A few thing I dug up:
"STANNIC IODIDE [SnI4, CAS RN: 7790-47-8] a yellow to reddish crystals; decomposes in water, soluble in alcohol, ether, chloroform, carbon disulfide, and benzene; melt point 144 C; sublime at 180 C; also known as tin tetraiodide."
"Under normal circumstances tin is stable in water. When it comes in contact with hot water vapour a reaction results, forming tinoxide and hydrogen:
Sn + 2 H2O -> SnO2 + 2 H2
Some tin compounds hydrolyse in water. Examples include tin (IV) chloride, which forms tinoxide when heated."
"Inorganic-tin compounds are divided into two series: stannous, or tin(II), compounds and stannic, or tin(IV), compounds.Chemically, tin exhibits valencies of 2 and 4. It resists attack by water but is dissolved by strong acids and alkalis."