Infinite, Linear, Unbranched Borynide Chains in LiB(x)-Isoelectronic to Polyyne and Polycumulene The financial support by the Swiss National Science Foundation (projects 21-36586.92 and 4030-032775) is gratefully acknowledged. We thank Dr. V. Shklover for SEM pictures, Dr. M. Spahr for magnetic measurements, Dr. T. Chatterij and Dr. E. Souard for the neutron diffraction experiments, and Prof. Dr. S. Roth, Prof. Dr. H. Kuzmany, Prof. H. D. Lutz, and Dr. E. Suchanek for spectroscopic investigations.
Laboratory of Inorganic Chemistry ETH Zürich Universitätstrasse 6, 8092 Zürich (Switzerland).
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