5,5′‐(1,4‐Dioxo‐1,2,3,4‐tetrahydrophthalazine‐6,7‐diyl)bis(oxy)diisophthalate‐Based Coordination Polymers and their TNP Sensing Ability

Abstract

The simple hydrothermal self-assembly of metal ions, 5,5′-(4,5-dicarboxy-1,2-phenylene)bis(oxy)diisophthalic acid (L1 ' ), and N 2 H 4 ·H 2 O at pH = 8 (adjusted by oxalic acid) created two new acylhydrazinetetracarboxylate-extended 3-D Sr 2+ and Ba 2+ coordination polymers [Sr 2 (HL1)(H 2 O)] (H 5 L1 = 5,5′-(1,4-dioxo-1,2,3,4-tetrahydrophthalazine-6,7-diyl)bis(oxy)diisophthalic acid) 1 and [Ba 5 (HL1) 2 (ox)(H 2 O) 2 ]·6H 2 O·N 2 H 4 (ox = oxalate) 2. H 5 L1 originated from the in situ acylation of L1′ with N 2 H 4 . X-ray single-crystal diffraction analysis reveals that (i) the 3-D network of 1 is based on a rod-like secondary building unit [a]

Luminescent lanthanide complexes based on 4,5-di(3,5-dicarboxylphenoxy)phthalic acid as enhanced fluorescence probes for highly selective detection of lead(ii) ions in water

“…Aromatic polycarboxylic acid ligands including ether bonds appear particularly attractive: these flexible σ bonds can reduce steric hindrance by free rotation and maximizing the coordination requirements of metal ions. [30][31][32][33][34][35][36] Moreover, the ether bonds may interact with metal ions as additional Lewis basic sites to achieve the identification of metal ions with precision. [37][38][39][40][41] Herein, we report six two-dimensional (2D) and structurally novel complexes 1-6 ([Nd 2 (L)(H 2 O) 6 ] n •4.58n(H 2 O) (1), [Ln(H 3 L)(H 2 O)] n •0.5n(H 2 O), Ln = Sm (2), Eu (3), Gd (4), Tb (5), Eu 0.18 Gd 0.62 Tb 0.20 (6)), which are constructed by the aromatic polycarboxylic acid ligand 4,5-di (3,5-dicarboxylphenoxy) phthalic acid (H 6 L, shown in Scheme S1 †) featuring ether bonds.…”

Current Design of Mixed-Ligand Complexes of Magnesium(II): Synthesis, Crystal Structure, Thermal Properties and Biological Activity against Mycolicibacterium Smegmatis and Bacillus Kochii

“…The chemistry of alkaline-earth metal complexes is among the actively developing areas of coordination chemistry [1][2][3][4][5][6][7][8][9]. However, complexation with Mg 2+ ions often demonstrates quite different binding schemes than the corresponding compounds of IIA metals [10][11][12][13].…”

Binuclear Complexes of Cu(II) and Mg(II) with 2-Furancarboxylic Acid: Synthesis, Structure, EPR Spectroscopy, and Results of In Vitro Biological Activity against Mycolicibacterium Smegmatis and SCOV3

“…[14,15]. However, complex formation with Mg 2+ ions often exhibits completely different binding schemes than the corresponding compounds of IIA-group metals [16][17][18][19][20][21][22][23][24][25][26]. This effect is primarily caused by differences in the charge-to-ionic radius ratio (0.801 for Mg 2+ , 0.987 for Ca 2+ , 1.076 for Sr 2+ , and 1.118 for Ba 2+ [27]).…”