Synthesis, structures, luminescent and magnetic properties of four coordination polymers with the flexible 1,3-phenylenediacetate ligands

4,4′-(Pyridine-2,5-diyl)dibenzoic acid as a building block for Cd(II) and Mn(II) coordination compounds: Synthesis, structural features and properties

“…1a). The Cd-O bonds range from 2.204(3) to 2.414(3) Å, whereas the Cd-N distances vary from 2.347(4) to 2.377(4) Å, which are comparable to those found in other reported Cd(II) compounds [15,21,22]. The carboxylate groups of L 2À bridge alternately four Cd(II) atoms in a syn-anti coordination mode to produce a tetracadmium(II) double-helicate unit (Fig.…”

“…Many multi-carboxylate or heterocylic carboxylic acids have been designed and used as building blocks for the preparation of functional coordination polymers or MOFs [1,2,6,7,10,[12][13][14][15]. In particular, we and others have reported a diversity of coordination compounds with intriguing architectures and interesting properties based on carboxylic acid building blocks [13][14][15][16][17][18][19][20][21][22][23][24]. As a continuation of our research in this field, we have tested the hydrothermal self-assembly reactions of Cd(II) and…”

“…Various coordination polymers or metal-organic frameworks (MOFs) have shown a multitude of versatile architectures and topological motifs [5][6][7][8], accompanied with desirable properties and potential applications in various fields ranging from luminescence, molecular magnetism and catalysis to selective gas absorption and separation systems [2,[9][10][11][12]. Many multi-carboxylate or heterocylic carboxylic acids have been designed and used as building blocks for the preparation of functional coordination polymers or MOFs [1,2,6,7,10,[12][13][14][15]. In particular, we and others have reported a diversity of coordination compounds with intriguing architectures and interesting properties based on carboxylic acid building blocks [13][14][15][16][17][18][19][20][21][22][23][24].…”

Reversible flexible structural changes in multidimensional MOFs by guest molecules (I2, NH3) and thermal stimulation

“…MOFs have potential applications in catalysis, gas storage and separation, molecular recognition, ion exchange, light, electricity, and magnetism [4][5][6][7][8]. However, most studies use materials with three-dimensional (3D) structures that are stable and rigid.…”

“…[20]. Yin et al found that three MOFs [Cu 6 (pybz) 8 (OH) 2 ] Á I 5 À Á I 7 À , [Cu 6 (pybz) 8 (OH) 2 ](I À ) 2 Á 3.5CH 3 OH, and [Cu 6 (pybz) 8 (OH) 2 ](I À ) 2 Á xI 2 (pybz¼ 4-pyridyl benzoatez), can mutually transform into one another by the release and recovery of I 2 [21]. Zhang et al used ammonia impregnation to modify ZIF-8 samples, which improved their adsorption capacity and selectivity towards CO 2 [22].…”