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DIBPillarnarenes (n = 5, 6) were synthesized. They showed different host-guest properties with n-octyltriethyl ammonium hexafluorophosphate G due to their different cavity sizes. DIBpillar5arene showed no complexation with G, while DIBpillar6arene formed a 1:1 complex with G with an association constant of 334 (±24) M(-1) in chloroform. In this letter, the first pillar6arene crystal structure and the first investigation of the host-guest chemistry of pillar6arenes are reported.
Han et al. (Fri,) studied this question.