Overall, the interpretation of the NMR data provides evidence that the same structural distortions, observed in the low-temperature XRD structure and associated with the presence of 3c-2e Yb-Me-Si interactions, persist at the higher temperature of the solid-state NMR measurements (ca. 300 K). Therefore, the Yb[CH(SiMe 3 ) 2 ] 3 complex possesses the Yb• • • C γ interaction, described as a pseudo bridging Yb-Me-Si group and previously observed for Lu[CH(SiMe 3 ) 2 ] 3 (see Figure ), at both low-and room-temperature and irrespective of the presence of the incomplete electronic f -shell.