Synthesis, characterization and structure determination of novel chromium hexacarbonyl derivatives via substitution with various group 15 complex ligands (L) where L = ethylenebis diphenyl-arsine, P-bromophenyl diphenylphosphane, bis (diphenylphosphino) hexane, bis (diphenylphosphino) pentane, and triphenylarsine

Synthesis, characterization and structure determination of novel chromium hexacarbonyl derivatives via substitution with various group 15 complex ligands (L) where L = ethylenebis diphenyl-arsine, P-bromophenyl diphenylphosphane, bis (diphenylphosphino) hexane, bis (diphenylphosphino) pentane, and triphenylarsine

The objective of the research study is to synthesize novel compounds through substitution process. The carbonyl ligand on chromium complexes is replaced by different ligands in order to produce a novel organometallic monocrystal compound. The crystal is characterized in terms of its structure, physi...

Full description

Bibliographic Details
Main Author: Muhammad Azhar , Mohd Yunus
Format: Undergraduates Project Papers
Language:English
Published: 2012
Subjects:
QD Chemistry
Online Access:http://umpir.ump.edu.my/id/eprint/7810/
http://umpir.ump.edu.my/id/eprint/7810/
http://umpir.ump.edu.my/id/eprint/7810/1/MUHAMMAD_AZHAR_BIN_MOHD_YUNUS.PDF
id ump-7810
recordtype eprints
spelling ump-78102015-03-03T09:38:14Z http://umpir.ump.edu.my/id/eprint/7810/ Synthesis, characterization and structure determination of novel chromium hexacarbonyl derivatives via substitution with various group 15 complex ligands (L) where L = ethylenebis diphenyl-arsine, P-bromophenyl diphenylphosphane, bis (diphenylphosphino) hexane, bis (diphenylphosphino) pentane, and triphenylarsine Muhammad Azhar , Mohd Yunus QD Chemistry The objective of the research study is to synthesize novel compounds through substitution process. The carbonyl ligand on chromium complexes is replaced by different ligands in order to produce a novel organometallic monocrystal compound. The crystal is characterized in terms of its structure, physical and chemical properties. Derivatives of chromium carbonyl are prepared by reaction with a number of group 15 complex ligands which have the potential to result in novel organometallic compounds. Five different ligands were used to produce novel organometallic monocrystal compounds namely Ethylenebis diphenyl-arsine,P-bromophenyldiphenylphosphane,Bis(diphenylphosphino)hexane,Bis(diphenylphosphino)pentane, and Triphenylarsine. From these, the substitution reaction using Ethylenebis diphenyl-arsine and Pbromophenyldiphenyiphosphane both resulted in the formation of sticky light pale yellow crystals, and a fine bright yellow crystal respectively. From the monocrystal Xray diffraction analysis, the resulting novel crystal structure is determined as [cis-1,2- bis(diphenylarsinyl)ethane] tetracarbonylchromium with molecular formula Cr(CO)4(C26H24As2) denoted as Al and trans-bis [(4-bromophenyldiphenyl) phosphane] tetracarbonylchromium with molecular formula Cr(CO)4 (P2C36H28Br2 ) denoted as A2. Infrared spectroscopy (IR) and nuclear magnetic resonance (NMR) further compliment the X-ray diffraction results. For the Al novel structure, the Cr atom is octahedrally coordinated by four carbonyl ligands and single bidentate arsenic ligand, which are bonded in a trans position to each other. The compound crystallizes in the orthorhombic system with an average Cr-As bond length of 2.44865A and average Cr-CO bond length of 1.86975A. For the A2 novel structure, the Cr atom is octahedrally coordinated by four carbonyl ligands and two monodentate tertiary phosphine ligand, which are bonded in a cis position to each other. The compound crystallizes in the triclinic system with an average Cr-P bond length of 2.3509A and average Cr-CO bond length of 1.8895A. Melting point test is also used to determine the melting point of both crystals with Al at 185°C and A2 at 182°C. 2012 Undergraduates Project Papers NonPeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/7810/1/MUHAMMAD_AZHAR_BIN_MOHD_YUNUS.PDF Muhammad Azhar , Mohd Yunus (2012) Synthesis, characterization and structure determination of novel chromium hexacarbonyl derivatives via substitution with various group 15 complex ligands (L) where L = ethylenebis diphenyl-arsine, P-bromophenyl diphenylphosphane, bis (diphenylphosphino) hexane, bis (diphenylphosphino) pentane, and triphenylarsine. Faculty of Industrial Sciences & Technology, Universiti Malaysia Pahang. http://iportal.ump.edu.my/lib/item?id=chamo:76330&theme=UMP2
repository_type Digital Repository
institution_category Local University
institution Universiti Malaysia Pahang
building UMP Institutional Repository
collection Online Access
language English
topic QD Chemistry
spellingShingle QD Chemistry
Muhammad Azhar , Mohd Yunus
