A Neutral Heteroleptic Molybdenum Cluster trans-[{Mo6I8}(py)2I4]

Marchuk, Margarita V.; Vorotnikov, Yuri A.; Ivanov, Anton A.; Eltsov, Ilia V.; Kuratieva, Natalia V.; Shestopalov, Michael A.

doi:10.3390/sym14102117

Cited by 10 publications

(5 citation statements)

References 49 publications

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“…Related molybdenum cluster compounds have shown lower stabilities [25] . For example (pyridineH) 0.2 [Mo 6 I 8 (pyridine) 1.8 I 4.2 ] was reported to show a gradual mass loss starting above 100 °C until 350 °C followed by a strong mass loss at 400 °C, corresponding to the formation of [Mo 6 I 12 ] [10b] …”

Section: Resultsmentioning

confidence: 99%

“…However, it is assumed that [Mo 6 Cl 12 (CH 3 CN) 2 ] is an intermediate in the production of the oxygen sensor made from [Mo 6 Cl 12 ] [9] . Recently, luminescence properties of the neutral molybdenum cluster species (PyridineH) 0.2 [Mo 6 I 8 (pyridine) 1.8 I 4.2 ] were reported to show negligible photoluminescence in the solid‐state [10b] …”

Section: Resultsmentioning

confidence: 99%

“…However, investigations regarding the luminescence of neutral and cationic cluster species are scarce, even though first examples were reported decades ago [14] . To the best of our knowledge, only a few compounds have known crystal structures and have been characterized in regard to their photophysical properties [5,10b,15] …”

Section: Introductionmentioning

confidence: 99%

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The Remarkably Robust, Photoactive Tungsten Iodide Cluster [W₆I₁₂(NCC₆H₅)₂]

et al. 2023

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The new heteroleptic tungsten iodide cluster compound [W 6 I 12 (NCC 6 H 5 ) 2 ] is presented. The synthesis is carried-out from Cs 2 W 6 I 14 and ZnI 2 under solvothermal conditions in benzonitrile solution, yielding red cube-shaped crystals. [W 6 I 12 (NCC 6 H 5 ) 2 ] represents a heteroleptic [W 6 I 8 ]-type cluster bearing four apical iodides and two benzonitrile ligands. Molecular [W 6 I 12 (NCC 6 H 5 ) 2 ] clusters form a robust hydrogen bridged crystal structure with high thermal stability and high resistibility against hydrolysis. The electronic structure is analyzed by quantum chemical methods of the calculated electron localization function (ELF) and the band structure. Photoluminescence measurements are performed to verify and describe the photophysical properties of [W 6 I 12 (NCC 6 H 5 ) 2 ]. Finally, the photocatalytic properties of [W 6 I 12 (NCC 6 H 5 ) 2 ] are evaluated as a proof-of-concept.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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The Remarkably Robust, Photoactive Tungsten Iodide Cluster [W₆I₁₂(NCC₆H₅)₂]

et al. 2023

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“…However, due to the fact that this field is very young, the number of biomedically-oriented studies is still limited. Apical ligands strongly influence the properties of these compounds, and the relative ease of their substitution allows, to some extent, to vary or enhance the desired properties [217][218][219][220]. Clusters have a wide range of functional (i.e., having potential applications) properties, but papers demonstrating practical applications of these compounds have only been published in the last 10-15 years.…”

Section: Octahedral Metal Cluster Complexesmentioning

confidence: 99%

Silica-Based Materials Containing Inorganic Red/NIR Emitters and Their Application in Biomedicine

Vorotnikov,

Vorotnikova,

Shestopalov

2023

Materials

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The low absorption of biological substances and living tissues in the red/near-infrared region (therapeutic window) makes luminophores emitting in the range of ~650–1350 nm favorable for in vitro and in vivo imaging. In contrast to commonly used organic dyes, inorganic red/NIR emitters, including ruthenium complexes, quantum dots, lanthanide compounds, and octahedral cluster complexes of molybdenum and tungsten, not only exhibit excellent emission in the desired region but also possess additional functional properties, such as photosensitization of the singlet oxygen generation process, upconversion luminescence, photoactivated effects, and so on. However, despite their outstanding functional applicability, they share the same drawback—instability in aqueous media under physiological conditions, especially without additional modifications. One of the most effective and thus widely used types of modification is incorporation into silica, which is (1) easy to obtain, (2) biocompatible, and (3) non-toxic. In addition, the variety of morphological characteristics, along with simple surface modification, provides room for creativity in the development of various multifunctional diagnostic/therapeutic platforms. In this review, we have highlighted biomedical applications of silica-based materials containing red/NIR-emitting compounds.

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“…In general, the aforementioned investigations of the photophysical properties of tungsten and molybdenum halide clusters have been carried out on anionic species ([M 6 X 8 L 6 ] 2− ). While neutral and cationic clusters are reported to exist with various different solvents as ligands, 16 only a few crystal structures 17 are reported, and for only three compounds, namely [M 6 I 8 (DMSO) 6 ](NO 3 ) 4 (M = Mo, W) and [Mo 6 I 8 (pyridine) 2 ]I 4 have the luminescence properties been studied. 17 b , d Therefore, our aim was to synthesize new cationic tungsten halide clusters and characterize their photoluminescence properties.…”

Section: Introductionmentioning

confidence: 99%