Changing cages: The coordination preferences of the incorporated metals dictates the geometry of the heterometallic cages that are assembled by using AlL3 (HL=1-(4-pyridyl)butane-1,3-dione) as a metalloligand. A trigonal bipyramid and a giant capped octahedron (see picture; green Al, red O, blue N, purple Pd) were isolated. The unprecedented spontaneous resolution of the chiral trigonal bipyramidal complex M2M′3L6 with D3 symmetry was observed.
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Wu et al. (2009) studied this question.
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