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2-{[2-(Piperazin-4-ium-1-yl)ethyl-iminio]meth-yl}phenolate 0.06-chloride 0.94-perchlorate.

ABSTRACT: The structure of the title salt, C(13)H(20)N(3)O(+)·0.94ClO(4) (-)·0.06Cl(-), contains a zwitterionic Schiff base with a net positive charge and a perchlorate anion having substitutional disorder with Cl. In the cation, the azomethine N atom is protonated and donates hydrogen bonds to the phenolate O atom and to the tertiary N atom of the piperazine ring. In the crystal, two Schiff base mol-ecules are linked about a center of inversion by a pair of N-H?O hydrogen bonds. The resulting dimers are N-H?O and C-H?O hydrogen bonded to the perchlorate anions, forming a three-dimensional structure. The network is further consolidated by C-H?? inter-actions.

SUBMITTER: Reisi MR

PROVIDER: S-EPMC3247388 | biostudies-literature | 2011 Nov

REPOSITORIES: biostudies-literature

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2-{[2-(Piperazin-4-ium-1-yl)ethyl-iminio]meth-yl}phenolate 0.06-chloride 0.94-perchlorate.

Reisi Mohammad Reza MR Khaledi Hamid H Mohd Ali Hapipah H

Acta crystallographica. Section E, Structure reports online 20111022 Pt 11

The structure of the title salt, C(13)H(20)N(3)O(+)·0.94ClO(4) (-)·0.06Cl(-), contains a zwitterionic Schiff base with a net positive charge and a perchlorate anion having substitutional disorder with Cl. In the cation, the azomethine N atom is protonated and donates hydrogen bonds to the phenolate O atom and to the tertiary N atom of the piperazine ring. In the crystal, two Schiff base mol-ecules are linked about a center of inversion by a pair of N-H⋯O hydrogen bonds. The resulting dimers are ...[more]

PMID: 22220006

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