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2004
Structure
D 2000
52- 007
T-Shaped Nets of Antimony Atoms in the Binary Antimonide Hf5Sb9. — Black
platelike crystals of the title compound are prepared from the elements in the Hf:Sb
ratio of 1:4 using Sb as a reactive flux (1075 °C, 32 h). As revealed by single crystal
XRD, Hf5Sb9 crystallizes in the tetragonal space group P4/n with Z = 2. The most
interesting structural feature is the unique T-shaped net of Sb atoms. This net is composed of undistorted square Sb4 planes of ideal D4h symmetry, which are interconnected
by four Sb—Sb bonds per square to the neighboring squares. The neighboring squares
are shifted relative to each other, so that the Sb layer is slightly puckered. —
(ASSOUD, A.; KLEINKE, K. M.; SOHEILNIA, N.; KLEINKE*, H.; Angew.
Chem., Int. Ed. 43 (2004) 39, 5260-5262; Dep. Chem., Univ. Waterloo, Waterloo,
Ont. N2L 3G1, Can.; Eng.) — W. Pewestorf
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