154 ABIOGENIC ORGANIC-CHEMICAL EVOLUTION 



60,000 



50,000 



40,000 



30,000 



20,000 



10,000 







- 10,000 



o -20,000 



^ -50,000 

 ol -40,000 



U- 



- 50,000 



OIPHEf^n 



ACETYLENE 

 PROPrNE 



NAPHTHALENE,^ 

 BENZENE^-r^QlUefil ••'TZ. " 



£A/i^ 



craoPROPANE ^-scr '^ .;jgS 



craoPENrANE^.. .-Jii-* — y^p^i^^^ ^•* 



CrCLOHEXANE^ • - 



/' 



.^•^.•;r;^^'"" . 



BENZYL ALCOHOL 

 PHENOL 



METHANE 



- 60,000 



- 70,000 



- 80,000 



- 90,000 

 -100,000 

 -110,000 



Fig. 



BENZOQUINONE ., 



N^ \^^YD£^ ^CrCLOHEXANOL 



• — Xlcohols 



'UREA 



, HYDROQUINONE 



• RESORCINOL 



' PYROCATECHOL 



• BENZO/C AC/D 



GLYCOL 



• 



\ GLYCEROL 



' 



I Z 5 4 5 6 7 8 9 10 II 12 13 



NUMBER OF CARBON ATOMS IN THE MOLECULE 



11. Diagram of the free energy of organic 

 compounds. 



