Relevant electronic interactions related to the coordination chemistry of tetracyanometallates. An XPS study

Abstract

In the K₂[M(CN)₄]·<italic>x</italic>H₂O (M = Ni, Pd, Pt) series, the CN ligand is found to donate electron density to the K ion, which is detected as a decrease in the K 2p BE. The charge donated is proportional to that removed from the inner metal (M) <italic>via</italic> π-back bonding.