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The readily available homochiral ligand (1) was used to prepare four mononuclear nickel and cobalt complexes with a 2:1 ligand:metal ratio. X-ray crystal structures of these revealed that in all cases the N,N,O-tridentate ligand adopts facial coordination to the metal with the pyridine rings trans-disposed and the carboxylate and amine groups cis. The individual crystal structures of these compounds...
The sterically demanding pyridines 2,6-Ar 2 C 6 H 3 N [Ar=2,4,6-Me 3 C 6 H 2 (1) or 2,4,6-Pr i3 C 6 H 2 (2)] were prepared by a palladium catalysed Kumada C–C coupling reaction in high yield. Pyridine 1 reacted with one equivalent of GaCl 3 to afford the tetra-chloro gallate–pyridinium ion pair complex [GaCl 4...
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