Figure 4: The structural decomposition of [Au6(dppp)4]2+.

(a) The decomposition of [Au6(dppp)4]2+ cluster into four ligands and an Au core. (b) The decomposition of the inner Au core into two triangular Au3 elementary blocks, each block being in the Δ1 valence state. Colour code: Au—magenta (bottom flavour); C—black; P—wine. The R groups are omitted for clarity.