers depending on the metal-to-ligand ratio used in the synthesis. Coordination polymer [Cd(L)2(NO3)2]n was obtained in case of a 1:2 M:L ratio, while for M:L = 2:1 product {[Cd(L)(NO3)2(CH3OH)]·0.5CH3OH}n was isolated. All coordination polymers demonstrated ligand-centered emission near 450 nm upon excitation at 370 nm.

scholarly journals One-dimensional Coordination Polymer {[Tm2(ttha)(H2O)6Tm2(ttha)(H2O)4] · 21 H2O}n: Synthesis, Crystal Structure, Thermal Behavior and Magnetism (H6ttha = Triethylenetetraminehexaacetic Acid)

1999 ◽  
Vol 23 (8) ◽  
pp. 464-465
Author(s):  
Baoqing Ma ◽  
Song Gao ◽  
Tianzhu Jin ◽  
Zheming Wang ◽  
Tao Yi ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Magnetic Properties ◽  
Coordination Polymer ◽  
Thermal Behavior ◽  
X Ray Diffraction ◽  
One Dimensional ◽  
X Ray ◽  
A Chain ◽  
Chain Compound

The reaction of H6ttha and Tm2O3 gives a chain compound determined by X-ray diffraction; its thermal behavior and magnetic properties are also studied.

Preparation and Magnetic Properties of Electroless Ni-Fe3O4 Composite Plating on Polyester Fabric

2012 ◽  
Vol 557-559 ◽  
pp. 1950-1953
Author(s):  
Ya Ni Li ◽  
Rong Hui Guo ◽  
Jian Wu Lan ◽  
Shou Xiang Jiang ◽  
Shao Jian Lin ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Magnetic Properties ◽  
Polyester Fabric ◽  
Composite Particles ◽  
X Ray Diffraction ◽  
X Ray ◽  
Composite Plating ◽  
Electroless Ni ◽  
The Given ◽  
Scanning Electron

In this study, Ni-Fe3O4 composite particles are deposited on polyester fabric modified with 3-aminopropyltrimethoxysilane (APTMS) by electroless plating. Surface morphology, chemical composition and crystal structure of the Ni-Fe3O4 deposits were investigated by scanning electron microscopy (SEM), energy dispersive X-ray (EDX) and X-ray diffraction (XRD), respectively. The magnetic properties of the Ni-Fe3O4 composite plated polyester fabric are also evaluated. Relatively dense plating was obtained under the given plating conditions. As the Ni-Fe3O4 weight on the treated fabric is 34.28g/m2, the saturation magnetization of the sample was 2.88emu/g.

Crystal Structure and Magnetic Properties of the Compounds Yb(Zn,Al)~6 and YbZn~6

2008 ◽  
Vol 63 (3) ◽  
pp. 237-243 ◽  
Author(s):  
Maria L. Fornasini ◽  
Pietro Manfrinetti ◽  
Donata Mazzone ◽  
Sudesh K. Dhar
Keyword(s):  
Crystal Structure ◽  
Magnetic Properties ◽  
Single Crystal ◽  
Crystal Structures ◽  
Diffraction Data ◽  
X Ray Diffraction ◽  
Space Group ◽  
X Ray

The title compounds were synthesized and their crystal structures determined by single crystal X-ray diffraction data. Both compounds crystallize with the cubic space group Im3̄̅. Yb(Zn,Al)∽6: a = 14.299(4) Å , wR(F2) = 0.041, with Yb25.39(2)Zn138.2(3)Al7.7(3) as the refined composition; YbZn∽6: a = 14.298(4) Å , wR(F2) = 0.079, with Yb25.05(3)Zn146.83(9) as the refined composition. Their crystal structures are closely related to the YCd6 type, with two different details: Zn/Al (or Zn) atoms in the 8c sites center the cubic interstices of the structure; the pentagonal dodecahedron cavities are partially filled by ytterbium atoms in the 2a sites, with an environment topologically similar to that found in the clathrate-I compounds. Magnetic properties of the two compounds are also reported.

scholarly journals Syntheses, Structures, and Magnetic Properties of a Series of Heterotri-, Tetra- and Pentanuclear LnIII–CoII Compounds

Polymers ◽  
2019 ◽  
Vol 11 (2) ◽  
pp. 196 ◽  
Author(s):  
Yun Xu ◽  
Luo Feng ◽  
Ji-Min Zheng
Keyword(s):  
Magnetic Properties ◽  
Ir Spectroscopy ◽  
Single Crystal ◽  
Magnetic Relaxation ◽  
Magnetic Measurements ◽  
Relaxation Behavior ◽  
Structural Motif ◽  
X Ray Diffraction ◽  
Hydrothermal Conditions ◽  
X Ray

