The anion of pyrimidine-2-thiol as a ligand to molybdenum, tungsten, and iron. Preparation of complexes, their structure and reactivity

The syntheses and structures of [FeL3]– and [MoL4] are described (L = pyrimidine-2-thiolate). The structures are similar to those of the known Co and W homologous complexes. The unbound nitrogens can be cleanly protonated and alkylated, but they are weak donors to Lewis acids such as Fe and Cu.