A summary of the most common chemical descriptors (InChI Key and SMILES codes) for 1,4-Dicyanobenzene are summarized together with 3D and 2D structures and relevant physico-chemical properties.

What is the 1,4-Dicyanobenzene?

The molecule 1,4-Dicyanobenzene presents a molecular formula of C8H4N2 and its IUPAC name is 1,4-dicyanobenzene.

1,4-Dicyanobenzene is a molecule composed of two carbon atoms and four nitrogen atoms. It is a planar molecule with a flat, rectangular shape. The nitrogen atoms are arranged in a linear fashion, with the two carbons in the middle. The molecule has a slight dipole moment due to the asymmetric arrangement of the nitrogen atoms. 1,4-Dicyanobenzene is a pale yellow solid at room temperature and pressure. It is insoluble in water but soluble in organic solvents. It has a melting point of 48°C and a boiling point of 247°C. The molecule is relatively stable, but can decompose to form cyanogen and benzene..

3D structure

Cartesian coordinates

Geometry of 1,4-Dicyanobenzene in x, y and z coordinates (Å units) to copy/paste elsewhere. Generated with Open Babel software.

2D drawing


1,4-Dicyanobenzene BHXFKXOIODIUJO-UHFFFAOYSA-N chemical compound 2D structure molecule svg


Molecule descriptors

IUPAC name1,4-dicyanobenzene
InChI codeInChI=1S/C6H4I2/c7-5-1-2-6(8)4-3-5/h1-4H

Other names (synonyms)

IUPAC nomenclature provides a standardized method for naming chemical compounds. Although this system is widely used in chemistry, many chemical compounds have also other names commonly used in different contexts. These synonyms can come from a variety of sources and are used for a variety of purposes.

One common source of synonyms for chemical compounds is the common or trivial names, assigned on the basis of appearance, properties, or origin of the molecule.

Another source of synonyms are historical or obsolete names employed in the past, however replaced nowadays by more modern or standardized names.

In addition to common and historical names, chemical compounds may also have synonyms that are specific to a particular field or industry.

Reference codes for other databases

There exist several different chemical codes commonly used in orded to identify molecules:

Physico-Chemical properties

IUPAC name1,4-dicyanobenzene
Molecular formulaC8H4N2
Molecular weight128.131
Melting point (ºC)71
Boiling point (ºC)270
Density (g/cm3)1.27
Molar refractivity35.87
Topological polar surface area-

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.