Crystal Structure And Thermal Studies Of Copper(II) And Nickel(II) Complexes Of 2-hydroxyacetophenoimine As Vapour Precursors

¹Department of Chemistry, Loyola Institute of Frontier Energy (LIFE), Loyola College, Chennai 600034, India

²Powder Metallurgy Division, Materials Group, Bhabha Atomic Research Centre, Navi Mumbai 400703, India

³Sophisticated Instrumentation for Analytical Facility (SAIF), Indian Institute of Technology-Madras (IITM), Chennai 600036, India

Adv. Mater. Lett., 2013, Current Issue, 4 (8), pp 643-649

DOI: 10.5185/amlett.2012.11462

Publication Date (Web): Jul 13, 2013

Copyright © IAAM-VBRI Press

E-mail: jeseentha@gmail.com, dr.ksnagaraja@gmail.com

Abstract

Schiff’s base complexes bis(2-hydroxyacetophenoimine)nickel(II) [Ni(ohapim)₂] and bis(2-hydroxyacetophenoimine)copper(II) [Cu(ohapim)₂] were synthesized and studied for their idealist novel vapour source for chemical vapour deposition (CVD) application. Molecular structure was determined using single crystal X-ray diffraction, FT-IR, and elemental (C, H, N, and O) studies. Upon screening these complexes by dynamic thermogravimetric (TG) analyses, [Ni(ohapim)₂] was found to be completely volatile and suitable for Ni/NiO CVD application. The temperature-dependent vapour pressure of [Ni(ohapim)2] was measured by using a transpiration apparatus and gave a value of 77.4 ± 0.8 kJ/mol for the enthalpy of sublimation (ΔH°sub) in the temperature range 527.86–584.22 K.

Keywords

Schiff’s base complexes, single crystal, volatility, vapour pressure, CVD precursors