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crystal structure and fluorescence of a 3D organic-inorganic hybrid coordination network [Cu I (4,4′-bipy)] 4 [ δ -Mo 8 O 26 ] exhibiting an interesting polymorphism, Journal of Coordination Chemistry, 61:6, 891-899, A new three-dimensional (3D) extended solid [Cu I (4,4 0 -bipy)] 4 [-Mo 8 O 26 ] (1) built on {Cu(4,4 0 -bipy)} þ (bipy ¼ bipyridine) and isopolymolybdate anion [-Mo 8 O 26 ] 4À has been synthesized and characterized by elemental analysis, IR, TG, X-ray powder diffraction and single-crystal X-ray diffraction analysis. Compound 1 shows six coppers bonded to [-Mo 8 O 26 ] 4À to form inorganic planes which are linked by 4,4 0 -bipy into a 3D network, the first example of [-Mo 8 O 26 ] 4À six-connected linkage based on an organic-inorganic coordination polymer.A polymorphism of compound 1 was found which has an identical molecular formula but absolutely different structure. The influence of the synthesis conditions of 1 has been studied. Furthermore, the fluorescence of 1 is reported.

In this manuscript, a series of rhodamine–acylhydrazone-based probes bearing a hydroxyphenyl moiety were designed and synthesized for the detection of salicylic acid.