Hydrogen bonds to Au atoms in coordinated gold clusters.

ABSTRACT: It is well known that various transition elements can form M···H hydrogen bonds. However, for gold, there has been limited decisive experimental evidence of such attractive interactions. Herein we demonstrate an example of spectroscopically identified hydrogen bonding interaction of C-H units to Au atoms in divalent hexagold clusters ([Au₆]²⁺) decorated by diphosphine ligands. X-ray crystallography reveals substantially short Au-H/Au-C distances to indicate the presence of attractive interactions involving unfunctionalized C-H moieties. Solution ¹H and ¹³C NMR signals of the C-H units appear at considerably downfield regions, indicating the hydrogen-bond character of the interactions. The Au···H interactions are critically involved in the ligand-

SUBMITTER: Bakar MA 

PROVIDER: S-EPMC5603579 | biostudies-literature | 2017 Sep

REPOSITORIES: biostudies-literature