Synthesis, characterization and structure determination of novel chromium hexacarbonyl derivatives via substitution with various group 15 complex ligands (L) where L = ethylenebis diphenyl-arsine, P-bromophenyl diphenylphosphane, bis (diphenylphosphino) hexane, bis (diphenylphosphino) pentane, and triphenylarsine
description The objective of the research study is to synthesize novel compounds through substitution process. The carbonyl ligand on chromium complexes is replaced by different ligands in order to produce a novel organometallic monocrystal compound. The crystal is characterized in terms of its structure, physical and chemical properties. Derivatives of chromium carbonyl are prepared by reaction with a number of group 15 complex ligands which have the potential to result in novel organometallic compounds. Five different ligands were used to produce novel organometallic monocrystal compounds namely Ethylenebis diphenyl-arsine,P-bromophenyldiphenylphosphane,Bis(diphenylphosphino)hexane,Bis(diphenylphosphino)pentane, and Triphenylarsine. From these, the substitution reaction using Ethylenebis diphenyl-arsine and Pbromophenyldiphenyiphosphane both resulted in the formation of sticky light pale yellow crystals, and a fine bright yellow crystal respectively. From the monocrystal Xray diffraction analysis, the resulting novel crystal structure is determined as [cis-1,2- bis(diphenylarsinyl)ethane] tetracarbonylchromium with molecular formula Cr(CO)4(C26H24As2) denoted as Al and trans-bis [(4-bromophenyldiphenyl) phosphane] tetracarbonylchromium with molecular formula Cr(CO)4 (P2C36H28Br2 ) denoted as A2. Infrared spectroscopy (IR) and nuclear magnetic resonance (NMR) further compliment the X-ray diffraction results. For the Al novel structure, the Cr atom is octahedrally coordinated by four carbonyl ligands and single bidentate arsenic ligand, which are bonded in a trans position to each other. The compound crystallizes in the orthorhombic system with an average Cr-As bond length of 2.44865A and average Cr-CO bond length of 1.86975A. For the A2 novel structure, the Cr atom is octahedrally coordinated by four carbonyl ligands and two monodentate tertiary phosphine ligand, which are bonded in a cis position to each other. The compound crystallizes in the triclinic system with an average Cr-P bond length of 2.3509A and average Cr-CO bond length of 1.8895A. Melting point test is also used to determine the melting point of both crystals with Al at 185°C and A2 at 182°C.
format Undergraduates Project Papers
author Muhammad Azhar , Mohd Yunus
author_facet Muhammad Azhar , Mohd Yunus
author_sort Muhammad Azhar , Mohd Yunus
title Synthesis, characterization and structure determination of novel chromium hexacarbonyl derivatives via substitution with various group 15 complex ligands (L) where L = ethylenebis diphenyl-arsine, P-bromophenyl diphenylphosphane, bis (diphenylphosphino) hexane, bis (diphenylphosphino) pentane, and triphenylarsine
title_short Synthesis, characterization and structure determination of novel chromium hexacarbonyl derivatives via substitution with various group 15 complex ligands (L) where L = ethylenebis diphenyl-arsine, P-bromophenyl diphenylphosphane, bis (diphenylphosphino) hexane, bis (diphenylphosphino) pentane, and triphenylarsine
title_full Synthesis, characterization and structure determination of novel chromium hexacarbonyl derivatives via substitution with various group 15 complex ligands (L) where L = ethylenebis diphenyl-arsine, P-bromophenyl diphenylphosphane, bis (diphenylphosphino) hexane, bis (diphenylphosphino) pentane, and triphenylarsine
title_fullStr Synthesis, characterization and structure determination of novel chromium hexacarbonyl derivatives via substitution with various group 15 complex ligands (L) where L = ethylenebis diphenyl-arsine, P-bromophenyl diphenylphosphane, bis (diphenylphosphino) hexane, bis (diphenylphosphino) pentane, and triphenylarsine
title_full_unstemmed Synthesis, characterization and structure determination of novel chromium hexacarbonyl derivatives via substitution with various group 15 complex ligands (L) where L = ethylenebis diphenyl-arsine, P-bromophenyl diphenylphosphane, bis (diphenylphosphino) hexane, bis (diphenylphosphino) pentane, and triphenylarsine
title_sort synthesis, characterization and structure determination of novel chromium hexacarbonyl derivatives via substitution with various group 15 complex ligands (l) where l = ethylenebis diphenyl-arsine, p-bromophenyl diphenylphosphane, bis (diphenylphosphino) hexane, bis (diphenylphosphino) pentane, and triphenylarsine
publishDate 2012
url http://umpir.ump.edu.my/id/eprint/7810/
http://umpir.ump.edu.my/id/eprint/7810/
http://umpir.ump.edu.my/id/eprint/7810/1/MUHAMMAD_AZHAR_BIN_MOHD_YUNUS.PDF
first_indexed 2023-09-18T22:04:49Z
last_indexed 2023-09-18T22:04:49Z
_version_ 1777414637802749952

Similar Items