# What is the formula for titanium(IV) chloride?

Nov 3, 2016

For $\text{titanic chloride}$? $T i C {l}_{4}$.

#### Explanation:

$\text{Titanic chloride}$ is a volatile liquid, ${\text{boiling point, 136.4 }}^{\circ} C$.

The $\left(I V\right)$ refers to the oxidation state of the metal, i.e. we have formally a $T {i}^{4 +}$ centre bound to 4 chloride ligands, and hence a $+ I V$ oxidation state.

Titanic chloride reacts with moist air according to the following rxn:

$T i C {l}_{4} \left(l\right) + 2 {H}_{2} O \left(l\right) \rightarrow T i {O}_{2} \left(s\right) + 4 H C l \left(a q\right)$

You don't tend to see it as much these days, but have you ever seen a light aircraft writing messages in the sky, i.e. skywriting? The airplane would carry a canister of titanic chloride, which could be opened and shut during the plane's maneouvers, and write messages in the sky by means of the solid $T i {O}_{2}$ formed in the moist air.

Note that $T i {O}_{2}$, $\text{titanic oxide}$, is used in vast quantities by the paint industry to produce white paint, that is $\text{whiter than white}$ due to the $T i {O}_{2}$ content.