Synthesis and spectral studies of some rare earth metal complexes of a heterocyclic mesogenic Schiff-base. Issue 8 (3rd August 2017)

• Record Type: Journal Article
• Authors: Karunakar, M.; Yerrasani, Rajasekhar; Singh, Angad Kumar; Dubey, Ragini; Rao, T. R.
• Is Part Of: Inorganic and nano-metal chemistry. Volume 47:Issue 8(2017)
• Page Start: 1260
• Page End: 1265
• Publication Date: 2017-08-03
• Subjects: Mesogenic Schiff's base -- zwitter-ionic coordination -- LnIII complexes; Inorganic compounds -- Synthesis -- Periodicals; Nanostructured materials -- Periodicals; Reactivity (Chemistry) -- Periodicals; Inorganic compounds -- Synthesis; Nanostructured materials; Reactivity (Chemistry); Periodicals; 546
• DOI: 10.1080/24701556.2017.1284122
• Languages: English
• ISSNs: 2470-1556

Abstract

ABSTRACT: A heterocyclic liquid crystalline Schiff's base, N -(4′-(4″-hexyl-1 H -1″, 2″, 3″-triazol))-4-dodecyloxysalicylaldimine (HL), and a series of lanthanide(III) complexes of the type [Ln(LH)3 (NO3 )3 ] (Ln III = La, Pr, Nd, Sm, Eu, Tb, and Dy) have been synthesized and characterized by elemental analyses, mass spectrometry, FTIR, NMR, and UV-Vis spectral techniques. All the complexes involve binding of HL (through phenolate oxygen in zwitter-ionic form) and bidentate chelation of nitrato groups. The ligand exhibits smectic-A (SmA) mesophase over a wide temperature range as evidenced by DSC and polarizing optical microscopic studies. Fluorescence studies show emissions of HL and Tb III complex.