Thermochemistry of metal alkoxides. Part 2.—Heats of formation of some titanium alkoxides
- 1 January 1966
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Transactions of the Faraday Society
- Vol. 62, 2374-2381
- https://doi.org/10.1039/tf9666202374
Abstract
Measurements of the heats of alcoholysis of titanium tetraethoxide in cyclohexane have been used to determine the standard heats of formation of various titanium tetra-alkoxides ΔH° f[Ti(OR)4, liq.], where R= n-C3H7, isoC3H7, n-C4H9, sec.-C4H9, n-C5H11 and tert.-C5H11. The values for Ti(OC4H9-n)4 and Ti(OC5H11-tert.)4 were checked by measurements of heats of reaction of the alcohols with titanium tetradiethylamide. The data were used to derive values for ΔH° f[Ti(OR)4, g], text-decoration:overline D(Ti—O) the average bond dissociation energy and text-decoration:overline E(Ti—O) the bond energy terms for Ti—O bonds. From the value of ΔH° f{Ti[N(C2H5)2]4, liq.}=–100 kcal/mole it was calculated that text-decoration:overline D(Ti—N)∼73 kcal/mole.Keywords
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