Crystal structure of KDCO3 has been analyzed using neutron diffraction
data measured just below and above the transition point. Final R-fact
ors are 0.059 in the low-temperature phase and 0.044 in the high-tempe
rature phase. Present structure analysis clearly shows the order-disor
der process of the (DCO3)(2)-dimers. (C) 1998 Elsevier Science B.V. Al
l rights reserved.