organic compounds
Open access
The title compound, C14H14BrNO5, has two chiral C atoms. The quaternary C atom in the oxolanone ring has an S configuration, while the adjacent tertiary C atom has an R configuration. The oxolanone ring adopts an envelope conformation, with the flap C atom lying 0.298 (3) Å from the mean plane of the remaining four atoms. In the crystal, molecules are connected into chains along [010] via weak C—HO hydrogen bonds.
metal-organic compounds
Open access
In the title compound, [Cu(C11H9N6)2(H2O)2]n, the CuII atom lies on an inversion center and is coordinated by four N atoms from four 5-[4-(1H-imidazol-1-ylmethyl)phenyl]tetrazolate ligands and two water molecules in a distorted octahedral geometry. The ligands bridge the CuII atoms, leading to the formation of a two-dimensional network parallel to (100). The structure is further stabilized by O—HN hydrogen bonds within the network.