949467-53-2Relevant academic research and scientific papers
Synthesis and reactivity of metal complexes supported by the tetradentate monoanionic ligand bis(2-picolyl)(2-hydroxy-3,5-di-tert-butylbenzyl)amide (BPPA)
Chomitz, Wayne A.,Minasian, Stefan G.,Sutton, Andrew D.,Arnold, John
, p. 7199 - 7209 (2008/10/09)
Metal-halide complexes of Ti, V, Y, Zr, Al, Ga, and U supported by the tetradentate monoanionic (TDMA) ligand bis(2-picolyl)(2-hydroxy-3,5-di-tert- butylbenzyl)amine, H(BPPA), were synthesized and spectroscopically characterized. In addition, the complexes (BPPA)TiCl2, (BPPA)VBr 2, [(BPPA)YCl2]2, (BPPA)AlCl2, (BPPA)GaCl2, and (BPPA)UI3 were characterized by single-crystal X-ray crystallography. In all cases the ligand is bound κ4 to the metal center. All structurally characterized compounds are monomeric in the solid-state with the exception of [(BPPA)YCl 2]2, which exists as a dimer in the solid-state. The metal-alkyl complexes (BPPA)AlMe2 and (BPPA)Zr(CH2Ph) 3 were also synthesized and characterized, and an X-ray structure of (BPPA)Zr(CH2Ph)3 was obtained. The transformation of BPPA from a monoanionic to a dianionic ligand via proton abstraction was observed and monitored by NMR spectroscopy.
