LOCATION OF CO(II) IN ALUMINOPHOSPHATE COAPO-CJ2 - SINGLE-CRYSTAL STRUCTURE REFINEMENT

Cobalt-containing aluminophosphate AlPO4-CJ2 was hydrothermally synthe sized and characterized using single crystal X-ray diffraction. It was shown to possess 7.2(3)% of isomorphously substituted cobalt in a 5-c oordinate Al framework site and a 4-coordinated extra-framework Co(II) ion in a distorted square-planar arrangement with one terminal fluori de atom and three framework oxygen atoms (7.2(3)% occupancy). The Co i ncorporation does not change the cell parameters significantly (a=9.44 4(1), b=9.588(1), c=9.928(1) Angstrom). The orthorhombic P2(1)2(1)2(1) symmetry found for the Co-free analogue is also retained.