SYNTHESIS AND CRYSTAL-STRUCTURE OF ALUMIN UM COMPLEX WITH 3-HYDROXYFLAVONE

[Al(C15H9O3)(3)](2) . 2CHCl(3) . 8H(2)O was synthesized, and its cryst al structure was determined. It belongs to trigonal system, R3, a=b=1. 655 8(3) nm, c=3. 646 5(20) nm, alpha = beta = 90 degrees, gamma = 12 0 degrees, V = 8. 656 08(0. 005 86) nm(3). D-c = 1.45 g/cm(3), mu(Mo K alpha) = 3. 20 cm(-1), F (000) = 3 924. The crystal structure was sol ved by Patterson and Fourier techniques, and refined by a block-diagon al least-squares method. A total of 3 737 independent intensity data w ere collected, of which 1 033 with I greater than or equal to 3 sigma( I-0) were observed, R = 0. 091 8, Rw=0. 091 8. Al3+ ion was 6-coordina ted, bound to six oxygen atoms from three 3-hydroxyflavones to form a distortional coordination octahedron.