RESUMO
In the title compound, C(16)H(15)BrN(2)O(5)·2H(2)O, the dihedral angle between the two aromatic rings is 2.9â (2)° and an intra-molecular O-Hâ¯N hydrogen bond is observed. One of the water mol-ecule is disordered over two positions, with occupancies of 0.83â (3) and 0.17â (3). In the crystal structure, mol-ecules are linked into a three-dimensional network by inter-molecular O-Hâ¯O, O-Hâ¯(O,O), O-Hâ¯N and N-Hâ¯O hydrogen bonds. π-π inter-actions involving Br-substituted benzene rings, with a centroid-centroid distance of 3.552â (3)â Å are also observed.
RESUMO
In the title compound, C(16)H(16)N(2)O(4)·H(2)O, the dihedral angle between the two aromatic rings is 19.6â (2)°. In the crystal structure, mol-ecules are linked into a three-dimensional network by inter-molecular N-Hâ¯O, O-Hâ¯N and O-Hâ¯O hydrogen bonds.
RESUMO
In the title compound, C(17)H(18)N(2)O(5)·H(2)O, the dihedral angle between the two aromatic rings is 7.86â (7)° and an intra-molecular O-Hâ¯N hydrogen bond is observed. In the crystal structure, mol-ecules are linked into a three-dimensional network by inter-molecular O-Hâ¯O and N-Hâ¯O hydrogen bonds.
RESUMO
The Cu, Cr, Al, Ni and Ti in corrosion solution of oxidation equipment in supercritical water by inductively coupled plasma-atomic emission spectrometry has been investigated, the authors used catalysts (CuO/Al2O3) to oxidize unsymmetrical dimetylhydrazine in supercritical water in a stainless steel (1Cr18Ni9Ti) reactor. The test was operated under condition of 400-500 degrees C and 24-26 MPa. The results indicate that the dissolution of Cr in stainless steel were occurred in supercritical water and dissolution became severe with higher temperature and pressure.
