K. Gobbato et al., VIBRO-CONFORMATIONAL BEHAVIOR AND NORMAL-COORDINATE ANALYSIS OF FLUOROCARBONYL ISOCYANATE, FC(O)NCO, Spectrochimica acta. Part A: Molecular spectroscopy, 50(5), 1994, pp. 897-902
Vibrational data of vapour, liquid and matrix-isolated fluorocarbonyl
isocyanate, FC(O)NCO, were investigated. A subsequent normal coordinat
e analysis was performed for the A' species of the predominant planar
cis conformer (C=O double bond cis with respect to the vicinal N=C dou
ble bond). The following internal force constants were derived: f(C=O)
= 12.88 mdyn angstrom-1, f(C-F) = 6.20 mdyn angstrom-1 and F(C-N) = 4
.42 mdyn angstrom-1.