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Chemistry Forums for Students => Inorganic Chemistry Forum => Topic started by: RaZ on March 04, 2007, 07:08:20 PM

Title: Apical hydrogens downfield?
Post by: RaZ on March 04, 2007, 07:08:20 PM

Hi, I'm just trying to read my notes and one part didn't make sense. In proton NMR, if a chemical shift of H is very downfield, does it indicate a square pyramid structure with an apical hydrogen?  Because I thought hydrides in metal-hydrides are usually found upfield...For example in a structure such as: Ru(PPh₃)₃(OPh)(H) which is drawn as a square pyramid with an apical hydrogen my notes say that the chemical shift for the H is -22.7...did I make a typo??

Thanks.