Plz explain this.... mpounds. 1he alkys ui complexation

compounds. 1he alkyS UI Complexation Behaviour of Alkali Metals netaliIC and and organic The alkali metals generally have weak complexing ability. This is he alayafion viz, small size, hign nucear charge and availability of empty orhit se the factor that iavour lacking in alkali metals. nergy are oves like [Li(H,O) Cs{H,0) are known. A number of chelates are knouirn those with salicylaldehyde and acetyl acetone. innortant development in the field of alkali metal chemistry is the discovery of complexes with cyclic ethers and cryptands (cryptates) 1.e. With macro cyclic molecules containina nit The cyclic ethers are called crown ethers; they have varying sizes of rings and form complexes with alkali metal ions by donating electron deng agents than the crown ethers, with eight donor atoms (nitrogen and oxygen) surrounding the metal ion completely. The ability of crown ether r a cryptands to trap a metal ion depends on the size of both the cavity and the metal ion.