The synthesis and characterization of an aluminophosphate with chiral layers; trans-Co(dien)(2)center dot Al3P4O16 center dot 3H(2)O

trans-Co(dien)(2) . Al3P4O16. 3H(2)O (GTex3) (dien - bis-(2-aminoethyl)amine) was prepared hydrothermally using Co(dien)(2)Cl-3 as a structure-directing agent in an aluminophosphate gel. The structure of GTex3 was determined using single-crystal X-ray diffraction. It contains chiral layers distinct from, but related to, those previously found in d,l-Co(en)(3) . Al3P4O16. xH(2)O. They are stacked in a helical fashion with only one enantiomer of the aluminophosphate macroanion in any one crystal. CO(C4N3H13)(2) . Al3P4O16. 3H(2)O, M(r) = 780.1, hexagonal, P 6(5) 2 2, a = b = 8.457(3), C = 63.27(2) Angstrom, V = 3920(2) Angstrom(3), Z = 6, rho(x) = 1.98 gcm(-3), rho(e) = 1.95 gcm(-3), lambda(MoK alpha) = 0.71073 Angstrom, mu = 10.99 cm(-1), F(000) = 2396, T = 293 K, R(1) = 0.0954 for 2277 reflections F > 4 sigma(F). (C) 1996 Academic Press, Inc.