SCHEDULED MAINTENANCE
1,5,9-Triphosphacyclododecane complexes of molybdenum and tungsten; crystal structure of tricarbonyl[1,5,9-tris(isopropyl)-1,5,9-triphosphacyclododecane]-molybdenum(0)
Abstract
The first tritertiary 1,5,9-triphosphacyclododecane ligand complexes of molybdenum were prepared from the trisecondary 1,5,9-triphosphacyclododecane precursor. The tungsten trisecondary 1,5,9-triphosphacyclododecane analogue has been synthesised and also serves as an intermediate to the first tungsten complexes of the tertiary phosphine macrocyclic ligands. The synthetic routes are general and allow access to a range of macrocyclic triphosphines with alkyl, ω-aminoalkyl and alkenyl functions on phosphorus. All the compounds have been characterised spectroscopically and the molybdenum triisopropyl derivative, [Mo(CO)3{cyclo-(PriPC3H6)3}], structurally.
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