Structural and Chemical Features  of Chalcogenides of Early Transition Metals

Artemkina, S. B.; Grayfer, Ekaterina D.; Ivanova, Mariia N.; Ledneva, A. Yu.; Poltarak, A. A.; Poltarak, Pavel A.; Yarovoi, S. S.; Kozlova, S. G.; Федоров, В. Е.

doi:10.1134/s002247662207006x

Cited by 5 publications

(1 citation statement)

References 139 publications

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“…To date, a large number of compounds in the M-Q-Hal-(O) systems were obtained for niobium, tantalum, molybdenum, tungsten and rhenium [22][23][24][25], while those for titanium, zirconium, hafnium and vanadium are much less known. However, for any of the systems, a thorough and exhaustive search of possible phases is crucial both for understanding of the fundamental chemistry of the elements [26,27] and for development of novel, "greener" and "smarter" materials [28,29]. The completion of the ideas about the phase diversity is expected to serve as a reliable foundation for the development of the computational chemistry of transition elements in complex oxidation states [30,31], and the analysis of specific intermolecular interactions [32].…”

Section: Introductionmentioning

confidence: 99%

2d, or Not 2d: An Almost Perfect Mock of Symmetry

2023

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The paper is related to an interesting case of revision of X-ray crystal structure with a lack of experimental data. Complexes V4OSe8I6·X (X = I2 or 3,5-dimethylpyrazole) with O-centered complex molecules [V4O(μ-Se2)4I4(μ-I)2] were synthesized in our group. In the further search for new relative compounds in the V-Se-I-O system, we obtained several crystals with different structures, including “V4OSe6I3”, with incredibly complicated connectivity of {V4O(Se2)4I6} units bridged via both diselenide and iodide ligands. Due to the absence of phase-pure products and the possible instability of some of the phases under ambient conditions, we were mainly guided by the single-crystal X-ray diffraction data. However, seeing a very complex coordination mode in the “V4OSe6I3” structure, we have carefully analyzed the structure from the positions of symmetry and chemical synthesis in this system. The “new structure” was recognized as the complex superposition of the structure of another compound with composition “V4OSe6I10” just found in the same experiment. We outlined the course of observations, reasoning and solutions to the symmetry false estimation problem, which we believe to be of interest to readers dealing with X-ray diffraction analysis.

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Section: Introductionmentioning

confidence: 99%

2d, or Not 2d: An Almost Perfect Mock of Symmetry

2023

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Heterostructured transition metal chalcogenides photocatalysts for organic contaminants degradation

Sharma,

Kaur,

Garg

et al. 2024

Metal-Chalcogenide Nanocomposites

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Replenishment in the Family of Rhenium Chalcobromides; Synthesis and Structure of Molecular {Re₄S₄}Br₈(TeBr₂)₄, Dimeric [{Re₄S₄}Br₈(TeBr₂)₃]₂, and Polymeric {Re₄S₄}Br₈ Compounds Based on the {Re₄S₄}⁸⁺ Tetrahedral Cluster Core

et al. 2022

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We have obtained three new rhenium(IV) chalcobromides belonging to the homologous series {Re 4 S 4 }Br 8 (TeBr 2 ) n (n = 0, 3, 4): a molecular complex {Re 4 S 4 }Br 8 (TeBr 2 ) 4 (1), a dimeric complex [{Re 4 S 4 }(TeBr 2 ) 3 Br 7 (μ-Br)] 2 (2), and a twodimensional (2D) polymeric compound {Re 4 S 4 }Br 8 (3). Compound 1 is isotypic to the already known {Re 4 Te 4 }(TeBr 2 ) 4 Br 8 , while 2 and 3 exhibit a new type of binding of tetrahedral clusters via μ-Br bridges. Compounds were characterized by X-ray single-crystal diffraction, X-ray powder diffraction, and thermal and elemental analyses. In compound 2, two tetrahedral cluster cores {Re 4 S 4 } 8+ are linked together forming a dimer through two Re−μ-Br−Re bridges. Calculations of the electron localization function (ELF) showed that there is no covalent interaction between rhenium atoms of neighboring clusters. In compound 3, each rhenium atom of the {Re 4 S 4 } 8+ core is coordinated by three Br ligands: one terminal Br and two bridging μ-Br ligands. As a result, eight bridging bromine atoms link {Re 4 S 4 } 8+ cluster cores into goffered layers. {Re 4 S 4 }Br 8 is the new stable rhenium(IV) thiobromide, the first discovered in the Re−S−Br system, along with the already known octahedral rhenium(III) thiobromides Re 6 S 4+x Br 10−2x (x = 0−4).

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Structural and Chemical Features of Chalcogenides of Early Transition Metals

Cited by 5 publications

References 139 publications

2d, or Not 2d: An Almost Perfect Mock of Symmetry

2d, or Not 2d: An Almost Perfect Mock of Symmetry

Heterostructured transition metal chalcogenides photocatalysts for organic contaminants degradation

Replenishment in the Family of Rhenium Chalcobromides; Synthesis and Structure of Molecular {Re₄S₄}Br₈(TeBr₂)₄, Dimeric [{Re₄S₄}Br₈(TeBr₂)₃]₂, and Polymeric {Re₄S₄}Br₈ Compounds Based on the {Re₄S₄}⁸⁺ Tetrahedral Cluster Core

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Structural and Chemical Features of Chalcogenides of Early Transition Metals

Cited by 5 publications

References 139 publications

2d, or Not 2d: An Almost Perfect Mock of Symmetry

2d, or Not 2d: An Almost Perfect Mock of Symmetry

Heterostructured transition metal chalcogenides photocatalysts for organic contaminants degradation

Replenishment in the Family of Rhenium Chalcobromides; Synthesis and Structure of Molecular {Re4S4}Br8(TeBr2)4, Dimeric [{Re4S4}Br8(TeBr2)3]2, and Polymeric {Re4S4}Br8 Compounds Based on the {Re4S4}8+ Tetrahedral Cluster Core

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Replenishment in the Family of Rhenium Chalcobromides; Synthesis and Structure of Molecular {Re₄S₄}Br₈(TeBr₂)₄, Dimeric [{Re₄S₄}Br₈(TeBr₂)₃]₂, and Polymeric {Re₄S₄}Br₈ Compounds Based on the {Re₄S₄}⁸⁺ Tetrahedral Cluster Core