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[6 + 6] Schiff-base macrocycles with 12 imines: giant analogues of cyclohexane

2006; Royal Society of Chemistry; Issue: 23 Linguagem: Inglês

10.1039/b603985e

1364-548X

Joseph K.‐H. Hui, Mark J. MacLachlan,

Organometallic Complex Synthesis and Catalysis

Hexagon-shaped [6 + 6] Schiff-base macrocycles with 12 imine bonds are reported. These giant macrocycles possess 6 N2O2 coordination environments and mass spectrometry evidence for hexametallation of one macrocycle is provided. Semi-empirical calculations reveal two stable conformations with boat and chair geometries for the macrocycles metallated with Ni(II), analogous to the conformations observed for cyclohexane.