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Naphthalene-2,6-dicarb-oxy-lic acid-1-methyl-pyrrolidin-2-one (1/2).

ABSTRACT: The asymmetric unit of the title compound, C(12)H(8)O(4)·2C(5)H(9)NO, contains one half-mol-ecule of naphthalene-2,6-dicarb-oxy-lic acid (NDA) and one mol-ecule of 1-methyl-pyrrolidin-2-one (NMP): the NDA molecules lie on the crystallographic twofold rotation axes. In the crystal, the components are linked by strong O-H?O hydrogen bonds and C-H?O inter-actions.

SUBMITTER: Wu B

PROVIDER: S-EPMC3050321 | biostudies-literature | 2010 Dec

REPOSITORIES: biostudies-literature

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Naphthalene-2,6-dicarb-oxy-lic acid-1-methyl-pyrrolidin-2-one (1/2).

Wu Bianhua B Peng Ge G Cheng Youwei Y Li Xi X Liu Jiyong J

Acta crystallographica. Section E, Structure reports online 20101224 Pt 1

The asymmetric unit of the title compound, C(12)H(8)O(4)·2C(5)H(9)NO, contains one half-mol-ecule of naphthalene-2,6-dicarb-oxy-lic acid (NDA) and one mol-ecule of 1-methyl-pyrrolidin-2-one (NMP): the NDA molecules lie on the crystallographic twofold rotation axes. In the crystal, the components are linked by strong O-H⋯O hydrogen bonds and C-H⋯O inter-actions. ...[more]

PMID: 21522708

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4,5-Dicarb-oxy-naphthalene-1,8-dicarb-oxy-lic anhydride-1,10-phenanthroline (1/1).

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

Project description: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.

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3,5-Diamino-4H-1,2,4-triazol-1-ium hydroxonium bis-(pyridine-2,6-di-carboxyl-ato)cobaltate(II) pyridine-2,6-dicarb-oxy-lic acid monohydrate.

Project description:The asymmetric unit of the title complex, (C(2)H(6)N(5))(H(3)O)[Co(C(7)H(3)NO(4))(2)]·C(7)H(5)NO(4)·H(2)O, contains a Co(II) ion coordin-ated by four O atoms and two N atoms from two dipicolinate ligands in a disorted octa-hedral environment, a protonated triazole mol-ecule, a neutral pyridine-2,6-dicarb-oxy-lic acid mol-ecule, a hydroxonium ion and a solvent water mol-ecule. In the crystal, the components are linked into a three-dimensional framework by inter-molecular O-H?O, N-H?O and N-H?N and weak C-H?O hydrogen bonds. In addition, ?-? stacking inter-actions with centroid-centroid distances in the range 3.4809?(7)-3.8145?(6)?Å are observed.

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