Ion pairs in the crystal structure of potassium ethyl viologen hexacyanometallates(II) (original) (raw)

The structure and properties of potassium ethyl viologen hexacyanometallates(II), specifically K[Fe(CN)6] and K[Ru(CN)6], were investigated. These compounds, characterized by ion pairs and hydrogen bonding, demonstrate significant differences in absorption spectra related to charge-transfer transitions. Despite challenges in accurately calculating ion pair distances due to non-spherical ions, the findings indicate structural similarities between ion pairs in solution and solid state, providing insights into redox reaction mechanisms.