Abstract
The enthalpies of formation of ZrPt3 and HfPt3 were determined by fluorine combustion calorimetry. The results (ΔHf o 298 (ZrPt3) = - 30.5 ± 2.0 kcal/g atom and ΔHf o 298 (HfPt3) = - 33.0 ±2.5 kcal/g atom) support the predictions of the Engel Brewer Correlation of metals. The unusually large heats of formation are considered to be caused by a transfer ofd electrons in a typical Lewis acid-base reaction.
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Srikrishnan, V., Ficalora, P.J. Measurement of the enthalpies of formation of ZrPt3 and HfPt3 by fluorine bomb calorimetry. Metall Trans 5, 1471–1475 (1974). https://doi.org/10.1007/BF02646634
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DOI: https://doi.org/10.1007/BF02646634