A bridging ligand is essentially a ligand that acts as a bridge connecting two metal centres in a complex. In naming a complex that includes a bridging ligand, the bridging ligand is preceded by "μ." In chemistry, a ligand is an atom, ion, or molecule (see also: functional group), that donates one or more of its electrons through a coordinate covalent bond to, or shares its electrons through a covalent bond with one or more central atoms or ions, usually metals. ... Hot metal work from a blacksmith Look up Metal in Wiktionary, the free dictionary. ... Synthesis of copper(II)-tetraphenylporphine, a metal complex, from tetraphenylporphine and copper(II) acetate monohydrate. ... Mu (upper case Î, lower case μ) is the 12th letter of the Greek alphabet. ...