摘要
The title compounds, C16H16O5 （I） and C16H16O5·H2O （II）, were structurally characterized by single-crystal X-ray diffraction. Compound I crystallizes in monoclinic space group P21/c with a = 10.5574（10）, b = 8.3576（9）, c = 16.5528（16） A, β = 91.762（3）°, Z = 4, R = 0.0524 and wR = 0.1084. The molecules are jointed into a chain by intermolecular O-H···O and C-H···O hydrogen bonds, which form layers parallel to （001）. The chains run along the [110] and [110] directions alternatively layer by layer, and are assembled into a network by intermolecular O-H···O （carboxyl） hydrogen bonds. On the other hand, the hydrate complex （II） crystallizes in the triclinic space group P1 with a = 5.1451（2）, b = 10.4583（4）, c = 14.8267（5） , α = 70.900（2）, β = 82.478（2）, γ = 81.359（2）°, Z = 2, R = 0.0393 and wR = 0.0983. The molecules are linked into infinite two-dimensional ribbons by O-H···O （carbonyl） and solvent-bridged O-H···O hydrogen bonds.
The title compounds, C16H16O5 （I） and C16H16O5·H2O （II）, were structurally characterized by single-crystal X-ray diffraction. Compound I crystallizes in monoclinic space group P21/c with a = 10.5574（10）, b = 8.3576（9）, c = 16.5528（16） A, β = 91.762（3）°, Z = 4, R = 0.0524 and wR = 0.1084. The molecules are jointed into a chain by intermolecular O-H···O and C-H···O hydrogen bonds, which form layers parallel to （001）. The chains run along the [110] and [110] directions alternatively layer by layer, and are assembled into a network by intermolecular O-H···O （carboxyl） hydrogen bonds. On the other hand, the hydrate complex （II） crystallizes in the triclinic space group P1 with a = 5.1451（2）, b = 10.4583（4）, c = 14.8267（5） , α = 70.900（2）, β = 82.478（2）, γ = 81.359（2）°, Z = 2, R = 0.0393 and wR = 0.0983. The molecules are linked into infinite two-dimensional ribbons by O-H···O （carbonyl） and solvent-bridged O-H···O hydrogen bonds.
基金
Supported by Scientific Research Fund of Hunan Provincial Education Department (No. 09B083)
the Natural Science Foundation of Hunan Province (No. 06JJ2067)
