128 Dr. Carnelley on the Influence of Atomic Arrangement 

 Table (continued). 







Boiling- 

 point. 



Melting- 

 point. 



Dipropargyl, CH=C— CH 2 — CH 2 — C=CH 



HC CH 



Benzene, 



85 

 81 



Liquid. 



7 



HC CH 



/CH 3 

 Amyl benzene, C 6 H 5 .CH 2 .CH !J .CH\ 



CH 3 



Propyldimethyl 1 _ „ f ^ 3 



benzene, l^jCH ... 



f CH 2 .CH 3 

 Dietbjlmethyl benzene, C 6 H 3 i CH~.CH 3 

 1 CH 3 



rcH 3 



CH 3 

 Fentametbyl benzene, C 6 H«( CH 3 



193 



188 



r 178 \ 



1198-200/ 

 225* 



Liquid. 

 Liquid. 

 Liquid. 



50 



CH 3 

 Uh 3 



Melting- Melting- 



point, point. 



Propyl terephthalate 31°, and Isopropyl terephthalate 56° 

 Butyl „ Liquid, and Isobutyl „ 53 



Butyl hippurate 405 ; and Isobutyl hippurate 45*5 



So great indeed is the influence of the compactness of the 

 molecule, that it sometimes overbalances the influence of in- 

 crease of atomic weight : thus 



Melting- 

 point. 



Methyl terephthalate c 6 H 4 (cooCH U ° 



Ethyl 



Propyl 



Butyl 



CH/ COO.CH,CH 3 



x COO.CH 2 .CH 3 



c H /COO CH 2 .CH 2 .CH 3 



6 4 \COO CH 2 .CH 2 .CH 3 ' 

 c H /COO CH 2 .CH 2 .CH 2 .CH 3 



6 4x COO CH 2 .CH 2 .CH 2 .CH 3 Lif l uid - 



31 



