材料期刊网

采用有机碱吡啶（ pyridine ）代替常见的强碱（如氢氧化钾或氢氧化钠等）调节反应混合物的pH值，探究水热温度对配位聚合物结构的影响。分别以2，5-二甲基对苯二甲酸和间苯二甲酸（以下简称H2 dmbdc和H2ip）为配体和硝酸锌通过水热合成配位聚合物[Zn3（dmbdc）3（py）2]n，1和[Zn4（H2O）（ip）4（py）6]n，2。研究发现，在较大的合成温度范围内（120℃～210℃），得到的配位聚合物结构也都不会随水热合成温度的改变而改变。由此表明当有吡啶参与反应时，配位聚合物的结构对水热温度具有一定的不敏感性。

By tuning the pH of the reactants mixture with py ( pyridine ) replaced of strong alkali ( NaOH or KOH),the influence of hydrothermal synthesis temperature on the structure of the coordination polymers was inves -tigated.In this paper,coordination polymer [Zn3(dmbdc)3(py)2]n,1 and [Zn4(H2O)(ip)4(py)6]n,2 have been prepared by hydrothermal synthesis with Zn ( NO3 )2 · 6H2 O and H2 dmbdc ( H2 dmbdc =2,5-dimethyl-benzenedicarboxylic acid ) or H2 ip ( H2 ip=isophthalic acid ).The result shows in the large arrange of synthesis temperature,the obtained crystal structure couldn't any change when the synthesis temperature in the range from 120℃to 210℃.Therefore,we can concluded that the structure of coordination polymers have insensitivity to hydro -thermal synthesis temperature in the presence of pyridine.