Hyperfine coupling and local structures of octacyanomolibudenum magnetic complexes and related compounds as studied by solid state 13C and 2H NMR

The local magnetic structures of Cu2[Mo(CN)8]·8H2O (1) were investigated. Based on the NMR results for 1 and related octacyanomolibudenum compounds, it is suggested that there are two distinct Cu(II) coordination environments in 1, namely a square planar and the structure that is largely deformed from the square planar, which may be important for ferromagnetic switching by photoinduced electron transfer from Mo(IV) to Cu(II) ion in a collective manner in the solid state.