Complexes of group 12 metal dihalides with 2-acetylpyridine-N-oxide N-4-methylthiosemicarbazone (H4MLO). The crystal structures and organization of [Zn(H4MLO)X-2] (X = Br, I)

Citation
E. Bermejo et al., Complexes of group 12 metal dihalides with 2-acetylpyridine-N-oxide N-4-methylthiosemicarbazone (H4MLO). The crystal structures and organization of [Zn(H4MLO)X-2] (X = Br, I), Z ANORG A C, 626(4), 2000, pp. 878-884
Citations number
43
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Inorganic & Nuclear Chemistry
Journal title
ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE
ISSN journal
0044-2313 → ACNP
Volume
626
Issue
4
Year of publication
2000
Pages
878 - 884
Database
ISI
SICI code
0044-2313(200004)626:4<878:COG1MD>2.0.ZU;2-J
Abstract
Reaction of group 12 metal dihalides with 2-acetylpyridine-N-oxide N-4-meth ylthiosemicarbazone (H4MLO) in ethanol afforded compounds [M(H4MLO)X-2] (M = Zn-II Cd-II, Hg-II; X = Cl, Br, I), the structures of which were characte rized by elemental analysis and by IR and H-1 and C-13 MMR spectroscopy. In addition, the complexes of ZnBr2 and ZnI2 were analysed structurally by X- ray diffractometry In [Zn(H4MLO)Br-2] the ligand is O,N,S-tridentate and th e metal is pentacoordinated. while in [Zn(H4MLO)I-2] the thiosemicarbazone is S,O-bis-monodentate and the Zn cation has a distorted tetrahedral coordi nation polyhedron. In assays of antifungal activity against Aspergillus nig er and Paecilomyces variotii, only the mercury compounds showed any activit y, and only [Hg(H4MLO)Cl-2] and [Hg(H4MLO)I-2] were competitive with nystat in against A. niger.