Solid-state structures of n-butyllithium-TMEDA, -THF, and -DME complexes

Vinyl addition polymerization of norbornene catalyzed by β-iminoamine Ni(II) complexes/methylaluminoxane systems

“…2-(Dimethylamino)benzaldehyde was prepared in a onepot procedure [31]. The ratio of n-butyllithium/N,N,N 0 ,N 0 -tetramethylethane-1,2-diamine (TMEDA) should be less than 1:1 in the ometallization step [32]. The condensations of 2-(dimethylamino) benzaldehyde with the aromatic amines were carried out in toluene at 80 C, with formic acid as catalyst.…”

From the Alkyllithium Aggregate [{(nBuLi)2⋅PMDTA}2] to Lithiated PMDTA

“…Whereas the bidentate ligand TMEDA usually forms dimers (e.g. with nBuLi [4] ) or bridged tetramers (e.g. with MeLi, [5] or nBuLi [4,6] ), the tridentate ligand PMDTA (1), also gives monomers (e.g.…”

Structural Characterization of Novel ortho‐Lithiated Imines

“…This bridging binding mode was previously observed by Jones and Nixon [29] and is related to the chelating and bridging modes commonly observed with tetramethylethylenediamine ligands. [30,31] Furthermore, the complex (Li-L 8 ) 2 ·DME retains DME after exposure to vacuum, unlike (Li-L 4 ·Et 2 O) 2 , which loses diethyl ether readily under vacuum. For five-coordinate complexes, τ is often used as a measure to quantify the degree to which the coordination geometry relates to that of an idealized square-pyramidal (τ = 0) or trigonal-bipyramidal (τ = 1) arrangement.…”