The structural and thermodynamic properties of 75 polychlorinated thianthrenes (PCTAs) in the ideal gas state at 298.15 K and 1.013 ×105 Pa have been calculate
In this paper, 5?-O-tosyl-2,3?-anhydrothymidine has been synthesized and its crystal structure was analyzed. The crystal belongs to the triclinic system, space
Effects of Lewis acid BF3·OEt2,and BrCnsted acids TsOH,CF3COOH,H3PO4,and HClO4 as cocatalyst respectively on the ligand-free palladium-catalyzed amidocarbonyla
Twonew secolignans(1 and 2)were isolated from the roots of Urtica mairei Levl.The structures of these two compounds were determined on the basis of extensive sp
From the roots of Picrorhiza scrophulariiflora,two new sccoiridoid glycosides,named picrosecosides I and Ⅱ(1,2)have been isolated.Their structures were elucida
The HCNH and CNH2 adsorption on different coordination sites of Cu(100) was theoretically studied considering the cluster approach. The present calculations sho