几种单双糖及其部分固态金属糖络合物的远红外光谱研究

糖类物质的远红外谱有多个吸收峰 ,并且每种糖有其特征光谱。由于其相对强度顺序不同 ,我们可以选择前四个强峰用编号的方式来简单地区分各种糖。当形成络合物以后 ,出现金属氧振动的宽峰 ,说明远红外技术是一种判断络合物形成及探知其结构的有效手段

The FAR-IR Study of Several Mono and Disaccharides and Metal-Sugar Complexes in Solid State

FIR spectra of saccharides have many peaks. Each saccharide has its characteristic spectrum. The first, the second, the third, the fourth strongest peak appear at different regions(a, b, c, d) and the sequence (the first in a, the second in b, the third in c, the fourth in d) is characteristic. Due to the sequence in relative intensity is different, we use a simple method encoding four strong peaks to distinguish between different saccharides. We divide 500-100 cm-1 into ten ranges and encode each region as follows: 1(100-140 cm-1); 2(141-180 cm-1); 3(181-220 cm-1); 4(221-260 cm-1); 5(261-300 cm-1); 6(301-340 cm-1); 7(341-380 cm-1); 8(381-420 cm-1); 9(421-460 cm-1); 0(461-500 cm-1). For example, the codes of xylose are 6,538 and the codes of d-arabinose are 7 486. Each saccharide has a number. In this way, we can easily differentiate between saccharides. When the complexes have formed, there are broad peaks of M-O. The phenomena illustrate that FIR technique is an useful mean to determine the formation of the complexes and possibly detect their structures.