The first one includes Csp3 -Csp3 bonds and the second one includes Csp2-Csp2 bonds...
We can then connect this shot with Csp3 -Csp3 electronic density in perfect diamond and with Csp2 -Csp2 electronic density in perfect graphene
Since we choose a plane slicing the structure exactly along a C-C bond, you can observe fundamental differences between a Csp3 -Csp3 bond and a Csp2 -Csp2 bond!
To convince you let us foucus on these bonds in the case of an amorphous carbon mixture and of a perfect crystal...
Csp2 -Csp2 in PERFECT GRAPHENE
Csp2 -Csp2 in AMORPHOUS CARBON
Now, let's compare in both cases Csp3 -Csp3 bond...
