Rhenium diselenide

d: SEM micrograph of a typical parallelogram-shaped ReSe2 flake, scale bar 1 µm.
g: top view of the ReSe2 atomic lattice

Unit cell of rhenium diselenide.

Names
IUPAC name

Bis(selanylidene)rhenium

Other names

Rhenium(IV) selenide

Identifiers

CAS Number

* 12038-64-1

3D model (JSmol)

* Interactive image

ChemSpider |

* 74776

EC Number |

* 234-879-9

PubChem CID

* 82865

InChI

* InChI=1S/2Se.Re

Key: CUYHGAIVHCHFIA-UHFFFAOYSA-N

SMILES

* [Se]=[Re]=[Se]

Properties

Chemical formula

| ReSe2
Molar mass | 344.13 g/mol[1]
Odor | odorless
Density | 9.22 g/cm3[2]

Solubility in water

| insoluble
Band gap | ~1.2 eV (300 K), indirect[3]
Structure

Crystal structure

| Triclinic, aP12, space group P1, No 2[2]

Lattice constant

a = 0.6602 nm, b = 0.6716 nm, c = 0.6728 nm

α = 91.82°, β = 104.9°, γ = 118.94°

Formula units (Z)

| 4
Related compounds

Other anions

| Rhenium(IV) oxide
Rhenium disulfide
Rhenium ditelluride

Other cations

| Manganese diselenide

Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Infobox references

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Rhenium diselenide is an inorganic compound with the formula ReSe2. It has a layered structure where atoms are strongly bonded within each layer. The layers are held together by weak Van der Waals bonds, and can be easily peeled off from the bulk material.

## Synthesis

Schematic of the ReSe2 growth from Se and ReO3

Rhenium diselenide with a thickness as small as a triple-atomic layer can be produced by chemical vapor deposition at ambient pressure. A mixture of Ar and hydrogen gases is flown through a tube whose ends are kept at different temperatures. The substrate and ReO3 powder are placed at the hot end which is heated to 750 °C, and selenium powder is located at the cold end which is kept at 250 °C.[4]

2 ReO3 \+ 7 Se → 2 ReSe2 \+ 3 SeO2

## Properties

Top view (left) and side view (right) of the ReSe2 lattice

As most other dichalcogenides of transition metals, rhenium diselenide has a layered structure where atoms are strongly bonded within each layer and the layers are held together by weak Van der Waals bonds. However, while most other layered dichalcogenides have a high (hexagonal) symmetry, ReSe2 has a very low triclinic symmetry, and this symmetry does not change from the bulk to monolayers.[4]

## References

1. ↑ Haynes, William M., ed (2011). CRC Handbook of Chemistry and Physics (92nd ed.). Boca Raton, FL: CRC Press. p. 4.84. ISBN 1439855110.
2. ↑ 2.0 2.1 Wildervanck, J.C; Jellinek, F (1971). "The dichalcogenides of technetium and rhenium". Journal of the Less Common Metals 24: 73. doi:10.1016/0022-5088(71)90168-8.
3. ↑ Dumcenco, D; Huang, Y. S; Liang, C. H; Tiong, K. K (2008). "Optical characterization of Au-doped rhenium diselenide single crystals". Journal of Applied Physics 104 (6): 063501. doi:10.1063/1.2977682.
4. ↑ 4.0 4.1 Jiang, Shaolong; Hong, Min; Wei, Wei; Zhao, Liyun; Zhang, Na; Zhang, Zhepeng; Yang, Pengfei; Gao, Nan et al. (2018). "Direct synthesis and in situ characterization of monolayer parallelogrammic rhenium diselenide on gold foil". Communications Chemistry 1. doi:10.1038/s42004-018-0010-6.

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Rhenium compounds

Rhenium(0)|

| Organorhenium(0)|

* Re2(CO)10

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Rhenium(I)|

| Organorhenium(I)|

* Re(CO)5Br
* ReH(CO)5

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Rhenium(II)|

* ReB2

Rhenium(III)|

* ReCl3

Rhenium(IV)|

* ReO2
* ReS2
* ReSe2
* ReTe2

Rhenium(V)|

* ReOCl3(P(C6H5)3)2
* ReCl5

Rhenium(VI)|

* ReF6
* ReO3

Rhenium(VII)|

* ReF7
* Re2O7
* Re2S7
* Re2O7(OH2)2
* NH4ReO4
* NaReO4
* K2ReH9

| Organorhenium(VII)|

* CH3ReO3

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Selenides

| H2Se
H2Se2 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | He

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Li2Se | Be |  |  |  |  |  |  |  |  |  |  | B | CSe2
OCSe | (NH4)2Se | O | F | Ne
Na2Se | MgSe |  |  |  |  |  |  |  |  |  |  | Al2Se3 | Si | PxSey | S | Cl | Ar
K2Se | CaSe | Sc2Se3 | TiSe2 | V | CrSe
Cr2Se3 | MnSe
MnSe2 | FeSe | CoSe | NiSe | CuSe | ZnSe | GaSe
Ga2Se3 | GeSe | As2Se3
As4Se3 | Se | Br | Kr
Rb2Se | SrSe | Y2Se3 | Zr | NbSe2
NbSe3 | MoSe2 | Tc | Ru | Rh | Pd | Ag2Se | CdSe | In2Se3 | SnSe
SnSe2 | Sb2Se3 | Te | I | Xe
Cs2Se | BaSe | *  | Hf | Ta | WSe2
WSe3 | ReSe2 | Os | Ir | Pt | Au | HgSe | Tl2Se | PbSe | Bi2Se3 | Po | At | Rn
Fr | Ra | **  | Rf | Db | Sg | Bh | Hs | Mt | Ds | Rg | CnSe | Nh | Fl | Mc | Lv | Ts | Og |  |  |  |  |  |  |  |
|  | ↓ |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| * | La2Se3 | Ce2Se3 | Pr2Se3 | Nd2Se3 | Pm | Sm2Se3 | Eu2Se3 | Gd | Tb | Dy | Ho | Er2Se3 | Tm2Se3 | Yb | Lu |
| ** | Ac | ThSe2 | Pa | USe2 | Np | Pu | Am | Cm | Bk | Cf | Es | Fm | Md | No | Lr |

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