摘要:
A new E, E-stilbenophane was synthesised and characterised. The crystal structure of this cyclophane shows that this molecule has a cup-shaped structure, which hosts a phenyl ring of neighbouring molecule as guest in its cavity with a pi-pi distance of about 3.7 angstrom. Moreover, the NMR spectra and theoretical analysis (gauge-independent atomic orbitals (GIAO) and quantum theory of atoms in molecules (QTAIM)) suggest that the silver recognition by E, E-stilbenophane host molecules is based on cation-pi interactions in which the pi-electrons of the double bonds play a major role.