The following articles are a selection of those recently accepted for publication in Acta Crystallographica Section B: Structural Science.
See also Forthcoming articles in all IUCr journals.
Synopsis: In this contribution different solid-state forms of the racemic compound (RS)-2-(2-oxo-pyrrolidin-1yl)-butyramide are studied from a structural and thermal point of view and compared to the enantiopure compound.
Synopsis: Analysis of 770 structures containing chloroform and 919 structures containing dichloromethane shows that around 80% of both molecules use their acidic C-H protons in hydrogen-bond formation in crystal structures, but their Cl atoms would appear to make only a limited contribution to crystal aggregation.
Synopsis: The origins and features of incommensurate structural modulation are discovered in a single crystal of Lu4AlCu2B9O23 on cooling down to 110 K.
Synopsis: Parallel stacking interactions between pyridine molecules in crystal structures and the influence of supramolecular structures in crystals on the geometry of interactions were studied by analyzing data in the Cambridge Structural Database (CSD).
Synopsis: The structures of three methyl-substituted thioureas and three related adducts with morpholine or 1,4-dioxane are presented and their hydrogen-bonding patterns discussed.
Synopsis: The crystal structure of the title compound was solved from neutron powder diffraction data and refined by energy minimization in the solid state. Weak intermolecular interactions were analysed by theoretical molecular calculations.
Synopsis: The extended Zintl-Klemm concept accounts for the structures of the three dimeric cyclotrisilicate anions [Si6O17]10-, [Si6O16]8- and [Si6O15]6- as Zintl polyanions of composition [-S4P2]10-, [-S2P4]8- and [-P6]6-, respectively.
Synopsis: The proton ordering plays an important role in the structural phase transitions of (NH4)3H(SO4)2 at low temperature. Crystal structure analysis using neutron diffraction reveals a sequential ordering of the ammonium groups and of the proton in the (SO4)H(SO4) dimer with decreasing temperature, related to the different phase transitions.
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