Mechanical grinding of the ClO4− salt of [Pt(H4tg-S)(terpy)]+ (H5tg = 1-thio-β-D-glucose, terpy = 2,2′:6′,2′′-terpyridine), newly prepared from [PtCl(terpy)]+ and H4tg−, caused its emission band at 630 nm to shift to 667 nm, while such mechanochromism was not observed for the PF6− salt that shows an emission band at 670 nm.
