Uploaded July 2017 | Updated September 2026, 1 week ago
In this video we use the Ti(III)-F solution we made in the previous video.
There is a famous test for Titanyl compounds, to treat them with H2O2 to yield dark orange-red complexes where the Titanyl-oxygen is replaced by a Peroxo-Ligand.
Literature also mentions that Fluorides would bleach the effect. But what happens here? It turns out the Fluoride sticks to the Titanium and does not form Aqua-Peroxo-complexes like other compounds would do. What is formed is the yellow [Ti(O2)F5](2-).
The Titanium is oxidized to Ti(IV) where it forms under acidic conditions the Titanyl (Ti-O) bond. This can be reacted with H2O2 to exchange it for a peroxo-ligand (Ti-(O2)).
We though this to be quite interesting as this is really an isolated and analyzed species and usually you characterize these complexes for their peroxo-group only.
In this video we use the Ti(III)-F solution we made in the previous video.
There is a famous test for Titanyl compounds, to treat them with H2O2 to yield dark orange-red complexes where the Titanyl-oxygen is replaced by a Peroxo-Ligand.
Literature also mentions that Fluorides would bleach the effect. But what happens here? It turns out the Fluoride sticks to the Titanium and does not form Aqua-Peroxo-complexes like other compounds would do. What is formed is the yellow [Ti(O2)F5](2-).
The Titanium is oxidized to Ti(IV) where it forms under acidic conditions the Titanyl (Ti-O) bond. This can be reacted with H2O2 to exchange it for a peroxo-ligand (Ti-(O2)).
We though this to be quite interesting as this is really an isolated and analyzed species and usually you characterize these complexes for their peroxo-group only.
![Copper Chemistry: K3[Cu(NO2)5]](https://i.ytimg.com/vi/zz23zENTWXk/mqdefault.jpg "Copper Chemistry: K3[Cu(NO2)5]
Explanation will follow soon")
