scholarly journals Magnetic Moments and d–d Bands of Copper(II) Halide Complexes with Substituted PyridineN-Oxides and Some Related Ligands

1969 ◽  
Vol 42 (2) ◽  
pp. 417-431 ◽  
Author(s):  
Yoneichiro Muto ◽  
Michinobu Kato ◽  
Hans B. Jonassen ◽  
Louis Chopin Cusachs
Keyword(s):  
Magnetic Moments ◽  
Halide Complexes

Magnetic Moments of Some Copper(II) Halide Complexes with Substituted PyridineN-Oxides

1967 ◽  
Vol 40 (6) ◽  
pp. 1535-1536 ◽  
Author(s):  
Yoneichiro Muto ◽  
Michinobu Kato ◽  
Hans B. Jonassen ◽  
H. N. Ramaswamy
Keyword(s):  
Magnetic Moments ◽  
Halide Complexes

Coordination properties of β-alanine: new complexes with some transition metals cobalt(II), nickel(II), and copper(II)

1976 ◽  
Vol 54 (15) ◽  
pp. 2426-2431 ◽  
Author(s):  
Giuseppe Marcotrigiano ◽  
Ledi Menabue ◽  
Gian Carlo Pellacani
Keyword(s):  
Transition Metals ◽  
Carboxy Group ◽  
Electronic Spectra ◽  
Magnetic Moments ◽  
Chelating Agent ◽  
Neutral Ligand ◽  
Coordination Properties ◽  
Halide Complexes

The neutral six-coordinated tetragonal Co(β-ala)2•2H2O complex(β-ala = NH2CH2CH2COO−) was prepared. In this complex β-alanine acts as an O,N-chelating agent, as in the known Cu(β-ala)2•6H2O and Ni(β-ala)2•3H2O complexes. We also prepared some complexes of a type that is new for β-alanine, with stoichiometries such as M(β-alaH)2X2, M(β-alaH)4(ClO4)2 (M = Co and Ni), Cu(β-alaH)3(ClO4)2, and Cu(β-alaH)Cl2[Formula: see text] in which the ligand acts as a zwitterion and coordinates toward the carboxy group as a formally neutral ligand. The possibility of formulating the complexes as H2[M(β-ala)2X2] is discussed. The electronic spectra and the magnetic moments of the halide complexes are in accord with pseudo-tetrahedral, octahedral, and tetragonal stereochemistry for the cobalt(II), nickel(II), and copper(II) ions, respectively, while those of the perchlorate complexes are in accord with pseudooctahedral stereochemistry. The β-alanine hydrohalide salts and the bis(β-alaninium)tetrachlorocuprate complex were also prepared and are discussed.

The effect of Tin additionon on Structural and magnetic properties of the stannoferrite Li0.5+0.5XFe2.5-1.5XSnXO4

2016 ◽  
Vol 12 (3) ◽  
pp. 4307-4321 ◽  
Author(s):  
Ahmed Hassan Ibrahim ◽  
Yehia Abbas
Keyword(s):  
Particle Size ◽  
Fine Particles ◽  
Magnetic Moments ◽  
Lithium Ferrite ◽  
Tem Analysis ◽  
Weiss Temperature ◽  
X Ray ◽  
Two Phases ◽  
Nanocrystalline Ferrite ◽  
20 Nm

The physical properties of ferrites are verysensitive to microstructure, which in turn critically dependson the manufacturing process.Nanocrystalline Lithium Stannoferrite system Li0.5+0.5XFe2.5-1.5XSnXO4,X= (0, 0.2, 0.4, 0.6, 0.8 and 1.0) fine particles were successfully prepared by double sintering ceramic technique at pre-sintering temperature of 500oC for 3 h andthepre-sintered material was crushed and sintered finally in air at 1000oC.The structural and microstructural evolutions of the nanophase have been studied using X-ray powder diffraction (XRD) and the Rietveld method.The refinement results showed that the nanocrystalline ferrite has a two phases of ordered and disordered phases for polymorphous lithium Stannoferrite.The particle size of as obtained samples were found to be ~20 nm through TEM that increases up to ~ 85 nmand isdependent on the annealing temperature. TEM micrograph reveals that the grains of sample are spherical in shape. (TEM) analysis confirmed the X-ray results.The particle size of stannic substituted lithium ferrite fine particle obtained from the XRD using Scherrer equation.Magneticmeasurements obtained from lake shore’s vibrating sample magnetometer (VSM), saturation magnetization ofordered LiFe5O8 was found to be (57.829 emu/g) which was lower than disordered LiFe5O8(62.848 emu/g).Theinterplay between superexchange interactions of Fe3+ ions at A and B sublattices gives rise to ferrimagnetic ordering of magnetic moments,with a high Curie-Weiss temperature (TCW ~ 900 K).

High Purity Solvent-Coordinated Tin Halide Complexes for Lead Free Perovskite Solar Cells

2017 ◽  
Author(s):  
Jiewei Liu ◽  
Masashi Ozaki ◽  
Yukie Katsuki ◽  
Taketo Handa ◽  
Ryosuke Nishikubo ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Purity ◽  
Perovskite Solar Cells ◽  
Lead Free ◽  
Halide Complexes

Negative magnetoresistance in insulating CdSe and localized magnetic moments

2008 ◽  
Vol 33 (4) ◽  
pp. 351-356
Author(s):  
Rachid Abdia ◽  
Ablehamid El Kaaouachi ◽  
Abdelhakim Nafidi ◽  
Gérard Biskupski ◽  
Jamal Hemine
Keyword(s):  
Magnetic Moments ◽  
Negative Magnetoresistance

Coordination Compounds of Some 3d-Transition Metal Ions with N1-[4-(4-bromo-phenylsulfonyl)-benzoyl]-N4-(4-methoxyphenyl)- thiosemicarbazide

2008 ◽  
Vol 59 (7) ◽  
Author(s):  
Madalina Angelusiu ◽  
Maria Negoiu ◽  
Stefania-Felicia Barbuceanu ◽  
Tudor Rosu
Keyword(s):  
Coordination Compounds ◽  
Magnetic Moments ◽  
Thermo Gravimetric Analysis ◽  
Electronic Spectroscopy ◽  
Transition Metal Ions ◽  
Synthesis And Characterization ◽  
Gravimetric Analysis ◽  
Thermo Gravimetric ◽  
New Compounds

The paper presents the synthesis and characterization of Cu(II), Co(II), Ni(II), Cd(II), Zn(II) and Hg(II) complexes with N1-[4-(4-bromo-phenylsulfonyl)-benzoyl]-N4-(4-methoxyphenyl)-thiosemicarbazide. The new compounds were characterized by IR, EPR, electronic spectroscopy, magnetic moments, thermo-gravimetric analysis and elemental analysis.

Sign in / Sign up

Export Citation Format

Share Document