Originally posted by pteridine
reply to post by Saurus
The molecules are not especially complex. Ethanol is a two carbon compound and formic acid is a one carbon compound. Esterification is a likely
outcome of propinquity. Plants making the same simple molecules would produce similar esters and the fact that they may occur in space has little to
do with their synthesis on earth.
BTW, the author misunderstands the naming system and assumes that butyronitrile [incorrectly referred to as "propyl cyanide"] is similar in toxicity
to cyanide ion. While it will not do a body good, it s not nearly as toxic as cyanide salts.
I agree with you about the toxicity of butyronitrile.
However, I think the synthesis of the ester in deep space is still remarkable for the following reason...
For the ester to form, certain conditions are needed:
- The molecules (ethanol and formic acid) must collide.
- The molecules must collide with the correct orientation.
- The molecules must collide with sufficient energy for the reaction to occur.
Statistically, the chance of all these conditions being met is small with low concentrations of the reactants, and for them to be met enough times to
create a high enough concentration of the ester to detect it on earth would imply a
massive concentration of both ethanol and formic acid.
So what causes these high concentrations? Life, maybe?
[edit on 9/5/2009 by Saurus]