ABSTRACT
The Ag(I) atom in the title compound, [Ag(C(3)H(3)N(4)O(2))(C(18)H(15)P)(3)]·H(2)O, exists in a distorted tetra-hedral environment. The uncoordinated water mol-ecule forms only one hydrogen bond to the uncoordinated carbonyl O atom.
ABSTRACT
In the crystal structure of the title compound, [Zn(C(7)H(4)O(4)S)(C(10)H(8)N(2))(H(2)O)]·2H(2)O, the Zn(II) ion assumes a trigonal-bipyramidal coordination geometry completed by two N atoms from a 2,2'-bipyridine ligand, two O atoms from a 2-(3-thien-yl)malonate anion and a water mol-ecule. The S atom of the 2-(3-thien-yl)malonate ligand is disordered over two sites with an occupancy ratio of 0.701â (5):0.299â (5). Inter-molecular O-Hâ¯O hydrogen bonding is present in the crystal structure.
ABSTRACT
In the title complex, [Mn(CHO(2))(C(12)H(8)N(2))(2)]ClO(4), the Mn(II) cation is chelated by two 1,10-phenanthroline (phen) ligands and one formate anion in a distorted MnN(4)O(2) octa-hedral geometry. The two phen planes are oriented at a dihedral angle of 57.48â (11)°. The perchlorate anion links with the Mn complex cation via weak C-Hâ¯O hydrogen bonding.
ABSTRACT
In the crystal structure of the title compound, C(12)H(12)N(2) (2+)·2C(15)H(9)O(5) (-), the cation has site symmetry with the mid-point of C=C bond located on an inversion center. The two benzene rings of the anion are oriented at a dihedral angle 85.87â (6)°. In the crystal, inter-molecular O-Hâ¯O and N-Hâ¯O hydrogen bonds link the cations and anions into supra-molecular double chains, which are further connected into a three-dimensional network through inter-molecular C-Hâ¯O and π-π stacking between parallel pyridine rings [centroid-centroid distance = 3.4413â (12)Å] and between parallel benzene rings [centroid-centroid distance = 3.6116â (14)Å].
ABSTRACT
OBJECTIVE: To study the therapeutic mechanism of weitongning (WTN) in treating peptic ulcer. METHODS: Rat model of chronic gastric ulcer induced by glacial acetic acid was used to observe the effect of WTN on the curative quality, thickness of regenerated mucous membrane, epidermal growth factor (EGF) and nitric oxide (NO) contents in scar tissue around the gastric ulcer. RESULTS: The thickness of regenerated mucous membrane, EGF and NO contents in peri-ulcer scar tissue were higher in the model rats after WTN treatment than that in the untreated model rats (P<0.01 or P<0.05). CONCLUSION: WTN could elevate the quality of ulcer curing, to raise the EGF and NO contents in peri-ulcer scar tissue might be one of its mechanisms for preventing relapse of peptic ulcer.
