Crystal structure of the bis­(cyclo­hexyl­ammonium) succinate succinic acid salt adduct

The crystal structure of the title salt adduct, 2C(6)H(14)N(+)·C(4)H(4)O(4) (2−)·C(4)H(6)O(4), consists of two cyclo­hexyl­ammonium cations, one succcinate dianion and one neutral succinic acid mol­ecule. Succinate dianions and succinic acid mol­ecules are self-assembled head-to-tail through O—H⋯O hydrogen bonds and adopt a syn–syn configuration, leading to a strand-like arrangement along [101]. The cyclo­hexyl­ammonium cations have a chair conformation and act as multidentate hydrogen-bond donors linking adjacent strands through inter­molecular N—H⋯O inter­actions to both the succinate and the succinic acid components. This results in two-dimensional supra­molecular layered structures lying parallel to (010).