Further illustration of electronic ↔ crystal-structure relationship is provided by the charge density projections. Figure show the charge density yellow volumes. In "glitter" C 6 (Fig. ) the charge density is expectedly different between tetrahedral C1 with sp 3 -like 4-lobes yellow shapes versus trigonal C2 (sp 2 -like with linear-like yellow volumes) thus confirming the chemical behavior difference between carbons belonging to the two crystal sites.