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Аннотация:Abstract. The fullerides AnМmC60 (A=K, Rb, Cs; M= Be, Mg; B, Al, Ga. In; n=1, 2; m=1, 2)
have been synthesized by exchange reactions of alkali metal fullerides with metal chlorides
(groups 2 and 13), by method using liquid alloys of metals with mercury (amalgams), and by
thermal decomposition of aluminum hydride. The samples are studied by X-ray diffraction,
nuclear magnetic resonance, electron paramagnetic resonance, Raman scattering, and
differential scanning calorimetry. It was found that the fulleride K2GaC60 is superconductor
with transition temperature Tc=22 K that exceeds Tc for K3C60 (19 K). Fullerides with In and B
are not supercomductors. The fullerides with composition CsnHgxC60 (n=2;3) are not
superconductors and crystallize in orthorhombic lattices.