Unsymmetrical calixcrowns incorporating hard and soft loops as a new scaffold for multinuclear endo/exocyclic complexation and networking.
Unsymmerical calix[4]crowns containing [(O(4)S)(O(5))] (L(1)) and [(O(4)S(2))(O(5))] (L(2)) as crown loops were employed as new scaffolds both for complexation studies and for network formation. Reactions of L(1) and L(2) with KI in the presence of CuI afforded a copper(I) iodide cluster linked 1D-type endocyclic dipotassium(I) complex [K(2)(L(1))(Cu(7)I(9))](n) (1) and a copper(I) iodide cluster linked 1D-type endocyclic monopotassium(I) complex [KL(2)(mu(2)-Cu(3)I(4))](n) (2), respectively. By comparison, the reaction of L(2) with KPF(6) in the presence of CuI and HgI(2) afforded the 1-D endocyclic potassium(I) complex [K(L(2))(CuHgI(4))](n) (3), linked with a CuHgI(4) cluster unit. The formation of homo- and heterodinuclear complexes in solution was also confirmed by comparative NMR studies.
Lee
Jai Young
JY
Department of Chemistry (BK21) and Research Institute of Natural Science, Gyeongsang National University, Jinju 660-701, South Korea.
Lee
So Young
SY
Park
Sunhong
S
Kwon
Jongchul
J
Sim
Wonbo
W
Lee
Shim Sung
SS