(S,S)-N,N′-Dicyanoethyl-1,2-(2-hydroxyphenyl)ethylenediamine

Abstract

In the title mol­ecule {systematic name: 3,3′‐[1,2‐bis­(2‐hydroxy­phen­yl)ethane‐1,2‐diyldiimino]propane­nitrile}, C20H22N4O2, there are three different types of intra­molecular hydrogen bonds, one of each of the types N—H⋯O [H⋯O = 2.51 (3) Å], N—H⋯N [H⋯N = 2.21 (3) Å] and O—H⋯N [H⋯O = 1.71 (3) Å]. In the crystal structure, mol­ecules are linked into one‐dimensional chains in the a‐axis direction via inter­molecular O—H⋯N [H⋯N = 1.95 (4) Å] hydrogen bonds.