Methods to produce organotin compositions with convenient ligand providing reactants

A method for forming an alkali metal tin composition, the method comprising:

• reacting (A) ML, wherein M is Li, Na, K, Cs or a combination thereof and L is a dialkylamide represented by the formula —NR′2 or an acetylide represented by the formula —C≡CRS, wherein R5 is SiR″3 or R′, the three R″ are independently H or R′, and the R′ are independently a hydrocarbyl group with from 1 to 31 carbon atoms and optional unsaturated carbon-carbon bonds, optional aromatic groups and optional hetero atoms, (B) tin (II) halide, represented by the formula SnX2, wherein X is F, Cl, Br, I or a mixture thereof, in an organic solvent to form an alkali metal tin composition, wherein the alkali metal tin composition comprises a SnL3 moiety, which is Sn(NR′2)3 or Sn(C≡CRS)3, present with associated metal cations comprising M, and (C) M′″X2, wherein M′″ is beryllium, magnesium, calcium, strontium, barium, zinc, cadmium, mercury or a combination thereof and X═F, Cl, Br, I or a mixture thereof, to form an alkali metal alkaline earth metal/pseudo-alkaline earth metal tin composition.