Thermal decomposition of cobalt(III), nickel(II), copper(II), palladium(II) and platinum(II) complexes of N-allyl-N'-(4'-methylthiazol)-2ylthiourea
Journal Title: JOURNAL OF ADVANCES IN CHEMISTRY - Year 2014, Vol 7, Issue 3
Abstract
Thermal decomposition of Co(III), Cu(II), Ni(II), Pd(II), and Pt(II) complexes of N-allyl-N'-(4'-methylthiazol)-2ylthiourea (AllMeTzTu), HL, have been studied by TG, DTG, and DTA curves. The complexes have the molecular formulae as CoL3.H2O, [Cu(HL)Cl2]0.5H2O and [CuL2(H2O)2] a square for ML2 (M = NiII, PdII and PtII), and [Pd(HL)Cl2]. The TG curves show that the four-coordinate complexes decompose in two stages to yield a free metal  ,with exception  [Pd(HL)Cl2] which gives PdS, as a residue, while the two six-coordinate complexes CoL3.H2O, and [CuL2(H2O)2] decompose in three stages to yield Co and Cu residues. The initial mass losses correspond to elimination of allylamine radical for all complexes in the same temperature range; and with MeTz when the temperature range extended beyond that range of the first stage  for Pd(II) and Pt(II) complexes. Kinetic parameters (E#, n, ΔH#, ΔS#, ΔG#) of the decomposition stages are determined and correlated with bonding and structural properties of the complexes.Â
Authors and Affiliations
Naeema H. M. Yarkandi
Keywords
Related Articles
- EP ID EP652648
- DOI 10.24297/jac.v7i3.2381
- Views 155
- Downloads 0
SYNTHESIS, CHARACTERIZATION AND ANTIMICROBIAL ACTIVITY OF NOVEL PYRAZOLO[3,4-b]PYRIDINES AND THEIR SPIRO-HETEROCYCLIC DERIVATIVES
The present work describes the synthesis of a novel series of heterocyclic moieties derived from 5-acetylpyrazolo[3,4-b]pyridine (1). The formation of chalcones (2a-d) was utilized to synthesize pyrazoline, isoxazoline a...
Adsorption of Hexavalent Chromium and phenol onto Bentonite Modified With HexaDecylTriMethylAmmonium Bromide (HDTMABr)
The efficiencies of Hexadecyltrimethylammonium bromide (HDTMABr) modified bentonite (HDTMABt) for phenol and chromium removal from aqueous solutions were studied in batch experiments at pH = 9 and pH = 2 values, respecti...
The Influence of Excipients on the Physicochemical and Biological Properties of a Bactericidal, Labile Ester Prodrug in a Salt Form – A Case Study of Cefetamet Pivoxil Hydrochloride
The article presents an innovative approach to a bactericidal drug design based on a cephem prodrug analogue – cefetamet pivoxil hydrochloride. The emergence of cefetamet pivoxil hydrochloride excipient systems (mannitol...
Heavy Metals Concentrations in the Shell and Tissue of Periwinkle (Tympanotonus fuscatus) and Giant Land Snail (Achatina fulica) in Soku Community of Niger Delta, Nigeria.
The pollution of aquatic ecosystem by heavy metals has assumed serious proportions due to their toxicity and accumulative behaviour. River dams are especially at risk of contamination by different contaminants from anthr...
EXPERIMENTAL INVESTIGATION AND NEURAL NETWORK PREDICTION OF THE PERFORMANCE OF A MIXED MODE SOLAR DRYER FOR COCONUT
The shelf life of agricultural food products may be enhanced by reducing their moisture contents, by means of a drying process. The present work aims at drying coconut yielding copra. This paper presents the design, anal...