text: Unlike the other tin tetrahalides , tin ( IV ) chloride , tin ( IV ) bromide , tin ( IV ) iodide which contain tetrahedrally coordinated tin , tin ( IV ) fluoride has a planar structure consisting of octahedra sharing four corners with the terminal , unshared , fluorine atoms trans to one another .
simplified: Tin ( IV ) fluoride is made by reacting tin and fluorine .