Acta Crystallographica Section C

Crystal Structure Communications

Volume 67, Part 8 (August 2011)

	Cover illustration: The hydrogen bonding in 5-hydroxy-6-methyl-2-pyridone, showing six sets of hydrogen-bonded dimers forming puckered rings, in which the O atom of each N-HO interaction is also the acceptor in an O-HO hydrogen bond involving the 5-hydroxy group as donor. See Parkin & Behrman [Acta Cryst. (2011), C67, o324-o328].

• metal-organic compounds
• organic compounds

metal-organic compounds

Acta Cryst. (2011). C67, m275-m278  [ doi:10.1107/S0108270111020488 ] Tetraaquabis(2,6-diamine-7H-purine-N9)cobalt(II) benzene-1,2,4,5-tetracarboxylate tetrahydrate A. M. Atria, M. T. Garland and R. Baggio Formula: [Co(C5H7N6)2(H2O)4](C10H2O8)·4H2O Online 5 July 2011

Acta Cryst. (2011). C67, m279-m283  [ doi:10.1107/S0108270111026758 ] The bis(acetonitrile-N)bis[N,N-bis(diphenylphosphanyl)ethanamine-2P,P']iron(II) tetrabromidoferrate(II) and -oxido-bis[tribromidoferrate(III)] complex salts N. Maithufi and S. Otto Formula: [Fe(C2H3N)2(C26H25NP2)2][FeBr4] and [Fe(C2H3N)2(C26H25NP2)2][Fe2Br6O] Online 22 July 2011

Acta Cryst. (2011). C67, m284-m286  [ doi:10.1107/S0108270111021871 ] A rare `mesh of trees' (mot) net: poly[aquahemi[4-1,6-bis(1,2,4-triazol-1-yl)hexane](2-5-nitroisophthalato)cadmium(II)] J. Li, R.-T. Wu and H.-B. Li Formula: [Cd(C8H3NO6)(C5H8N3)0.5(H2O)] Online 22 July 2011

organic compounds

Acta Cryst. (2011). C67, o273-o277  [ doi:10.1107/S0108270111023985 ] Five related N'-(2,2,2-trichloroethanimidoyl)benzene-1-carboximidamides R. T. Boeré, T. L. Roemmele, S. Suduweli Kondage, J. Zhou and M. Parvez Formula: C10H10Cl3N3O and four analogues Online 5 July 2011

Acta Cryst. (2011). C67, o278-o282  [ doi:10.1107/S0108270111022293 ] N-(tert-Butoxycarbonyl)-L-valyl-L-valine methyl ester: a twisted parallel -sheet in the crystal structure of a protected dipeptide Ø. Jacobsen, H. G. Gebreslasie, J. Klaveness, P. Rongved and C. H. Görbitz Formula: C16H30N2O5 Online 5 July 2011

Acta Cryst. (2011). C67, o283-o287  [ doi:10.1107/S0108270111024322 ] N-(tert-Butoxycarbonyl)--aminoisobutyryl--aminoisobutyric acid methyl ester: two polymorphic forms in the space group P21/n H. G. Gebreslasie, Ø. Jacobsen and C. H. Görbitz Formula: Two polymorphs of C14H26N2O5 Online 5 July 2011

Acta Cryst. (2011). C67, o288-o293  [ doi:10.1107/S0108270111024140 ] Extensive hydrogen and halogen bonding, and absence of intramolecular hydrogen bonding between alcohol and nitro groups in a series of endo-nitronorbornanol compounds A. Lemmerer and J. P. Michael Formula: C8H8Br2N2O3, C13H13Br2NO3, C9H11Br2NO5, C22H19Br2NO5 and C8H9Br2NO6 Online 5 July 2011

Acta Cryst. (2011). C67, o294-o296  [ doi:10.1107/S0108270111024413 ] (4aR,8aS,9aR,10aS)-8a,9a-Difluoro-1,4,4a,5,8,8a,9,9a,10,10a-decahydroanthracene-4a,10a-diol hemihydrate G. Mehta, S. Sen and M. Thangam Formula: C14H18F2O2·0.5H2O Online 5 July 2011

