Polarographic study of mixed ligand Trimethylolpropane trithioglycolate-alaninate or aspartate or glutaminate or valinate complexes with cadmium (II) lead (II) and thallium (I), in aqueous non aqueous ethanol

eng Ansari Education and Research Society Journal of Ultra Chemistry 0973-3450 2319-8036 December 2009 5 3 349 356 juc 869 article Polarographic study of mixed ligand Trimethylolpropane trithioglycolate-alaninate or aspartate or glutaminate or valinate complexes with cadmium (II) lead (II) and thallium (I), in aqueous non aqueous ethanol SEEMA AGARWAL (dr_seema_agarwal@yahoo.co.in) 1 KALPANA S. 2 Electrochemistry Research Laboratory P.G. Department of Chemistry Govt. College, Kota-324002, Raj. (INDIA) Mixed ligand systems (trimethylolpropanetrithioglycolate -alaninate, trimethylolpro-panetrithioglycolate - aspartate, trimethylolpro-panetrithioglycolate glutaminate, trimethylolpropa- netrithioglycolate valinate, with Cd(II), Pb(ll) and Tl (I) in aqueous-non aqueous (3:1 v/v aqueous ethanol) media at constant ionic strength (KNOj, p = 1.0 M), pH (6.2 ± 0.02) and temperature (303 ± 2K) have been studied polarographica'lly. Triton X-100 (0.001 %) was used as wave maxima suppressor. It was shown that only one mixed ligand entity (MaixO is formed in case of trimethylolpropanetrithioglycolate alaninate/ aspartate/ glutaminate/ valinate systems (where 'i' is three forCd(ll) and Pb(II), and one for TI(I), j is one for all complexes formed) A and X are trimethylolpropane-trithioglycoiate and alaninate/ aspartate/ glutaminate/ valinate/ respectively. Compositions and stability constants of the single mixed ligand species formed have been evaluated employing Souchay and Faucherr's method.   https://journalofchemistry.org/paper/869/ mixed ligand trithioglycolate