Investigation on the artificial exchange signals induced by the RIDER effect in CODEX experiments

► Two-bond distance is far enough to suppress RIDER effect. ► For remote 13C, RIDER signal is rather small, generally no more than 5%. ► For remote 13C, RIDER signal is negligible to jump motions larger than 20°. ► CODEX can be used to detect slow motions in 14N-containing organic solids.