【摘 要】
：
The title compound (C28H21ClN2O, Mr = 436.92) was synthesized by the cross- photodimerization of (E)-2-(2-phenylethenyl)benzoxazole and (E)-4-[2-(4-chlorophenyl
【机 构】
：
Department of Chemistry
论文部分内容阅读
The title compound (C28H21ClN2O, Mr = 436.92) was synthesized by the cross- photodimerization of (E)-2-(2-phenylethenyl)benzoxazole and (E)-4-[2-(4-chlorophenyl)ethenyl]- pyridine in sulfuric acid solution. Its molecular structure has been unequivocally determined by X-ray crystallography. The title compound belongs to triclinic system, space group Pī with cell parameters: a = 9.648(3), b = 10.458(4), c = 12.106(4) A。, r = 89.089(7), a = 75.644(6), B = 68.441(7)o, V = 1096.7(7) A。3, Z = 2, Dc = 1.323 g/cm3, F(000) = 456 and ((MoKa) = 0.198 mm-1. The final R and wR are 0.0627 and 0.1285, respectively for 1737 observed reflections with I > 2((I). S = 0.921 and (Δ/max = 0.001. The cyclobutane ring has a puckered conformation with four different aryl groups substituted on each carbon atom. The dihedral angles of the cyclobutane ring are 20.2 and 20.6o. The bond distances of the cyclobutane ring are 1.541, 1.555, 1.560 and 1.563 A。, respectively, which are slightly longer than that of the normal C-C single bond. The title compound is the only cross-dimer and its two heteroaryl groups are situated at the trans-1,3 position of the cyclobutane ring, revealing that the cross-photodimerization proceeds in a head-to-tail pattern with high stereo-selectivity.
其他文献
6-Chloro-2-diethylaminoethyl-3(2H)-pyridazinone was synthesized by the reaction of 6-chloro-3(2H)-pyridazinone and 2-diethylamionethyl chloride reaction in meth
Ionic partition equilibrium on a charged membrane immersed in a mixed electrolyte solution was systematically investigated and several models were established f
The effect of the functionallization of POMs on their properties was examined by the comparison between both titanium and its corresponding cyclopentadienyl sub
In order to use DNA for making molecular device, specific DNA patterns on a solid surface should be constructed. In this paper, we will show that the random int
The microkinetics of H2S removal by ZnO desulfurization in H2O-CO2-N2, H2O-CO-N2 andH2O-O2-N2 gas mixtures was studied by thermogravimetric analysis. Experiment
The title compound (PhNHNH)2C=O(CH3CN has been prepared and characterized by elemental analysis and IR spectrum studies. The single-crystal X-ray structure dete
An easy preparation of controlled alumina nanoparticles by the solution precipitate method has been carried out using dendrimer as surfactant. The effects of th
A simple and efficient procedure for synthesis of 1-hydroxymcthylene-1,1-bisphosphoates from aldehydes is deseribed. This method was applied to the synthesis of
Concentrations and spatial distributions of organic carbon (OC) and elemental carbon (EC) in atmospheric particles were measured at 8 sites in four cities (Hong
Let A be a unital C*-algebra, n ∈ N ∪ {∞}. It is proved that the isomorphism △n :Un0(A)/DUn0(A) → AffT(A)/△n0(π1(Un0(A))) is isometric for some suitable