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Tetramethylaluminates

In certain cases, a single-step electrochemical process can be derived out of a complex sequence of reactions. The electrolysis proposed by Ziegler35 and Lehmkuhl36, in which sodium tetramethylaluminate is electrolyzed between a lead anode and mercury in THF, is an example of complex reactions of very sensitive compounds which are translated into a simplified electrolytic procedure ... [Pg.671]

Q tetramethylaluminate complex (dormant, inactive species III, Al-mediated chain transfer)... [Pg.161]

Scheme 16 Formation of lanthanidocene tetramethylaluminate complexes via [carb-oxylate] [alkyl] interchange [142]... Scheme 16 Formation of lanthanidocene tetramethylaluminate complexes via [carb-oxylate] [alkyl] interchange [142]...
Scheme 20 Synthesis of heteroleptic tetramethylaluminate complexes via [carboxylate] [alkyl] exchange (top) or [alkyl] - [carboxylate] exchange (bottom, tetramethylaluminate route ) [147,148]... Scheme 20 Synthesis of heteroleptic tetramethylaluminate complexes via [carboxylate] [alkyl] exchange (top) or [alkyl] - [carboxylate] exchange (bottom, tetramethylaluminate route ) [147,148]...
Scheme21 Synthesis of heterobimetallic Ln(III)/Al carboxylate complexes via the tetramethylaluminate route [148]... Scheme21 Synthesis of heterobimetallic Ln(III)/Al carboxylate complexes via the tetramethylaluminate route [148]...
Scheme 31 Formation of mono(TMA) adducts and mono(tetramethylaluminate) complexes [188]... Scheme 31 Formation of mono(TMA) adducts and mono(tetramethylaluminate) complexes [188]...
Structural evidence of the formation of alkylated siloxide complexes was obtained from the reaction of homoleptic tetramethylaluminates Ln(AlMe4)3 with one equivalent of tris(ferf.butoxy)silanol HOSi(Of-Bu)3. This fast protonolysis reaction results in heterobimetallic Ln/Al complexes Ln[OSi(Of-Bu)3](AlMe4)2(AlMe3) (Ln = Y, Ce, Pr, Nd, La) via quantitative... [Pg.205]

X-ray structure analysis revealed a 7-coordinate rare-earth metal center with two asymmetrically / -coordinating tetramethylaluminate ligands, an asymmetrically / -coordinating siloxide ligand and one methyl group of a trimethylaluminum donor molecule (Fig. 28). Such heteroleptic complexes can be regarded as molecular models of covalently bonded alkylated silica surface species. Moreover, isoprene was polymerized in the presence of 1-3 equivalents of diethylaluminum chloride, with highest activities observed for (Cl) (Ln) ratios of 2 1 (Table 12) (Fischbach et al., 2006, personal communication) [150]. [Pg.207]

Scheme 53 Generation of heteroleptic tetramethylaluminate complexes via [aluminate] [amide] interchange [223]... Scheme 53 Generation of heteroleptic tetramethylaluminate complexes via [aluminate] [amide] interchange [223]...
Scheme 58 Synthesis of homoleptic lanthanide tris(tetramethylaluminate) complexes Ln[(/x-Me)2AlMe2]3 (Ln = Y, La, Ce, Pr, Nd, Sm, Gd, Lu)... Scheme 58 Synthesis of homoleptic lanthanide tris(tetramethylaluminate) complexes Ln[(/x-Me)2AlMe2]3 (Ln = Y, La, Ce, Pr, Nd, Sm, Gd, Lu)...
Scheme 62 Donor-induced aluminate cleavage of lanthanide(III) tetramethylaluminates as a general approach to unsolvated hydrocarbyl complexes [10,12,151]... Scheme 62 Donor-induced aluminate cleavage of lanthanide(III) tetramethylaluminates as a general approach to unsolvated hydrocarbyl complexes [10,12,151]...
The above-mentioned donor-induced cleavage reactions reveal that tetra-alkylaluminate complexes can behave as metal alkyls in disguise . This bonding feature is in accordance with various alkane elimination reactions observed for homoleptic and heteroleptic tetramethylaluminate complexes. [Pg.227]

Scheme 64 summarizes examples of [aluminate] - [X] transformation reactions (tetramethylaluminate route), which were accomplished for diverse Bronsted acidic substrates HX. [Pg.228]

See other pages where Tetramethylaluminates is mentioned: [Pg.897]    [Pg.897]    [Pg.1043]    [Pg.1045]    [Pg.475]    [Pg.104]    [Pg.156]    [Pg.156]    [Pg.159]    [Pg.161]    [Pg.171]    [Pg.178]    [Pg.182]    [Pg.183]    [Pg.184]    [Pg.184]    [Pg.187]    [Pg.188]    [Pg.198]    [Pg.199]    [Pg.201]    [Pg.203]    [Pg.205]    [Pg.211]    [Pg.216]    [Pg.223]    [Pg.223]    [Pg.224]    [Pg.226]    [Pg.227]    [Pg.227]    [Pg.230]    [Pg.230]    [Pg.233]    [Pg.241]    [Pg.242]   
See also in sourсe #XX -- [ Pg.217 ]



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Tetramethylaluminate complexes

Tetramethylaluminates, rare-earth

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