Coordination chemistry of lipoic acid and related compounds.
Part 4.† Experimental and theoretical studies on the 1∶2 proton complex of N-(1-adamantyl)lipoamide‡
Abstract
N-(1-Adamantyl)lipoamide (2) has been prepared from racemic O⋯H+⋯O
C hydrogen bridge with a short O⋯O distance of 2.439(4)
Å. The C
O bonds [1.273(5) and 1.282(5)
Å] are significantly lengthened and the (O)C–N bonds [1.313(5) and 1.311(5)
Å] are shortened compared to the typical bond lengths in non-protonated