Synthesis and structural study of complexes of nickel(II) with 4-amino-2,6-dimethyl-5-oxo-3-thioxo-2,3,4,5-tetrahydro-l,2,4-tria-zine

Gregorio López, Gregorio Sánchez, Gabriel García, Eduardo Pérez, Jaime Casabó, Elías Molins, Carlos Miravitlles

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Bis-ligand nickel(II) complexes with 4-amino-2,6-dimethyl-5-oxo-3-thioxo-2,3,4,5-tetrahydro-1,2,4-tria-zine have been prepared by reaction between the triazine and the corresponding nickel salt in the 2:1 molar ratio, respectively. Conductance, magnetic, and infrared and visible spectroscopy data have been used for structural assignments. Pseudooctahedral structures are proposed for the complexes with the triazine molecule acting either as a monodentate N-donor ligand or a bidentate N- and S-donor ligand. An X-ray structural determination carried out with [Ni(triazine)2(H2O)2](ClO4)2 shows that the triazine acts as a bidentate ligand via the 4-amino nitrogen and the 3-thioxo sulfur (Ni-S=2.377 Å; Ni-N=2.079 Å) and the two H2O molecules complete the hexacoordination of nickel(II) (Ni-O=2.135 Å). © 1990.
Original languageEnglish
Pages (from-to)213-220
JournalInorganica Chimica Acta
Issue number2
Publication statusPublished - 15 Dec 1990


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