Table of Contents
International Journal of Inorganic Chemistry
Volume 2013, Article ID 716819, 5 pages
Research Article

Effect of Ni Doping on the Growth and Properties of Mn-L-Histidine Hydrochloride Monohydrate Crystals

1Department of Chemistry, Acharya Nagarjuna University, Nagarjuna Nagar, Guntur 522 510, India
2Department of Chemistry, Vikrama Simhapuri University, Nellore 524 001, India

Received 13 April 2013; Accepted 30 July 2013

Academic Editor: W. T. Wong

Copyright © 2013 J. Sai Chandra et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The main focus of this work had been to grow good quality crystals from amino acids and amino acid-based materials for nonlinear optics (NLO) applications. For the first time, a series of amino acid complexes doped with transition metal ions were grown in our laboratory from aqueous solutions by slow evaporation technique. Ni(II) ion doped Manganese L-Histidine hydrochloride monohydrate (Ni(II)-MnLHICl) crystals were grown on the same lines and were characterized by powder X-ray diffraction (XRD), optical absorption, electron paramagnetic resonance, and infrared absorption studies. From Powder XRD, the unit cell lattice parameters were calculated as  nm,  nm and  nm. From electron paramagnetic resonance (EPR) spectra, isotropic “g” factor and spin hamiltonian parameter A all were calculated as 2.0439 and , respectively. From optical absorption studies, crystal field splitting value ( ) and the interelectron repulsion parameters B and C were calculated for Ni2+ and Mn2+ as  cm−1,  cm−1,  cm−1 and  cm−1,  cm−1,  cm−1, respectively. The presence of various functional groups and the modes of vibrations were confirmed by FTIR studies.