Abstract: | The synthesis and crystal structure of the multidentate PPN ligand 2‐[bis(diisopropylphosphanyl)methyl]‐6‐methylpyridine (L ), C19H35NP2, are described. In the isostructural tetrahedral Fe and Co complexes of type LM Cl2 (M = Fe, Co), namely {2‐[bis(diisopropylphosphanyl)methyl]‐6‐methylpyridine‐κ2P ,N }dichloridoiron(II), [FeCl2(C19H35NP2)], and {2‐[bis(diisopropylphosphanyl)methyl]‐6‐methylpyridine‐κ2P ,N }dichloridocobalt(II), [CoCl2(C19H35NP2)], the ligand adopts a bidentate P ,N‐coordination, whereas in the case of the octahedral Mn complex {2‐[bis(diisopropylphosphanyl)methyl]‐6‐methylpyridine‐κ2P ,P ′}bromidotricarbonylmanganese(I), [MnBr(C19H35NP2)(CO)3], the ligand coordinates via both P atoms to the metal centre. |