Synthesis, characterisation and anti-corrosion screening of co(ii) n-methylcyclohexyl dithiocarbamate and co(ii) n-ethylcyclohexyl dithiocarbamate / Fasihah Esa

The new series of cobalt(II) dithiocarbamate complexes were successfully synthesised by using 'in situ' method with ethanol. The amines used in this study were N-methylcyclohexylamine and N-ethylcyclohexylamine. The dithiocarbamate complexes were characterised by using Ultraviolet Visible...

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Main Author:	Esa, Fasihah
Format:	Student Project
Language:	English
Published:	Faculty of Applied Sciences 2017
Subjects:	QD Chemistry Metals Dyes
Online Access:	http://ir.uitm.edu.my/id/eprint/26853/ http://ir.uitm.edu.my/id/eprint/26853/1/PPb_FASIHAH%20ESA%20AS%20N%2017_5.pdf

id	uitm-26853
recordtype	eprints
spelling	uitm-268532019-12-16T08:13:25Z http://ir.uitm.edu.my/id/eprint/26853/ Synthesis, characterisation and anti-corrosion screening of co(ii) n-methylcyclohexyl dithiocarbamate and co(ii) n-ethylcyclohexyl dithiocarbamate / Fasihah Esa Esa, Fasihah QD Chemistry Metals Dyes The new series of cobalt(II) dithiocarbamate complexes were successfully synthesised by using 'in situ' method with ethanol. The amines used in this study were N-methylcyclohexylamine and N-ethylcyclohexylamine. The dithiocarbamate complexes were characterised by using Ultraviolet Visible Spectroscopy (UV-Vis), Fourier Transform Infrared Spectroscopy (FTIR) and molar conductivity. The Co(II) dithiocarbamate complexes were acted as an inhibitor corrosion on mild steel. The data of UV-Vis and FTIR showed an agreement with proposed structures of Co(II) dithiocarbamate complexes. The UV-Visible analysis showed two types of transitions which are n -----+ n * and n-----+ n*. The electronic spectra of d-d transition appeared at >400 nm and indicate that the Co(II) was successfully coordinated to the dithiocarbamate ligands. Infrared spectra of the complexes showed that the thiouride band, ·v(C=N) appeared at 1470 -1480 cm- 1. The stretching band ofv(C=S) was unsplitting and the region was appeared at range 1010 - 1013 cm- 1 indicates that's the behaviour of dithiocarbamate complexes is a bidentate. The molar conductivity of Co(II) dithiocarbamate complexes showed that there was a non-electrolyte. The gravimetric analysis showed the percentages of Co(II) complexes were 15.90% in Co(II) N-methylcyclohexyl dithiocarbamate and 14.75% in Co(II) Nethylcyclohexyl dithiocarbamate that exactly same as a calculated amount. The inhibition effects of corrosion on the mild steel were investigated by weight loss method. The inhibitor efficiency was increased as the concentration of inhibitor increased and indicates that the dithiocarbamate complexes were adsorbed on the surface of the mild steel. The efficiency of corrosion inhibitor for Co(II) Nmethylcyclohexyl dithiocarbamate is better than Co(II) N-ethylcyclohexyl dithiocarbamate. Faculty of Applied Sciences 2017 Student Project NonPeerReviewed text en http://ir.uitm.edu.my/id/eprint/26853/1/PPb_FASIHAH%20ESA%20AS%20N%2017_5.pdf Esa, Fasihah (2017) Synthesis, characterisation and anti-corrosion screening of co(ii) n-methylcyclohexyl dithiocarbamate and co(ii) n-ethylcyclohexyl dithiocarbamate / Fasihah Esa. [Student Project] (Unpublished)
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Teknologi MARA
building	UiTM Institutional Repository
collection	Online Access
language	English
topic	QD Chemistry Metals Dyes
