Re: silanate?

"Uncle Al" <UncleAl0@xxxxxxxxxxxxx> wrote in message
news:4444FAC1.DFC30F31@xxxxxxxxxxxxxxxx
*selah* wrote:
References state that "silanate" is the biological form of silicon
found in the body, but I haven't been able to find any information
on the structure of silanate.

[Al]
Google: == siliconate sugars == 392 hits
Siliconates are penta- & hexacoordinate silicon oxygen-coordinated
to polyols (e.g., sugars). If you warm ethylene glycol, KOH, and
silica gel (not in glassware) you get a lovely solution of the dianion
(-OCH2CH2O-)2Si-OCH2CH2O-Si(-OCH2CH2O-)2 ...... [1]
It has been published in mainline journals as the biological silicate
solubilization and transport mechanism, with examples. There is a
substantial difference in the reactivity of threo- and erythro-sugars.

[hanson]
Are you guys talking about same thing here? "Siliconates" usually
refers to derivatives of Si(OH)4, whereas "Silantes" are usually
pointing to Si with covalent bonds like in Silicones of the formulae
SiR3(OH), SiR2(OH)2, SiR3(OH)3... none of which has been found
to occur in any biological matrix.

What really interests me is a researched/documented chem scheme
from Granite/SiO2 + CO2 in H2O with all the steps all the way into the
plants. --- Are there any Silicon compounds founded and needed in
the mammalian organism? --- Are there any websites with that info?

AFA [1] for HOCH2CH2OH - glycol to be present in (higher and
warm blooded organisms I have doubts about, but for C3 or longer
chain carbohydrates that 5-6 coord Si4+ claim has possible merit.
--
hanson



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