Tetra-µ-acetato-κ⁸O:O'-bis[(3,5-dimethyl-1H-pyrazole-κN²)copper(II)]

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dc.contributor.author Van Wyk, Juanita
dc.contributor.author Omondi, Bernard
dc.contributor.author Darkwa, James
dc.date.accessioned 2012-11-02T19:20:30Z
dc.date.available 2012-11-02T19:20:30Z
dc.date.issued 2011
dc.identifier.citation Van Wyk, J., Omondi, B. & Darkwa, J. 2011. Tetra-µ-acetato-κ⁸O:O'-bis[(3,5-dimethyl-1H-pyrazole-κN²)copper(II)]. Acta Crystallographica Section E, 67:m1299 en_US
dc.identifier.issn 1600-5368
dc.identifier.uri http://hdl.handle.net/10210/8067
dc.description.abstract Pyrazolyl ligands containing a carbonyl linker has been utilized to prepare a number of coordination compounds with palladium salts (Guzei et al., 2003; Mohlala et al., 2005, Ojwach et al., 2005). In these compounds the pyrazolyl carbonyl moiety appear to be robust enough to avoid hydrolysis. However in a few instances the presence of metal ions like Cu(II) (Deka et al., 2006) and Pd(II) (Nelana et al., 2008) appear to catalyze the hydrolysis of the benzoyl fragments. We have observed similar hydrolysis when reacting copper(II) acetate with (3,5-dimethyl-pyrazol-1-yl)-o-benzoyl-methane. The title compound formed from this reaction is the subject of this report. The half "solvent" molecule excluded from the structure had a total number of 30.7 electrons which is approximately half the total number of electrons that acetophenone has. Compound (I) crystallizes with two half molecules in the assymetric unit. The compound is dinuclear with each of the Cu atoms coordinated to four O atoms and a N atom from the pyrazole ligand. The O atoms are from acetate ions, all in the equatorial positions of a slightly distorted octahedral geometry around the Cu atoms. The N atom is bound trans to the Cu—Cu vector completing a the distorted octahedral geometry as axial ligands. The crystal structure of (I) is composed of two N—H···O hydrogen bonded chains (Table 1) that extend in the crystallographic b axis (Fig. 2). en_US
dc.language.iso en en_US
dc.publisher International Union of Crystallography en_US
dc.rights © International Union of Crystallography, 2011. Available online at: http://journals.iucr.org/e/. DOI: 10.1107/S1600536811032600 en_US
dc.subject X-ray crystallography en_US
dc.subject Crystallography en_US
dc.subject Pyrazolyl ligands en_US
dc.subject Palladium compounds en_US
dc.title Tetra-µ-acetato-κ⁸O:O'-bis[(3,5-dimethyl-1H-pyrazole-κN²)copper(II)] en_US
dc.type Article en_US

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