A summary of the most common chemical descriptors (InChI Key and SMILES codes) for dichloromercury are summarized together with 3D and 2D structures and relevant physico-chemical properties.

What is dichloromercury?

The molecule dichloromercury presents a molecular formula of Cl2Hg and its IUPAC name is bis(chloranyl)mercury.

3D structure

Cartesian coordinates

Geometry of dichloromercury in x, y and z coordinates (Å units) to copy/paste elsewhere. Generated with Open Babel software.

2D drawing


dichloromercury LWJROJCJINYWOX-UHFFFAOYSA-L chemical compound 2D structure molecule svg


Molecule descriptors

IUPAC namedichloromercury
InChI codeInChI=1S/2ClH.Hg/h2*1H;/q;;+2/p-2

Physico-Chemical properties

IUPAC namebis(chloranyl)mercury
Molecular formulaCl2Hg
Molecular weight271.50
Melting point (ºC)
Boiling point (ºC)
Density (g/cm3)
Molar refractivity
Topological polar surface area0

LogP and topological polar surface area (TPSA) values were estimated using Open Babel software.

The n-octanol/water partition coeficient (Kow) data is applied in toxicology and drug research. Kow values are used, to guess the environmental fate of persistent organic pollutants. High partition coefficients values, tend to accumulate in the fatty tissue of organisms. Molecules with a log(Kow) (or LogP) greater than 5 are considered to bioaccumulate.

TPSA values are the sum of the surface area over all polar atoms or molecules, mainly oxygen and nitrogen, also including hydrogen atoms.

In medicinal chemistry, TPSA is used to assess the ability of a drug to permeabilise cells.

For molecules to penetrate the blood-brain barrier (and act on receptors in the central nervous system), TPSA values below 90 Å2 are required. Thus, molecules with a polar surface area greater than 140 Å2 tend to be poorly permeable to cell membranes.