Linus Pauling: I put this slide in of hexamethylenetetramine to show tetrahedral character, the
tetrahedral character of atoms. The six carbon atoms are tetrahedrally bonded to the
neighbors and the four nitrogen atoms have bonds at three tetrahedron corners to the
carbon atoms. This is the first structure of an organic compound to have been determined
precisely, the bond lengths and bond angles. It was...
