Fig. 2: Crystal structures of the Au(I) complexes.

Crystal structures of a DT4, b DT5, and c DT6. For each complex, the structure of a pair of closest neighbour molecules was extracted. For clarity, hydrogen atoms are omitted. Only the molecules in the foreground are shown in colour (grey, C; purple, N; yellow, Au; pink, pyrazole ring centroid), whereas the molecules in the background are shown in light blue. Intermolecular interactions are indicated with broken lines (red, Au–Au interaction; blue, Au–π interaction).