Ca-3(P5O14)(2) was prepared by the solid-state reaction of CaBPO5 and
(NH4)(2)HPO4 as small single crystals. The cell dimensions were calcul
ated in the monoclinic system using its powder diffraction pattern and
were found to be a=8.695(5), b=8.999(6), c=12.940(1) Angstrom, beta=9
1.89(5)degrees, and the space group is probably P2(1)/m (No. 11) or P2
(1) (No. 4) with Z=4. The compound was characterized by SEM, IR spectr
oscopy, and EDX analysis of the single crystals. (C) 1997 Academic Pre
ss.