Is the dimethylglyoximate anion ambidentate or not?
I'm not sure if this example qualifies as an example for dimethylglyoximate acting as an ambidentate ligand, because it, for me, is more like bidentate. Nonetheless, I'm presenting this example here only because both nitrogen and oxygen are donating lone pairs within the same molecule. See trinuclear copper complex below (ref: doi.org/10.1107/S160053680301331X):