V. V. Gavrilenko

Alkali metal salts of acrylamide C3H4NOM (M = Li, Na, and K): Synthesis and vibrational spectra

Alkali metal salts of acrylamide C3H4NOM (M = Li, Na, and K) were synthesized for the first time by metallation of acrylamide with alkali metals, their alkyl derivatives, or hydrides. The structures of the compounds synthesized were studied by Raman and IR spectroscopy. Based on the results obtained, an ionic structure was proposed for the salts. The salts were tested as initiators of the anionic polymerization of acrylamide. The catalytic activity of C3H4NOM in the polymerization of acrylamide is not lower than that of the well known catalyst, KOBu1.

27Al NMR investigation of the products of the exchange reaction between lithium and sodium aluminum hydrides and MAlR4 tetraalkyl complexes

ConclusionsIn solution, the complexes MAlH3R (R=Me, Et) are unstable and disproportionate. The complexes MAlH2R2 and MAlHR3 are stable and the MAlHR3 complexes have a tendency to form associates.

A SIMPLE SYNTHESIS OF NON-SOLVATED GALLIUMTRIALKYLS

A simple synthesis of non-solvated galliumtrialkyls is proposed based on the reaction of alkyl iodides with a mixture or an alloy of magnesium and gallium in the absence of a solvent or in aliphatic hydrocarbons.

Preparation of complex compounds of alumoxanes with alkyl and hydride derivatives of alkali metals

Conclusions1.Controlled reaction of NaAlR4 and NaAlR3H (R=Alk) with water (2∶1) leads to formation of disodiumhexaalkylalumoxanates Na2(R3A1OAlR3). Free alumoxane Et2A1OAlEt2 has been obtained by the reaction of Na2(Et3A1OAlEt3) with allyl bromide.2.Lithium, sodium, and potassium hydrides are attached to alumoxanes in ether and THF with formation of 1∶1 adducts; in aromatic hydrocarbons only NaH and KH react, forming monohydride complexes M(HR2AlOAlR2). Attachment of lithium and sodium hydrides to alumoxane is not complete and is a reversible process.3.Controlled hydrolysis or ammonolysis with methylamine MA1R2H2 (M is Li or Na) leads to the formationof equilibrial mixtures of lithium and sodium mono- and dihydride alumoxane or alumoxane complexes with detachment of MH.

Synthesis of caprolactamates of group II metals

AbstractCaproiactamates of alkaline-earth metals and magnesium of the general formula

Application of a hydrocarbon-soluble magnesium — Aluminum complex, [(N-Bu)2Mg]n · AlEt3 for the metallation of CH acids

{\text{M[}}{\text{O}}]_2

Synthesis of trialkylaluminum derivatives by the reaction of non-solvated aluminum hydride with α-olefins

, where M = Mg, Ca, Sr, and Ba, were synthesized from alkoxides, hydrides, and organometallic compounds of these metals and ɛ-caprolactam. The catalytic activities of caprolactamates obtained under conditions of anionic polymerization of ɛ-caprolactam were compared. It was demonstrated that the purest caprolactamates and, hence, the most effective catalysts of anionic polymerization of lactams can be obtained from organometallic and hydride compounds of these metals. The reactivities of alkoxides of the alkaline-earth metals and magnesium increase in metallation reactions of ɛ-caprolactam in the order Mg < Ca < Sr < Ba.

Synthesis of volatile alkoxygallium hydrides and study of their thermostability

A convenient and practical method is proposed for the synthesis of lanthanide and yttrium alkoxides. The method involves dissolving the metals or their hydrides in a solution of dry HCl in the corresponding alcohol, with subsequent dehalogenation of the LnCl3 solution by an equivalent amount of alkali metal (Na, Li), The rareearth alkoxides are easily converted into acetylacetonates Ln(acac)3 by the action of acetylacetone.