The thermodynamic properties of bis(η6- o-xylene)chromium(I) fulleride over the temperature range from T → 0 to 340 K
Abstract
The temperature dependence of the heat capacity of bis(η6- o-xylene)chromium(I) fulleride, [(η6-( o-xylene))2Cr]+•[C60]•-, over the temperature range 6-340 K was measured on an adiabatic vacuum calorimeter. The low-temperature (20 K ≤ T ≤ 50 K) heat capacity was subjected to multifractal processing; conclusions about the heterodynamic character of the structure were drawn. The experimental data were used to calculate the standard thermodynamic functions C {/p ∘}( T), H ∘( T)- H ∘(0), S ∘( T), and G ∘( T)- H ∘(0) over the temperature range from T → 0 to 340 K and estimate the standard entropy of fulleride formation from simple substances at 298.15 K. The standard thermodynamic characteristics of [(η6-( o-xylene))2Cr]+•[C60]•- were compared with those of the initial fullerene C60.
- Publication:
-
Russian Journal of Physical Chemistry A
- Pub Date:
- August 2009
- DOI:
- 10.1134/S0036024409080081
- Bibcode:
- 2009RJPCA..83.1289M