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Articles by Aamer SAEED
Total Records ( 3 ) for Aamer SAEED
  Aamer SAEED , Shahid HUSSAIN and Ulrich FLORKE
  2-Nitro-N-(4-nitrophenyl)benzamide was synthesized and characterized by spectroscopy and elemental analysis. The crystal structure was determined from single-crystal X-ray diffraction data. It crystallizes in the orthorhombic space group, P 212121, with unit cell dimensions a = 8.9443(10) Å, b = 9.7147(11) Å, and c = 13.8016(16) Å. The dihedral angle between the 2 aromatic rings is 82.32(4)°. The N2 and N3 nitro groups are oriented with respect to their attached phenyl rings at dihedral angles of 1.97(3)° and 15.73(3)°, respectively. The intramolecular C-H…O hydrogen bond results in the formation of a non-planar 6-membered ring. In the crystal structure, intermolecular N-H...O hydrogen bonds seem to be effective in the stabilization of the structure, resulting in the formation of a 3-dimensional network.
  Aamer SAEED , Sabah ZAMAN , Maryam JAMIL and Maryam JAMIL
  Variously substituted N-(4-phenyl-3-aroylthiazol-2(3H)-ylidene)benzamides (2a-t) were prepared by base-catalyzed cyclization of corresponding 1-aroyl-3-aryl thioureas with acetophenone in the presence of bromine. Some of the synthesized compounds were assayed in vitro for their antifungal activity and were found to exhibit low to moderate activity.
  Muhammad ARSHAD , Saeed- ur-REHMAN , Ammad Hussain QURESHI , Khalid MASUD , Muhammad ARIF , Aamer SAEED and Riaz AHMED
  The nitrate complexes of transition metals with 1,2-diimidazoloethane (DIE) of the general formula M(DIE)(NO3)2, where M = Co(II), Cu(II), Zn(II), and Cd(II), were synthesized. The compositions of metal complexes and ligand were investigated by elemental analysis in order to ensure their purity and the structure elucidations were based on conductivity measurements, room temperature magnetic moment studies, proton NMR, and electronic and IR spectra. The thermal behavior of these complexes possessing distorted tetrahedral geometry and their ligand was studied by means of thermoanalytical techniques in static air atmosphere in order to determine their mode of decomposition and thermal stability. All these complexes and ligand show 2-step weight loss upon heating to 740 °C, with simultaneous loss of inorganic and organic fragments exhibiting almost the same mode of decomposition pattern. The residue after heating above 640 °C corresponded to metal oxide. There was no residue in the case of ligand. The composition of intermediates and end products formed during degradation was confirmed by microanalysis and IR spectroscopy. It follows from the results that the thermal stability of the complexes increases in the following sequence:
Co(II) < Cu(II) < Zn(II) < Cd(II)
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