Fluorescence quantum beats, observed among hyperfine substates of the N=8, 10, 15, 18, 19, 22, and 38 rotational levels of the 41 Ã(1Σ−u) state of C2N2, are discussed. The Zeeman splittings of some beats, for N=8, 19, and 22, are too small to arise from the spin–orbit coupling of a singlet/triplet pair of states, and are attributed to singlet/singlet interactions. A simple two-state singlet/triplet model, successfully used for a previous analysis of beats from N=12, accurately accounts for magnetic modulations observed for beats from the N=8 and N=18 rotational states.