http://localhost:80/xmlui/handle/123456789/17413 2026-04-23T00:17:23Z http://localhost:80/xmlui/handle/123456789/19098 Title: Sesquiterpenoids of Ferula Species Authors: HASSAN M.G.AL-HAZIMI 1988-12-18T00:00:00Z http://localhost:80/xmlui/handle/123456789/19097 Title: A High Yield Method of Preparation of Pyridine-2-aldehyde Authors: RASHID IQBAL; AWAD EL-HOSSADI; SABIHA SARWAR BAQAI 1988-12-16T00:00:00Z http://localhost:80/xmlui/handle/123456789/19096 Title: On the Formation of Mn(II) Anthranilic Acid Anilide Complexes. Structural Elucidation by TGA, IR, Electronic, EPR Spectra and Potentiometric Studies Authors: SAMY; M.ABU-EL-WAFA; MOSTAFA A.EL-BEHAIRY; RAAFAT M. ISSA; AKILA A. SALEH Abstract: A new series of Mn(1I)-anilide complexes have been prepared and chara¬cterized by elemental analysis, TGA and IR spectra. Electronic and EPR spectra indicate octahedral geometry around the MN(II) ion, where the solvent mole¬cules (H20 or EtOH) occupy axial positions leading to the trans structure.The stability constants of the complexes in 50% dioxane are determined by potentionetric techniques. The values of the conditional stability constants depend on molecular structure. Deviation of the a-log K plots slopes from unity is attributed mainly to steric effect, Tt-electron back donation from the metal on or structural changes in the ligand. 1988-12-15T00:00:00Z http://localhost:80/xmlui/handle/123456789/19095 Title: Some New Tin(II) Complexes of Schiff Bases Derived from Sulphadrugs Authors: A.K. VARSHNEY; J.P. TANDON Abstract: Reactions of tin(II) methoxide with the Schiff bases derived by the condensation of salicyladehyde and sulfadrugs have resulted in the isolation of some new tin(II) derivatives. These have been characterized on the bases of elemental analyses, molecular weight determination, conductivity measure- ment and UV, IR and IH NMR spectral studies. The bivalent nature and the geometry around tin(II) has been deduced on the basis of Mossbauer spectral data. 1988-12-14T00:00:00Z