Kehadiran beberapa interaksi supramolekul seperti ikatan hidrogen dan susunan pi-pi adalah pentin... more Kehadiran beberapa interaksi supramolekul seperti ikatan hidrogen dan susunan pi-pi adalah penting bukan sahaja untuk menstabilkan struktur molekul tetapi juga memainkan peranan sebagai molekul perumah. Oleh itu, dalam kajian ini, ligan berasaskan amida yang mempunyai bentuk U iaitu N,N’-2,6-bis(3-piridilmetil)piridina dikarboksiamida (L1) telah digunakan sebagai ligan yang berupaya membentuk ikatan hidrogen dengan anion, dan kajian ini berfokus kepada peranannya dalam keadaan polimer koordinatan. Sebagai permulaan, L1 ditindakbalas dengan beberapa logam peralihan melalui kaedah penyejatan perlahan untuk menghasilkan tiga polimer koordinatan yang baharu. Polimer koordinatan ini mempunyai formula molekul, {[Cd(L1)2(H2O)2](NO3)2.H2O}n (1), {[Cd(L1)2(H2O)2](ClO4)2}n (2) dan {[Co(L1)2(H2O)2](NO3)2}n (3) yang dicirikan melalui analisis unsur, FTIR spektroskopi dan kristalografi sinar-X. Polimer koordinatan 1, 2 and 3 menghablur dalam sistem triklinik dan kumpulan ruang P-1. Konformasi se...
The synthesis of amide-based molecules, possessing pre-organized structures, has received signifi... more The synthesis of amide-based molecules, possessing pre-organized structures, has received significant attention due to their potential applications as molecular receptors and as components of nanomaterials. In this study, four extended tetraamide ligands incorporating ethylene and propylene spacers, namely 1,2-bis[N,N′-6-(3-pyridylmethylamido)pyridyl-2-carboxyamido]ethane (L1), 1,2-bis[N,N′-6-(4-pyridylmethylamido)pyridyl-2-carboxyamido]ethane (L2), 1,2-bis[N,N′-6-(3-pyridylmethylamido)pyridyl-2-carboxyamido]propane (L3) and 1,2-bis[N,N′-6-(4-pyridylmethylamido)pyridyl-2-carboxyamido]propane (L4), were successfully synthesized. Further, reaction of L2 and L4, incorporating pendant 4-pyridyl donors as the metal coordinating sites, with cadmium salts, produced two close-packed one-dimensional coordination polymers, {[Cd3(L2)4(H2O)10](NO3)6·12H2O·CH3OH}n and {[Cd(SO4)(L4)(H2O)2]·4H2O·CH3OH}n. X-ray crystallography reveals that the flexible tetraamide ligands fold upon themselves in the...
The presence of drugs has alarmed about the impending hostile effects of drugs on community healt... more The presence of drugs has alarmed about the impending hostile effects of drugs on community health and the water ecosystem. The common sources for drug contamination in water are either from human consumption, their partial metabolization, and improper disposal of unused expired drugs. Besides, veterinaries, pharmaceutical plants, hospital wastes also contribute to water pollution. The other sources of drug pollution are dairies, animal husbandry, animal excreta, poultry, and community waste. The pharmaceutical waste can reach the freshwater, thus effecting the drinking water, which in turn can be lethal to the aquatic ecosystem. The drugs contaminating the water are necessary to be detected initially and controlled or eliminated accordingly. Ozonation and advanced oxidation processes have been effectively used to degrade different drugs. The metal nanoparticles as nanocatalyst can be effective in converting drug contaminants to less or non-harmful products via catalytic degradation...
A series of pivaloylthiourea derivatives, N-(2-nitrophenyl)-N′-(pivaloyl) thiourea (I), N-(3-nitr... more A series of pivaloylthiourea derivatives, N-(2-nitrophenyl)-N′-(pivaloyl) thiourea (I), N-(3-nitrophenyl)-N′-(pivaloyl) thiourea (II) and N-(4-nitrophenyl)-N′-(pivaloyl) thiourea (III) were synthesised and characterised by typical spectroscopic methods and single ...
Acta Crystallographica Section E Structure Reports Online, 2007
The molecule in the title compound, C15H12Cl2N2OS, adopts a trans–cis configuration with respect ... more The molecule in the title compound, C15H12Cl2N2OS, adopts a trans–cis configuration with respect to the positions of the phenylacetyl and 3,4-dichlorophenyl groups relative to the S atom across their C—N bonds. In the crystal structure, the molecules are linked by N—H...O and C—H...O interactions, forming a chain along the c axis.
