摘要
本文对二种新合成的 2 ,3 二羟基萘二钼和四钼多酸有机衍生物 [n Bu) 4N]2 [Mo2 O5(OC1 0 H6O) 2 ](Ⅰ )和 [n Bu) 4N]2 [Mo4O1 0 (OC1 0 H6O) 2 (OCH3 ) 2 ](Ⅱ )进行了红外光谱与核磁共振波谱研究 ,发现[Mo2 O5]2 +中钼氧多桥键的红外振动频率较 [Mo4O1 0 (OCH3 ) 2 ]2 +中钼氧多桥键的红外振动频率红移 ,而在配合物Ⅱ中 2 ,3 二羟基中芳环的1 H化学位移较配合物Ⅰ中向低场移动。同时还发现含二钼配位中心[Mo2 O5]2 +的 [Mo2 O5(OC1 0 H6O) 2 ]2 - 与含四钼配位中心 [Mo4O1 0 (OCH3 ) 2 ]2 +的 [Mo4O1 0 (OC1 0 H6O) 2(OCH3 ) 2 ]2 - 生成条件的差异仅仅只在反应体系的 pH值的微小变化 。
The title organo-molybdate derivatives are synthesized and their IR, 1H NMR spectra have been determined and the relations between the structures and the 1H NMR and IR parameters have been studied.The results indicate that the red shift of the IR frequency of Mo-O-Mo in [(n-Bu) 4N] 2[Mo 2O 5(OC 10H 6O) 2] (complex Ⅰ) takes place to compare with that in [(n-Bu) 4N] 2[Mo 4O 10(OC 10H 6O) 2(OCH 3) 2] (complex Ⅱ) and lower filed shift of 1H NMR of the aromatic H atoms in complex Ⅱ occurs as contrasted to that in the complex Ⅰ.It is found also the organo-molybdate derivatives are very sensitive to the acidity of the chemical system.
出处
《光谱学与光谱分析》
SCIE
EI
CAS
CSCD
北大核心
2002年第1期36-38,共3页
Spectroscopy and Spectral Analysis
基金
北京市自然科学基金
北京市教委基金
北京市科干局基金资助课题
