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Nous presentons les etudes RPE et RMN haute resolution du 13 C des composes Ba x C 60 avec x=3 et 6. Le spectre RMN du compose Ba 3 C 60 presente une raie isotrope a 156 ppm et celui du compose Ba 6 C 60 montre une raie large autour de 135 ppm. Cette derniere presente une structure formee de trois composantes indiquant la...
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