title: Crystal structure of piperidinium 4-nitro-phenolate.
abstract: In the title mol-ecular salt, C5H12N(+)·C6H4NO3 (-), the piperidine ring adopts a chair conformation and the cation is protonated at the N atom. In the anion, the nitro group is twisted at an angle of 10.30 (11)° with respect to the attached benzene ring. In the crystal, N-H⋯O hydrogen bonds link adjacent anions and cations into infinite chains propagating along [100]. The chains are linked by C-H⋯π inter-actions, forming sheets lying parallel to (001).
authors.affiliation: Department of Applied Physics, Sri Venkateswara College of Engineering, Chennai 602 117, India.
authors.forename: N Swarna
authors.initials: NS
authors.lastname: Sowmya
authors.affiliation: Department of Applied Physics, Sri Venkateswara College of Engineering, Chennai 602 117, India.
authors.forename: S
authors.initials: S
authors.lastname: Sampathkrishnan
authors.affiliation: Department of Physics, Presidency College, Chennai 600 005, India.
authors.forename: S
authors.initials: S
authors.lastname: Sudhahar
authors.affiliation: Department of Physics, CPCL Polytechnic College, Chennai 600 068, India.
authors.forename: G
authors.initials: G
authors.lastname: Chakkaravarthi
authors.affiliation: Department of Physics, Presidency College, Chennai 600 005, India.
authors.forename: R Mohan
authors.initials: RM
authors.lastname: Kumar
keywords: 4-nitro­phenol; C—H⋯π inter­actions; crystal structure; hydrogen bonding; mol­ecular salt; piperidinium