Other Single Bonds

These assumptions are consistent with the very large bond strength of the BF bond in BF3, which is larger than that of any other single bond. It has a bond dissociation enthalpy... 

Each skeletal boron or carbon atom has a hydrogen atom (or some other singly bonded ligand) terminally attached to it, by a bond radiating outward (exo) away from the center of the polyhedron, to which a pair of electrons is allocated. 

The G—N dissociation energies, computed from thermochemical data, show a considerable scattering, which is probably due to errors in A// - of the organic azides. D(H—N3) and D(G—N3) lie close to that of other single bonds between the same atoms but somewhat... 

Towards other singly-bonded electrophiles, the stannylamines behave as mild nucleophiles. The more reactive alkyl halides can be converted into the corresponding alkyl amines (equation 16-43 and 16-44)35, and acid anhydrides (equation 16-45)31 and acyl halides (equation 16-46)36 give the amides. 

The bond length for a normal boron-boron bond estimated from the observed values for other single bonds is 1.62 A. The larger value 1.80 A found in the tetragonal boron crystal is reasonable for a half-bond. 

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