Acta Cryst. (2011). C67, o297-o300  [ doi:10.1107/S0108270111024620 ] Glycinium semi-malonate and a glutaric acid-glycine cocrystal: new structures with short O-HO hydrogen bonds E. A. Losev, B. A. Zakharov, T. N. Drebushchak and E. V. Boldyreva Formula: C2H6NO2+·C3H3O4- and C2H5NO2·C5H8O4 Online 5 July 2011

Acta Cryst. (2011). C67, o301-o305  [ doi:10.1107/S0108270111024632 ] Concomitant polymorphism in the stereoselective synthesis of a -benzyl--hydroxyaspartate analogue S. Mekki, V. Rolland, S. Bellahouel, A. van der Lee and M. Rolland Formula: Two polymorphs of C32H31NO7S Online 5 July 2011

Acta Cryst. (2011). C67, o306-o309  [ doi:10.1107/S0108270111024280 ] A 2:1 sulfamethazine-theophylline cocrystal exhibiting two tautomers of sulfamethazine J. Lu, A. J. Cruz-Cabeza, S. Rohani and M. C. Jennings Formula: C7H8N4O2·2C12H14N4O2S Online 6 July 2011

Acta Cryst. (2011). C67, o310-o314  [ doi:10.1107/S0108270111023845 ] Solvatomorphism in (E)-2-(2,6-dichloro-4-hydroxybenzylidene)hydrazinecarboximidamide J. Gutierrez, R. Eisenberg, G. Herrensmith, T. Tobin, T. Li and S. Long Formula: C8H8Cl2N4O·2H2O, C8H8Cl2N4O·2CH4O and C8H9Cl2N4O+·C2H3O2- Online 6 July 2011

Acta Cryst. (2011). C67, o315-o318  [ doi:10.1107/S0108270111027491 ] Iminopyrrole derivatives containing electron-withdrawing substituents: the formation of dimers and supramolecular arrangements C. S. B. Gomes, C. A. Figueira, P. S. Lopes, D. Suresh, P. T. Gomes and M. T. Duarte Formula: C11H9FN2 and C12H9N3 Online 14 July 2011

Acta Cryst. (2011). C67, o319-o323  [ doi:10.1107/S0108270111027508 ] Conformations of diester triphenylphosphonium ylides with an ylidic ester or keto and ester ylidic groups F. Castañeda, P. Silva, C. A. Bunton, M. T. Garland and R. Baggio Formula: C27H27O5P, C27H27O5P·C2H4O2 and C26H27O4P Online 22 July 2011

Acta Cryst. (2011). C67, o324-o328  [ doi:10.1107/S0108270111026254 ] Channel-forming solvate crystals and isostructural solvent-free powder of 5-hydroxy-6-methyl-2-pyridone S. R. Parkin and E. J. Behrman Formula: C6H7NO2·0.1667C3H6O, C6H7NO2·0.1667C3H8O and five analogues Online 27 July 2011

Acta Cryst. (2011). C67, o329-o333  [ doi:10.1107/S0108270111027247 ] 2,2'-(Ethane-1,2-diyl)bis[2-(5-bromothiophen-2-yl)-1,3-dioxolane] at 100 K refined using a multipolar atom model M. Ahmed, S. Noureen, P. C. Gros, B. Guillot and C. Jelsch Formula: C16H16Br2O4S2 Online 28 July 2011

Acta Cryst. (2011). C67, o334-o336  [ doi:10.1107/S010827011102782X ] 2,3-Dimethoxy-10-oxostrychnidinium 2-(2,4,6-trinitroanilino)benzoate monohydrate: a 1:1 proton-transfer salt of brucine with o-picraminobenzoic acid G. Smith and U. D. Wermuth Formula: C23H27N2O4+·C13H7N4O8-·H2O Online 28 July 2011

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