Malaysian Journal of Analytical Sciences Vol 19 No 3 (2015): 541 – 549

 

 

 

DYSPROSIUM(III) ISATIN 2-METHYL-3-THIOSEMICARBAZONE: SYNTHESIS, STRUCTURAL AND CHARACTERIZATION

 

(Disprosium(III) Isatin 2-Metil-3-Tiosemikarbazon: Sintesis, Struktur dan Pencirian)

 

Nur Nadia Dzulkifli, Yang Farina*, Bohari M Yamin

 

School of Chemical Science and Food Technology,

Faculty of Science and Technology,

Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia

 

*Corresponding author: farina@ukm.edu.my

 

 

Received: 30 April 2015; Accepted: 20 May 2015

 

 

Abstract

Dy(Is2MeTSC)3 [Is2MeTSC= isatin 2-methyl-3-thiosemicarbazone] was synthesized by condensation method. The compounds were structurally characterized by elemental analysis, FT-IR, UV-Vis, TGA and X-ray crystallographic study.  The results of the elemental analyses for the compounds were in good agreement with the theoretical values.  The X-ray crystallographic structures for Is2MTSC showed that in the solid state, the compound existed in the thione form, where the C=S bond length was shorter than a single bond C-S, which was 1.82 Å.  Is2MTSC adopted an orthorhombic system, a = 14.3434(9), b = 8.4242(5), c = 17.8518(11) Å and Z = 8.  The FT-IR spectral data implied a tri-dentate bonding of Is2MeTSC to Dy(III) ion through carbonyl oxygen, azomethine nitrogen and thiocarbonyl sulfur.

 

Keywords: Dyprosium(III), thiosemicarbazone, isatin

 

Abstrak

Dy(Is2MeTSC)3 [Is2MeTSC= isatin 2-metil-3-tiosemikarbazon] telah disintesis dengan kaedah pemeluwapan. Struktur sebatian telah dilakukan penciriaan melalui analisis unsur, FT-IR, UV-Vis, TGA dan kajian kristalografi sinar-X . Keputusan analisis unsur bagi sebatian yang diperoleh adalah sepadan dengan  nilai teori. Struktur kristalografi sinar X  untuk sebatian Is2MTSC menunjukkan bahawa dalam  keadaan pepejal, sebatian wujud dalam bentuk tion, di mana panjang ikatan C=S adalah lebih pendek daripada ikatan tunggal C-S, iaitu 1.82 Å. Is2MTSC mempunyai sistem ortorombik, a = 14.3434(9), b = 8.4242(5), c = 17.8518(11) Å dan Z = 8. Data spektrum FT-IR mencadangkan ikatan tri-dentat Is2MeTSC kepada ion Dy (III) melalui karbonil oksigen, azometina nitrogen dan tiokarbonil sulfur.

 

Kata kunci: Disprosium(III), tiosemikarbazon, isatin

 

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