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Tetrahedrally distorted complexes of α-isosparteine, β-isosparteine and 2-methylsparteine with FeCl 2 have been synthesised. Crystal structures of these complexes are reported and compared with the structure of (−)-sparteine analogue. Coordination to Fe(II) center in β-isosparteine and 2-methylsparteine brings about an inversion at the N16 nitrogen and change in configuration at the ring junction...
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