Chemistry Reference
In-Depth Information
Figure 4.11
Scheme illustrating the potential for base pairing between the Cd-based squares
in [Cd
4
(
N7
-G-Et-en)
4
(H
2
O)
4
(SO
4
)
2
] and complementary cytosines
Figure 4.12
Scheme of 1,3-alternate and cone conformations of metallocalix[4]arenes
that resembles an open box. Several metallocalixarenes with pyrimidine ligands
show that different confi gurations coexist in solution: cone, 1,3-alternate and inter-
mediate conformers (Figure 4.12). The principal interest in calixarenes is based on
their ability to function as hosts for small molecules or ions, as well as their metal
binding properties, either in the cavity or at the periphery. By the application of
