The occurrence of paramagnetic and diamagnetic isomers of Bis(N-methylsalicylaldimine)nickel(II)

1958 ◽  
Vol 11 (3) ◽  
pp. 331 ◽  
Author(s):  
CM Harris ◽  
SL Lenzer ◽  
RL Martin
Keyword(s):  
Magnetic Moment ◽  
Room Temperature ◽  
Octahedral Structure ◽  
Marked Contrast ◽  
Coloured Compound

The isolation of a stable well-defined paramagnetic isomer of bis(N-methylsalicyl-aldimine)nickel(II) is reported. This buff coloured compound has a magnetic moment at room temperature of 3.2 B.M., corresponding to the presence of two unpaired spins/Ni atom, and is insoluble in a large variety of solvents in marked contrast to the soluble green diamagnetic isomer. The magnetic moment is nearly independent of temperature in the range 115-350 �K, and probably has its origin in a polymeric, and hence insoluble, octahedral structure involving 4s4p34d2 nickel-bonding orbitals.

scholarly journals Preparation and Spectral Study of New Complexes of Some Metal Ions with 3,5-Dimethyl-1H-Pyrazol-1-yl Phenyl Methanone

2011 ◽  
Vol 8 (4) ◽  
pp. 1005-1011
Author(s):  
Baghdad Science Journal
Keyword(s):  
Magnetic Susceptibility ◽  
Elemental Analysis ◽  
Room Temperature ◽  
Molar Conductivity ◽  
The Other ◽  
Octahedral Structure ◽  
Tetrahedral Structure ◽  
Visible Spectra ◽  
Ft Ir ◽  
Uv Visible

Many complexes of 3,5-dimethyl-1H-pyrazol-1-yl phenyl methanone with Cr(III), Co(II), Ni(II), Cu(II) and Cd(II) were synthesized and characterized by FT-IR, UV/visible spectra, elemental analysis, room temperature magnetic susceptibility and molar conductivity. Cd(II) complex was expected to have tetrahedral structure while all the other complexes were expected to have an octahedral structure.

Fe doping-stabilized γ-Ga2O3 thin films with a high room temperature saturation magnetic moment

2020 ◽  
Vol 8 (2) ◽  
pp. 536-542 ◽  
Author(s):  
Yuanqi Huang ◽  
Ang Gao ◽  
Daoyou Guo ◽  
Xia Lu ◽  
Xiao Zhang ◽  
...  
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Magnetic Moment ◽  
Room Temperature ◽  
Fe Doping ◽  
Saturation Magnetic Moment ◽  
First Time

A thermostable Fe-doped γ-Ga2O3 thin film with a high room temperature saturation magnetic moment of 5.73 μB/Fe has been obtained for the first time.

Effect of Ho dopant on the ferromagnetic characteristics of MoS2 nanocrystals

2019 ◽  
Vol 21 (1) ◽  
pp. 232-237 ◽  
Author(s):  
Qi Zhao ◽  
Chengbo Zhai ◽  
Qing Lu ◽  
Mingzhe Zhang
Keyword(s):  
Magnetic Moment ◽  
Room Temperature ◽  
Doping Concentration ◽  
Room Temperature Ferromagnetism

The as-synthesized Ho-doped MoS2 nanocrystals show intrinsic room-temperature ferromagnetism and their magnetic moment can be tuned by the doping concentration.

Room-Temperature Study of the Magnetic Moment of Ultrathin Fe Films on GaAs

2006 ◽  
Vol 42 (10) ◽  
pp. 2933-2935 ◽  
Author(s):  
J.-B. Laloe ◽  
F. van Belle ◽  
A. Ionescu ◽  
C.A.F. Vaz ◽  
M. Tselepi ◽  
...  
Keyword(s):  
Magnetic Moment ◽  
Room Temperature ◽  
Temperature Study

Ferromagnetism properties of Er-doped ZnO: a GGA + U study

RSC Advances ◽  
2016 ◽  
Vol 6 (109) ◽  
pp. 107865-107870 ◽  
Author(s):  
Sanjun Wang ◽  
Xiaobo Shi ◽  
Jinming Li
Keyword(s):  
Magnetic Moment ◽  
First Principles ◽  
Room Temperature ◽  
Room Temperature Ferromagnetism ◽  
First Principles Calculation ◽  
Doped Zno ◽  
Er Doped ◽  
Zn Vacancy

Our first-principles calculation finds that only the Zn vacancy can induce a 1.0 μB magnetic moment in Er-doped ZnO, which comes from the unpaired 2p electrons at the ligand O atom and results in the room-temperature ferromagnetism property of ZnO.

scholarly journals A room-temperature ferrimagnet made of metallo-proteins?

