Acta Crystallogr Sect E Struct Rep Online
December 2008
In the title mol-ecule, C(15)H(15)N(3)O(2)S, the dihedral angle between the naphthalene ring system and the imidazole ring is 86.1 (2)°. In the crystal structure, weak inter-molecular C-H⋯O and C-H⋯N hydrogen bonds, as well as weak C-H⋯π inter-actions, connect mol-ecules, forming a two-dimensional network.
View Article and Find Full Text PDFActa Crystallogr Sect E Struct Rep Online
October 2008
The Sn atom of the title compound, [Sn(C(2)H(5))(2)(C(12)H(12)BrNO(3))], is in a distorted SnNC(2)O(2) trigonal-bipyramidal geometry and forms five- and six-membered chelate rings with the tridentate ligand. One C atom of one ethyl group is disordered with site occupancies of 0.61 (3):0.
View Article and Find Full Text PDFIn the title mol-ecule, C(13)H(10)N(2)O, the dihedral angle between the benzoxazole ring system and the benzene ring is 11.8 (1)°. In the crystal structure, mol-ecules are linked by inter-molecular N-H⋯N hydrogen bonds and π⋯π inter-actions [centroid-centroid distance = 3.
View Article and Find Full Text PDFA label-free electrochemical method for the detection of DNA-PNA hybridization using a water-soluble, ferrocene-functionalized polythiophene transducer and single-stranded PNA probes on the nanogold modified electrode is investigated. Nanogold modified electrodes can largely increase the immobilization amount of ss-PNA capture probe and lead to an increase of the electrical signal. The ferrocene-containing cationic polythiophene do not interact electrostatically with the PNA probes due to the absence of the anionic phosphate groups on the PNA probes.
View Article and Find Full Text PDFActa Crystallogr Sect E Struct Rep Online
December 2007
In the title compound, [Cu(C(16)H(14)N(5))(2)]Cl(2)·2CH(4)O·2H(2)O, the cationic metal complex resides on a crystallographic centre of inversion, with the Cu(2+) bonded to two bis-(1H-benzimidazol-2-ylmeth-yl)amines (IDB). The coordination geometry of the Cu(2+) ion is distorted octa-hedral with an N(6) ligand set. A three-dimensional framework structure is formed by means of hydrogen bonds and π-π inter-actions formed between imidazole and phenyl rings, and between phenyl and phenyl rings, with centroid-to-centroid distances of 3.
View Article and Find Full Text PDFObjective: To evaluate the effect of spinal-epidural and epidural anesthesia for pain relief in labor.
Methods: Totally 6671 cases selected from pregnant women delivered from Aug. 2001 to Oct.
Zhonghua Fu Chan Ke Za Zhi
June 2005
Objective: To investigate the influence of combined spinal-epidural analgesia (CSEA) and epidural analgesia (EA) and patient-controlled epidural analgesia (PCEA) on labor progress.
Methods: The partograms of 722 healthy vaginal delivery nulliparas were retrospectively analyzed in Department of Obstetric and Gynecology, First Hospital of Peking University. Three groups were divided among all subjects: CSEA group (259 cases) receiving CSEA + PCEA, EA group (215 cases) receiving EA + PCEA and control group (248 cases) without any analgesia method.