Most abundant Ti-containing species in chemical equilibrium at solar metallicity as a function of temperature and pressure. Letters after clusters indicate energetic isomer ordering within isomers of the same size, i.e. -A indicates the GM isomer, while -B would indicate the second most energetically favourable isomer. Temperature pressure profiles for morning (in black) and evening (in white) terminators of a WASP 96b-like planet and a WASP 121b-Hke extrasolar planet are over-plotted.