covalent bond

https://doi.org/10.1351/goldbook.C01384
A region of relatively high @E01986@ between nuclei which arises at least partly from sharing of electrons and gives rise to an attractive force and characteristic internuclear distance.
See also:
agostic
,
coordination
,
hydrogen bond
,
multi-centre bond
Source:
PAC, 1994, 66, 1077. (Glossary of terms used in physical organic chemistry (IUPAC Recommendations 1994)) on page 1101 [Terms] [Paper]