Theoretical study of spin-spin coupling across the hydrogen (O-H...N) bond in adenosine derivatives.

The study of spin-spin coupling constants across hydrogen bond provides useful information about configuration of complexes. The interesting case of such interactions was observed as a coupling across an intramolecular hydrogen bond in 8-bromo-2',3'-O-isopropylideneadenosine between the -CH2OH (at 5'' proton) group and the nitrogen atom of adenine. In this paper we report theoretical investigations on the 4hJNH coupling across the H''-C-O-H.