Reinvestigation of growth of thiourea urea zinc sulfate crystal.
Reinvestigation of the growth of thiourea urea zinc sulfate crystal is reported. Aqueous reaction of thiourea, urea and zinc sulfate in 1:1:1 mol ratio results in the formation of the well known [Zn(tu)3(SO4)] (1) (tu=thiourea) crystal and not the 'so called' novel semiorganic nonlinear optical thiourea urea zinc sulfate (2) crystal, as claimed by Redrothu Hanumantha Rao, S. Kalainathan, Spectroscopic investigation, nucleation, growth, optical, thermal and second harmonic studies of novel semi-organic nonlinear optical crystal - Thiourea urea zinc sulfate, Spectrochim. Acta A97 (2012) 456-463. In this work, we demonstrate the usefulness of elemental analytical data, infrared and NMR spectra and X-ray powder pattern, for accurate product characterization.
Department of Chemistry, Goa University, Goa 403206, India. Electronic address: srini@unigoa.ac.in.
Bikshandarkoil R
BR
Srinivasan
Teja A
TA
Naik
Zbigniew
Z
Tylczyński
K R
KR
Priolkar
D003460:Crystallization; D018360:Crystallography, X-Ray; D009682:Magnetic Resonance Spectroscopy; D008855:Microscopy, Electron, Scanning; D017550:Spectroscopy, Fourier Transform Infrared; D013890:Thiourea / Q000737:chemistry*; D014508:Urea / Q000737:chemistry*; D019287:Zinc Sulfate / Q000737:chemistry*
D019287:Zinc Sulfate; D014508:Urea; D013890:Thiourea
Infrared; Nonlinear optical; Powder pattern; Thiourea; Thiourea urea zinc sulfate; Urea