Bidentate Coordination of Pyrazolate in Low-Coordinate Iron(II) and Nickel(II) Complexes

摘要

Pyrazolate ligands have rich coordination chemistry (Figure 1) that includes exo-bidentate bridging (mu-eta~1:eta~1,Figure 1 a,most commonly observed),endo-bidentate (eta~2,Figure 1b),terminal monodentate (eta~1,Figure 1c),and side-on,pentadentate (eta~5,Figure 1 d) coordination modes.