Tetraaquabis[5-(4-pyridyl N-oxide)tetrazolato-kappaN(2)]cadmium: the intermediate in the synthesis of a tetrazole from a nitrile and an azide.
Zhao Xiang Yu, Xiao Ping Wang, Yaoyu Feng
文献索引:Acta Crystallogr. C 60(Pt 4) , m194-6, (2004)
全文:HTML全文
摘要
The intermediate [Cd(4-PTZ)(2)(H(2)O)(4)] [4-PTZ is 5-(4-pyridyl N-oxide)tetrazolate, C(6)H(4)N(5)O], (I), in the synthesis of 4-HPTZ, (II), from the cycloaddition reaction of 4-cyanopyridine N-oxide with NaN(3) in water using CdCl(2) as catalyst, was structurally characterized. The unique Cd atom lies on a twofold axis and the coordination geometry of the Cd atom is that of a slightly distorted octahedron, involving four water molecules and two tetrazolate ligands. The catalytic role of the Cd(2+) ion in the tetrazole generation reaction stems from the formation of (I). In acidic solution, (I) can be disassociated and the free ligand, (II), can be released.
相关化合物
相关文献:
Construction of Two Coordination Complexes Based on 5-(4-Pyridine N-oxide) Tetrazole (4-ptz) Generated by an in-situ [2+ 3] Cycloaddition Reaction. Xiang J, et al.
[Z. Anorg. Allg. Chem. 639(3-4) , 563-568, (2013)]