Synthesis, characterisation and anti-corrosion screening of cu(ii) n-methylcyclohexyl- and cu(ii) n-ethylcyclohexyldithiocarbamates complexes / Siti Hajar Yaacob

The industrial sector has facing with the corrosion problem that causes the degradation of material. Even there are several technologies have been introduced for prevention the corrosion problem such as painting, plating and alloying, but the uses of inhibitor is more likeable for prevent this probl...

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Main Author:	Yaacob, Siti Hajar
Format:	Student Project
Language:	English
Published:	Faculty of Applied Sciences 2017
Subjects:	QD Chemistry
Online Access:	http://ir.uitm.edu.my/id/eprint/25248/ http://ir.uitm.edu.my/id/eprint/25248/1/PPb_SITI%20HAJAR%20YAACOB%20AS%20N%2017_5.pdf

id	uitm-25248
recordtype	eprints
spelling	uitm-252482019-09-11T02:25:03Z http://ir.uitm.edu.my/id/eprint/25248/ Synthesis, characterisation and anti-corrosion screening of cu(ii) n-methylcyclohexyl- and cu(ii) n-ethylcyclohexyldithiocarbamates complexes / Siti Hajar Yaacob Yaacob, Siti Hajar QD Chemistry The industrial sector has facing with the corrosion problem that causes the degradation of material. Even there are several technologies have been introduced for prevention the corrosion problem such as painting, plating and alloying, but the uses of inhibitor is more likeable for prevent this problem. Cu(II) N-methylcyclohexyl dithiocarbamate Cu(N-MchDTC)2 and Cu(II) N-ethylcyclohexyl dithiocarbamate Cu(N-EchDTC)2 complexes were successfully synthesised by in situ method. The compounds obtained were characterised by using infrared (FT-IR), Ultra Violet-Visible (UV-Vis), gravimetric analysis, molar conductivity and melting point. After that, the complexes were used for corrosion study by using weight loss method. From the FT-IR spectral data, it indicated that the both complexes were formed with a bidentate bonding of ligand to metal. From the UV-Vis analysis, there are three obvious absorption peaks that appeared which are n σ, π π and LMCT transitions. The presence of absorption peak at more than 400 nm was the evident of d-d transition of Cu(II). The molar conductivity showed the both Cu(II) complexes were exist as a non-electrolyte behavior. The gravimetric analysis showed that the percentages of Cu(II) in the Cu(N-MchDTC)2 complex was 12.48 % and Cu(N-EchDTC)2 complex was 9.23 %. For the corrosion inhibition study, the Cu(N-MchDTC)2 is a good corrosion inhibitor compare to Cu(N-EchDTC)2. When the inhibitor concentration increases, the inhibitor efficiency also increases. It is opposite with the rate of corrosion. When the inhibitor concentration used increases, it will cause the rate of corrosion decreases. Faculty of Applied Sciences 2017 Student Project NonPeerReviewed text en http://ir.uitm.edu.my/id/eprint/25248/1/PPb_SITI%20HAJAR%20YAACOB%20AS%20N%2017_5.pdf Yaacob, Siti Hajar (2017) Synthesis, characterisation and anti-corrosion screening of cu(ii) n-methylcyclohexyl- and cu(ii) n-ethylcyclohexyldithiocarbamates complexes / Siti Hajar Yaacob. [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
spellingShingle	QD Chemistry Yaacob, Siti Hajar Synthesis, characterisation and anti-corrosion screening of cu(ii) n-methylcyclohexyl- and cu(ii) n-ethylcyclohexyldithiocarbamates complexes / Siti Hajar Yaacob
description	The industrial sector has facing with the corrosion problem that causes the degradation of material. Even there are several technologies have been introduced for prevention the corrosion problem such as painting, plating and alloying, but the uses of inhibitor is more likeable for prevent this problem. Cu(II) N-methylcyclohexyl dithiocarbamate Cu(N-MchDTC)2 and Cu(II) N-ethylcyclohexyl dithiocarbamate Cu(N-EchDTC)2 complexes were successfully synthesised by in situ method. The compounds obtained were characterised by using infrared (FT-IR), Ultra Violet-Visible (UV-Vis), gravimetric analysis, molar conductivity and melting point. After that, the complexes were used for corrosion study by using weight loss method. From the FT-IR spectral data, it indicated that the both complexes were formed with a bidentate bonding of ligand to metal. From the UV-Vis analysis, there are three obvious absorption peaks that appeared which are n σ, π π and LMCT transitions. The presence of absorption peak at more than 400 nm was the evident of d-d transition of Cu(II). The molar conductivity showed the both Cu(II) complexes were exist as a non-electrolyte behavior. The gravimetric analysis showed that the percentages of Cu(II) in the Cu(N-MchDTC)2 complex was 12.48 % and Cu(N-EchDTC)2 complex was 9.23 %. For the corrosion inhibition study, the Cu(N-MchDTC)2 is a good corrosion inhibitor compare to Cu(N-EchDTC)2. When the inhibitor concentration increases, the inhibitor efficiency also increases. It is opposite with the rate of corrosion. When the inhibitor concentration used increases, it will cause the rate of corrosion decreases.
format	Student Project
author	Yaacob, Siti Hajar
author_facet	Yaacob, Siti Hajar
author_sort	Yaacob, Siti Hajar
title	Synthesis, characterisation and anti-corrosion screening of cu(ii) n-methylcyclohexyl- and cu(ii) n-ethylcyclohexyldithiocarbamates complexes / Siti Hajar Yaacob
title_short	Synthesis, characterisation and anti-corrosion screening of cu(ii) n-methylcyclohexyl- and cu(ii) n-ethylcyclohexyldithiocarbamates complexes / Siti Hajar Yaacob
title_full	Synthesis, characterisation and anti-corrosion screening of cu(ii) n-methylcyclohexyl- and cu(ii) n-ethylcyclohexyldithiocarbamates complexes / Siti Hajar Yaacob
title_fullStr	Synthesis, characterisation and anti-corrosion screening of cu(ii) n-methylcyclohexyl- and cu(ii) n-ethylcyclohexyldithiocarbamates complexes / Siti Hajar Yaacob
title_full_unstemmed	Synthesis, characterisation and anti-corrosion screening of cu(ii) n-methylcyclohexyl- and cu(ii) n-ethylcyclohexyldithiocarbamates complexes / Siti Hajar Yaacob
title_sort	synthesis, characterisation and anti-corrosion screening of cu(ii) n-methylcyclohexyl- and cu(ii) n-ethylcyclohexyldithiocarbamates complexes / siti hajar yaacob
publisher	Faculty of Applied Sciences
publishDate	2017
url	http://ir.uitm.edu.my/id/eprint/25248/ http://ir.uitm.edu.my/id/eprint/25248/1/PPb_SITI%20HAJAR%20YAACOB%20AS%20N%2017_5.pdf
first_indexed	2023-09-18T23:14:22Z
last_indexed	2023-09-18T23:14:22Z
_version_	1777419013385617408

Synthesis, characterisation and anti-corrosion screening of cu(ii) n-methylcyclohexyl- and cu(ii) n-ethylcyclohexyldithiocarbamates complexes / Siti Hajar Yaacob

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