dc.description.abstract | Co0.12A15.88P6024(OH)2.C2HIoN2.2H2 O, Mr
= 867"7, monoclinic, P2~/n, a = 8.992 (3), b =
17-760~i c=8.359(4) A, fl=105.39(4) ° , U =
1287.0 Z = 2, Dx = 2.24 g cm -3, a = 0.895 (5) A,
/.~ = 14.7 cm-1 F(000) = 871.4, R = 0.061 for 1163
observed reflections, recorded with an area-detector
diffractometer. The framework structure is similar to
that of A1PO4-21 [Parise & Day (1985). Acta Cryst.
C41, 515-520], with 4-, 5- and 6-coordinate aluminium atoms; Co 2+ replaces tetrahedral A13÷ ions, and
the 6-coordinate A13÷ has one water molecule as
ligand (in addition to 5 framework O atoms). In the
channels, the C and N atoms of the ethylenediamine
molecule were located; the molecules are disordered,
and occupy two mutually exclusive positions related
by an inversion centre. | |