Syntheses, supramolecular structures, magnetic and photochromic properties of six lanthanide complexes based on the 5-azotetrazolyl salicylic acid ligand

Chen, Wenbin; Li, Zhixin; Ouyang, Zhi-Jian; Lin, Wen-Ning; Liu, Yang; Dong, Wen

doi:10.1039/c4ra09951f

Cited by 19 publications

(15 citation statements)

References 70 publications

(2 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Thus, the concept of functionalization of organic ligands with noncovalent bond donor or acceptor sites is a promising strategy for obtaining functional materials based on lanthanide complexes. There are already many examples of lanthanide complexes having intraand intermolecular noncovalent interactions, and in this minireview we have illustrated cases that show an important role of these weak forces in supramolecular aggregation [174,175] or polymerization, [62,134,135,172,175] stabilization of divalent Ln compounds, [58] MOFs, [51,107] E/Z!E isomerization, [57] chemical sensing, [166] catalysis, [175] etc.…”

Section: Discussionmentioning

confidence: 81%

“…For instance, the molecular conformation of an europium complex (5) is found to be stabilized through intermolecular lone pair-π (3.194 Å) and π-π (3.371 Å) interactions, and the cooperative action of these noncovalent interactions lead to a 1D chain (Scheme 2a). [62] Moreover, the [Eu(NO 3 ) 5 ] 2À anion is encapsulated by two triazine ligands in 6 via ionic interactions as well as anion-π interactions between O-anions of coordinated nitrates and the triazine π-system, with distances of 2.736 and 2.751 Å (Scheme 2b). [63] Noncovalent interactions in lanthanide complexes are not limited to the involvement of the secondary coordination sphere of this class of compounds, but the central Ln atom may also participate in intermolecular interactions leading to a ''rareearth'' bond or interaction.…”

Section: Chemistry-a European Journalmentioning

confidence: 99%

“…Moreover, due to their recent experimen-Scheme 2. Lone pair-π, [62] π-π [62] and anion-π [63] interactions in europium complexes.…”

Section: Chemistry-a European Journalmentioning

confidence: 99%

“…Like the cation-π interactions, the lone pair-π, π-π and anion-π interactions are also emergent noncovalent interactions whose occurrence has already been recognized in the coordination chemistry of lanthanides. [62][63][64][65][66] Scheme 1. Hydrogen, [57] halogen [59] and chalcogen [60] bonds, as well as cation-π interactions, [58] in lanthanide complexes.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Noncovalent Interactions at Lanthanide Complexes

Mahmudov

Huseynov

Aliyeva

et al. 2021

Chemistry A European J

View full text Add to dashboard Cite

Lanthanide complexes have attracted a widespread attention due to their structural diversity, as well as multifunctional and tunable properties. The development of lanthanide based functional materials has often relied on the design of the secondary coordination sphere of the corresponding lanthanide complexes. For instance, usually simple lanthanide salts (solvento complexes) do not catalyze effectively organic reactions or provide low yield of the expected product, whereas the presence of a suitable organic ligand with a noncovalent bond donor or acceptor centre (secondary coordination sphere) modifies the symmetry around the metal centre in lanthanide complexes which then successfully can act as catalysts in both homogenous and heterogenous catalysis. In this minireview, we discuss several relevant examples, based on X‐ray crystal structure analyses, in which the hydrogen, halogen, chalcogen, pnictogen, tetrel and rare‐earth bonds, as well as cation‐π, anion‐π, lone pair‐π, π–π and pancake interactions, are used as a synthon in the decoration of the secondary coordination sphere of lanthanide complexes.

show abstract

Section: Discussionmentioning

confidence: 81%

Section: Chemistry-a European Journalmentioning

confidence: 99%

“…Moreover, due to their recent experimen-Scheme 2. Lone pair-π, [62] π-π [62] and anion-π [63] interactions in europium complexes.…”

Section: Chemistry-a European Journalmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Noncovalent Interactions at Lanthanide Complexes

Mahmudov

Huseynov

Aliyeva

et al. 2021

Chemistry A European J

View full text Add to dashboard Cite

show abstract

“…Lanthanide-tetrazolate complexes have also become more of interest in the literature recently, [191][192][193][194][195][196][197][198][199][200][201] with most of the research focusing on luminescent properties of the 4f tetrazolates. [191][192][193][194][197][198][199] They have also been studied for their ability to behave as single-molecule magnets, due to their strong spin-orbit coupling ability. 196 Very few organometallic lanthanide-tetrazolate complexes have been published, 200,201 and there are no current examples of cerium-tetrazolates.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Actinide Materials for the Study of Basic Actinide Science and Rapid Separation of Fission Products

