Cluster Grignard Reagents

Activation of C–H bonds of hydrocarbons by the ArH–alkali metal systems in THF (ArH – naphthalene, biphenyl, anthracene, phenanthrene, trans-stilbene, pyrene). Alkylation of naphthalene and toluene with ethene

“…[28][29][30][31][32][33]). Recently, the metal vapour synthesis (MVS) and characterization of the cluster aryl Grignard reagents PhMg 4 X (X = F, Cl, Br) containing four magnesium atoms per one phenyl group and one halogen atom have been reported [34,35]. The clusters are quite stable under usual conditions in a halobenzene solution and are easily transformed into the corresponding cluster alkyl Grignard reagents RMg 4 Cl (R = C 7 H 15 , C 8 H 17 ) in the interaction with alkyl chlorides RCl.…”

Alkaline Earth Organometallics

“…Unlike counterparts containing the heavier alkaline earth metals, the butenyl groups remain uncoordinated in the solid state. Reactions with a minimally substituted fulvene such as dimethylfulvene may yield inseparable mixtures of products (eqn [15]). The magnesocene is slightly bent in the solid state with a centroid-Mg-centroid angle of 171 .…”

“…9 An IR study of the reaction of laser-ablated beryllium and magnesium atoms with acetylene in argon at 10 K indicates that BeCCH and MgCCH are products 10 ; under similar conditions in a methane/argon matrix, BeCH 3 has been identified. 15 None of these compounds is covered further in this chapter; a review of the chemistry of the gas-phase radical species is available. 15 None of these compounds is covered further in this chapter; a review of the chemistry of the gas-phase radical species is available.…”

Exploration of Mechanochemical Activation in Solid-State Fluoro-Grignard Reactions

“…For example, when excited state ( 3 P) magnesium atoms produced from laser ablation experiments were allowed to react with methyl halides diluted in an argon matrix, Grignard molecules CH 3 MgX, including the fluoride species, CH 3 MgF, were identified [38]. Similarly, cluster Grignard reagents (C 6 H 5 Mg n X), including the combination n = 4, X = F, have been produced by metal vapor synthesis [39,40]. Finally, although it does not involve the reaction of organometallic compounds, it might be noted that the reaction of (BDI)Mg-Mg(BDI) (BDI = κ 2 -{2,6-i Pr 2 C 6 H 3 NCMe} 2 CH) [41,42] with a series of perfluorinated and polyfluorinated arenes generates (BDI)MgF by a process deemed 'equivalent' to Grignard formation in solution [43].…”