Alkaline Earth Cluster Compounds AE[W6I14] and the Solvate [Ca(C2H6SO)6][W6I14]

Hummel, Thorsten; Mos-Hummel, Agnieszka; Ströbele, Markus; Meyer, H.‐Jürgen

doi:10.1002/zaac.201900057

Cited by 4 publications

(6 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Luminescence studies on compounds with RE =Tb, Eu reveal broad excitation bands between 250 and 450 nm and weak emission intensities centered around 675 nm. The obtained excitation and emission properties are characteristic for octahedral tungsten halide clusters and comparable to other compounds in the literature, revealing strong thermal quenching at room temperature [4b] …”

Section: Discussionsupporting

confidence: 84%

“…SrW 6 I 14 and BaW 6 I 14 show an emission band peaking at 630 nm and 644 nm, respectively. The luminescence spectra were also recorded at 100 K because of thermal quenching [4b] …”

Section: Photoluminescencementioning

confidence: 99%

“…Crystal structures of ternary compounds with the [W 6 I 14 ] 2− cluster have been reported with monovalent cations ( A =Li, Na, K, Rb, Cs, Ag) as A 2 [W 6 I 14 ], [4a,5] and divalent cations ( AE =Mg, Ca, Sr, Ba) as AE [W 6 I 14 ] [4b] …”

Section: Introductionmentioning

confidence: 99%

“…Solid‐state phosphorescence properties of alkali und alkaline earth compounds, A 2 [W 6 I 14 ] and AE [W 6 I 14 ] have been reported. However, their emission intensities were rather weak, explained by the poor transparency of crystalline materials, and significant thermal quenching obtained in photoluminescence studies [4a,b] …”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Crystal structure, Magnetic and Photoluminescence Properties of GdW₆Cl₁₅, TbW₆Cl₁₅, and EuW₆Cl₁₄

Pachel

Ströbele

Enseling

et al. 2021

Zeitschrift anorg allge chemie

Self Cite

View full text Add to dashboard Cite

Ternary compounds with the [M 6 X 14 ] 2À (M=Mo, W; X=Cl, Br, I) cluster have been established with several counter cations. Herein, we report examples of the ternary rare-earth (RE) compounds REW 6 Cl 15 and REW 6 Cl 14 . Preparations of the compounds GdW 6 Cl 15 , TbW 6 Cl 15 and EuW 6 Cl 14 are accomplished by solid-state reactions of W 6 Cl 12 and RECl 3 (RE=Gd, Tb), or EuCl 2 at 575°C in fused silica tubing. GdW 6 Cl 15 and TbW 6 Cl 15 crystallize in the space group C2/c and EuW 6 Cl 14 in Pn � 3, isotypic to BiW 6 Cl 15 (REW 6 Cl 15 ) and PbMo 6 Cl 15 (EuW 6 Cl 14 ) according to X-ray powder diffraction. Crystal structures are discussed in the light of related compounds, and properties such as magnetism and photoluminescence are reported.

show abstract

Section: Discussionsupporting

confidence: 84%

“…SrW 6 I 14 and BaW 6 I 14 show an emission band peaking at 630 nm and 644 nm, respectively. The luminescence spectra were also recorded at 100 K because of thermal quenching [4b] …”

Section: Photoluminescencementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Crystal structure, Magnetic and Photoluminescence Properties of GdW₆Cl₁₅, TbW₆Cl₁₅, and EuW₆Cl₁₄

Pachel

Ströbele

Enseling

et al. 2021

Zeitschrift anorg allge chemie

Self Cite

View full text Add to dashboard Cite

show abstract

“…Metal halide clusters with the octahedral [M 6 X 8 ] cluster core are evidenced by the binary compounds Mo 6 X 12 and W 6 X 12 ( X = Cl, Br, I) . Many compounds with the [W 6 I 14 ] 2– cluster have been developed with alkali as A 2 [W 6 I 14 ], and alkaline earth ions as ( AE )[W 6 I 14 ]. Their counterparts with organic cations like ( n Bu 4 N) +[8] can serve as soluble starting materials for the preparation of ligand substituted cluster compounds with the [W 6 I 8 L 6 ] 2– ion ( L is an inorganic or organic ligand) .…”

