Ag2S2O8 meets AgSO4: the second example of metal-ligand redox isomerism among inorganic systems

作者：Gilewski Tomasz E; Leszczynski Piotr J; Budzianowski Armand; Mazej Zoran; Grzelak Adam; Jaron Tomasz; Grochala Wojciech^*

来源：Dalton Transactions, 2016, 45(45): 18202-18207.

DOI：10.1039/c6dt03283d

Valence (redox) isomerism based on electron exchange between a metal and a ligand is immensely rare in purely inorganic systems, with only one documented case, that of PbS2 which adopts two polymorphic forms corresponding to Pb(IV)(S2-)(2) and Pb(II)(S-2(2-)). Here we have taken advantage of metathetic reactions using salts of weakly coordinating anions and we have prepared for the first time Ag(I)(2)S2O8, silver(I) peroxydisulphate. The title compound crystallizes in the non-centrosymmetric Cc space group with partial disorder of the anionic sublattice. Ag(I)(2)S2O8 is a highly thermally unstable diamagnetic and colourless valence isomer of the antiferromagnetic and black Ag(II)SO4, described by us in the past.

• 出版日期2016