Title of article :
New experimental and theoretical studies of two series of tripods based on pyrazole
Author/Authors :
bouabdallah, i. université mohammed i^er - faculté des sciences - laboratoire de chimie organique, macromoléculaire et produits naturels, urac25, Oujda, Morocco , bouabdallah, i. centre régional des métiers de l’éducation et de la formation - équipe de recherche en chimie et didactique, Oujda, Morocco , rahal, m. centre régional des métiers de l’éducation et de la formation, Morocco , rahal, m. université chouaib doukkali - faculté des sciences - laboratoire de chimie physique, El Jadida, Morocco , harit, t. université mohammed i^er - faculté des sciences - laboratoire de chimie organique, macromoléculaire et produits naturels, urac25, Oujda, Morocco , zidane, i. université ibn tofail - faculté des sciences, Kénitra, Morocco , touzani, r. université mohammed i^er - faculté pluridisciplinaire, Selouane, Morocco , el hajbi, a. université chouaib doukkali - faculté des sciences - laboratoire de chimie physique, El Jadida, Morocco , malek, f. université mohammed i^er - faculté des sciences - laboratoire de chimie organique, macromoléculaire et produits naturels, urac25, Oujda, Morocco
From page :
2919
To page :
2925
Abstract :
New comparative experimental and theoretical studies of two isomeric series of tripods based on pyrazole rings were investigated. Tripods were characterized by the presence of two types of connecting junctions N-C-N (1, 3) and N-C-C (2, 4). Melting points, IR, NMR and MS spectra of ligands 1-4 were examined. All geometrical parameters were computed using density functional theory method (B3LYP) with 6-311+G (2d,p) as basis set. The nature of junctions between the aniline N-atom and the pyrazole rings influence considerably the melting points, chemical shifts, fragmentation pattern, bond angles and orientations between pyrazolic rings. However, the junction modes produce small variations on the bond lengths in side arms.
Keywords :
Comparison , Isomer , Tripod , Pyrazole
Journal title :
Journal of Materials and Environmental Science
Journal title :
Journal of Materials and Environmental Science
Record number :
2583510
Link To Document :
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