Synthèse et caractérisation d'un nouveau chalcohalogénure à clusters octaédriques de rhénium à caractère bidimensionnel: Re6Se8Cl2

Leduc, L.; Padiou, J.; Перрин, А.; Sergent, M.

doi:10.1016/0022-5088(83)90385-5

Cited by 29 publications

(22 citation statements)

References 12 publications

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“…Further versatility develops with the use of both chalcogenide and halide which provide the novel layered Re6SesCI2 (Re6Sei4Sei-a4/2Sea-i4/2Cla2) and Re6Se6CI6 (Re6Sei6Cli2Cla-a4/2Cla2) and the 1-0 Re6Se5CIs (Leduc, Perrin & Sergent, 1983;Perrin, Leduc & Sergent, 1991). condensed two-by-two (pseudo tetrahedral) through edge sharing (Payne, Ebihara & Corbett, 1991).…”

Section: Note the Two Interpenetrating But Not Interconnected Bcc Netmentioning

confidence: 99%

Structural and Bonding Principles in Metal Halide Cluster Chemistry

Corbett

1992

Modern Perspectives in Inorganic Crystal Chemistry

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ABSTRACT. Metal cluster halides M6X'2 and M'6Xa and their alkali metal derivatives exhibit a variety of structure types because of the evident need to bond terminal or shared halide at all metal vertices. The versatility of systems with group 3 and 4 transition metals is greatly increased by the presence of interstitial heteroatoms (Z) within all thermodynamically stable clusters. The 24 examples of Z provide a wide range of valence electrons and include many that are themselves metals. Structural and bonding principles are described, including the novel characteristics of some cation sites, the regular effects that cations have on cluster bond distances, matrix effects that arise because of characteristic X··X or M -X distances and their influence on metal -metal bonding and electronic configurations, and the use of metal -metal hnl'1d orders to characterize matrix effects. The condensation products of octahedral clusters, particu:arly chains centered by heterometals and double-metal sheet products, are also noted. Condensation to ClustersThe clustering of two to six (or more) metals within a nonmetal matrix is a frequent event among reduced compounds of the early transition (d) elements. The formation of such clusters is probably best known among the chalcogenides, while only a relatively few halide examples were known for Nb, Ta and Mo 10-15 years ago. The relative proportion of anions for a fixed oxidation state of a metal obviously increases in the series pnictide, chalcogenide, halide (e.g., Vp, V 2 S 3 , VCI 3 ), and so the number of possible metal-metal interactions decrease in parallel. Thus, highly reduced pnictides and chalcogenides often exhibit condensed, complex, and relatively isotropic structures, whereas halides more often show limited and lower dimensional interactions between the valence-active metals, i.e., in isolated clusters and chains. The latter characteristics not only provide very novel results but also make more evident many of the bonding and structural principles that go into the determination of cluster and condensed cluster structures. Much of the background to this area can be found in Schafer and Schnering (1964) and Wells (1984).The beginning of metal-metal bonding is often seen structurally whenever the stoichiometric number of nonmetals (halides) per metal in a reduced compound is less than the preferred coordination number so that coordination polyhedra must be shared. Thus, ZrI4 achieves CN6 by sharing two edges of each ZrI6 octahedron, viz, ZrI 2 1 4/2 . Only when valence electrons are available does this allow 27 E. Parthe (ed.).

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Section: Note the Two Interpenetrating But Not Interconnected Bcc Netmentioning

confidence: 99%

Structural and Bonding Principles in Metal Halide Cluster Chemistry

Corbett

1992

Modern Perspectives in Inorganic Crystal Chemistry

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“…Pattie exp~rimentale, Re6SesCI 2 synth~tis+ vers 1300 K en tube de silice scell~ (Leduc et al, 1983) 5. partir des +l+ments Re, Seen grains et de ReC15. Les cristaux se pr6sentent sous forme de plaquettes noires.…”

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Structure du dichlorure et octaséléniure d'hexarhénium, Re6Se8Cl2: composé bidimensionnel à clusters octaédriques Re6

Leduc¹,

Перрин²,

Sergent³

1983

Acta Crystallogr C

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“…1a). The Re6Se8 core has been studied extensively as an isolated molecular unit 22 but until recently, little was known about the electronic properties of Re6Se8Cl2 crystals, save for its semiconducting nature at room temperature 23 with a wide electronic band gap (1.58 eV) 13 .…”

Section: Superatomic Crystals Are Composed Of Discrete Modular Cluste...mentioning

confidence: 99%

Doping-Induced Superconductivity in the van der Waals Superatomic Crystal Re₆Se₈Cl₂

et al. 2020

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Superatomic crystals are composed of discrete modular clusters that emulate the role of atoms in traditional atomic solids 1-4 . Owing to their unique hierarchical structures, these materials are promising candidates to host exotic phenomena, such as superconductivity and magnetism that can be revealed through doping 5-10 . Low-dimensional superatomic crystals hold great promise as electronic components 11,12 , enabling these properties to be applied to nanocircuits, but the impact of doping in such compounds remains unexplored. Here we report the electrical transport properties of Re6Se8Cl2, a two-dimensional superatomic semiconductor 13,14 . Using an in situ current annealing technique, we find that this compound can be n-doped through Cl dissociation, drastically altering the transport behaviour from semiconducting to metallic and giving rise to superconductivity below ~9 K. This work is the first example of superconductivity in a van der Waals (vdW) superatomic crystal; more broadly, it establishes a new chemical strategy to manipulate the electronic properties of vdW materials with labile ligands.

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Synthèse et caractérisation d'un nouveau chalcohalogénure à clusters octaédriques de rhénium à caractère bidimensionnel: Re6Se8Cl2

Cited by 29 publications

References 12 publications

Structural and Bonding Principles in Metal Halide Cluster Chemistry

Structural and Bonding Principles in Metal Halide Cluster Chemistry

Structure du dichlorure et octaséléniure d'hexarhénium, Re6Se8Cl2: composé bidimensionnel à clusters octaédriques Re6

Doping-Induced Superconductivity in the van der Waals Superatomic Crystal Re₆Se₈Cl₂

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Synthèse et caractérisation d'un nouveau chalcohalogénure à clusters octaédriques de rhénium à caractère bidimensionnel: Re6Se8Cl2

Cited by 29 publications

References 12 publications

Structural and Bonding Principles in Metal Halide Cluster Chemistry

Structural and Bonding Principles in Metal Halide Cluster Chemistry

Structure du dichlorure et octaséléniure d'hexarhénium, Re6Se8Cl2: composé bidimensionnel à clusters octaédriques Re6

Doping-Induced Superconductivity in the van der Waals Superatomic Crystal Re6Se8Cl2

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Doping-Induced Superconductivity in the van der Waals Superatomic Crystal Re₆Se₈Cl₂