Journal of the Southern African Institute of Mining and Metallurgy
versão On-line ISSN 2411-9717
STEYN, M.; VISSER, H.G. e ROODT, A.. Synthesis and crystal structure of tetrakis(1,3-diphenyl-1,3-propanedionato) zirconium(IV). J. S. Afr. Inst. Min. Metall. [online]. 2014, vol.114, n.2, pp. 183-188. ISSN 2411-9717.
The coordination compound teirakis(1,3-diphenyl-1,3-propanediona to)zirconium(IV), [Zr(DBM)4], (DBM = dibenzoyl methane/1,3-diphenyl-1,3-propanedionol) was synthesized and characterized by single-crystal X-ray diffraction. [Zr(DBM)4] crystallizes in the monoclinic space group P21/c (a = 24.769(4) Å, b = 10.216(5) Å, c = 19.314(4) Å, and β= 101.541(5)°). The coordination geometry around the zirconium atom, formed by the eight O-donating atoms of the four β-diketonates, is found to be a near-perfect square antiprism. Crystal packing is stabilized by C-H...π interactions throughout the crystal lattice. This structure is a noteworthy example of the application of ambient condition synthesis of zirconium compounds in N,N'-dimethylformamide (DMF) as reaction and crystallization solvent, highlighting the possibilities of aerobic condition metal purification through chelation.
Palavras-chave : zirconium; β-diketone; square-antiprismatic coordination polyhedron.