research papers
Two Fe3(CO)8(3-S)2 clusters with terminal N-heterocyclic carbenes have been synthesized. Of the eight carbonyl ligands, one deviates significantly from linearity. In one cluster, N-HS and C-HO hydrogen bonds combine the molecules into [101] sheets, while in the other cluster, N-HS and C-HO interactions link the molecules into [111] chains.