Extra Large Macrocycle: 40-Membered Macrocycle via 2:2 Cyclization and Its Dimercury(II) Complex
摘要:
A large 40-membered N(4)O(4)S(4) macrocyde (L(2)) was obtained through a 2:2 cyclization of the corresponding dithiol and dichloride as a minor product during the preparation of a 20-membered N(2)O(2)S(2) macrocycle (L(1), 1:1 cyclization product). Each macrocyde was successfully separated from the mixed products and identified. The larger macrocyde L(2) allowed the preparation of its dimercury(I) complex, adopting a one-dimensional (1D) stairway-like polymeric chain linked with the anion. A monomercury(II) complex of the smaller macrocyde L(1) was also prepared. Both complexes and the larger macrocyde L(2) were structurally characterized by the single crystal X-ray analysis.
Endo- and Exocyclic Coordination of a 20-Membered N<sub>2</sub>O<sub>2</sub>S<sub>2</sub>-Macrocycle and Cascade Complexation of a 40-Membered N<sub>4</sub>O<sub>4</sub>S<sub>4</sub>-Macrocycle
sandwich-type complexes [Cd(L1)2Br2] (3) and [Cd(L1)2I2] (4) were isolated. The treatment of L1 with Hg(ClO4)2 also afforded a sandwich-type complex [Hg(L1)2](ClO4)2 (5). One-pot reaction of L1 with a mixture of HgI2 and CdI2 afforded a dumbbell-type heteronuclear complex [Cd(L1)]2(μ-Hg2I6)}[Hg2I6] (6), in which the Cd(II) ion occupies the macrocyclic cavity. Further, such two endocyclic Cd(II) complex units are
使用20元N 2 O 2 S 2-大环(L 1)和40元N 4 O 4 S 4-大环(L 2)作为[1:1]和[2:2]环化产品分别用于制备包括级联复合物在内的多种类型的超分子复合物。六个配合物(1 - 6)较小的大环化合物的大号1包括离散的连续形式中,单-至异核,和内切到外切和内切/ exocoordination制备并进行了系统讨论了它们的配位模式。一,L的反应1用在三氟乙酸,得到环外1-d配位聚合物的存在下的CuI [(μ 4 -Cu 4我4)(H大号1) 2 ](CF 3 COO) 2 } Ñ( 1)。同时, L 1与Cu(ClO 4) 2 ·6H 2 O的反应得到典型的环内单核络合物[Cu II( L 1)](ClO 4) 2 ·H 2 O( 2)。在L的反应中在具有CdX 2(X = Br和I)的图1中,分离出同结构的夹心型复合物[Cd( L 1) 2 Br 2 ]( 3)和[Cd(