A novel (3,4)-connected Cd(II)-coordination polymer with 3-fold interpenetration assembled from 5-Nitrobenzene-1,2,3-tricarboxylate and flexible 1,6-bis(imidazol-1-yl)-hexane ligands

A novel metal–organic framework, namely [Cd3(NTC)2(bimh)3⋅ 2H2O]⋅ H2O (1) (H3NTC = 5-nitrobenzene-1,2,3-tricarboxylic acid, bimh = 1,6-bis(imidazol-1-yl)-hexane), has been hydrothermally synthesized and characterized by elemental analyses, infrared spectroscopy, and single-crystal X-ray diffraction. Compound 1 presents a three dimensional 3-fold interpenetrated (3,4)-connected framework with the topology symbol of (4 × 6 × 8)(4 × 62 × 83)2(64 × 8 × 10). In addition, the fluorescent property and thermal stability of 1 were discussed.

Graphical abstractA novel coordination polymer features an interesting 3-fold interpenetrated 3D structure and can be described as trinodal (3,4)-connected framework. The fluorescent property of compound 1 indicates that it may be good candidates for blue-light emitting material.Figure optionsDownload full-size imageDownload as PowerPoint slideHighlights► A new 3D coordination polymer with three-fold interpenetration is observed. ► It presents a (3, 4)-connected framework. ► Flexible bis(imidazole) and rigid 5-nitrobenzene-1,2,3-tricarboxylic co-ligands. ► The Fluorescence property and thermal stability were discussed.