Alucard 11189 said:
In my experience he is quite popular, but I know a lot of physical chemists who are big fans of his work.
I don't know that many physical chemists, but that's beside the point. Still, when he's nicknamed 'the father of molecular spectroscopy' the physchem-ers will look up to him... and generally with good reason.
For organic chemistry, sure the technology back then was rubbish, but all the more reason to respect his skill: Jabir Ibn Hayyaan, the father of laboratory chemistry (even if he didn't know it at the time).