orthosilicic acid

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

What is orthosilicic acid?

The molecule orthosilicic acid presents a molecular formula of H4O4Si and its IUPAC name is silicic acid.

3D structure

Cartesian coordinates

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

2D drawing

 

orthosilicic acid RMAQACBXLXPBSY-UHFFFAOYSA-N chemical compound 2D structure molecule svg
orthosilicic acid

 

Molecule descriptors

 
IUPAC nameorthosilicic acid
InChI codeInChI=1S/H4O4Si/c1-5(2,3)4/h1-4H
InChI KeyRMAQACBXLXPBSY-UHFFFAOYSA-N
SMILESO[Si](O)(O)O

Physico-Chemical properties

IUPAC namesilicic acid
Molecular formulaH4O4Si
Molecular weight96.11
Melting point (ºC)
Boiling point (ºC)
Density (g/cm3)
Molar refractivity
LogP
Topological polar surface area80.9

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.