Nephelauxetic and spectrochemical series for 1,3-diketonates. Ligand field spectra of some tris(1,3-diketonato)chromium(III) chelates

1971 ◽  
Vol 10 (3) ◽  
pp. 478-481 ◽  
Author(s):  
Richard L. Lintvedt ◽  
Nagelo M. Fatta
Keyword(s):  
Ligand Field ◽  
Ligand Field Spectra ◽  
Spectrochemical Series

The Coordination Chemistry of Phosphoryl Compounds Containing the — N(CH3)2 Group, Part VIII

1972 ◽  
Vol 27 (7) ◽  
pp. 759-763 ◽  
Author(s):  
M. W. G. De Bolster ◽  
W. L. Groeneveld
Keyword(s):  
Coordination Chemistry ◽  
General Formula ◽  
Ligand Field ◽  
Chemical Analyses ◽  
X Ray ◽  
Physical Measurements ◽  
Ligand Field Spectra ◽  
Chloride Adduct ◽  
Ligand Field Parameters ◽  
Group Part

A number of new solvates and adducts containing bisphenyldimethylaminophosphine oxide is reported. The solvates have the general formula M[(C6H5)2P(O)N(CH3)2]42+(anion-)2, in which M = Mg, Ca, Mn, Fe, Co, Ni, Cu, Zn and Cd, and the anions are ClO4- and BF4-. The adducts have the general formula M[(C6H5)2P(O)N(CH3)2]2Cl2, where M stands for the same series of metals.The compounds are characterized and identified by chemical analyses and physical measurements.Ligand-field and vibrational spectra have been investigated; values for the ligand-field parameters are reported. It is concluded that coordination takes place via the oxygen atom of the ligand.X-ray powder patterns were used in combination with ligand-field spectra to deduce the coordination around the metal ions.The interesting behaviour of the nickel (II) chloride adduct upon heating is discussed and it is shown that both a square pyramidal and a tetrahedral modification exists.

Cobalt-59 NMR chemical shifts of cobalt(III) complexes; correlations with parameters calculated from ligand-field spectra

1985 ◽  
Vol 107 (9) ◽  
pp. 2780-2787 ◽  
Author(s):  
Richard Bramley ◽  
Michael Brorson ◽  
Alan M. Sargeson ◽  
Claus E. Schaeffer
Keyword(s):  
Chemical Shifts ◽  
Ligand Field ◽  
Nmr Chemical Shifts ◽  
Ligand Field Spectra

The ligand field spectra of trinuclear chromium(III) and iron(III) basic acetates

1969 ◽  
Vol 22 (4) ◽  
pp. 701 ◽  
Author(s):  
L Dubicki ◽  
RL Martin
Keyword(s):  
Field Theory ◽  
Ligand Field ◽  
Ligand Field Theory ◽  
Visible Spectra ◽  
Ligand Field Spectra

The visible spectra of trinuclear chromium(III) acetates [Cr3O(CH3CO2)6R2]+ can be successfully analysed by means of the ligand field theory for tetragonal fields. The ligands R (R = H2O, NH3, py, DMSO) are relatively labile and may be replaced by several ligands of varying donor strength. The spectra of trinuclear iron(III) acetates [Fe3O(CH3CO2)6R3]+ are poorly resolved but can be interpreted on the basis of a d5 configuration in octahedral fields.

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