Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Lithium salts formaldehyde complexes

As might be expected, the course of the reaction is profoundly altered by inclusion of a lithium cation in the treatment of the complete borohydride salt. Ab initio calculation (Bonaccorsi et al., 1982) shows that LiBH4 in the gas phase is a tightly bound ion pair. The initial step of its reaction with formaldehyde or acetone involves coordination of the lithium to the carbonyl oxygen to give a complex with a linear C=0 Li- B array, at — 210 kJ mol-1 relative to reactants. This does not dissociate to BH 4 and... [Pg.73]

The racemic [Co(azasartacn)]Cl3 l/2CH30H C2H50H complex resulted fi om capping of [Co(taetacn)] + cation with ammonia and formaldehyde in aqueous solution in the presence of lithium carbonate. Only partial separation was achieved when attempts were made to resolve azasarcophaginate [Co(azasartacn)]- + cation into A- and A-forms by lEC. Therefore, the pre-resolved A- and A-[Co(taetacn)](C104)3 semiclathrochelates were used as initial compounds. As result, the A-and A-[Co(azasartacn)]2+ sarcophaginates were isolated as PFe salts and were additionally purified by fractional crystallization from aqueous solution [142]. [Pg.100]


See other pages where Lithium salts formaldehyde complexes is mentioned: [Pg.239]    [Pg.239]    [Pg.670]    [Pg.293]    [Pg.1606]   


SEARCH



Complex salts

Lithium complexes

Lithium salts

Salt complexation

© 2024 chempedia.info