Dorhout

2017

View full text Add to dashboard Cite

This dissertation covers several distinct projects relating to the fields of nuclear forensics and basic actinide science. Post-detonation nuclear forensics, in particular, the study of fission products resulting from a nuclear device to determine device attributes and information, often depends on the comparison of fission products to a library of known ratios. The expansion of this library is imperative as technology advances. Rapid separation of fission products from a target material, without the need to dissolve the target, is an important technique to develop to improve the library and provide a means to develop samples and standards for testing separations. Several materials were studied as a proof-of-concept that fission products can be extracted from a solid target, including microparticulate (< 10 µm diameter) dUO2, porous metal organic frameworks (MOFs) synthesized from depleted uranium (dU), and other organicbased frameworks containing dU. The targets were irradiated with fast neutrons from one of two different neutron sources, contacted with dilute acids to facilitate the separation of fission products, and analyzed via gamma spectroscopy for separation yields. The results indicate that smaller particle sizes of dUO2 in contact with the secondary matrix KBr yield higher separation yields than particles without a secondary matrix. It was also discovered that using 0.1 M HNO3 as a contact acid leads to the dissolution of the target material. Lower concentrations of acid were used for future experiments. In the case of the MOFs, a larger pore size in the framework leads to higher separation yields when contacted with 0.01 M HNO3. Different types of frameworks also yield different results. The second portion of this dissertation describes efforts to better understand electronic structure and bonding of the actinide metals in various environments. One project involved studying thorium and uranium bonding with the soft-donor chalcogenides, specifically sulfur. Results from these studies include the synthesis and characterization of the novel (C5Me5)2Th(SMe)2 complex; the synthesis of (C5Me5)2ThS5 by myriad routes, indicating the product is a thermodynamic sink; and evidence that sulfur is inserted iv into the thorium-carbon bond of (C5Me5)2ThMe2 to form the pentasulfide. The second project involved unique activation of the strong carbon-halide bonds present in benzyl-halides mediated by a uranium-(2,2'-bipyridine) complex. The resultant products include a series of uranium-halide bonds from fluoride to iodide, and the addition of the benzyl group to the bipyridine ring. Studies of the mechanism indicate that the benzyl group is added first to the 6 position of the ring before migrating to its final place at the 4 position. The final project utilized a novel gold-tetrazolate complex that can be tailored to add highnitrogen ligands to actinides in a facile and safe way. This transfer ligand was used to synthesize new uranium-tetrazolate species. A brief exploration into using the transfer ligand to add tetra...

show abstract

Light‐Switchable Metal Complexes: Introducing Photoresponsive Behaviour Through Azoheteroarenes

et al. 2023

View full text Add to dashboard Cite

Azoheteroarenes are emerging classes of photoswitches with versatile scaffolds that offer distinct features such as efficient photoisomerization, tunable stability of the photoswitched states, and bidirectional photoswitching. Moreover, the heteroatoms of such photoswitches exhibit coordination ability to bind to the metal centers. The resulting azoheteroarene‐based metal complexes can be designed and developed to tune various metal‐based properties towards intriguing applications such as in optics, magnetic properties, data storage applications, and catalysis. Despite the diverse utility of azopyridines in such contexts, other azoheteroarenes, particularly the state‐of‐the‐art five‐membered heterocycle‐based photoswitches, remain under‐explored. In this Review, we describe the diverse classes of azoheteroarene‐coordinated metal complexes reported in the literature and survey their photoswitching behaviour and applications. Furthermore, we identify potential azoheteroarene candidates for building photochrome‐coupled metal complexes and supramolecular architectures for maximizing the photo‐tuning of metal‐related properties.

show abstract

Syntheses, supramolecular structures, magnetic and photochromic properties of six lanthanide complexes based on the 5-azotetrazolyl salicylic acid ligand

Abstract: Six lanthanide complexes based on 5-azotetrazolyl salicylic acid were synthesized and their crystal structures, magnetic and photochromic properties were reported.

Cited by 19 publications

References 70 publications

Noncovalent Interactions at Lanthanide Complexes

Noncovalent Interactions at Lanthanide Complexes

Synthesis of Actinide Materials for the Study of Basic Actinide Science and Rapid Separation of Fission Products

Light‐Switchable Metal Complexes: Introducing Photoresponsive Behaviour Through Azoheteroarenes

Contact Info

Product

Resources

About