Synthesis, structural versatility, luminescent and magnetic properties of a series of coordination polymers constructed from biphenyl-2,4,4′-tricarboxylate and different N-donor ligands

Abstract

Synthesis, structural versatility, luminescent and magnetic properties of a series of coordination polymers constructed from biphenyl-2,4,4′-tricarboxylate and different N-donor ligands †

Exploring 5-fluoronicotinic acid as a versatile building block for the generation of topologically diverse metal–organic and supramolecular Ni, Co, and Cd networks

“…Further linkage of these Ni 2 units via both the m 2 -and m 3 -5-Fnic À moieties furnishes a complex 3D metal-organic framework (Fig. 8,9 In 2, the 5-Fnic À ligands exhibit two different h 1 -and m 2 -coordination modes (Scheme 1, modes III and IV), in which the carboxylate group either shows a h 1 :h 1 bidentate mode or remains uncoordinated. To better understand the structure of this 3D MOF, we carried out its topological analysis using the concept of the simplied underlying net.…”

“…[7][8][9][10][11][12][13] In many cases, the synthesis of coordination compounds is based on self-assembly methods that are highly inuenced by a number of factors, including the nature of metal ions and ligands, type of reaction medium, presence of templates and ancillary ligands, stoichiometry and various reaction conditions. 1-6 Aromatic carboxylate ligands are recognized building blocks in the construction of compounds with high-dimensional networks and interesting properties, not only due to their ability of adapting diverse coordination modes and showing high stability, but also because of potential function as H-bond donors and acceptors.…”

“…1-6 Aromatic carboxylate ligands are recognized building blocks in the construction of compounds with high-dimensional networks and interesting properties, not only due to their ability of adapting diverse coordination modes and showing high stability, but also because of potential function as H-bond donors and acceptors. 8,9,12,14 As a continuation of our research in this eld, 8,9,12 we have tested the hydrothermal self-assembly reactions of various metal(II) nitrates (M ¼ Cd, Co, Ni) with 5-uoronicotinic acid (5-FnicH) as a main building block and 1,10-phenanthroline or 2,2 0 -biimidazole as N,N-donor ancillary ligands in view of the following considerations. 8,9,11 Apart from carboxylate ligands, 1,10-phenanthroline (phen) and 2,2 0 -biimidazole (H 2 biim) have oen been used as secondary N,N-donor building blocks to construct and stabilize new structures, on account of their effective p/p stacking and/or weak H-bonding interactions.…”

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

“…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…”

Coordination polymers of Na(I), Mg(II) and Co(II) ions based on biphenyl-4,4′-diacetic acid: Synthesis, crystal structures and thermal properties

“…Another method of ligand modification is the addition of another carboxylic group COOH into the phenylene ring as it was observed for biphenyl-2,4,4 0 -tricarboxylic acid which shows interesting coordination modes during formation of novel high-dimensional coordination frameworks [37,38]. The alternative way of H 2 bpdc acid modification is introduction of the additional spacers between the carboxylic groups and the phenylene ring which leads to formation of the much more flexible ligand.…”