Chemistry Reference
In-Depth Information
Fig. 10 Synthesis of the first trefoil knot
O
O
Cl
H
2
N
H
N
N
Cl
H
2
N
O
O
CH
2
Cl
2
NEt
3
O
NH
O
O
H
N
O
O
NH
HN
HN
O
NH
N
O
NH
NH
O
O
H
O
H
HN
NH
O
N
O
Fig. 11
Left
: Synthesis of a trefoil knot thanks to hydrogen bonding.
Right
: Crystal structure of
the compound, with the non-covalent interactions indicated by
dashed lines
