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A triclinic polymorph of hexa-nedioic acid.

ABSTRACT: Hexane-dioic acid (or adipic acid), C(6)H(10)O(4), crystallizes with two crystallographically independent half-mol-ecules in the asymmetric unit of the triclinic unit cell, space group P, as each mol-ecule lies across a crystallographic inversion centre. A monoclinic polymorph has been reported previously, most recently by Ranganathan, Kulkarni & Rao [J. Phys. Chem. A, (2003), 107, 6073-6081]. The mol-ecules adopt the expected zigzag structure and are linked via centrosymmetric pairs of O-H?O hydrogen bonds, forming infinite one-dimensional chains along [011]. These chains are stacked along the a axis. The crystal is further stabilized by weak C-H?O inter-actions.

SUBMITTER: Fun HK

PROVIDER: S-EPMC2968612 | biostudies-literature | 2009 Feb

REPOSITORIES: biostudies-literature

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A triclinic polymorph of hexa-nedioic acid.

Fun Hoong-Kun HK Chantrapromma Suchada S

Acta crystallographica. Section E, Structure reports online 20090228 Pt 3

Hexane-dioic acid (or adipic acid), C(6)H(10)O(4), crystallizes with two crystallographically independent half-mol-ecules in the asymmetric unit of the triclinic unit cell, space group P, as each mol-ecule lies across a crystallographic inversion centre. A monoclinic polymorph has been reported previously, most recently by Ranganathan, Kulkarni & Rao [J. Phys. Chem. A, (2003), 107, 6073-6081]. The mol-ecules adopt the expected zigzag structure and are linked via centrosymmetric pairs of O-H⋯O hy ...[more]

PMID: 21582276

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