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2005
Strontium
I 1400
04- 021
LiSr2(NCN)I3: The First Empty Tetrahedral Strontium(II) Entity Coordinated by
Carbodiimide Units but Without Strontium—Strontium Bonding. — Colorless
transparent single crystals of the title compound are synthesized in high yields from
reactions of SrI2, NaCN (or KCN), NaN3, and LiI in a 2:1:1:2 ratio (Ta ampules, 880 °C,
3 d). LiSr2(NCN)I3 crystallizes in the cubic space group Fd3m with Z = 16. It exhibits
two interpenetrating three-dimensional networks made up from Sr tetrahedra capped
by NCN2- anions on their triangular faces and vertex-sharing LiI6 octahedra. —
(LIAO, W.; VON APPEN, J.; DRONSKOWSKI*, R.; Chem. Commun. (Cambridge)
2004, 20, 2302-2303; Inst. Anorg. Chem., RWTH Aachen, D-52074 Aachen,
Germany; Eng.) — W. Pewestorf
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