K10M4M′4S17 (M = Mn, Fe, Co, Zn; M′ = Sn, Ge) and Cs10Cd4Sn4S17: Compounds with a Discrete Supertetrahedral Cluster

Palchik, O.; Iyer, Ratnasabapathy G.; Canlas, Christian G.; Weliky, David P.; Kanatzidis, Mercouri G.

doi:10.1002/zaac.200400154

Cited by 54 publications

(31 citation statements)

References 32 publications

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“…10) The bcc lattice is realized in Co4B6O13, 11) helvine, 12) and danalite, 13) and the pc lattice is realized in pharmacosiderite 14) and K10M4Sn4S17 (M = Mn 2+ , Fe 2+ , Co 2+ ). 15) However, the details of their magnetic properties have not yet been known. We focus on pharmacosiderite.…”

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confidence: 99%

Frustrated Magnetism of Pharmacosiderite Comprising Tetrahedral Clusters Arranged in the Primitive Cubic Lattice

et al. 2018

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We show that pharmacosiderite is a novel cluster antiferromagnet comprising frustrated regular tetrahedra made of spin-5/2 Fe 3+ ions that are arranged in the primitive cubic lattice. The connectivity of the tetrahedra and the inter-cluster interaction of 2.9 K, which is significantly large compared with the intra-cluster interaction of 10.6 K, gives a unique playground for frustration physics. An unconventional antiferromagnetic order is observed below TN ~ 6 K, which is accompanied by a weak ferromagnetic moment and a large fluctuation as evidenced by Mössbauer spectroscopy. A q = 0 magnetic order with the total S = 0 for the tetrahedral cluster is proposed based on the irreducible representation analysis, which may explain the origin of the weak ferromagnetism and fluctuation.

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confidence: 99%

Frustrated Magnetism of Pharmacosiderite Comprising Tetrahedral Clusters Arranged in the Primitive Cubic Lattice

et al. 2018

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“…The [Zn 3.5 Sn 3.5 S 13 ] n 5 n – framework shows some differences in comparison with those of other Zn–Sn–Q (Q = S, Se) compounds, such as K 6 Sn[Zn 4 Sn 4 S 17 ], , and [(Me) 2 NH 2 ] 2 ZnSn 3 Se 8 . The K 6 Sn[Zn 4 Sn 4 S 17 ] features a robust open framework based on Sn 4+ -linked P1 clusters of {Zn 4 Sn 4 S 17 }, while the [(Me) 2 NH 2 ] 2 ZnSn 3 Se 8 possesses Zn–Sn–Se layers constructed by the interconnection of T2 clusters of {ZnSn 3 Se 10 }. The cluster building blocks for both compounds exhibit tetrahedral topology and connect with the adjacent units through four terminal Q atoms.…”

Section: Results and Discussionmentioning

confidence: 99%

Effective and Rapid Adsorption of Sr²⁺ Ions by a Hydrated Pentasodium Cluster Templated Zinc Thiostannate

et al. 2019

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Separation of 90Sr from radioactive wastewater not only is essential for human public health and environmental remediation but also bears importance for alternate medical and industrial applications. Here, we report the facile synthesis of an open framework zinc thiostannate, Na5Zn3.5Sn3.5S13·6H2O (ZnSnS-1), templated by hydrated pentasodium clusters. This compound exhibits an effective and rapid ion exchange property for Sr2+ ions. The exchange kinetics conforms to a pseudo-second-order model, implying that the chemical adsorption of Sr2+ may be the rate-determining step. According to the Langmuir–Freundlich isotherm, the maximum exchange capacity of ZnSnS-1 for Sr2+ is 124.2 mg/g and ranks ahead of those of all the reported metal sulfide Sr2+ adsorbents. High exchange performance is observed over the broad pH range 2.5–13, although it could be inhibited to some extent by coexisting ions, especially Na+ and Ca2+. ZnSnS-1 shows a higher affinity for Sr2+ compared to Cs+, and the performance is almost unaffected by the presence of coexisting Cs+ even in excess amounts. Importantly, the Sr2+ in the exchanged product can be conveniently eluted by a concentrated KCl solution, and the recycled exchanger can be further used for Sr2+ exchange. These advantages combined with the robust framework for recycling concerns make ZnSnS-1 a highly promising exchanger for removal of radioactive Sr from the liquid nuclear waste.

