4. Give the systemic name for the complex when DMPS bond with Mercury?

When DMPS bond with Mercury, the Hg2+ complex is formed and the structure formula is as follow:


Rules of nomenclature for coordination compound ( complex ion) :

1. Within a complex ion, the ligands are named before the metal. Ligands are listed in alphabetical order, regardless of charge on the ligand. Prefixes that give the number of ligands are not considered part of the ligand name in determining the alphabetical order.

2. Greek prefixed (di-, tri-,tetra-,penta-, and hexa-,) are used to indicate the number of each kind of ligand when more than one is present. If the ligand itself contains a prefix of its kind, or is a polydentate, alternative prefixes are used instead such as bis-, tris- , tetrakis-, pentakis-, and hexakis-.

3. Thus, in the [HgC3H6O3S3)2]4+ ion, we name the 2,3- Dimercapto-1-propanesulfonate ligands first, then the mercury. Hence, the systemic name for the complex is bis-(2,3-Dimercaptop-1-propanesulfonate)Mercury (IV).