二(5-磺基水杨酸)合硼酸稀土合成及其对干旱小麦幼苗脂膜的保护作用

Syntheses of Bis(5-Sulfosalicyl)borate Complexes with Rare Earth and Their Protection Effect on Lip-Membrane Damage of Dried-up Wheat Seedling

在水中合成了3种固态二(5磺基水杨酸)合硼酸稀土盐,元素分析、磺基水杨酸含量分析、IR、1HNMR、电导率及热分析等确定其化学组成通式为Re[B(Ssal)2]·nH2O(其中B(Ssal)3-2为磺基水杨酸合硼酸阴离子,Re为La、Nd、Sm3价离子,n=4,6)。观察了不同化合物对干旱条件下小麦幼苗脂膜损伤的保护作用,发现氯化钐、硼酸对小麦幼苗叶片的脂膜损伤无保护作用。磺基水杨酸及二磺基水杨酸合硼酸钐对小麦幼苗叶片的脂膜损伤有不同程度的保护作用,与对照组相比其MDA含量约分别低55%和64%,SOD活性分别高约49%和61%。

Three solid complexes Re\[B(Ssal) 2 \]· n H 2 O(Re=La(Ⅲ),Nd(Ⅲ),Sm(Ⅲ), \[B(Ssal) 2 \] 3- =bis(sulfosalicyl)borate anion, n =4,6) were synthesized in aqueous solution and characterized by elemental analysis , sulfosalicylic acid content analysis, IR, 1 H NMR, TG DTA and molar conductivity measurements. The protection effect of samaric chloride, sulfosalicylic acid, boric acid and Sm\[B(Ssal) 2 \]·6H 2 O on lip membrane damage of dried up wheat seedling leaf were compared. The results showed sulfosalicylic ac...