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Comptes Rendus Chimie
Volume 18, n° 5
pages 499-510 (mai 2015)
Doi : 10.1016/j.crci.2014.10.003
Received : 12 June 2014 ;  accepted : 10 October 2014
Bis(N -benzyl-N -furfuryldithiocarbamato-S ,S ′)mercury(II) as a precursor for the preparation of mercury sulfide nanoparticles

Govindaraju Gomathi a, Sajad Hussain Dar a, Subbiah Thirumaran a, , Samuele Ciattini b, Sivashanmugam Selvanayagam c
a Department of Chemistry, Annamalai University, Annamalainagar 608 002, India 
b Centro di Cristallografia Strutturale, Polo Scientifio di Sesto Fiorentino, Via della Lastruccia No. 3, 50019 Sesto Fiorentino, Firenze, Italy 
c Department of Physics, Kalasalingam University, Krishnankoil 626 126, India 

Corresponding author. Department of Chemistry, Annamalai University, Annamalainagar 608 002, Tamil Nadu, India.

Bis(N -benzyl-N -furfuryldithiocarbamato-S ,S ′)mercury(II), [Hg(bzfdtc)2 ] (1) and bis(N ,N -difurfuryldithiocarbamato-S ,S ′)mercury(II), [Hg(dfdtc)2 ] (2) were synthesized and characterized by IR, NMR and single-crystal X-ray crystallography. Single-crystal X-ray structures of 1 and 2 indicate that both complexes are dimeric, with each mercury in a distorted [HgS5 ] square pyramidal geometry. The thioureide (N13CS2 ) carbon signals were observed at 206.8 and 206.7ppm for 1 and 2, respectively, with very weak intensity, characteristic of the quaternary carbon signal. Complex 1 has been used as a precursor for the preparation of HgS nanoparticles. The as-prepared HgS nanoparticles have been characterized by powder XRD, FESEM, EDAX, UV–visible and IR spectroscopies. FESEM images of HgS nanoparticles show that the particles are spherical in shape. The blue shift in the absorption maxima in the UV–visible spectra of HgS1 and HgS2 is a consequence of the quantum confinement effect.

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Keywords : Dithiocarbamate, X-ray diffraction, Mercury sulfide nanoparticles, FESEM

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