Abstract: | Platinum(II) chloride can selectively be coordinated to the 2,2′-bipyridine moiety of the alkyl bridged sequential catechol/2,2′-bipyridine ligand 1 a-H2 and of the related ligands 1 a/b-Me2 and 2 . Reaction of ( 1 b-Me2 )PtCl2 with BBr3 produces the platinum(II) complex ( 1 b-H2 )PtCl2 while ether cleavage of the uncoordinated ligand 1 b-Me2 fails. Under basic conditions ( 1 a-H2 )PtCl2 forms polymeric/oligomeric species ( 1 a )Pt]n besides traces of the dinuclear complex ( 1 a )Pt]2. |