M═CR 2 (M = U, Y) Diphosphonioalkylidene and U≡O Terminal Oxo Multiple Bond Interactions Encoded in 13 C and 17 O Nuclear Magnetic Resonance Chemical Shift Anisotropies: Correlations of M═C Bond Order to Chemical Shift Tensors - Cameron F. Baker; Matthew Davis; John A. Seed; Aminata Sakho; Katherine L. Bonham; Ashley J. Wooles; Ralph W. Adams; Daniel Lee; Stephen T. Liddle (Journal of the American Chemical Society, 2026)