Prep. of tetratiodotin and its triphenylphosphine complex...

[acid_laced]

In the Andrews titration used to determine I- is the potassium iodate acting as a reducing or oxidising agent?

Also, what are the isomeric forms of (Ph3P)2SnI4....

Any help is greatly appreciated thanks..

[charco]

potassium iodate has to be an oxidising agent.


for the isomers, draw out an octahedral arangement (six ligands attached to a central ion) with the six ligands and you will see that the two triphenylphosphine ligands can either be next to each other or opposite each other.

[acid_laced]

will that complex have a charge on it?

[charco]

depends whether it's Sn(II) - yes, or Sn(IV) - no

[acid_laced]

K thanx!