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제 목 : Tailor-made Synthesis of Multilayered Trimetallocyclophanes via Transannula p-p Interactions
연 사 : 정옥상 교수님(부산대학교 화학과)
일 시 : 2018년 4월 5일(목) 오후 4시 15분
장 소 : 화학관 1층 첨단강의실(330118호)
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Tailor-made Synthesis of Multilayered Trimetallocyclophanes via
Transannula p-pInteractions
Ok-Sang Jung*
Department of Chemistry, Pusan National University, Pusan 609-735, Korea
Abstract
Synthesis and operation of a nano-demension 24 × 24 × 15 Å3 “left and right ball-joint-type
host-guest system” via one π∙∙∙π interaction and three NH∙∙∙O=C hydrogen-bonds along with
the combined helicity are described. The system consists of unprecedented conglomerate
aggregates of two distinct helical metallacyclophanes, chiral isomer (P)-[Pd3X6(L1)2]@(M)-
[Pd3X6(L1)(L2)] and its enantiomer (M)-[Pd3X6(L1)2]@(P)- [Pd3X6(L1)(L2)]are described.
Successive reactions afford desirable four-layered metallacyclophanes via tailor-made
procedure. Synthesis and operation of a nano-demension size multilayered metallacyclophane
system via one π∙∙∙π interaction along with the combined helicity are described. A synthetic
strategy of generation of new molecular species utilizing a provision of nature has been
reported: nano-dimensional (23(2) × 21(1) × 16(1) Å3) hetero four-layered trimetalla-
cyclophanes via the proof-of-concept experiments that utilize a suitable combination of π∙∙∙π
interactions between the central aromatic rings, tailor-made short/long spacer tridentate donors,
and the combined helicity are constructed. The unprecedented four-layered metallacyclophane
system’s behavior offers a landmark in the development of new molecular system.