Relationships between the lengths,orders, hybridization of the atoms,and force constants of carbon—nitrogen and carbon—oxygen bonds

The bond order—bond length, bond length—average percentage s-character, and bond order—bond -shortening relationships have been obtained for CN and CO bonds. It has been shown that the differences in bond lengths are due chiefly to the specific features of the -bonds. The observed relationship between the length of the -bond and the average percentage s-character is linear. It has been noted that the bond lengths are most sensitive to the -order when it changes in the range 0.3–1.0. For CC, CN, and CO bonds, relationships have been obtained between the -order and the force constants, and for the single bonds the relationship between the average percentage s-character and the force constants has been obtained.