抽象的

New nano-sized supramolecular metal coordination polymers derived from 1,2-bis (2-pyridyl)-ethene and benzimidazole

Aref A.M.Aly, Maged S.Al-Fakeh, Mahmoud A.Ghandour, B.M.Abu-Zied

A number of new nano-sized supramolecular coordination polymers of Mn (II), Co (II), Ni (II), Cu (II) and Cd (II) derived from1,2-bis (2-pyridyl) ethene (BPE) and benzimidazole (BIMZ) has been prepared and characterized. The compounds have been characterized based on elemental analysis, FT-IR and electronic spectral studies and thermal analysis. Thermogravimetry (TG), derivative thermogravimetry (DTG) and differential thermal analysis (DTA) have been used to study the thermal decomposition steps and to calculate the thermodynamic parameters of the metal coordination polymers. The kinetic parameters have been calculated fromthe Coats-Redfern and Horowitz-Metzger equations. From SEM and TEM photographs as well as from the powder XRD data the particle size of the complexes was determined which indicates the nanosized nature of the prepared compounds (average size 24-28 nm).