• S.D.Deshmukh
• P.R.Mandlik

Co(II), Cu(II), Fe(III) and Zr(IV) complexes of 2,4-dihydroxyacetophenone salicyloyl hydrazone (DHASH) have been synthesized and characterized by elemental analysis, molar conductance, magnetic moments, electronic, 1H NMR, Mass, IR spectra, ESR, and thermal studies. The molar conductivity data of the complexes show them to be non-electrolyte. The IR data suggest that the ligand acts as dibasic tridentate (ONO) (enol form) donor towards Co(II), Cu(II), Zr(IV) and tribasic tetradentate (ONOO) (enol form) donor towards Fe(III) complexes while the electronic spectral data together with magnetic moment suggest square planer geometry for Co(II), Cu(II) and octahedral geometry for Fe(III), Zr(IV) complexes. The TG analysis suggests high stability for most of the complexes followed by thermal decomposition in different steps. The kinetic parameters for their decomposition have been evaluated by using the Freeman Carroll and Sharp-Wentworth methods. ESR spectra of copper complexes were recorded and discussed.

Salicyloyl hydrazone, complexes, thermal analysis.

"SYNTHESIS, SPECTRAL AND THERMAL STUDIES OF METAL COMPLEXES OF 2,4-DIHYDROXYACETOPHENONE SALICYLOYL HYDRAZONE (DHASH)", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.7, Issue 2, page no.629-634, February-2020, Available :http://www.jetir.org/papers/JETIRDI06123.pdf

"SYNTHESIS, SPECTRAL AND THERMAL STUDIES OF METAL COMPLEXES OF 2,4-DIHYDROXYACETOPHENONE SALICYLOYL HYDRAZONE (DHASH)", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.7, Issue 2, page no. pp629-634, February-2020, Available at : http://www.jetir.org/papers/JETIRDI06123.pdf