Molecules of (cyclohexylideneamino)oxyacetic acid, C(8)H(13)NO(3), (I), are linked into centrosymmetric dimers by pairs of O-H.O hydrogen bonds [H.O = 1.84 A, O.O = 2.6782 (12) A and O-H.O = 178 degrees ]. In [chloro(phenyl)methyleneamino]oxyacetic acid, C(9)H(8)ClNO(3), (II), the molecules are similarly linked into centrosymmetric dimers by pairs of O-H.O hydrogen bonds [H.O = 1.79 A, O.O = 2....