XPost: rec.arts.sf.written   
   From: jpolowin@sympatico.ca   
      
   On 2020-09-16 1:57 PM, Thomas Koenig wrote:   
   > (Actually, it's very probably wild UV-induced chemistry.   
   > In the absence of oxygen and with UV light from the Sun,   
   > just about anything can form and be fairly stable).   
      
   I don't think phosphines are likely to be very stable to UV photolysis,   
   even in a reducing environment.  Their concentration would come from the   
   equilibrium between their weird-ass synthesis and their being   
   decomposed.   
      
   But my intuition is biased from my having worked with several phosphine   
   compounds in an oxygen atmosphere.  Where they were more or less   
   spectacularly unstable.   
      
   Joel   
      
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