Synthesis, characterization and catalytic activity of pall adium(ii)-l,3-bis[(4-chl orophenyl)methyl]-1- benzimidazolium bromide complex in heck reaction / Nina Natasha Md Sani
Homogeneous catalysis has through a new development in the organometallic complexes application as a catalyst. This organometallic catalyst can increase the economic viability of the country by doing some innovation on homogeneous process in chemical reaction. This research report on the synthesis,...
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Faculty of Applied Sciences
2017
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| Online Access: | http://ir.uitm.edu.my/id/eprint/25599/ http://ir.uitm.edu.my/id/eprint/25599/1/PPb_NINA%20NATASHA%20MD%20SANI%20AS%20N%2017_5.pdf |
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uitm-255992019-09-25T07:46:02Z http://ir.uitm.edu.my/id/eprint/25599/ Synthesis, characterization and catalytic activity of pall adium(ii)-l,3-bis[(4-chl orophenyl)methyl]-1- benzimidazolium bromide complex in heck reaction / Nina Natasha Md Sani Md Sani, Nina Natasha QD Chemistry Catalysis Homogeneous catalysis has through a new development in the organometallic complexes application as a catalyst. This organometallic catalyst can increase the economic viability of the country by doing some innovation on homogeneous process in chemical reaction. This research report on the synthesis, characterization and catalytic activity of 1,3-Bis[(4-chlorophenyl)methyl]-1-Benzimidazolium Bromide (NHC ligand) and Pd(Il)- l ,3bis-[ ( chlorophenyl)methyl ]-1-benzimidazolium Bromide complex (Pd(II)-NHC). The synthesize NHC ligand containing NHC's functionality was prepared by the reaction of benzimidazole and 4- chlorobenzylbromide. The targeted complexation were produce by reacting together NHC ligand with PdCh. All products were characterized by Fourier Transform Infrared (FTIR), CHN elemental analysis, Nuclear Magnetic Resonance (NMR), Ultraviolet-Visible spectrophotometer (UV-Vis). In CHN,the experimental result for both NHC ligand and Pd(Il)-NHC complex almost similar with its calculation result and this result was accepted. The changes stretching frequency in FTIR from lower to higher shows that the complexation with Pd metal are occurs. The number of expected hydrogen and carbon can be observed by using NMR. The important peak of H-1 in I H NMR was disappeared after complexation. The changes of chemical shift at C-1 shows that the carbon carbene was successfully attached with metal. The UV graph shows disappearance and shifted to 282 nm of PdCh maximum absortion peak after complexation to form Pd(II)-NHC complex. The result that come out from the CHN, FTIR, NMR and UV-Vis spectroscopy was confirmed that targeted compound which is Pd(Il)-NHC complex are successfully synthesized. The catalytic performance of the Pd(Il)-1,3-bis[ ( 4- chlorophenyl)methyl]-1-benzimidazolium Bromide complex were studied in Heck C-C coupling reaction by using 1-bromo-4-nitrobenzene and styrene as a starting material. The product has been characterized by FTIR and the catalytic activity was determined by using GC-FID. Effect of catalyst loading and effect of time were used as a parameter to observed changes in conversion rate and selectivity. The experimental result was showed at 0.5 mmol % of catalyst loading with 124 turnover number (TON) and at 130 °C in 60 minutes was achieved an excellent catalytic activity. Faculty of Applied Sciences 2017 Student Project NonPeerReviewed text en http://ir.uitm.edu.my/id/eprint/25599/1/PPb_NINA%20NATASHA%20MD%20SANI%20AS%20N%2017_5.pdf Md Sani, Nina Natasha (2017) Synthesis, characterization and catalytic activity of pall adium(ii)-l,3-bis[(4-chl orophenyl)methyl]-1- benzimidazolium bromide complex in heck reaction / Nina Natasha Md Sani. [Student Project] (Submitted) |
| repository_type |
Digital Repository |
| institution_category |
Local University |
| institution |
Universiti Teknologi MARA |
| building |
UiTM Institutional Repository |
| collection |
Online Access |
| language |
English |
| topic |
QD Chemistry Catalysis |
| spellingShingle |
QD Chemistry Catalysis Md Sani, Nina Natasha Synthesis, characterization and catalytic activity of pall adium(ii)-l,3-bis[(4-chl orophenyl)methyl]-1- benzimidazolium bromide complex in heck reaction / Nina Natasha Md Sani |
| description |
Homogeneous catalysis has through a new development in the organometallic complexes application as a catalyst. This organometallic catalyst can increase the economic viability of the country by doing some innovation on homogeneous
process in chemical reaction. This research report on the synthesis, characterization and catalytic activity of 1,3-Bis[(4-chlorophenyl)methyl]-1-Benzimidazolium Bromide (NHC ligand) and Pd(Il)- l ,3bis-[ ( chlorophenyl)methyl ]-1-benzimidazolium Bromide complex (Pd(II)-NHC). The synthesize NHC ligand containing NHC's functionality was prepared by the reaction of benzimidazole and 4-
chlorobenzylbromide. The targeted complexation were produce by reacting together NHC ligand with PdCh. All products were characterized by Fourier Transform Infrared (FTIR), CHN elemental analysis, Nuclear Magnetic Resonance (NMR), Ultraviolet-Visible spectrophotometer (UV-Vis). In CHN,the experimental result for both NHC ligand and Pd(Il)-NHC complex almost similar with its
calculation result and this result was accepted. The changes stretching frequency in FTIR from lower to higher shows that the complexation with Pd metal are occurs.
