Amido ligands tripodal tris

Beer, P D., Hopkins, P K., McKinney, J. D., Cooperative halide, perrhenate anion-sodium cation binding and pertechnetate extraction and transport by a novel tripodal tris(amido benzo-15-crown-5) ligand. Chem. Commun. 1999, 1253-1254. 

These ligands are tripodal tris amido ligands and their complexes are made by interaction of the tris lithium salts such as Li3[(Me3SiNCH2CH2)3N] with metal... 

During the last decade of the twentieth century, the inorganic and coordination chemistry of molybdenum has expanded substantially. Among the major developments in this period have been (1) the introduction of a versatile range of polydentate ligands, including the tripodal tris(amido), triamidoamine, and tris(pyrazolyl)borato species which have enabled the stabilization of novel species and chemistry ... 

C3-symmetrical tripodal ligands have been used to obtain amido complexes of family (86). If chiral substituents are present in the ligand periphery, some stereo discrimination is observed in the reaction with several chiral ketones and aldehydes. On the other hand, such systems can generate early-late heterobimetallics with metal-metal bonds (equation 41). Reaction of (91) with MeNC as well as the heteroallenes CO2, CS2, RNCO and RNCS led to insertion into the polar metal-metal bond. Tris (pyrazolyl) borate see Tris(pyrazolyI)borates) Zr and Hf complexes are other interesting examples of the type (86). In combination with MAO, they give promising results in ethylene and ethylene/hexene polymerizations. Substitution of these sterically crowded ligands allows adjustements of the environment of the active site to the... 

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