Investigation into aroylhydrazones as chelating agents. Synthesis and structural characterization of a tin(IV) complex with 2,6-diacetylpyridine bis(salicyloylhydrazone)
Abstract
2,6-Diacetylpyridine bis(salicyloylhydrazone)(H2daps) has been synthesized and its co-ordinating properties have been investigated in the complex [SnPrn2(daps)] by means of spectroscopic (i.r. and u.v.) and X-ray diffractometric techniques. Crystals of the compound are orthorhombic, with a= 18.332(10), b= 17.187(11), c= 9.161(5)Å; Z= 4, space group P212121. A total of 1 936 observed reflections have been measured by single-crystal diffractometry and refined by full-matrix least squares to R 0.0402. The quinquedentate behaviour and the near planarity of the organic ligand favours a pentagonal-bipyramidal arrangement around tin with the two propyl groups occupying the axial sites.