Section: Introductionmentioning

confidence: 99%

Synthesis of (TeI₃)₂[W₆I₁₄] via Iodination of WTe₂

et al. 2020

Self Cite

View full text Add to dashboard Cite

The new compound (TeI3)2[W6I14] appeared as an unforeseen product from a reaction of WTe2 with iodine at 250 °C, representing an exceptionally low temperature for the formation of an octahedral tungsten iodide cluster. The crystal structure, as refined by single‐crystal X‐ray diffraction, reveals (TeI3)+ ions and the well‐known [W6I14]2– cluster. A chemical analysis confirms the identity of the product. The electronic structure of (TeI3)2[W6I14] is analyzed in view of the relative position of tellurium states by density functional theory (DFT) calculations. This cluster compound exhibits an indirect band gap as confirmed by the band structure calculation based on the HSE06 hybrid functional theory.

show abstract

Origins of Iodine-Rich W₆I₁₂ Cluster Compounds and the Soluble Compound W₆I₂₂

Ströbele

Meyer

2019

Inorg. Chem.

Self Cite

View full text Add to dashboard Cite

In search of iodine-rich compounds with an octahedral tungsten cluster, we explored the treatment of β-W 6 I 12 , the most stable tungsten iodide cluster compound, with liquid iodine. The most iodine-rich compound obtained from these reactions was W 6 I 22 , whose crystal structure adopts two closely related modifications. The remarkable connectivity of [W 6 I 8 ] 4+ clusters in the structure of W 6 I 22 makes this compound the first example of a soluble binary octahedral tungsten iodide cluster, as demonstrated by dissolution experiments in several solvents. Differential scanning calorimetry showed that the thermolysis of triclinic α-W 6 I 22 proceeds via a phase transformation into monoclinic β-W 6 I 22 , followed by the formation of W 6 I 18 and W 6 I 16 with release of iodine. A corresponding ambientpressure study by combined differential thermal analysis and thermal gravimetry revealed the transformation of β-W 6 I 22 into W 6 I 14 and β-W 6 I 12 , which finally decomposes into the elements. On the basis of this simple example, we demonstrate how a complete reaction sequence, including preparation and subsequent phase transformations, can be monitored and analyzed by thermal scanning methods. Moreover, a reaction cycle is reported that relates a whole series of binary tungsten iodides. Syntheses of the new compounds αand β-W 6 I 22 , and W 6 I 14 are reported, and their crystal structures, as determined by X-ray diffraction techniques, are presented.

show abstract

Alkaline Earth Cluster Compounds AE[W₆I₁₄] and the Solvate [Ca(C₂H₆SO)₆][W₆I₁₄]

Cited by 4 publications

References 39 publications

Crystal structure, Magnetic and Photoluminescence Properties of GdW₆Cl₁₅, TbW₆Cl₁₅, and EuW₆Cl₁₄

Crystal structure, Magnetic and Photoluminescence Properties of GdW₆Cl₁₅, TbW₆Cl₁₅, and EuW₆Cl₁₄

Synthesis of (TeI₃)₂[W₆I₁₄] via Iodination of WTe₂

Origins of Iodine-Rich W₆I₁₂ Cluster Compounds and the Soluble Compound W₆I₂₂

Contact Info

Product

Resources

About

Alkaline Earth Cluster Compounds AE[W6I14] and the Solvate [Ca(C2H6SO)6][W6I14]

Cited by 4 publications

References 39 publications

Crystal structure, Magnetic and Photoluminescence Properties of GdW6Cl15, TbW6Cl15, and EuW6Cl14

Crystal structure, Magnetic and Photoluminescence Properties of GdW6Cl15, TbW6Cl15, and EuW6Cl14

Synthesis of (TeI3)2[W6I14] via Iodination of WTe2

Origins of Iodine-Rich W6I12 Cluster Compounds and the Soluble Compound W6I22

Contact Info

Product

Resources

About

Alkaline Earth Cluster Compounds AE[W₆I₁₄] and the Solvate [Ca(C₂H₆SO)₆][W₆I₁₄]

Crystal structure, Magnetic and Photoluminescence Properties of GdW₆Cl₁₅, TbW₆Cl₁₅, and EuW₆Cl₁₄

Crystal structure, Magnetic and Photoluminescence Properties of GdW₆Cl₁₅, TbW₆Cl₁₅, and EuW₆Cl₁₄

Synthesis of (TeI₃)₂[W₆I₁₄] via Iodination of WTe₂

Origins of Iodine-Rich W₆I₁₂ Cluster Compounds and the Soluble Compound W₆I₂₂