Effect of Ni2+ Doping on the Growth and Properties of Mn-L-Histidine Hydrochloride Monohydrate Crystals. (8th September 2013)

• Record Type: Journal Article
• Authors: Chandra, J. Sai; Prameela Rani, P. N. V. V. L.; Parvathi, V.; Sunandamma, Y.
• Other Names: Wong W. T. Academic Editor.
• Is Part Of: International journal of inorganic chemistry. Volume 2013(2013)
• Publication Date: 2013-09-08
• Subjects: Chemistry, Inorganic -- Periodicals; Chemistry, Inorganic; Periodicals; Electronic journals; 546.05
• DOI: 10.1155/2013/716819
• Languages: English
• ISSNs: 2090-2026

Abstract

Abstract : 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 asa = 1.5301 nm, b = 0.8928 nm andc = 0.6851 nm. From electron paramagnetic resonance (EPR) spectra, isotropic " g " factor and spin hamiltonian parameter A all were calculated as 2.0439 and20 × 10 − 4, respectively. From optical absorption studies, crystal field splitting value (D q ) and the interelectron repulsion parameters B and C were calculated for Ni 2+ and Mn 2+ asD q = 850 cm −1, B = 725 cm −1, C = 2640 cm −1 andD q = 915 cm −1, B = 810 cm −1, C = 2780 cm −1, respectively. The presence of various functional groups and the modes of vibrations were confirmed by FTIR studies.