ChemInform Abstract: X-Ray Structure Determination and Magnetic Properties of a New Misfit layered Compound: Yttrium Chromium Sulfide; (Y0.93()0.07S)1.28CrS2.

ChemInform ◽  
2010 ◽  
Vol 26 (15) ◽  
pp. no-no
Author(s):  
A. LAFOND ◽  
C. DEUDON ◽  
A. MEERSCHAUT ◽  
A. SULPICE
Keyword(s):  
Magnetic Properties ◽  
Structure Determination ◽  
Layered Compound ◽  
X Ray ◽  
Chromium Sulfide

X-ray structure determination of a new misfit layer compound: Bismuth chromium sulfide

1992 ◽  
Vol 27 (6) ◽  
pp. 705-713 ◽  
Author(s):  
A. Lafond ◽  
P. Fragnaud ◽  
M. Evain ◽  
A. Meerschaut
Keyword(s):  
Structure Determination ◽  
Layer Compound ◽  
X Ray ◽  
Chromium Sulfide

Synthesis, Structure Determination, and Magnetic Properties of [Cr3(dpa)4Cl2][CuCl2], a Compound Comprising a Trinuclear Chain Cation

2012 ◽  
Vol 67 (8) ◽  
pp. 759-764 ◽  
Author(s):  
Dilahan Aydin-Cantürk ◽  
Hanne Nuss Max-Planck
Keyword(s):  
Crystal Structure ◽  
Magnetic Properties ◽  
Partial Oxidation ◽  
Ethyl Ether ◽  
Structure Determination ◽  
Magnetic Moment ◽  
Effective Magnetic Moment ◽  
X Ray ◽  
Weiss Constant ◽  
Paramagnetic Behavior

The new compound [Cr3(dpa)4Cl2][CuCl2] (1) (dpa = di-2,2'-pyridylamido) was synthesized by reacting Cr2(dpa)4 and anhydrous CuCl2 in dry tetrahydrofuran. Partial oxidation of Cr2(dpa)4 by Cu(II) forms Cr3+ ions, which coordinate to the free N donor atoms of the dpa ligands, and led to the formation of a trinuclear chain cation [Cr3(dpa)4Cl2]+. Recrystallization from CH2Cl2/ethyl ether yielded dark-brown, block-shaped crystals suitable for X-ray structure determination (Pccn (no. 56), a=1246:8(5), b=1487:3(3), c=2184:8(1) pm, V =4051.6(8) ·106 pm3, Z =4). The crystal structure is composed of discrete [Cr3(dpa)4Cl2]+ cations and [CuCl2]- anions. The Cr3 chain comprises quadruply-bonded diamagnetic (Cr2)4+ dimers and a pseudo-octahedrally coordinated, paramagnetic Cr3+ ion, manifesting itself in the effective magnetic moment μeff of 3:54μB (d3, S = 3=2) and the almost ideal Curie-paramagnetic behavior observed between 2 and 300 K with a Weiss constant θ = -0:25(4)K and χ0 = 4:9(7)×10-4 emu mol-1

A two-dimensional CuII–MnIIheterometallic coordination polymer: structure determination using synchrotron X-ray powder diffraction and magnetic properties

CrystEngComm ◽  
2015 ◽  
Vol 17 (38) ◽  
pp. 7423-7429 ◽  
Author(s):  
Marguerite Kalisz ◽  
Rafael A. A. Cassaro ◽  
Miguel A. Novak ◽  
Marius Andruh ◽  
Helio S. Amorim ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Coordination Polymer ◽  
Powder Diffraction ◽  
Structure Determination ◽  
Polymer Structure ◽  
Two Dimensional ◽  
X Ray ◽  
Heterometallic Coordination Polymer

The structure of a magnetic two-dimensional CuII–MnIIheterometallic coordination polymer was solved by using synchrotron X-ray powder diffraction.

Magnetic properties and the distribution of iron ions in voltaites

1976 ◽  
Vol 54 (11) ◽  
pp. 1149-1156 ◽  
Author(s):  
Erika Hermon ◽  
Roland Haddad ◽  
David Simkin ◽  
D. E. Brandão ◽  
W. B. Muir
Keyword(s):  
Magnetic Properties ◽  
Structure Determination ◽  
Site Preference ◽  
Spin Moment ◽  
Iron Ions ◽  
Mossbauer Effect ◽  
Magnetization Measurements ◽  
X Ray ◽  
Magnetic Ions ◽  
Ferrimagnetic Ordering

Four chemically distinct iron voitaites of composition A2R52+Q33+ Al(SO4)12∙18H2O where (A, R, Q) are respectively (K, Fe, Fe) (true voltaite), (K, Fe, In), (NH4, Mn, Fe), and (Tl, Cd, Fe) were prepared by Mereiter who had previously done an X-ray structure determination on this material. These samples were studied by the Mössbauer effect to determine the site preference of Fe2+ and Fe3+ between two nonequivalent octahedrally coordinated sites M(1) and M(2): Magnetization measurements show that the magnetic ions have their free spin moment and that ferrimagnetic ordering takes place below 1 K in the cases where (A, R, Q) in the formula are (K, Fe, Fe), (NH4, Mn, Fe), and possibly in the case (Tl, Cd, Fe). The material (K, Fe, In) is antiferromagnetic with θ = −3 K.

Synthese und Kristallstruktur von MoCl4(DME) · 15-Krone-5 und MoCl4(DME) (DME = 1,2-Dimethoxyethan) / Synthesis and Crystal Structure of MoCl4(DME) · 15-Crown-5 and MoCl4(DME) (DME = 1,2-Dimethoxyethane)

1991 ◽  
Vol 46 (3) ◽  
pp. 307-314 ◽  
Author(s):  
Evamarie Hey-Hawkins ◽  
Hans Georg von Schnering
Keyword(s):  
Crystal Structure ◽  
Magnetic Properties ◽  
Structure Determination ◽  
Unit Cell ◽  
Crystal Data ◽  
Synthesis And Crystal Structure ◽  
Space Group ◽  
X Ray ◽  
Cell Dimensions ◽  
Work Up

NaSi reacts with MoCl5 and 15-crown-5 in toluene with reduction of Mo(V) to Mo(IV). Work-up in DME yields MoCl4(DME)· 15-crown-5 (1). MoCl4(DME) (2) is prepared more conveniently from MoCl5/DME. 1 and 2 were characterized spectroscopically and by X-ray structure determination. Crystal data: 1, space group P212121 (No. 19), Z = 4, 2765 observed independent reflexions, R = 0.026, cell dimensions (110 K): a = 16.292(4), b = 12.884(3), c = 10.452(2) Å. 2, space group I4̄2d (No. 122), Z = 8, 558 observed independent reflexions, R = 0.037, cell dimensions (292 K): a = b = 9.562(2), c = 23.777(6)Å. The MoCl4(DME) molecule of 1 and 2 forms a distorted octahedron. There are four non-coordinating 15-crown-5 molecules present in the unit cell of 1. The UV/VIS spectrum and the magnetic properties of 2 are discussed.

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