The importance of ligand-field splitting in the interpretation of the HBr Br3d pre-edge photoabsorption (EELS) spectrum, the Br3d photoelectron spectrum, and the MVV Auger spectrum

1994 ◽  
Vol 67 (2) ◽  
pp. 299-308 ◽  
Author(s):  
Z.F. Liu ◽  
G.M. Bancroft ◽  
K.H. Tan ◽  
M. Schachter
Keyword(s):  
Photoelectron Spectrum ◽  
Auger Spectrum ◽  
Ligand Field ◽  
Field Splitting

scholarly journals Effect of Molecular Distortion of Ligand Field Splitting in Five-Coordinated Metal Complex

2020 ◽  
Vol 835 ◽  
pp. 012022
Author(s):  
Yoshiki Fujikawa ◽  
Dan Tsuneda ◽  
Yuki Tsutsumi ◽  
Momoe Nakano ◽  
Takeyoshi Oguma ◽  
...  
Keyword(s):  
Metal Complex ◽  
Ligand Field ◽  
Field Splitting

Photoabsorption study of ligand-field splitting of Br-3d levels in HBr

1995 ◽  
Vol 28 (12) ◽  
pp. 2425-2433 ◽  
Author(s):  
R Puttner ◽  
M Domke ◽  
K Schulz ◽  
A Gutierrez ◽  
G Kaindl
Keyword(s):  
Ligand Field ◽  
Field Splitting

High- and low-spin complexes with similar, ligands. II. Iron(II) complexes with sterically hindered analogues of 2,2'-bipyridyl

1972 ◽  
Vol 25 (8) ◽  
pp. 1631 ◽  
Author(s):  
CM Harris ◽  
S Kokot ◽  
HRH Patil ◽  
E Sinn ◽  
H Wong
Keyword(s):  
Spectral Data ◽  
High Spin ◽  
Steric Hindrance ◽  
Field Potential ◽  
Ligand Field ◽  
Apparent Difference ◽  
Field Splitting ◽  
Analogous Complex ◽  
Sterically Hindered ◽  
Direct Change

Benzo substitution cis to the nitrogen of 2,2'-bipyridyl (bipy), to form 2-(2'-pyridyl)quinoline (pq), transforms the tris-complex with iron(11) from low spin in Fe(bipy)32+ to essentially high spin but near the crossover in Fe(pq)32+. For this complex, the ligand field splitting near the crossover, Δc is estimated from magnetic and spectral data as c. 12000 cm-l. A similar value but 150 cm-l lower is estimated for the analogous complex with the sterically related ligand 2-methyl-1,10-phenanthroline. This apparent difference in Δ values could arise from a direct change in ligand field potential, or from other factors, such as a change in distortion effects. Due to steric hindrance, pq prefers to form bis-complexes Fe(pq)2X2, pseudooctahedral and high spin, with suitable monodentates, X = Cl2 Br, NCS, ClO4. Double benzo substitution of bipy to form 2,2'-biquinolyl (biq) so increases steric hindrance that the tris-complex could not be formed. Instead biq forms pseudotetrahedral complexes Fe(biq)22+ and Fe(biq)X2 (X = Cl, Br).

HIGH ENERGY MODIFICATIONS OF THE HYDRATES OF ZINC SULFATE

1965 ◽  
Vol 43 (12) ◽  
pp. 3129-3132 ◽  
Author(s):  
J. W. S. Jamieson ◽  
R. A. Lamontagne ◽  
Barbara A. Pattern ◽  
G. R. Brown
Keyword(s):  
Zinc Sulfate ◽  
High Energy ◽  
Crystalline Form ◽  
Ligand Field ◽  
Field Splitting ◽  
Maximum Heat ◽  
Heats Of Solution ◽  
Splitting Energy ◽  
Heat Of Transition ◽  
Vacuum Dehydration

Much higher heats of solution than have previously been observed for hydrates of zinc sulfate have been measured for various new vacuum dehydration products. It is suggested that the maximum heat of transition to normal crystalline form of 82.8 cal/g, 23.8 kcal per mole of heptahydrate, or 8.3 × 103 cm−1 is a satisfactory measure of the ligand field splitting energy for the hexaaquozinc(II) ion.

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