scholarly journals Synthetic Pathway, Structural Chemistry and Structural Elucidation Based Upon Spectral Studies [IR, NMR (1Η, 13C and 119Sn)] of Some Mixed Ligand Complexes of Diorganotin (IV) Derived from Sterically Demanding Heterocyclic ß-Diketones and N-Protected Amino Acids.

2004 ◽  
Vol 27 (2) ◽  
Author(s):  
Anurag Joshi ◽  
Shashi Verma ◽  
Asha Jain ◽  
Sanjiv Saxena
Keyword(s):  
Amino Acids ◽  
Structural Elucidation ◽  
Mixed Ligand ◽  
Structural Chemistry ◽  
Mixed Ligand Complexes ◽  
Spectral Studies ◽  
Synthetic Pathway ◽  
Sterically Demanding

The thermodynamics of the formation of Sm(III) mixed-ligand complexes carrying α-amino acids

2003 ◽  
Vol 355 ◽  
pp. 175-182 ◽  
Author(s):  
Julia Torres ◽  
Carlos Kremer ◽  
Eduardo Kremer ◽  
Sixto Domı́nguez ◽  
Alfredo Mederos ◽  
...  
Keyword(s):  
Amino Acids ◽  
Mixed Ligand ◽  
Mixed Ligand Complexes

f-f spectral studies of holmium(III) complexes

1983 ◽  
Vol 36 (4) ◽  
pp. 695 ◽  
Author(s):  
K Iftikhar ◽  
N Ahmad
Keyword(s):  
Coordination Number ◽  
Oscillator Strength ◽  
Magnetic Moment ◽  
Visible Region ◽  
Mixed Ligand ◽  
Oscillator Strengths ◽  
Mixed Ligand Complexes ◽  
Spectral Studies ◽  
Nitrogen Donors ◽  
Covalency Parameters

Holmium(III) mixed-ligand complexes containing ligands having oxygen and nitrogen donors have been spectrophotometrically investigated. The observed spectra in the visible region have been analysed to calculate covalency parameters (β, b� and δ), oscillator strengths and Judd-Ofelt parameters. The degree of covalency in the complexes increases with increase in coordination number. The hypersensitivity is correlated with the degree of covalency and number of coordinated ligands. The higher values of covalency parameters, oscillator strength and magnetic moment in the ten-coordinate HoIII is taken as evidence of participation of f-orbitals in bonding.

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