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Naphthalene-1,8-dicarb-oxy-lic anhydride: a monoclinic polymorph.

ABSTRACT: A new type of naphthalene-1,8-dicarb-oxy-lic anhydride, C(12)H(6)O(3), was synthesized hydro-thermally. Unlike the two previously reported polymorphs, which crystallize in the ortho-rhom-bic space groups P2(1)2(1)2(1) [Shok et al. (1971). Kristallografiya, 16, 500-502; Grigor'eva & Chetkina (1975). Kristallografiya, 20, 1289-1290] and Pbca [Shok & Gol'der (1970). Zh. Strukt. Khim.11, 939-940], this present structure crystallizes in the monoclinic space group P2(1)/c. In this structure, the planar [total puckering amplitude Q = 0.0362?(15)] mol-ecules lie parallel to each other along the a axis.

SUBMITTER: Zhao D

PROVIDER: S-EPMC2983304 | biostudies-literature | 2010 Sep

REPOSITORIES: biostudies-literature

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Naphthalene-1,8-dicarb-oxy-lic anhydride: a monoclinic polymorph.

Zhao Dan D Li Feifei F Zhang Aiyun A

Acta crystallographica. Section E, Structure reports online 20100925 Pt 10

A new type of naphthalene-1,8-dicarb-oxy-lic anhydride, C(12)H(6)O(3), was synthesized hydro-thermally. Unlike the two previously reported polymorphs, which crystallize in the ortho-rhom-bic space groups P2(1)2(1)2(1) [Shok et al. (1971). Kristallografiya, 16, 500-502; Grigor'eva & Chetkina (1975). Kristallografiya, 20, 1289-1290] and Pbca [Shok & Gol'der (1970). Zh. Strukt. Khim.11, 939-940], this present structure crystallizes in the monoclinic space group P2(1)/c. In this structure, the plana ...[more]

PMID: 21587596

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