摘要
无水乙醇中回流制得ZnCl_2和ZnSO_4与2-氨基-4,6-二甲氧基嘧啶(AMP)的1:2和1:1固态配合物,用化学分析和元素分析确定它们的组成分别为Zn(AMP)_2Cl_2(A)和Zn(AMP)SO_4(B);用IR,XPS和~1HNMR研究了它们的成键情况。IR光谱分析说明配合物中,配体通过氨基N原子及嘧啶环上一个N原子与Zn^(2+)双齿配位,配合物B中SO_4^(2-)参与了配位;XPS谱证明配合物A中和B中SO_4^(2-)均参与了配位,并且N→Zn^(2+)键中有不同程度的反馈键;~1H NMR说明配合物A中有2个配体参与配位,配合物B中只有1个配体参与了配位。由此推测了它们的可能结构。
The complexes of ZnCl2 and ZnSO4 with AMP in molar ratios of 1: 1 and 1: 2 were prepared through reflux in alcohol. The compositions of the complexes were determined to be Zn(ANW)(2)Cl-2 (A) and Zn(ANT)SO4 (B)by chemical and elemental analyses. It was identified via IR analysis for the complexes that nitrogen atom of amino group and one of nitrogen atoms of pyrimidine coordinated to Zr2+ in bidentate fashion. Cl- in the complex of A and SO42- in the complex of B participated in the coordination to Zn2+ and some feedback characteristic was found in the bond of N-->Zr2+, which was proved by XPS spectra. Study on H-1 NMR for the complexes showed that two ligands joined the coordination to Zn2+ in the complex of A while one ligand did in the complex of B. Based on the above analyses, the structures of the complexes were presumed.
出处
《光谱学与光谱分析》
SCIE
EI
CAS
CSCD
北大核心
2003年第2期300-302,共3页
Spectroscopy and Spectral Analysis
基金
国家自然科学基金
陕西省教育厅专项基金
西北大学科研基金
