Ion cyclotron experiments

This quantity was the subject of several indirect attempts at calculation based on physical properties as well as ab initio computations. A direct measurement was finally achieved by ion cyclotron experiments and gave a value of 163kJmol (McMahon and Larson, 1982a) for A [HF(g)+ F (g) -> FHF (g)]. Shortly after, ab initio calculations with the basis set [(14s) (9p) (2d)/(10s) (lp)] fell in line with a value of 169 kJ mol" (Emsley et ai, 1983). Prior to this, a wide range of values for the bond energy had been canvassed, often with theoretical computations providing support (see Table 8). 

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