Spectral studies of Fe(III) complexes of dipodal tridentate chelating agents.
The dipodal ligands (Im) and (BIm) as well as complexes [FeLCl(3)] [L=Im (1) and BIm (2)] have been prepared and studied using spectroscopic techniques. The magnetic moment, IR, electronic (ligand field), FAB-mass and NMR spectral data indicate a hexa-coordinate geometry around high-spin state Fe(3+) where the ligands coordinate as a tridentate [N,N,N] chelating agent. (57)Fe-Mössbauer spectral data confirmed the presence of a ligand asymmetry around Fe(3+) in a high-spin state electronic configuration (t(2g)(3),e(g)(2), S=5/2) with nuclear transition Fe(+/-3/2-->+/-1/2) exhibiting Kramer's double degeneracy. The molecular computations provided the optimum energy perspective plots for the molecular geometries giving the important structural data.
Siddiqi
Zafar Ahmad
ZA
Department of Chemistry, Aligarh Muslim University, Aligarh 202002, India. zafarasiddiqi@yahoo.co.in
Kumar
Sarvendra
S
Khalid
M
M
Shahid
M
M
D002614:Chelating Agents / Q000737:chemistry / Q000493:pharmacokinetics*; D005290:Ferric Compounds / Q000737:chemistry* / Q000378:metabolism*; D008024:Ligands; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D008958:Models, Molecular; D015394:Molecular Structure; D013055:Spectrophotometry, Infrared
D002614:Chelating Agents; D005290:Ferric Compounds; D008024:Ligands