Search

In the title compound, [Er(IN)3(H2O)2] n, where IN is the isonicotinate anion, C6H4NO2−, the asymmetric unit contains one half-mol­ecule. The ErIII atom lies on a crystallographic twofold axis and is coordinated by four and two carboxyl­ate O atoms from bridging and chelating isonicotinate groups, respectively, and by two O atoms from water mol­ecules, yielding an eight-coordinate square-anti­prismatic geometry. In the crystal structure, the polymer features an infinite doubly carboxyl­ate-bridged chain-like structure with one chelating carboxyl­ate group on each metal centre. Adjacent chains are, in turn, connected to each other through inter­molecular O—H⋯O and O—H⋯N hydrogen bonds, forming a three-dimensional network. [ABSTRACT FROM AUTHOR]

The title compound, C20H17NO6, was synthesized by the reaction of syringaldehyde with hippuric acid. The molecule adopts a Z configuration about the central olefinic bond. The two benzene rings and the oxazolone ring are almost coplanar. The crystal structure is stabilized by weak intermolecular C—H...O hydrogen bonds. [ABSTRACT FROM AUTHOR]

In the title compound, C19H19N3O2, the 2-methoxy­phenyl ring is almost coplanar with the pyrazoline ring [dihedral angle 8.7 (4)°], while the phenyl ring forms a dihedral angle of 54.9 (2)° with the pyrazoline ring. [ABSTRACT FROM AUTHOR]

The crystal structure of the title compound, C18H11ClN2O4, contains intra- and inter­molecular hydrogen bonds that link the ketone and hydroxyl groups. The inter­molecular hydrogen bond results in the formation of a dimer with an R22(12) graph-set motif. [ABSTRACT FROM AUTHOR]