ISSN:
1572-9001
Keywords:
Thermochemistry
;
solution calorimetry
;
ruthenium-arene complexes
;
structural characterzation
;
relative bond enthalpies
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract The synthetic, thermodynamic and structural investigations of organoruthenium complexes of the form Cp*Ru(triene)OTf (Cp*=n5-(CH3)5C5; triene=anisole 1, indole 2, cycloheptatriene 3, OTf=OSO2CF3) are presented in this contribution. A direct entryway into the thermochemistry of these complexes is made possible by the rapid and quantitative arene/triene substitution for the three acetonitrile ligands in Cp*Ru(CH3CN)3OTf. The solution calorimetric study establishes the following order of stability: cycloheptatriene 〈 anisole 〈 indole. This study helps clarify the enthalpic and entropic components to the thermodynamic driving forces behind the formation of ruthenium arene/triene complexes. The solid-state structures of these three complexes(1–3) were determined by X-ray single-crystal studies. Thermodynamic factors affecting the Ru-triene bond energy are compared with structural results for these three ruthenium complexes.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00676832
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