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Which compounds besides elements did Sir Humphry Davy discover?

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Sir Humphry Davy is widely recognized for his pioneering work in electrolysis, which allowed him to isolate several chemical elements. While he is most famous for these elemental discoveries, his research also involved the identification and analysis of various chemical compounds.

Specific compounds discovered or investigated by Davy include:

Hydrogen telluride1
Hydrogen phosphide (also known as phosphine)1
Chlorine oxides: Davy discovered two oxides of chlorine between 1811 and 1815.1
Iodine compounds: Following his investigation into iodine, he conducted further research on various compounds formed by iodine and chlorine.1

Additionally, Davy’s work on hydrochloric acid was instrumental in correcting the scientific understanding of its relationship to chlorine, effectively disproving the prevailing theory that all acids required oxygen.1