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“…Therefore, we explore new IB materials based on the Cd−Sn‐ Q system. To date, many Cd−Sn‐based chalcogenides have been reported, including the A 2 CdSnS 4 (A=Li, Na, K; E g > 1.52 eV), Na 6 CdSn 4 S 12 , Cs 10 Cd 4 Sn 4 S 17 ( E g =3.16 eV), BaCdSnS 4 ( E g =2.3 eV), Ba 3 CdSn 2 S 8 ( E g =2.75 eV), K 6 Cd 4 Sn 3 Se 13 ( E g =2.33 eV), K 2 CdSnSe 4 ( E g =1.7 eV), and Tl 2 CdSnTe 4 ( E g =0.06 eV) . Among these compounds, the sulfides have large band gaps which are not suitable for solar absorbers.…”

Section: Introductionmentioning

confidence: 99%

An Intermediate Band Material K₂CdSnSe₄ and Its Visible‐Light Photocatalytic Activity

Sun

Song

et al. 2017

ChemistrySelect

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Intermediate bands (IBs) can significantly extend the absorption range of solar absorbers. Here, an intermediate band material K 2 CdSnSe 4 was synthesized via a urea flux method at 220 8C. The structure features [CdSnSe 4 ] 2one-dimensional chains, which were built up by [CdSe 4 ] 6and [SnSe 4 ] 4tetrahedra via edge sharing. Optical measurements indicate that the assynthesized K 2 CdSnSe 4 compound has typical multi-absorption characters with an absorption edge at 1.63 eV and an absorption peak around 398 nm (3.1 eV). First-principles calcu-lation results, which are perfectly consistent with the experimental results, show that the intermediate bands mainly consist of Sn-5 s and Se-4p orbitals. Photoresponse was observed under visible light illumination with a photocurrent density of 217 mA·cm À2 at 1 V. Methyl orange (MO) was used as model pollutant for photodegradation test. About 99 % of MO (10 mg·L À1 ) was removed after 4 h under visible light illumination using K 2 CdSnSe 4 powder (1 g·L À1 ) as photocatalyst, which is better than that of C 3 N 4 (~45 % at 240 min).

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K₁₀M₄M′₄S₁₇ (M = Mn, Fe, Co, Zn; M′ = Sn, Ge) and Cs₁₀Cd₄Sn₄S₁₇: Compounds with a Discrete Supertetrahedral Cluster

Cited by 54 publications

References 32 publications

Frustrated Magnetism of Pharmacosiderite Comprising Tetrahedral Clusters Arranged in the Primitive Cubic Lattice

Frustrated Magnetism of Pharmacosiderite Comprising Tetrahedral Clusters Arranged in the Primitive Cubic Lattice

Effective and Rapid Adsorption of Sr²⁺ Ions by a Hydrated Pentasodium Cluster Templated Zinc Thiostannate

An Intermediate Band Material K₂CdSnSe₄ and Its Visible‐Light Photocatalytic Activity

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K10M4M′4S17 (M = Mn, Fe, Co, Zn; M′ = Sn, Ge) and Cs10Cd4Sn4S17: Compounds with a Discrete Supertetrahedral Cluster

Cited by 54 publications

References 32 publications

Frustrated Magnetism of Pharmacosiderite Comprising Tetrahedral Clusters Arranged in the Primitive Cubic Lattice

Frustrated Magnetism of Pharmacosiderite Comprising Tetrahedral Clusters Arranged in the Primitive Cubic Lattice

Effective and Rapid Adsorption of Sr2+ Ions by a Hydrated Pentasodium Cluster Templated Zinc Thiostannate

An Intermediate Band Material K2CdSnSe4 and Its Visible‐Light Photocatalytic Activity

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K₁₀M₄M′₄S₁₇ (M = Mn, Fe, Co, Zn; M′ = Sn, Ge) and Cs₁₀Cd₄Sn₄S₁₇: Compounds with a Discrete Supertetrahedral Cluster

Effective and Rapid Adsorption of Sr²⁺ Ions by a Hydrated Pentasodium Cluster Templated Zinc Thiostannate

An Intermediate Band Material K₂CdSnSe₄ and Its Visible‐Light Photocatalytic Activity