N,N'-bis(L-phenylalanyl)ethane-1,2-diamine was prepared by using L-phenylalanine and ethanediamine. The synthetic process was improved. The ligand reacted with copper dichloride to form the chiral coordination compound. The single crystal was obtained in methanol solution. It is shown by X-ray structural studies that the crystal belongs to the tetragonal system and the space group is I4. The lattice parameters are as follows: a = 2.5044(4) nm, b = 2.5044(4) nm, c = 0.8707(3) nm, V=5. 461(2) nm(3), D-c = 1.365 g/ cm(3), Z = 8. In the structure of the complex, the Cu(II) cation is coordinated by two nitrogen atoms, two oxygen atoms and one chlorine atom.

N, N'-bis(L-phenylalanyl) ethane-1, 2-diamine was prepared by using L-phenylalanine and ethanediamine. The synthetic process was improved. The ligand reacted with copper dichloride to form the chiral coordination compound. The single crystal was obtained in methanol solution. It is shown by X-ray structural studies that the crystal belongs to the tetragonal system and the space group is I4. The lattice parameters are as follows: a=2.5044(4) nm, b=2.5044(4) nm, c=0.8707(3) nm, V=5.461(2) nm^3, D(subscript c)=1.365g/cm^3, Z=8. In the structure of the complex, the Cu(Ⅱ) cation is coordinated by two nitrogen atoms, two oxygen atoms and one chlorine atom.

Two disubstituted benzocrown ethers have been synthesized by two methods with pyrocatechol,their compositions and structures have been characterized.

我们生活的这个世界上各种各样的物质都是由原子构成的.虽然原子的种类有不同,性质也有差异,但是它们之间存在着一系列结构、性质上的规律,特定的量变质变规律把它们联系起来,我们称之为元素周期系.而元素周期表正体现了这种规律.这是人类科学史上最伟大的发现之一.