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Intermetallic cluster superconductors Mo8Ga41 and Mo4Ga20Sb are studied by NMR and NQR spectroscopy. For Mo8Ga41 superconductivity state appears below Tc = 9.8 K and for Mo4Ga20Sb superconductivity transition is Tc = 6.6 K [1,2]. Both superconducting compounds show differences from the BCS gap theory and enhanced electron-phonon coupling.