title: Tetra-kis(5,7-dimethyl-quinolin-8-olato-κ(2)N,O)zirconium(IV) dimethyl-form-amide disolvate.
abstract: In the title compound, [Zr(C(11)H(10)NO)(4)]·2C(3)H(7)NO, the Zr(IV) ion is coordinated by four bidentate 5,7-dimethylquinolin-8-olate ligands in a slightly distorted square-anti-prismatic coordination environment. The asymmetric unit also contains two N,N'-dimethyl-formamide (DMF) solvent mol-ecules. In the crystal, a weak C-H⋯O hydrogen bond links the complex mol-ecule to a solvent mol-ecule and weak π-π stacking inter-actions [centroid-centroid distance = 3.671 (3) Å] also occur. One of the DMF solvent mol-ecules was refined as disordered over three sets of sites, with refined occupancies in the ratio of 0.391 (9):0.342 (10):0.267 (7).
authors.affiliation: Department of Chemistry, University of the Free State, PO Box 339, Bloemfontein 9300,  South Africa.
authors.forename: Maryke
authors.initials: M
authors.lastname: Steyn
authors.forename: Hendrik G
authors.initials: HG
authors.lastname: Visser
authors.forename: Andreas
authors.initials: A
authors.lastname: Roodt