A series of polythreaded architectures based on a long flexible tetracarboxylate ligand and different N-donor ligands

Synthesis, Crystal Structure, and Luminescent Properties of Novel Zinc Metal–Organic Frameworks Based on 1,3-Bis(1,2,4-triazol-1-yl)propane

“…Bis­(azol-1-yl)­alkanes are neutral nitrogen ligands that are often used to prepare coordination polymers. − Bis­(1,2,4-triazol-1-yl)­alkanes are probably the most widely used among other similar azole derivatives. The system of zinc–carboxylic acid–bis­(1,2,4-triazol-1-yl)­alkane coligand has been explored by several authors; however, in most cases only one-dimensional (1D), 2D, or interpenetrated 3D structures have been prepared, − which prevented the studies of their sorption properties.…”

Six Co(II) Coordination Polymers Based on Two Isomeric Semirigid Ether-Linked Aromatic Tetracarboxylate Acid: Syntheses, Structural Comparison, and Magnetic Properties

“…On the basis of the structural analysis, the antiferromagnetic interaction for 4 mainly arises from the significant orbital angular momentum contributions from the local 4 T 1g ground term of the distorted octahedral Co(II) ions. 48,49 While for 6, because the binuclear clusters are interconnected by a large L ligand, it should mainly arise from the magnetic exchange coupling within the binuclear Co(II) cluster. 50 The χ M −1 −T plots well followed the Curie−Weiss law with C = 1.94 cm 3 K mol −1 and θ = −5.05 K for 4, and C = 2.48 cm 3 K mol −1 and θ = −4.71 K for 6.…”

Synthesis, Crystal Structure, and Luminescent Properties of New Zinc(II) and Cadmium(II) Metal-Organic Frameworks Based on Flexible Bis(imidazol-1-yl)alkane Ligands

“…Among these ligands, bis(azol-1-yl)alkanes [19,20]. Recently, several papers reporting the use of bis(imidazol-1-yl) or bis(1,2,4-triazol-1-yl) derivatives for building of coordination polymers with extended networks appeared [21][22][23][24][25][26][27][28][29][30][31][32]. In this contribution we report the synthesis of four new MOFs based on zinc(II) or cadmium(II) ions, terephthalic acid (H2bdc), and flexible ligands with longer polymethylene linkers, namely 1,5-bis(imidazol-1-yl)pentane (C5) or 1,6-bis(imidazol-1-yl)hexane (C6), synthesized by an improved procedure, which is also described here.…”