Molecular Saddles. 7.<sup>1</sup> New 9,10-Bis(1,3-dithiol-2-ylidene)-9,10-dihydroanthracene Cyclophanes: Synthesis, Redox Properties, and X-ray Crystal Structures of Neutral Species and a Dication Salt
作者:Christian A. Christensen、Andrei S. Batsanov、Martin R. Bryce、Judith A. K. Howard
DOI:10.1021/jo001524k
日期:2001.5.1
dication salt 18(2+)(I(3)(-))(2).(I(2))(0.5). For comparative purposes, the structures are also reported for the precursor diol 15 and its dication salt 15(2+)(ClO(4)(-))(2), which was obtained by electrocrystallization. In the neutral cyclophanes 18-20, the 9,10-bis(1,3-dithiol-2-ylidene)-9, 10-dihydroanthracene moieties adopt a saddle-shaped conformation. The overall measure of folding, the dihedral angle
我们报道了通过二醇15和16与1,4-苯二羰基氯的酯形成大环化反应合成环烷18-20。化合物18和19在循环伏安图中显示两电子准可逆氧化波,分别在E(ox)(pa)0.52和0.47 V处产生指示物质(与乙腈中的Ag / AgCl相比),而2 + 2产物20在E(o)(x)(pa)0.51 V处经历单四电子氧化过程。报道了化合物18-20和指示盐18(2 +)(I(3))的X射线晶体结构(-))(2)。(I(2))(0.5)。为了进行比较,还报道了前体二醇15及其指示盐15(2 +)(ClO(4)(-))(2)的结构,该结构是通过电结晶获得的。在中性环烷18-20中,9,10-双(1,3-二硫醇-2-亚烷基)-9 10-二氢蒽部分采用鞍形构象。S(1)C(16)C(17)S(2)和S(5)C(21)C(22)S(6)平面之间的二面角(θ)折叠的总体度量为在15和18(分别为87.6度和83