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Calixarene-based mol­ecular capsule from olefin metathesis

机译:基于烯烃复分解的基于杯芳烃的分子胶囊

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摘要

The reaction of tetra­kis­(all­yloxy)calix[4]arene with the first-generation Grubbs catalyst, followed by catalytic hydrogenation, gave the novel bis-calixarene 15,20,46,51,64,69,74,79-octa­oxatridecacyclo[32.28.8.83,28.113,53.122,44.09,14.021,26.038,70.040,45.052,57.059,63.07,80.032,73]octa­conta-1(63),3,5,7(80),9(14),10,12,21,23,25,28(73),29,31,34,36,38(70),40,42,44,52,54,56,59,61-tetra­cosa­ene benzene monosolvate, C72H72O8·C6H6. The structure consists of two calix[4]arene units connected by four-carbon chains at each of the four O atoms on their narrow rims, to form a cage. Each of the calix[4]arene units has a flattened cone conformation in which two of the opposite aryl groups are closer together and nearly parallel [dihedral angle between planes = 7.35 (16)°], and the other two aryl groups are splayed outward [dihedral angle between planes = 72.20 (8)°]. While the cavity contains no solvent or other guest mol­ecule, there is benzene solvent mol­ecule in the lattice. Two of the alkyl linking arms were disordered over two conformations with occupancies of 0.582 (3)/0.418 (3) and 0.33 (4)/0.467 (4). They were constrained to have similar metrical and thermal parameters.
机译:四(烯丙氧基)杯[4]芳烃与第一代Grubbs催化剂反应,然后催化氢化,得到了新颖的双杯芳烃15,20,46,51,64,69,74,79-八氧杂萘环[32.28] .8.8 3,28 .1 13,53 .1 22,44 .0 9,14 .0 21,26 .0 38,70 .0 40,45 .0 52,57 .0 59,63 .0 7,80 .0 32,73 ] octaconta-1(63),3,5,7(80),9 (14),10,12,21,23,25,28(73),29,31,34,36,38(70),40,42,44,52,54,56,59,61-丁四烯苯单溶剂化物,C72H72O8·C6H6。该结构由两个杯状[4]芳烃单元组成,两个杯状芳烃单元通过四个碳原子在其狭窄边缘上的四个O原子中的每一个连接,从而形成笼状结构。杯[4]芳烃单元均具有平坦的圆锥构象,其中两个相对的芳基基团更靠近且几乎平行[平面之间的二面角= 7.35(16)°],而另外两个芳基基团向外张开[平面之间的二面角= 72.20(8)°]。虽然空腔中不包含溶剂或其他客体分子,但晶格中存在苯溶剂分子。两个烷基连接臂在两个构象上无序,占有率为0.582 0.5(3)/0.418(3)和0.33 and(4)/0.467(4)。它们被约束为具有相似的度量和热参数。

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