Atomistry » Silicon » Chemical Properties » Silicomes-oxalic Acid
Atomistry »
  Silicon »
    Chemical Properties »
      Silicomes-oxalic Acid »

Silicomes-oxalic Acid, H4Si3O6

Silicomes-oxalic Acid, H4Si3O6, which is the silicon analogue of mesoxalic acid:

Mesoxalic acid Silicomes-oxalic-oxalic acid

is formed by the action of moist air on octachlorosilicopropane, Si3Cl8, at 0° C. It is a white unstable powder, which is insoluble in water, but reacts with alkali forming silicate and hydrogen:

H4Si3O6 + 6NaOH = 3Na2SiO3 + 3H2O + 2H2.

It possesses reducing properties, indicated thus:

H4Si3O6 + 2O = 2H2O + 3SiO2.

Silico-oxalic acid and silicomes-oxalic acid yield identical forms of silica when treated with ammonia, and Martin 1 accounts for this fact by the following scheme, in which the polymerised and cyclic constitution of these two acids is set forth:

Ethyl ortho-silico-oxalate
ortho-silico-oxalic acid (unstable); 3 mols. condense
ortho-silicomes-oxalic acid (unstable); 2 mols. condense

Silico-oxalic acid

Silicomes-oxalic acid
NH3 aq.NH3 aq.

When ethyl ortho-silico-oxalate (hexa-ethoxysilico-ethane) is treated with sodium or potassium hydroxide solution, hydrogen is evolved, and a silicate formed by the interpolation of an oxygen atom between the two silicon atoms thus:

+ 2KOH + H2O = + 2ROH + H2.

Last articles

Tb in 6TVY
Si in 6Y7O
Rh in 6WRM
Rh in 6WRL
Ni in 6Y8Z
Ni in 6Y8Y
Na in 6ZXZ
Na in 7ACG
Na in 6YLS
Na in 6Y8Z
© Copyright 2008-2020 by
Home   |    Site Map   |    Copyright   |    Contact us   |    Privacy