Figure 1.

(A) X-ray crystal structure of Me₂NNH₂. The thermal ellipsoids are drawn at 50% probability levels. Selected bond lengths (Å) and angles (deg): C6–N3 1.2957(15), N3–N4 1.3649(14), N4–C7 1.3526(15), C7–S1 1.6850(12), C7–N5 1.3272(16) Å; θ_{(N2–C4–C5–C6)} −5.88(17), θ_{(C5–C6–N3–N4)} −0.84(18), θ_{(N3–N4–C7–S1)} 177.52(8)°. (B) Three-dimensional fluorescence spectrum of MeHNNH₂ in 1% DMSO/PBS (10 μM) at pH 7.4.