Kx(C2H8N2)yFe2−zS2: synthesis, phase structure and correlation between K+ intercalation and Fe depletion

Guo, Zhongnan; Zhen, Liang; Jin, Shifeng; Han, Bingling; Sun, Fan; Yuan, Wenxia

doi:10.1039/c7ra01720k

Cited by 10 publications

(4 citation statements)

References 36 publications

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“…This unit cell dimensions are in close agreement with literature reports on alkali metal and alkali metal-free ethylenediamine intercalated FeS. 14,15,24,59 There is one impurity peak seen in the PXRD due to excess Fe powder remaining from the in situ growth of FeS layers. To avoid excess Fe, we attempted syntheses using pre-reacted tetragonal FeS at 120 °C over 2–6 days, but were unsuccessful.…”

Section: Resultssupporting

confidence: 90%

Twisting two-dimensional iron sulfide layers into coincident site superlattices via intercalation chemistry

Balisetty,

Wilfong,

Zhou

et al. 2024

Chem. Sci.

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Section: Resultssupporting

confidence: 90%

Twisting two-dimensional iron sulfide layers into coincident site superlattices via intercalation chemistry

Balisetty,

Wilfong,

Zhou

et al. 2024

Chem. Sci.

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“…The composition was measured by EDS, and the result was determined to be Cs 0.9(1) Ni 3.3(1) Se 3 (see Figure S3), which is consistent with the nonstoichiometric feature from the synthesis. It is worth noting that, as far as we know, Cs 0.9 Ni 3.1 Se 3 is the first nonstoichiometric compound in the TlFe 3 Te 3 -type family, although nonstoichiometry is common in quasi-2D TMX systems. , It has been demonstrated that a certain extent of deviation from the stoichiometry is required for phase stabilization in some 2D-layered structures. , In Cs 0.9 Ni 3.1 Se 3 , the extra Ni atom may play the same role in stabilizing the structure. On the other hand, Neilson et al reported that, by deintercalating K in the ThCr 2 Si 2 -type KNi 2 Se 2 , the structure switched to the NiAs type with face-sharing NiSe 6 octahedra .…”

Section: Resultsmentioning

confidence: 99%

Cs_0.9Ni_3.1Se₃: A Ni-Based Quasi-One-Dimensional Conductor with Spin-Glass Behavior

et al. 2018

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In this work, we report the discovery of a new Ni-based quasi-one-dimensional selenide: CsNiSe. This compound adopts the TlFeTe-type structure with space group P6/ m, which consists of infinite [NiSe] chains with face-sharing Ni octahedra along the c direction. The lattice parameters are calculated as a = 9.26301(4) Å and c = 4.34272(2) Å, with the Ni-Ni distance in the ab plane as 2.582(3) Å, suggesting the formation of a Ni-Ni metallic bond in this compound. Interestingly, it has been found that CsNiSe is nonstoichiometric, which is different from the other TlFeTe-type phases reported so far. Structure refinement shows that the extra Ni atom in the structure may occupy the 2c site, together with Cs atoms. CsNiSe shows metallic behavior with monotonously decreased resistivity with temperatures from 300 to 0.5 K. Measurements on the magnetic susceptibility display a spin-glass state below 7 K. The specific heat curve gives a Sommerfeld coefficient of 14.6 mJ·K·mol and a Debye temperature of 143.6 K. The discovery of this new compound enriches the diversity of low-dimensional materials in a transition-metal-based family and also sheds light on the structure-property relationship of this system.

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“…92,133,136,137 Similar to FeSe, FeS can also act as a host for guest species such as alkali cations with nonaqueous solvents. Guo et al 138 recently intercalated FeS with K + in EDA. Unlike the its Se analogues, however, the EDA-intercalated sulfide is not superconducting.…”

Section: ■ Intercalation Chemistrymentioning

confidence: 99%

Tetrahedral Transition Metal Chalcogenides as Functional Inorganic Materials

Zhou

Rodriguez

2017

Chem. Mater.

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We provide a perspective on a series of materials that we have termed tetrahedral transition metal chalcogenides (TTMCs), which have a common layered structural motif that could carry novel functionalities on account of the d-orbital filling. While strong covalent bonding predominates within the TTMC layers, the layers themselves can be held together by van der Waals interactions, Coulombic forces, or even hydrogen bonding. Although similar to transition metal dichalcogenides (TMDs) in some respects, TTMCs have been less explored in their synthesis and materials properties. Unlike TMDs where the transition metal is typically tetravalent and in a 6-coordinate environment, TTMCs contain the transition metal in a tetrahedral environment and in a low valent state of I or II. Structurally, TTMCs crystallize in tetragonal or orthorhombic structures on account of the square lattice formed by the transition metal centers. We present their electronic structure and resulting properties, including superconductivity, metallic conductivity, and itinerant ferromagnetism. We briefly discuss their synthesis and the intercalation chemistry that can be performed to form new phases. Like TMDs, they also offer the tantalizing opportunity to be manipulated toward the formation of two-dimensional (2D) structures. Finally, we provide a future outlook on their development and the possibility that they could be integrated with other 2D materials to form novel heterostructures.

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K_x(C₂H₈N₂)_yFe_2−zS₂: synthesis, phase structure and correlation between K⁺ intercalation and Fe depletion

Abstract: Co-intercalated FeS Kx(C2H8N2)yFe2−zS2 has been synthesized by a sonochemical method. It has been found that the charged K+ intercalation depleted the Fe from [FeS] layers, resulting in disordered Fe vacancies and weak ferrimagnetic semiconducting behavior.

Cited by 10 publications

References 36 publications

Twisting two-dimensional iron sulfide layers into coincident site superlattices via intercalation chemistry

Twisting two-dimensional iron sulfide layers into coincident site superlattices via intercalation chemistry

Cs_0.9Ni_3.1Se₃: A Ni-Based Quasi-One-Dimensional Conductor with Spin-Glass Behavior

Tetrahedral Transition Metal Chalcogenides as Functional Inorganic Materials

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Kx(C2H8N2)yFe2−zS2: synthesis, phase structure and correlation between K+ intercalation and Fe depletion

Abstract: Co-intercalated FeS Kx(C2H8N2)yFe2−zS2 has been synthesized by a sonochemical method. It has been found that the charged K+ intercalation depleted the Fe from [FeS] layers, resulting in disordered Fe vacancies and weak ferrimagnetic semiconducting behavior.

Cited by 10 publications

References 36 publications

Twisting two-dimensional iron sulfide layers into coincident site superlattices via intercalation chemistry

Twisting two-dimensional iron sulfide layers into coincident site superlattices via intercalation chemistry

Cs0.9Ni3.1Se3: A Ni-Based Quasi-One-Dimensional Conductor with Spin-Glass Behavior

Tetrahedral Transition Metal Chalcogenides as Functional Inorganic Materials

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Resources

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K_x(C₂H₈N₂)_yFe_2−zS₂: synthesis, phase structure and correlation between K⁺ intercalation and Fe depletion

Cs_0.9Ni_3.1Se₃: A Ni-Based Quasi-One-Dimensional Conductor with Spin-Glass Behavior