borohydride

thumb|right|140px|Ball-and-stick model of the tetrahydroborate anion,

Borohydride or tetrahydroborate refers to the anion and its salts. Borohydride or hydroborate is also the term used for compounds containing {{chem2|[BH_{4−n}X_{n}]−}}, where n is an integer from 0 to 3, for example cyanoborohydride or cyanotrihydroborate and triethylborohydride or triethylhydroborate . Borohydrides find wide use as reducing agents in organic synthesis. The most important borohydrides are lithium borohydride and sodium borohydride, but other salts are well known (see Table). Tetrahydroborates are also of academic and industrial interest in inorganic chemistry.