Abstract
The reaction of some first-row transition metal acetate salts with 4-amino-3,5-di(2-pyridyl)-1,2,4-triazole (adpt) gives crystals of interesting octa-, tetra-, di- and mononuclear metal complexes with a range of metal-ligand binding modes observed. Specifically, an octanuclear iron complex [Fe
8
(adpt
− H
)
2
(OAc)
11
(O)
4
(OH)
2
] was formed, with each deprotonated amine group bridging two iron centres; two different nickel acetate complexes [Ni
2
(adpt)(adpt
− H
)(OAc)
3
(H
2
O)] and [Ni(adpt)
2
(OAc)
2
] co-crystallised in a 2:1 ratio, containing both adpt and adpt
− H
ligands and exhibiting several different ligand binding modes, whereas reaction of zinc acetate with adpt gave a tetranuclear complex [Zn
4
(adpt)
2
(OAc)
6
(OH)
2
] with the ligand remaining neutral.