Bis(O2S2 macrocycle) complexes of palladium(II)

Two isomeric dibenzo-O2S2 macrocycles L1 and L2 have been synthesised and their coordination chemistry towards palladium(II) has been investigated. Two-step approaches via reactions of 1:1-type complexes, [cis-Cl2LPd] (1a: L = L1, 1b: L = L2), with different O2S2 macrocycle systems (L1 and L2) have led to the isolation of the following bis(O2S2 macrocycle) palladium(II) complexes in the solid state: [Pd(L1)2](ClO4)2 (2a) and a mixture of [Pd(L1)2](ClO4)2 (2a) + [Pd(L2)2](ClO4)2 (2b).