2-Bromo-benzaldehyde cyano-hydrin.

The title compound [alternatively called (2-bromo-phen-yl)-(hydr-oxy)acetonitrile], C(8)H(6)BrNO, is the reaction product of 2-bromo-benzaldehyde and hydrogen cyanide. Bond lengths and angles are normal. In the crystal structure, an intermolecular hydrogen bond between the hydr-oxy group and the nitrile N atom is established. In agreement with bonding considerations, a linear C-N⋯H acceptor geometry is observed. Each mol-ecule is a single donor and a single acceptor; extended hydrogen-bonded chains are formed along [100].