Three types of Ln(III)–Co(II) heterometallic compounds, LnCo2(L1)7(bipy)2 (Ln = Pr-1, Eu-2, Sm-3, Gd-4, Tb-5, Dy-6) (L1 = 4-chlorobenzoate, bipy = 2,2′-bipyridine), Ln2Co2(L2)10(bipy)2 (Ln = Sm-7, Gd-8, Tb-9, Dy-10, Ho-11, Er-12, Yb-13), (L2 = 2,4-dichlorobenzoate, bipy = 2,2′-bipyridine, phen = 1,10-phenanthroline), and Ln2Co3(L1)12(bipy)2 (Ln = Ho-14, Er-15, Yb-16), were synthesized under hydrothermal conditions and characterized by single crystal X-ray diffraction, IR spectroscopy and magnetic measurements. Structural analyses revealed that 14–16 take on a unique linear pentanuclear structural motif. Interestingly, the Ho-containing compound 14 exhibits magnetic relaxation behavior.

The synthesis, crystal structure and magnetic properties of a one-dimensional terbium(III)–octacyanidomolybdate(V) assembly

2014 ◽  
Vol 70 (12) ◽  
pp. 1169-1173 ◽  
Author(s):  
Hong Shen
Keyword(s):  
Crystal Structure ◽  
Magnetic Properties ◽  
Ir Spectroscopy ◽  
Coordination Polymer ◽  
Three Dimensional ◽  
X Ray Diffraction ◽  
One Dimensional ◽  
X Ray ◽  
Cyanide Ligands ◽  
Ferromagnetic Interactions

A one-dimensional cyanide-bridged coordination polymer, poly[[aquadi-μ-cyanido-κ4C:N-hexacyanido-κ6C-(dimethylformamide-κO)bis(3,4,7,8-tetramethyl-1,10-phenanthroline-κ2N,N′)terbium(III)molybdate(V)] 4.5-hydrate], [MoTb(CN)8(C16H16N2)2(C3H7NO)(H2O)]·4.5H2O}n, has been prepared and characterized through IR spectroscopy, elemental analysis and single-crystal X-ray diffraction. The compound consists of one-dimensional chains in which cationic [Tb(tmphen)2(DMF)(H2O)]3+(tmphen is 3,4,7,8-tetramethyl-1,10-phenanthroline) and anionic [MoV(CN)8]3−units are linked in an alternating fashion through bridging cyanide ligands. Neighbouring chains are connected by three types of hydrogen bonds (O—H...O, O—H...N and C—H...O) and by π–π interactions to form a three-dimensional supramolecular structure. In addition, magnetic investigations show that ferromagnetic interactions exist in the compound.

Synthesis, crystal structure, and magnetic properties of the complex [(CH3)3NH]2 [Co(NCS)4]

2018 ◽  
Vol 73 (8) ◽  
pp. 571-575
Author(s):  
Yang Jie ◽  
Huang Yuan ◽  
Zhong YouQuan ◽  
Fang Ting ◽  
Hao Fan ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Magnetic Properties ◽  
Magnetic Susceptibility ◽  
Infrared Spectroscopy ◽  
Magnetic Measurements ◽  
X Ray Diffraction ◽  
Magnetic Susceptibility Data ◽  
X Ray ◽  
Susceptibility Data ◽  
Ferromagnetic Interactions

AbstractA new complex [(CH3)3NH]2[Co(NCS)4], in which zero-dimensional [Co(NCS)4]n2− anions are balanced by 2n [(CH3)3NH]+ cations, was synthesized. The complex has been characterized by single X-ray diffraction, infrared spectroscopy, elemental analysis, and magnetic measurements. Magnetic susceptibility data indicate ferromagnetic interactions among the CoII ions.

Syntheses, Characterization and Crystal Structure of Zn (II) Complex Constructed from Ferrocenedicarboxylic Acid

2013 ◽  
Vol 750-752 ◽  
pp. 1104-1108 ◽  
Author(s):  
Feng Rao Lang ◽  
Li Yan You
Keyword(s):  
Crystal Structure ◽  
Single Crystal ◽  
Electronic Properties ◽  
Elemental Analysis ◽  
Luminescence Properties ◽  
Dimensional Chain ◽  
X Ray Diffraction ◽  
One Dimensional ◽  
X Ray ◽  
Mild Conditions

The Zn (II) complex [Zn (O2CFcCO2)(H2O)2]H2O was synthesized with ferrocenedicarboxylic acid under mild conditions. Its crystal structure was characterized by elemental analysis, IR data and X-ray diffraction single crystal structure analyses. The Zn (II) coordination units are connected, forming one-dimensional chain. At the meanwhile, the luminescence properties and the electronic properties were determined.

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