L. Alagna et al., NATURAL CIRCULAR-DICHROISM AT THE ND L-3 EDGE IN SINGLE-CRYSTALS OF NA3ND(C4H4O5)(3)2NABF(4)6H(2)O, Journal de physique. IV, 7(C2), 1997, pp. 463-464
We report the first attempt to detect natural circular dichroism (CD)
in single crystals in the X-ray region using the unique circularly pol
arised beamline BL-6A at ESRF. Measurements have been made at the Nd L
-3 edge on single crystals of Na3Nd(C4H4O5)(3) 2NaBF(4) 6H(2)O, which
crystallises in the enantiomorphic spacegroup R32. Preliminary data an
alysis shows that there is a residual CD which has opposite sign for e
nantiomeric crystals and a dissymetry factor of around 5 x 10(-3) whic
h is close to the value predicted for natural CD.