Molecular engineering. Part 14: Synthesis and self-assemblies of a back-to-back connected octacyanobiscavitand

초록

Octacyano-biscavitand 4, which consists of two tetracyanocavitands back-to-back connected to each other through a biphenyl unit, was synthesized. The formation of self-assembled coordination oligocapsule 10 of biscavitand 4 and Pd(dppp)OTf2 was studied by H-1 NMR, P-31 NMR, PGSE NMR, and SEM. Oligocapsule 10, having container units in the backbone, was chopped down to hetero-coupled biscapsule 11 by pyridinocavitand 9 which has a stronger binding affinity to Pd(II) without forming a homocapsule.

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