Preparation of some complexes resulting from the reaction of pyridine and salicylic acid with divalent ions
Abstract
Some metal ions (Cd+2, Co+2, Cu+2, Mn+2) complexes of salicylic acid and pyridine were synthesized and characterized by FT-IR. The absorption bands appeared between (1450 cm-1 - 1607 cm-1) assigned to (C=N) in the complexes shifted to higher frequency than free pyridine which observed at ( 1610 cm-1) which mean that the nitrogen atom of pyridine involved in the coordination. The absorption bands of (OCO) in the complexes noticed at (1451 cm-1-1600 cm-1) was shifted to higher frequency than free salicylic acid which indicates to coordination of the carboxylic group to the central ion. ( M-N) and (M-O) bands were further confirmed by the presence of stretching vibration around (410 cm-1 -420 cm-1) and (438 cm-1 - 478 cm-1) respectively. The present study was Show biological efficacy of germination of some Poaceae (Gramineae) Triticum durum (karim), soft wheat (208) and barley (Rihan) was obtained and identified through the Agricultural Research Center of Libya. Germination was satisfactory with effect complex Manganese on germination, shoot length and root length. However response of the cultivars under effect complex cobalt and Copper was very low, while, there was no significant effect on the germination process of the three cultivars under the influence of the cadmium complex.