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The title compound, C(5)H(9)O(4)PS, was synthesized by the reaction of penta-erythritol with thio-phosphoryl chloride. In the crystal structure, the three six-membered rings all adopt boat conformations. Mol-ecules form chains along the c axis via inter-molecular O-H⋯O hydrogen bonds.
Public service management is essentially about inter-administration cooperation in a competitive, continuously changing environment, which occurs frequently in the provision of service chain. The paper presents an inter-administration cooperation model and intelligent and cooperative information system which makes public service management efficient. It… (More)
The asymmetric unit of the title compound, C(22)H(22)O(4)S·2H(2)O, contains one quarter of the organic mol-ecule and one half water mol-ecule, the site symmetries of the S atom and the water O atom being mm2 and m, respectively. The dihedral angle between the benzene rings is 76.27 (11)°. In the crystal structure, inter-molecular O-H⋯O hydrogen bonds link… (More)
In the mol-ecule of the title compound, C(21)H(18)O(9), the two aromatic rings are aligned at an angle of 49.7 (1)°.
In the mol-ecule of the title compound, C(25)H(20)N(2)O(3), the dihedral angles formed by adjacent benzene rings are 66.75 (8), 48.37 (8) and 71.43 (9)°. In the crystal structure, centrosymmetrically related mol-ecules are linked into dimers by inter-molecular N-H⋯O hydrogen bonds.
The asymmetric unit of the title compound, C(20)H(18)O(8), contains two mol-ecules with small geometric differences. The dihedral angles between the benzene rings are 62.94 (12) and 59.99 (12)°. The dihedral angles between the carboxylate groups in the 2- and 3-positions are 81.72 (13) and 65.54 (15)°, respectively. However, the dihedral angles between the… (More)
In the organic molecule of the title compound, C(16)H(10)O(8)·H(2)O, the dihedral angle between the two benzene rings is 42.30 (11)°. Extensive O-H⋯O hydrogen bonding helps to stabilize the crystal structure.