scholarly journals Possible ligand field effects in metal-oxygen vibrations of some first-row transition metal alkoxides

1967 ◽  
Vol 20 (4) ◽  
pp. 773 ◽  
Author(s):  
RW Adams ◽  
RL Martin ◽  
G Winter
Keyword(s):  
Transition Metal ◽  
Ligand Field ◽  
Metal Alkoxides ◽  
Field Effects

Magnetism, electronic spectra, and structure of transition metal alkoxides. I. methoxides and ethoxides of chromium(II), manganese(II), Iron(II), cobalt(II), nickel(II), copper(II), titanium(III), chromium(III), and iron(III)

1966 ◽  
Vol 19 (2) ◽  
pp. 207 ◽  
Author(s):  
RW Adams ◽  
E Bishop ◽  
RL Martin ◽  
G Winter
Keyword(s):  
Transition Metal ◽  
Spectral Data ◽  
Electronic Spectra ◽  
Magnetic Moments ◽  
Field Parameter ◽  
Ligand Field ◽  
Metal Alkoxides ◽  
Infinite Lattices ◽  
Ligand Field Parameter

The magnetic moments and electronic spectra are reported for the following divalent transition metal methoxides: Cr(OCH3)2, Mn(OCH3)2, Fe(OCH3)2, Co(OCH3)2, Ni(OCH3)2, and Cu(OCH3)2. These measurements when coupled with the involatility and insolubility of the compounds favour structures based on infinite lattices composed either of regular (Mn, Fe, Co, and Ni) or distorted (Cr and Cu) MO6 octahedra. The spectral data place the ligand field parameter, Δ, for the methoxide group very close to that of water.

scholarly journals Ligation kinetics as a probe for gas-phase ligand field effects: Ligation of atomic transition metal cations with ammonia at room temperature

2019 ◽  
Vol 25 (1) ◽  
pp. 44-49 ◽  
Author(s):  
Voislav Blagojevic ◽  
Vitali V Lavrov ◽  
Gregory K Koyanagi ◽  
Diethard K Bohme
Keyword(s):  
Transition Metal ◽  
Gas Phase ◽  
Strong Correlation ◽  
Inductively Coupled Plasma ◽  
Metal Cations ◽  
Ligand Field ◽  
Transition Metal Cations ◽  
Inductively Coupled ◽  
Field Effects ◽  
Selected Ion Flow Tube

The kinetics of ammonia ligation to atomic first and second row transition metal cations were measured in an attempt to assess the role of ligand field effects in gas-phase ion-molecule reaction kinetics. Measurements were performed at 295 ± 2 K in helium bath gas at 0.35 Torr using an inductively coupled plasma/selected-ion flow tube tandem mass spectrometer. The atomic cations were produced at ca. 5500 K in an inductively coupled plasma source and were allowed to decay radiatively and to thermalize by collisions with argon and helium atoms prior to reaction. A strong correlation was observed across the periodic table between the measured rate coefficients for ammonia ligation and measured/calculated bond dissociation energies. A similar strong correlation is seen with the ligand field stabilization energy. So ligand field stabilization energies should provide a useful predictor of relative rates of ligation of atomic metal ions.

scholarly journals Correlating Axial and Equatorial Ligand Field Effects to the Single-Molecule Magnet Performances of a Family of Dysprosium Bis-Methanediide Complexes

2021 ◽  
Author(s):  
Lewis Thomas-Hargreaves ◽  
Marcus Giansiracusa ◽  
Matthew Gregson ◽  
Emanuele Zanda ◽  
Felix O'Donnell ◽  
...  
Keyword(s):  
Alkali Metal ◽  
Single Molecule ◽  
Ligand Field ◽  
Single Molecule Magnet ◽  
Field Effects ◽  
Equatorial Ligand ◽  
Metal Alkyls

Treatment of the new methanediide-methanide complex [Dy(SCS)(SCSH)(THF)] (1Dy, SCS = {C(PPh2S)2}2-) with alkali metal alkyls and auxillary ethers produces the bis-methanediide complexes [Dy(SCS)2][Dy(SCS)2(K(DME)2)2] (2Dy), [Dy(SCS)2][Na(DME)3] (3Dy) and [Dy(SCS)2][K(2,2,2-cryptand)] (4Dy). For...

Phase stability of transition metal dichalcogenide by competing ligand field stabilization and charge density wave

2D Materials ◽  
2015 ◽  
Vol 2 (3) ◽  
pp. 035019 ◽  
Author(s):  
Santosh K C ◽  
Chenxi Zhang ◽  
Suklyun Hong ◽  
Robert M Wallace ◽  
Kyeongjae Cho
Keyword(s):  
Transition Metal ◽  
Charge Density ◽  
Phase Stability ◽  
Charge Density Wave ◽  
Density Wave ◽  
Ligand Field ◽  
Transition Metal Dichalcogenide
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