1973 Volume 46 Issue 9 Pages 2747-2751
Crystals of (−)-2,2′-bisbromomethyl-l′-binaphthyl have been subjected to crystal structure analysis in order to determine the absolute configuration of optically active 1,1′-binaphthyl derivatives. The crystals are orthorhombic, space group P212121 with Z=4 and the lattice constants are; a=10.360, b=13.052, c=13.178 Å. The structure was solved by the heavy atom method and the final R index was 0.064. The absolute configuration was determined as (S)-configuration by utilizing the anomalous dispersion effect of bromine atom.
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