Potential constants of K2Zn(CN)4 in the crystal lattice

Publisher Website
Google Scholar
Abstract
The vibrational spectra of the crystalline materials K2Zn(CN)4, K2Zn(13CN)4, K2Zn(C 15N)4, K2 64Zn(CN)4, and K2 68Zn(CN)4 have been observed using infrared and Raman spectroscopy. A number of the potential constants in this system have been calculated from the various isotopic frequencies. It was necessary to constrain several of the potential constants which are essentially indeterminate. An analysis of these constraints was made to show that they are justified. A comparison of the potential constants of Zn(CN)−24 with isoelectronic Ni(CO)4 shows that for the zinc complex there is negligible back‐π bonding of the zinc d orbitals to the CN ligands. A number of interesting stretch–stretch and stretch–bend interactions are discussed.