2016 ◽  
Author(s):  
Michael Winklhofer ◽  
Henrik Mouritsen
Keyword(s):  
Ambient Temperature ◽  
Magnetic Moment ◽  
Room Temperature ◽  
Intrinsic Magnetic Moment

Qin et al. (A magnetic protein compass, Nature Materials 15, 217-226, 2016) claim that "MagR is the first known protein that carries an intrinsic magnetic moment at ambient temperature". We show here that the claim must, unfortunately, be fundamentally wrong.

scholarly journals Investigation on Spectroscopic, Thermal and Antimicrobial Activity of Newly Synthesized Binuclear Cr(III) Metal Ion Complex

2016 ◽  
Vol 8 (2) ◽  
pp. 181-189 ◽  
Author(s):  
M. R. Islam ◽  
J. A. Shampa ◽  
M. Kudrat-E-Zahan ◽  
M. M. Haque ◽  
Y Reza
Keyword(s):  
Magnetic Moment ◽  
Metal Ion ◽  
Water Molecules ◽  
Octahedral Structure ◽  
Diphenylacetic Acid ◽  
Vis Spectroscopy ◽  
Magnetic Moment Measurement ◽  
Tga Analysis ◽  
Secondary Ligand ◽  
Metal Ion Complex

Binuclear Cr(III) metal ion complex was synthesized using diphenylacetic acid as primary ligand and 2-methyl pyridine (2-picoline) as secondary ligand. The synthesized complex was characterized by conductivity, FTIR, UV-Vis spectroscopy, magnetic moment and thermogravimetric analysis (TGA). FTIR spectra indicated the coordination of deprotonated diphenylacetic acid and 2-picoline through nitrogen and oxygen. The presence of water molecules inside the coordination sphere of the complex was confirmed from IR spectrum and TGA analysis. Binuclear and octahedral structure of the Cr(III) complex confirmed by TGA, UV-Vis spectroscopy and magnetic moment measurement. The complex showed moderate antibacterial activity with no antifungal activity.

Spectral, Magnetic and Thermogravimetric Studies of Some Dimeric Oxovanadium(IV) Complexes

1986 ◽  
Vol 41 (11) ◽  
pp. 1443-1446
Author(s):  
P. K. Nath ◽  
N. C. Mishra ◽  
V. Chakravortty ◽  
K. C. Dash
Keyword(s):  
Thermal Decomposition ◽  
Schiff Base ◽  
Ir Spectra ◽  
Magnetic Moment ◽  
Epr Spectroscopy ◽  
Anthranilic Acid ◽  
Room Temperature ◽  
Thermogravimetric Studies ◽  
Epr Signal ◽  
The Stability

Abstract The tridentate dibasic Schiff base anthranilic acid salicylideneimine (H2SB) reacts with VOCl2 in the presence o f NaOAc and imidazole (or its derivatives) to form dimeric oxovanadium (IV) complexes of the type [VO(S B)(D)]2. These green or yellow -green compounds have a magnetic moment of 1.4 B.M . at room temperature, and are non-electrolytes in MeOH . The compounds are characterised on the basis of electronic and IR spectra as well as EPR spectroscopy. The IR spectra shows a strong band due to v(V = O) at 880 cm-1 in addition to the bands of H2SB and imidazole. [VO(SB)(Im)]2 shows a single unresolved EPR signal at g = 1.9715 whereas compounds containing other imidazole derivatives show both a broadening and shifting of the signal. The thermogravimetric measurements indicate the stability of the complexes and their stepwise thermal decomposition.

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