SINTEZA, STRUCTURA ŞI PROPRIETĂŢILE MAGNETICE ALE COMPUŞILOR COORDINATIVI AI FIERULUI CU DERIVAŢII REACTIVULUI GIRARD T

Oleg PALAMARCIUC, Tatiana PALAMARCIUC, Ion CORJA Universitatea de Stat din Moldova

Abstract

SYNTHESIS, STRUCTURE AND MAGNETIC PROPERTIES OF IRON COORDINATION COMPOUNDS WITH GIRARD T REAGENT

The condensation of 5-bromosalicylaldehyde with Girard’s T reagent yields a new hydrazone [H2(5BrSalGT)]Cl. This tridentate ligand is soluble in water and react with iron ions with the formation of coordination compound [FeLCl2]. In water solutions [FeLCl2] interact with azide ion N3 - allowing the formation of [FeL(N3)2]2 (1) and [Fe(L)2]N3 .6H2O (2) compounds. The crystallographic studies of 1 and 2 show that in the coordination process the ligand is deprotonated and coordinate to the metal as monoanion. The cryomagnetic studies of 1 and 2 show a paramagnetic behaviour. Keywords: coordination compound, iron, magnetic properties, Girard T reagent.