Platinum-containing isopolytungstates: [Pt 3 W 11 O 41 ] 6.4− with a linear Pt 3 O 12 triad, [Pt II 2 W 5 O 18 ((CH 3 ) 2 AsO 2 ) 2 ] 4− and [Pt III 2 W 5 O 18 ((CH 3 ) 2 AsO 2 ) 4 ] 4− featuring direct Pt–Pt bonds | Publicación