The number of expected hydrogen and carbon can be observed by using NMR. The important peak of H-1 in I H NMR was disappeared after complexation. The
changes of chemical shift at C-1 shows that the carbon carbene was successfully attached with metal. The UV graph shows disappearance and shifted to 282 nm of
PdCh maximum absortion peak after complexation to form Pd(II)-NHC complex. The result that come out from the CHN, FTIR, NMR and UV-Vis spectroscopy was confirmed that targeted compound which is Pd(Il)-NHC complex are
successfully synthesized. The catalytic performance of the Pd(Il)-1,3-bis[ ( 4- chlorophenyl)methyl]-1-benzimidazolium Bromide complex were studied in Heck C-C coupling reaction by using 1-bromo-4-nitrobenzene and styrene as a starting material. The product has been characterized by FTIR and the catalytic activity was determined by using GC-FID. Effect of catalyst loading and effect of time
were used as a parameter to observed changes in conversion rate and selectivity. The experimental result was showed at 0.5 mmol % of catalyst loading with 124
turnover number (TON) and at 130 °C in 60 minutes was achieved an excellent catalytic activity. |
| format |
Student Project |
| author |
Md Sani, Nina Natasha |
| author_facet |
Md Sani, Nina Natasha |
| author_sort |
Md Sani, Nina Natasha |
| title |
Synthesis, characterization and catalytic activity of pall adium(ii)-l,3-bis[(4-chl orophenyl)methyl]-1- benzimidazolium bromide complex in heck reaction / Nina Natasha Md Sani |
| title_short |
Synthesis, characterization and catalytic activity of pall adium(ii)-l,3-bis[(4-chl orophenyl)methyl]-1- benzimidazolium bromide complex in heck reaction / Nina Natasha Md Sani |
| title_full |
Synthesis, characterization and catalytic activity of pall adium(ii)-l,3-bis[(4-chl orophenyl)methyl]-1- benzimidazolium bromide complex in heck reaction / Nina Natasha Md Sani |
| title_fullStr |
Synthesis, characterization and catalytic activity of pall adium(ii)-l,3-bis[(4-chl orophenyl)methyl]-1- benzimidazolium bromide complex in heck reaction / Nina Natasha Md Sani |
| title_full_unstemmed |
Synthesis, characterization and catalytic activity of pall adium(ii)-l,3-bis[(4-chl orophenyl)methyl]-1- benzimidazolium bromide complex in heck reaction / Nina Natasha Md Sani |
| title_sort |
synthesis, characterization and catalytic activity of pall adium(ii)-l,3-bis[(4-chl orophenyl)methyl]-1- benzimidazolium bromide complex in heck reaction / nina natasha md sani |
| publisher |
Faculty of Applied Sciences |
| publishDate |
2017 |
| url |
http://ir.uitm.edu.my/id/eprint/25599/ http://ir.uitm.edu.my/id/eprint/25599/1/PPb_NINA%20NATASHA%20MD%20SANI%20AS%20N%2017_5.pdf |
| first_indexed |
2023-09-18T23:15:04Z |
| last_indexed |
2023-09-18T23:15:04Z |
| _version_ |
1777419057042030592 |