The data show an increasing trend in Δ H # values while −Δ S # values decrease with the bulkiness of the incoming nucleophiles reacting with the complex in good correlation to a decreasing reactivity trend of the S-donor nucleophiles which supports an associative mechanism to the substitution process.
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Seven membered chelate Pt(ii) complexes with 2,3-di(2-pyridyl)quinoxaline ligands: studies of substitution kinetics by sulfur donor nucleophiles, interactions with CT-DNA, BSA and <i>in vitro</i> cytotoxicity activities.
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