Skip to main content

On the existence of ‘thiourea urea magnesium chloride’ and ‘urea thiourea sodium chloride’

Journal of Thermal Analysis and Calorimetry volume 119, pages 985–988 (2015)Cite this article

Abstract

Gopinath et al. report to have grown single crystals of thiourea urea magnesium chloride (1) (J Therm Anal Calorim 2012, 109:841–5) and urea thiourea sodium chloride (2) (J Therm Anal Calorim 2012, 110:789–92) from an aqueous solution containing thiourea, urea and magnesium chloride (sodium chloride for 2) by the slow evaporation method. In this letter, it is proved that (1) and (2) are not new metal–thiourea compounds but pure thiourea. In view of no chemical reaction among the reagents employed for crystal growth, thiourea is formed due to fractional crystallization.

This is a preview of subscription content, access via your institution.

Access options

Buy single article

Instant access to the full article PDF.

USD 39.95

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Fig. 1

Notes

  1. Compounds are referred to by numbers to avoid use of non-standard abbreviations.

  2. See footnote 1.

References

  1. Gopinath S, Barathan S, Rajasekaran R. Growth and studies of thiourea urea magnesium chloride (TUMC) single crystals. J Therm Anal Calorim. 2012;109:841–5.

    Article  CAS  Google Scholar 

  2. Gopinath S, Barathan S, Rajasekaran R. Growth and characterization of semiorganic crystal. J Therm Anal Calorim. 2012;110:789–92.

    Article  CAS  Google Scholar 

  3. Fleck M, Petrosyan AM. Difficulties in the growth and characterization of non-linear optical materials: a case study of salts of amino acids. J Cryst Growth. 2010;312:2284–90.

    Article  CAS  Google Scholar 

  4. Srinivasan BR, Moovendaran K, Natarajan S. Comments on “Crystal growth, spectral, optical, and thermal characterization of glycyl-l-alanine hydrochloride (GLAH) single crystal”. J Therm Anal Calorim. doi:10.1007/s10973-014-4164-x.

  5. Baran J, Petrosyan AM. Comments on the Paper by R. Ezhil Vizhi et al. “Synthesis, crystal growth, structural, dielectric and ferroelectric properties of N-acetyl glycine phosphite (AGPI) single crystals”. Ferroelectrics. 2012;432:117–8.

    Article  CAS  Google Scholar 

  6. Srinivasan BR. On the existence of l-alanine cadmium bromide. Spectrochim Acta. 2013;116A:639–41.

    Article  Google Scholar 

  7. Petrosyan AM, Ghazaryan VV, Fleck M. On the existence of “bis-glycine maleate”. J Cryst Growth. 2012;359:129–31.

    Article  CAS  Google Scholar 

  8. Srinivasan BR. Does an ‘l-arginine doped orthophosphoric acid’ crystal exist? J Lumin. 2014;148:370–2.

    Article  CAS  Google Scholar 

  9. Srinivasan BR. On the existence of ‘glycine barium nitrate potassium nitrate’ crystal. Optik. 2014;125:3606–7.

    Article  CAS  Google Scholar 

  10. Petrosyan AM, Ghazaryan VV, Fleck M. On the existence of “l-threonine formate”, “l-alanine lithium chloride” and “bis l-alanine lithium chloride” crystals. Spectrochim Acta. 2013;105A:623–5.

    Article  Google Scholar 

  11. Bock CW, Kaufman A, Glusker JP. Coordination of water to magnesium cations. Inorg Chem. 1994;33:419–27.

    Article  CAS  Google Scholar 

  12. Boeyens JCA, Herbstein FH. Ionic complexes of thiourea. II. Chemical and crystallographic survey and determination of the crystal structures of some representative complexes. Inorg Chem. 1967;6:1408–25.

    Article  CAS  Google Scholar 

  13. Pedrares AS, Teng W, Ruhlandt-Senge K. Syntheses and structures of magnesium pyridine thiolates-model compounds for magnesium binding in photosystem I. Chem Eur J. 2003;9:2019–24.

    Article  CAS  Google Scholar 

  14. Srinivasan BR, Keerthika N. Reinvestigation of crystal growth of thiosemicarbazide potassium chloride and thiosemicarbazide lithium chloride. Optik. 2014;125:4807–9.

    Article  CAS  Google Scholar 

  15. Furniss BS, Hannaford AJ, Rogers V, Smith PWG, Tatchell AR. Vogel’s textbook of practical organic chemistry. 4th ed. London: ELBS/Longman; 1978. p. 933–7.

    Google Scholar 

  16. Svehla G. Vogel’s qualitative inorganic analysis. 7th ed. New Delhi: Pearson; 2011. p. 164–7.

    Google Scholar 

  17. Srinivasan BR, Jyai RN. Reinvestigation of growth of ‘l-valine zinc sulfate crystal’. Spectrochim Acta. 2014;120A:621–4.

    Article  Google Scholar 

  18. Srinivasan BR, Naik TA, Tylczyński Z, Priolkar KR. Reinvestigation of growth of thiourea urea zinc sulfate crystal. Spectrochim Acta. 2014;117A:805–9.

    Article  Google Scholar 

  19. Natarajan S, Srinivasan BR, Moovendaran K. Reinvestigation of crystal growth of ‘l-proline succinate’ & ‘l-threonine zinc acetate’ showing use of IR spectra for product identification. J Cryst Process Technol. 2014;4:121–5.

    Article  CAS  Google Scholar 

Download references

Acknowledgements

BRS thanks Rita N. Jyai for helpful discussions.

Author information

Authors and Affiliations

  1. Department of Chemistry, Goa University, Goa, 403206, India

    Bikshandarkoil R. Srinivasan

Authors
  1. Bikshandarkoil R. Srinivasan
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Bikshandarkoil R. Srinivasan.

Electronic supplementary material

Below is the link to the electronic supplementary material.

Supplementary material 1 (DOC 414 kb)

Rights and permissions

Reprints and Permissions

About this article

Verify currency and authenticity via CrossMark

Cite this article

Srinivasan, B.R. On the existence of ‘thiourea urea magnesium chloride’ and ‘urea thiourea sodium chloride’. J Therm Anal Calorim 119, 985–988 (2015). https://doi.org/10.1007/s10973-014-4259-4

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s10973-014-4259-4

Keywords

  • Crystal growth
  • Urea
  • Thiourea urea magnesium chloride
  • Urea thiourea sodium chloride
  • Thiourea
  • Fractional crystallization