Two Interpenetrated and Polycatenated Zn(II) Coordination Polymers: Syntheses, Structures and Luminescent Properties

Two fascinating Zn(II) entangled coordination polymers, vertical bar Zn(eoba)(bbi)vertical bar(n)center dot nH(2)O (1) and vertical bar Zn(boba)(bbi)(1/2)vertical bar(n) (2), (bbi = 1,1'-(1,4-butanediyl)-bis(imidazole), H(2)eoba = 4,4'(ethane-1,2-diyldioxy)-dibenzoic acid, H(2)boba = 4,4' -(butane-1,4-diyldioxy)-dibenzoic acid), were obtained by hydrothermal technology and characterized by elemental analysis, infrared spectrum, thermogravimetric analysis and single-crystal X-ray diffraction. 1 is a rare 2D -> 3D example with a 3-fold parallel interpenetration and polycatenaned architecture. 2 features a scarce 2D -> 2D example with a 3-fold parallel interpenetrating network which possesses polyrotaxane and polycatenane characters. Moreover, the luminescent properties of 1 and 2 have been discussed.