Stoichiometric synthesis of fullerene compounds with lithium and sodium and analysis of their IR and EPR spectra

Catalytic effect of fullerene and formation of nanocomposites with complex hydrides: NaAlH4 and LiAlH4

“…The presence of these C-H stretches are evidence the hydrogen uptake observed is due to carbon-hydrogen bond formation of hydrofullerene rather than the rehydrogenation or reversal of the NaAlH 4 sorption mechanism [26]. In addition, these peaks shifts are similar to that observed for a Na 6 C 60 (THF) material which showed that the addition of the alkaline metal species changes the fullerenes normally high symmetry and causes a redistribution of electron density upon the fulleride formation [27].…”

Heat Capacity and Standard Thermodynamic Functions of a Fullerene Complex, ((CH3)3Si)12C60, over the Range fromT→ 0 K toT= 350 K

“…3 The high intensity of bands corresponding to Me 3 Si groups and the practically full disappearance of bands for C 60 are typical for an IR spectrum of (Me 3 Si) 12 C 60 . 3 The ((CH 3 ) 3 Si) 12 C 60 was treated by gaseous HCl in argon to prove that a fullerene fragment was saved. The resulting C 60 was identified by IR spectroscopy and high-performance liquid chromatography.…”

“…3 The thermodynamic properties of fullerene complexes containing trimethylsilyl groups, [((CH 3 ) 3 Si) n C 60 ] 2 , n ) 3 and 7, were studied by us earlier 4,5 in a wide temperature range. Thermodynamic properties of the monomeric complex ((CH 3 ) 3 Si) 12 C 60 have not yet been studied. These properties are, however, necessary to detect the influence of trimethylsilyl groups on the thermodynamic characteristics and the thermal stability of the above compound.…”

“…These data are necessary as the fundamental data for new functional derivatives of C 60 . Knowledge of these functions at various temperatures will allow an assessment of different chemical processes with ((CH 3 ) 3 Si) 12 C 60 under specified conditions.…”

“…The purpose of the present study is to measure the lowtemperature heat capacities by adiabatic calorimetry over the temperature range T ) (6.5 to 350) K of the crystalline fullerene complex ((CH 3 ) 3 Si) 12 C 60 , to calculate the standard thermodynamic functions: 3 Si) 12 C 60 (cr) over the range from T f 0 K to T ) 350 K, to determine the characteristic temperatures and fractal dimension D, to establish the structure topology, to calculate the standard entropy of formation at T ) 298.15 K of ((CH 3 ) 3 Si) 12 C 60 (cr), and to compare the thermodynamic characteristics of the fullerene complex under study, C 60 6 and (t-Bu) 12 C 60 . 7…”