S. Onuma, H. Inoue, S. Shibata
Mar 1, 1976
Citations
0
Influential Citations
24
Citations
Journal
Bulletin of the Chemical Society of Japan
Abstract
The crystal and molecular structure of tris-(2,2,6,6-tetramethylheptane-3,5-dionato)lutetium(III) has been determined by X-ray diffraction method. The space group is Pmn21, and the unit cell is orthorhombic with a=17.713(4), b=10.638(2), c=9.973(3) A, and Z=2. The structure is isomorphous with the erbium analogue. The atomic parameters of the molecule (except for hydrogen atoms) were refined by the block-diagonal least-squares method to an R of 0.053. Three chelate rings are planar. One of them lies in the crystallographic mirror plane, and the other two rings are symmetrically related to each other with respect to this mirror plane. Six oxygen atoms of the three β-diketones form a distorted trigonal prism around the central lutetium ion, the average Lu–O distance being 2.19 A.