metal-organic compounds
Open access
The title compound, (C8H15N2)[LaCl4(CH3OH)(C3H7OH)], consists of one 1-butyl-3-methylimidazolium (BMI+) cation and one hexahedral tetrachlorido(methanol)(propan-2-ol)lanthanate anion. The LaIII ion is eight-coordinate, with the LaIII ion bridged by a pair of Cl atoms, so forming chains propagating along the a-axis direction. Each LaIII ion is further coordinated by two isolated Cl atoms, one methanol and one propan-2-ol molecule. The coordinated methanol and propan-2-ol molecules of the anion form O—HCl hydrogen bonds with the Cl atoms of inversion-related anions. The BMI+ cation froms C—HCl hydrogen bonds with the Cl atoms of the anion. The anions are located in the C faces of the triclinic unit cell, with an inversion center in the middle of the La2Cl2 ring of the polymeric chain.
organic compounds
Open access
In the title compound, C13H17NO3·0.5H2O, a new caffeic acid amide derivative, the solvent water molecule lies on a twofold axis and the terminal ethyl group appears disordered with occupancy factors of 0.525 (6) and 0.475 (6). The benzene ring makes an angle of 17.3 (2)° with the C=C—C—O linker. The presence of an ethylenic spacer in the caffeic acid amide molecule allows the formation of a conjugated system, strongly stabilized through π-electron delocalization. The C=C double bond in the linker is trans, similar to those previously reported in caffeic esters. The crystal is stabilized by O—HO, N—HO and C—HO hydrogen bonds. The molecules of the caffeic acid amide form a supermolecular planar structure through O—HO hydrogen bonds between a hydroxy group of one caffeic acid molecule and a carbonyl O atom of another. These planes interact via C—HO, O—HO and N—HO hydrogen bonds to form a three-dimensional network.