Acta Cryst. (2009). E65, m1514-m1515  [ doi:10.1107/S1600536809043244 ]

Tetrakis(quinolin-8-olato-²N,O)hafnium(IV) toluene disolvate

J. A. Viljoen, H. G. Visser, A. Roodt and M. Steyn

Abstract: In the title compound, [Hf(C₉H₆NO)₄]·2C₇H₈, the hafnium metal centre is coordinated by four N,O-donating bidentate quinolin-8-olate ligands arranged to give a square-antiprismatic coordination polyhedron with a slightly distorted dodecahedral geometry. The average Hf-O and Hf-N distances are 2.096 (3) and 2.398 (3) Å, respectively, and the average O-Hf-N bite angle is 70.99 (11)°. The crystal packing is controlled by - interactions between quinoline ligands of neighbouring molecules and hydrogen-bonding interactions. The interplanar distances vary between 3.138 (1) and 3.208 (2) Å, while the centroid-centroid distances range from 3.576 (1) to 4.074 (1) Å.

Online 4 November 2009

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