Re. Mulvey, SYNTHETIC AND STRUCTURAL DEVELOPMENTS IN HETERO-S-BLOCK-METAL CHEMISTRY - NEW RING-LADDERING, RING-STACKING AND OTHER ARCHITECTURES, Chemical Society reviews, 27(5), 1998, pp. 339-346
Hetero-alkali metal organic compounds are of interest because they can
exhibit superior reactivity to conventional organolithium reagents, S
tructurally well-defined mixed lithium-sodium and mixed lithium-sodium
-potassium compositions, based on a variety of organic ligands, are su
rveyed here. A complicated assortment of architectures with lithium-ri
ch, sodium-rich, or equimolar metal stoichiometries is revealed, These
structures are analysed with respect to the 'ring-laddering' and 'rin
g-stacking' concepts used previously in the rationalisation of organol
ithium structures. Important homometallic structures, which have appea
red since these concepts were reviewed, are also included. Finally, an
intriguing new class of mixed lithium-magnesium amide, based around a
n oxo or peroxo core, is described.