Ligand substituents effect on 10Dq

Shee, N. K., Drew, M. G.B. and Datta, D. (2012) Ligand substituents effect on 10Dq. Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 97. pp. 1111-1114. ISSN 1386-1425 doi: 10.1016/j.saa.2012.07.098

Abstract/Summary

Reaction of 5,6-dihydro-5,6-epoxy-1,10-phenanthroline (L) with Ni(ClO4)(2)center dot 6H(2)O in methanol in 3:1 M proportion at room temperature yields [NiL3](ClO4)(2)center dot 2H(2)O. The X-ray crystal structure of the cation Nil(3)(2+) has been determined. Aminolysis of the three epoxide rings in NiL32+ by 4-substituted anilines in boiling water without any Lewis acid catalyst gives a family of Ni(II) complexes with octahedral NiL62+ core. In these complexes, crystal field splitting 10Dq varies from 11601 to 15798 cm(-1) in acetonitrile. The variation in 10Dq is found to be satisfactorily linear (r(2) = 0.951) with the Hammett sigma(R) parameter of the substituent on the anilino fragment. 10Dq increases with the increase in the electron donation ability of the substituent.

Item Type	Article
URI	https://reading-clone.eprints-hosting.org/id/eprint/30328
Item Type	Article
Refereed	Yes
Divisions	Life Sciences > School of Chemistry, Food and Pharmacy > Department of Chemistry
Uncontrolled Keywords	Nickel(II); Epoxide; Epoxide opening; 10Dq; Hammett parameter
Publisher	Elsevier
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