Thulium monoselenide

Thulium monoselenide  Identifiers

CAS Number

* 12039-53-1 Y

3D model (JSmol)

* Interactive image

ChemSpider |

* 74779

EC Number |

* 234-896-1

PubChem CID

* 82871

InChI

* InChI=1S/Se.Tm

Key: GFKHZESYKBWHEV-UHFFFAOYSA-N

SMILES

* [Se]=[Tm]

Properties

Chemical formula

| TmSe
Molar mass | 247.89
Density | 9.1 g/cm3
Melting point |  2,060 °C (3,740 °F; 2,330 K)
Related compounds

Other anions

| TmS
TmTe

Other cations

| ErSe
YbSe

Related compounds

| Tm2Se3

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

Infobox references

Thulium monoselenide is a mixed valence[1] compound of selenium and thulium with the chemical formula TmSe.

## Preparation

Thulium monoselenide can be prepared by directly reacting thulium and selenium:[2]

Tm + Se → TmSe

## Properties

Thulium monoselenide forms reddish-brown cubic crystals,[2] space group Fm3m, unit cell parameters a = 0.5640 nm, Z = 4, and a structure similar to that of sodium chloride.[3][4][2]

The compound melts congruently at 2060 °C, and at 1100 °C and 1730 °C, phase transitions occur in the compound. The Néel temperature of thulium monoselenide is 1.85–2.8 K.[2]

## References

1. ↑ Kaindl, G.; Brewer, W. D.; Kalkowski, G.; Holtzberg, F. (1983-11-28). "$M$-Edge X-Ray Absorption Spectroscopy: A New Tool for Dilute Mixed-Valent Materials". Physical Review Letters 51 (22): 2056–2059. doi:10.1103/PhysRevLett.51.2056. https://link.aps.org/doi/10.1103/PhysRevLett.51.2056.
2. ↑ 2.0 2.1 2.2 2.3 Bucher, E.; Andres, K.; di Salvo, F. J.; Maita, J. P.; Gossard, A. C.; Cooper, A. S.; Hull, G. W. (1975-01-01). "Magnetic and some thermal properties of chalcogenides of Pr and Tm and a few other rare earths". Physical Review B 11 (1): 500–513. doi:10.1103/PhysRevB.11.500. Bibcode: 1975PhRvB..11..500B. https://link.aps.org/doi/10.1103/PhysRevB.11.500.
3. ↑ Predel, B. (1998), "Se-Tm (Selenium-Thulium)" (in en), Pu-Re – Zn-Zr, Landolt-Börnstein - Group IV Physical Chemistry (Berlin/Heidelberg: Springer-Verlag) 5 J: pp. 1–2, doi:10.1007/10551312_2721, ISBN 3-540-61742-6, https://dx.doi.org/10.1007/10551312_2721, retrieved 2024-01-22
4. ↑ Diagrammy sostojanija dvojnych metalličeskich sistem: spravočnik v trech tomach. 3,2. Moskva: Mašinostroenie. 2001. ISBN 978-5-217-02932-7.

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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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