Two unprecedented aromatic guanidines supramolecular chains self-assembled by hydrogen bonding interaction

Add time:07/17/2019    Source:sciencedirect.com

Two aromatic guanidine derivatives, C6H5N = C(NHCy)2 (1), (n-TBA)C6H5NHC(NHCy)2Mo2O7 (2) (Cy = cyclohexyl), were synthetized with high yields. Both of them self-assembled into supramolecules via H-bond interactions. Single crystal XRD indicated that crystal 1 showed helix chains combining pseudo four-fold and pseudo six-fold symmetries, while crystal 2 presented ladder chains with alternate ring structures. In this paper, a novel way to design ladder-like supramolecular chains from helix chains was presented, using POMs (polyoxometalates) to provide protons to help assembly.

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