spellingShingle	QD Chemistry Metals Dyes Esa, Fasihah Synthesis, characterisation and anti-corrosion screening of co(ii) n-methylcyclohexyl dithiocarbamate and co(ii) n-ethylcyclohexyl dithiocarbamate / Fasihah Esa
description	The new series of cobalt(II) dithiocarbamate complexes were successfully synthesised by using 'in situ' method with ethanol. The amines used in this study were N-methylcyclohexylamine and N-ethylcyclohexylamine. The dithiocarbamate complexes were characterised by using Ultraviolet Visible Spectroscopy (UV-Vis), Fourier Transform Infrared Spectroscopy (FTIR) and molar conductivity. The Co(II) dithiocarbamate complexes were acted as an inhibitor corrosion on mild steel. The data of UV-Vis and FTIR showed an agreement with proposed structures of Co(II) dithiocarbamate complexes. The UV-Visible analysis showed two types of transitions which are n -----+ n * and n-----+ n*. The electronic spectra of d-d transition appeared at >400 nm and indicate that the Co(II) was successfully coordinated to the dithiocarbamate ligands. Infrared spectra of the complexes showed that the thiouride band, ·v(C=N) appeared at 1470 -1480 cm- 1. The stretching band ofv(C=S) was unsplitting and the region was appeared at range 1010 - 1013 cm- 1 indicates that's the behaviour of dithiocarbamate complexes is a bidentate. The molar conductivity of Co(II) dithiocarbamate complexes showed that there was a non-electrolyte. The gravimetric analysis showed the percentages of Co(II) complexes were 15.90% in Co(II) N-methylcyclohexyl dithiocarbamate and 14.75% in Co(II) Nethylcyclohexyl dithiocarbamate that exactly same as a calculated amount. The inhibition effects of corrosion on the mild steel were investigated by weight loss method. The inhibitor efficiency was increased as the concentration of inhibitor increased and indicates that the dithiocarbamate complexes were adsorbed on the surface of the mild steel. The efficiency of corrosion inhibitor for Co(II) Nmethylcyclohexyl dithiocarbamate is better than Co(II) N-ethylcyclohexyl dithiocarbamate.
format	Student Project
author	Esa, Fasihah
author_facet	Esa, Fasihah
author_sort	Esa, Fasihah
title	Synthesis, characterisation and anti-corrosion screening of co(ii) n-methylcyclohexyl dithiocarbamate and co(ii) n-ethylcyclohexyl dithiocarbamate / Fasihah Esa
title_short	Synthesis, characterisation and anti-corrosion screening of co(ii) n-methylcyclohexyl dithiocarbamate and co(ii) n-ethylcyclohexyl dithiocarbamate / Fasihah Esa
title_full	Synthesis, characterisation and anti-corrosion screening of co(ii) n-methylcyclohexyl dithiocarbamate and co(ii) n-ethylcyclohexyl dithiocarbamate / Fasihah Esa
title_fullStr	Synthesis, characterisation and anti-corrosion screening of co(ii) n-methylcyclohexyl dithiocarbamate and co(ii) n-ethylcyclohexyl dithiocarbamate / Fasihah Esa
title_full_unstemmed	Synthesis, characterisation and anti-corrosion screening of co(ii) n-methylcyclohexyl dithiocarbamate and co(ii) n-ethylcyclohexyl dithiocarbamate / Fasihah Esa
title_sort	synthesis, characterisation and anti-corrosion screening of co(ii) n-methylcyclohexyl dithiocarbamate and co(ii) n-ethylcyclohexyl dithiocarbamate / fasihah esa
publisher	Faculty of Applied Sciences
publishDate	2017
url	http://ir.uitm.edu.my/id/eprint/26853/ http://ir.uitm.edu.my/id/eprint/26853/1/PPb_FASIHAH%20ESA%20AS%20N%2017_5.pdf
first_indexed	2023-09-18T23:17:30Z
last_indexed	2023-09-18T23:17:30Z
_version_	1777419210565091328

Synthesis, characterisation and anti-corrosion screening of co(ii) n-methylcyclohexyl dithiocarbamate and co(ii) n-ethylcyclohexyl dithiocarbamate / Fasihah Esa

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