Kehadiran beberapa interaksi supramolekul seperti ikatan hidrogen dan susunan pi-pi adalah pentin... more Kehadiran beberapa interaksi supramolekul seperti ikatan hidrogen dan susunan pi-pi adalah penting bukan sahaja untuk menstabilkan struktur molekul tetapi juga memainkan peranan sebagai molekul perumah. Oleh itu, dalam kajian ini, ligan berasaskan amida yang mempunyai bentuk U iaitu N,N’-2,6-bis(3-piridilmetil)piridina dikarboksiamida (L1) telah digunakan sebagai ligan yang berupaya membentuk ikatan hidrogen dengan anion, dan kajian ini berfokus kepada peranannya dalam keadaan polimer koordinatan. Sebagai permulaan, L1 ditindakbalas dengan beberapa logam peralihan melalui kaedah penyejatan perlahan untuk menghasilkan tiga polimer koordinatan yang baharu. Polimer koordinatan ini mempunyai formula molekul, {[Cd(L1)2(H2O)2](NO3)2.H2O}n (1), {[Cd(L1)2(H2O)2](ClO4)2}n (2) dan {[Co(L1)2(H2O)2](NO3)2}n (3) yang dicirikan melalui analisis unsur, FTIR spektroskopi dan kristalografi sinar-X. Polimer koordinatan 1, 2 and 3 menghablur dalam sistem triklinik dan kumpulan ruang P-1. Konformasi se...
The synthesis of amide-based molecules, possessing pre-organized structures, has received signifi... more The synthesis of amide-based molecules, possessing pre-organized structures, has received significant attention due to their potential applications as molecular receptors and as components of nanomaterials. In this study, four extended tetraamide ligands incorporating ethylene and propylene spacers, namely 1,2-bis[N,N′-6-(3-pyridylmethylamido)pyridyl-2-carboxyamido]ethane (L1), 1,2-bis[N,N′-6-(4-pyridylmethylamido)pyridyl-2-carboxyamido]ethane (L2), 1,2-bis[N,N′-6-(3-pyridylmethylamido)pyridyl-2-carboxyamido]propane (L3) and 1,2-bis[N,N′-6-(4-pyridylmethylamido)pyridyl-2-carboxyamido]propane (L4), were successfully synthesized. Further, reaction of L2 and L4, incorporating pendant 4-pyridyl donors as the metal coordinating sites, with cadmium salts, produced two close-packed one-dimensional coordination polymers, {[Cd3(L2)4(H2O)10](NO3)6·12H2O·CH3OH}n and {[Cd(SO4)(L4)(H2O)2]·4H2O·CH3OH}n. X-ray crystallography reveals that the flexible tetraamide ligands fold upon themselves in the...
The presence of drugs has alarmed about the impending hostile effects of drugs on community healt... more The presence of drugs has alarmed about the impending hostile effects of drugs on community health and the water ecosystem. The common sources for drug contamination in water are either from human consumption, their partial metabolization, and improper disposal of unused expired drugs. Besides, veterinaries, pharmaceutical plants, hospital wastes also contribute to water pollution. The other sources of drug pollution are dairies, animal husbandry, animal excreta, poultry, and community waste. The pharmaceutical waste can reach the freshwater, thus effecting the drinking water, which in turn can be lethal to the aquatic ecosystem. The drugs contaminating the water are necessary to be detected initially and controlled or eliminated accordingly. Ozonation and advanced oxidation processes have been effectively used to degrade different drugs. The metal nanoparticles as nanocatalyst can be effective in converting drug contaminants to less or non-harmful products via catalytic degradation...
A series of pivaloylthiourea derivatives, N-(2-nitrophenyl)-N′-(pivaloyl) thiourea (I), N-(3-nitr... more A series of pivaloylthiourea derivatives, N-(2-nitrophenyl)-N′-(pivaloyl) thiourea (I), N-(3-nitrophenyl)-N′-(pivaloyl) thiourea (II) and N-(4-nitrophenyl)-N′-(pivaloyl) thiourea (III) were synthesised and characterised by typical spectroscopic methods and single ...
Acta Crystallographica Section E Structure Reports Online, 2007
The molecule in the title compound, C15H12Cl2N2OS, adopts a trans–cis configuration with respect ... more The molecule in the title compound, C15H12Cl2N2OS, adopts a trans–cis configuration with respect to the positions of the phenylacetyl and 3,4-dichlorophenyl groups relative to the S atom across their C—N bonds. In the crystal structure, the molecules are linked by N—H...O and C—H...O interactions, forming a chain along the c axis.
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