coordinate bond

A coordinate bond, also known as a dative covalent bond, is the linkage of two atoms by a pair of electrons, both electrons being provided by one of the atoms (the donor). The coordinate bond is formally identical with the covalent bond. An atom capable of accepting the electrons is the acceptor, the molecule donating the electrons is the donor or ligand. Coordinate linkages occur widely in inorganic complexes. See also coordination compound.