Английская Википедия:Arsenide hydride
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An arsenide hydride or hydride arsenide is a chemical compound containing hydride (H−) and arsenide (As3−) ions in a single phase. They are in the class of mixed anion compounds.
Preparation
Arsenide hydride compounds may be produced by heating metal hydride and metal arsenide mixtures under pressure.[1]
Properties
Arsenide hydrides are under investigation as unconventional superconductors.[2]
The hydride ions can be replaced by fluoride or oxide ions to yield variations in composition.[3]
Reactions
when heated to 800° CaFeAsH forms three phases.[4]
2CaFeAsH → Ca + CaFe2As2 + H2
name | formula | form | space group | unit cell | volume | density | appearance | properties | reference |
---|---|---|---|---|---|---|---|---|---|
LiCa3As2H | orthorhombic | Pnma | a = 11.4064(7) Å, b = 4.2702(3) Å, c = 11.8762 Z=4 | red | band gap 1.4 eV | [5] | |||
Ca14As6C0.5,NH5 | tetragonal | P4/mbm | a = 15.749, c = 9.1062, Z = 4 | red | band gap 1.6 eV | [5] | |||
CaFeAsH | tetragonal | P4/nmm | a = 0.3878 c = 0.8260 | superconductor | [6] | ||||
CaFeAsF1-xHx | non superconductor | [4] | |||||||
CaFe1−xCoxAsH | tetragonal | P4/nmm | a increases and c decreases with x | superconducting 23 K at x= 0.09 | [7] | ||||
K2Cr3As3H | [8] | ||||||||
K1−δCr3As3Hx x<0.45 | Superconductor Tc=5.8 K | [9][10] | |||||||
Lithium tristrontium diarsenide hydride | Sr3LiAs2H | orthorhombic | Pnma | a = 12.034, b = 4.4698, c = 12.5907; V = 677.2 Å3 | Zintl phase; semiconductor; diamagnetic | [11] | |||
LaFeAsO1−xHx (x<0.53) | superconductor Tc=36 K with x=0.3 | [12] | |||||||
La2Ti2As2H2.3 | tetragonal | I4/mmm | a=3.9595 c=18.0986 | 283.742 | [13] | ||||
La2V2As2Hx | tetragonal | I4/mmm | a=3.9561 c=17.909 | 280.030 | [13] | ||||
La2Cr2As2Hx | tetragonal | I4/mmm | a=3.9934 c=17.380 | 277.17 | [13] | ||||
La2Mn2As2Hx | tetragonal | I4/mmm | a=4.0556 c=17.46 | 287.2 | [13] | ||||
LaMnAsO1−xHx (x=0−0.73) | ferromagnetic | [3] | |||||||
CoLaAsH0.78x | orthorhombic | I41md | a=4.1739 c=14.64 | 254.8 | black | [14] | |||
NiLaAsH0.69 | orthorhombic | I41md | a=4.1660 c=14.5993 | 253.37 | black | [14] | |||
CuLaAsH0.78 | orthorhombic | I41md | a=4.2302 c=14.5780 | 260.86 | 7.08 | black | [14] | ||
LaZn0.5AsHx | hexagonal | P6/mmm | a=4.200 c=4.244 | 64.81 | black | [14] | |||
CeFeAsO1−xHx (x<0.5) | tetragonal | P4/nmm | a=3.95386 c=8.5926 at x=0.4 | superconducting 0.1 < x < 0.4; Tc=47 K with x=0.25 | [12][1] | ||||
NdFeAs(O,H) | superconductor Tc=40K | [15] | |||||||
SmFeAsO1−xHx (x<0.5) | superconductor Tc=55 K at x = 0.2. | [4] | |||||||
Sm2Mn2As2Hx | tetragonal | I4/mmm | a=3.9251 c=16.67 | 256.7 | [13] | ||||
GdFeAsO1−xHx | [12] |
References
- ↑ 1,0 1,1 Шаблон:Cite journal
- ↑ Шаблон:Cite journal
- ↑ 3,0 3,1 Шаблон:Cite journal
- ↑ 4,0 4,1 4,2 Шаблон:Cite journal
- ↑ 5,0 5,1 Шаблон:Cite journal
- ↑ Шаблон:Cite journal
- ↑ Шаблон:Cite journal
- ↑ Шаблон:Cite journal
- ↑ Шаблон:Cite journal
- ↑ Шаблон:Cite journal
- ↑ Шаблон:Cite journal
- ↑ 12,0 12,1 12,2 Шаблон:Cite journal
- ↑ 13,0 13,1 13,2 13,3 13,4 Шаблон:Cite journal
- ↑ 14,0 14,1 14,2 14,3 Шаблон:Cite journal
- ↑ Шаблон:Cite journal