(from the article `acid–base reaction`) ...an adduct in which the two species are joined by a covalent bond; proton transfers are not normally involved. If both the Lewis acid and base are ... ...coordination compounds in which the metal atom or ion is surrounded by two to six ligands. Ligands are ions or neutral molecules with ele... Found on http://www.britannica.com/eb/a-z/c/139
Also known as a dative covalent bond, 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 th... Found on http://www.daviddarling.info/encyclopedia/C/coordinate_bond.html