Oxyarsenides

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Oxyarsenides or arsenide oxides are chemical compounds formally containing the group AsO, with one arsenic and one oxygen atom. The arsenic and oxygen are not bound together as in arsenates or arsenites, instead they make a separate presence bound to the cations (metals), and could be considered as a mixed arsenide-oxide compound. So a compound with OmAsn requires cations to balance a negative charge of 2m+3n. The cations will have charges of +2 or +3. The trications are often rare earth elements or actinides. They are in the category of oxypnictide compounds.

Contents

Some of these compounds are superconductors, but may require doping with fluoride or oxygen deficiency. [1] Yet others undergo colossal magnetoresistance with a lowered electrical resistance in a magnetic field.

Many compounds are layered, containing two metals with the formula XZAsO, with an XAs layer alternating with a ZO layer.

Examples

formulanamemwstructurespace groupcellappearancepropertiessupercondicting Tcreference
Sr2Cr3As2O3tetragonalP4/mmma=4.04032 c=9.33140 V=152.327 [2]
Sr2Cr2AsO3tetragonalP4/nmma=3.90988 c=16.05417 C=245.422 [2]
Sr2Mn3As2O2a=4.1459 c=18.856
 [3]
Sr2Cr1.85Mn1.15As2O2tetragonalI4/mmma = 4.043788 c 18.9977 Z=2 V=310.654 [4]
Sr2CrO3FeAstetragonal [5]
Sr2CrO3CrAsP4/nmma=3.90988 c=16.05417 V=245.422 [6]
Sr2CrO2Cr2OAs2P4/mmma=4.04032 c=9.33140 V=152.327 [6]
Sr2MnZn2As2O2a=4.12624 c=18.6709
 [3]
YFeAsOyttrium iron oxyarsenidetetragonalferromagnetic 62K [7]
Ba2Ti2OAs2Cr2As2tetragonalI4/nmma=4.0391 c=27.8474 [8]
Ba2Ti2Fe2As4OtetragonalI4/nmmsuperconductor [8]
BaTi2As2OtetragonalI4/nmma = 4.047 c = 7.275density wave at 200K [9] [10]
Ba2MnZn2As2O2tetragonalP4/nmma=4.23369 c=19.5087 [3]
LaMnAsO [11]
LaCoAsO [11]
LaFeAsO1−xFxfluorine doped Lanthanum iron oxyarsenidetetragonal26K [7]
LaNiOAsLanthanum Nickel oxyarsenidetetragonalP4/nmmmetallic2.4 [12]
PrFeAsOPraseodymium iron oxyarsenide [1]
NdMnAsO [13] [14]
NdMnAsO0.95F0.05a=4.04870 c=8.89654 [15]
NdFeAsONeodymium iron oxyarsenide [1]
Nd0.9Sr0.1MsAsO [13]
SmFeAsO0.9F0.1Samarium iron oxyarsenidetetragonal55K [7]
TbFeAsOTerbium iron oxyarsenidetetragonalsuperconducting [7]
TbFeAsO0.85tetragonala = 3.889 Å b = 8.37642 [1]
TbRuAsOterbium ruthenium arsenide oxide350.95tetragonalP4/nmma= 4.0254 c=8.0710 V=130.782 Z=2grey [16]
DyRuAsOdysprosium ruthenium arsenide oxide354.49tetragonalP4/nmma=4.01728 c=8.03272 V=129.637 Z=2grey [16]
DyRuAsOdysprosium ruthenium arsenide oxide354.49orthorhombica=4.02033 b=4.00791 c=8.0048 V=128.983 Z=2at 12K [16]
Gd0.8Th0.2FeAsOthorium doped gadolinium iron oxyarsenidetetragonal55K [7]
U2Cu2As3Odiuranium dicopper oxytriarsenideP4/nmma = 3.9111 Å c = 17.916 Z=2 [17]

Related compounds include the oxynitrides, oxyphosphides, oxyantimonides and oxybismuthides.

Related Research Articles

<span class="mw-page-title-main">High-temperature superconductivity</span> Superconductive behavior at temperatures much higher than absolute zero

High-temperature superconductors are defined as materials with critical temperature above 77 K, the boiling point of liquid nitrogen. They are only "high-temperature" relative to previously known superconductors, which function at even colder temperatures, close to absolute zero. The "high temperatures" are still far below ambient, and therefore require cooling. The first break through of high-temperature superconductor was discovered in 1986 by IBM researchers Georg Bednorz and K. Alex Müller. Although the critical temperature is around 35.1 K, this new type of superconductor was readily modified by Ching-Wu Chu to make the first high-temperature superconductor with critical temperature 93 K. Bednorz and Müller were awarded the Nobel Prize in Physics in 1987 "for their important break-through in the discovery of superconductivity in ceramic materials". Most high-Tc materials are type-II superconductors.

<span class="mw-page-title-main">Yttrium(III) arsenide</span> Chemical compound

Yttrium arsenide is an inorganic compound of yttrium and arsenic with the chemical formula YAs. It can be prepared by reacting yttrium and arsenic at high temperature. Some literature has done research on the eutectic system of it and zinc arsenide.

<span class="mw-page-title-main">Iron-based superconductor</span>

Iron-based superconductors (FeSC) are iron-containing chemical compounds whose superconducting properties were discovered in 2006. In 2008, led by recently discovered iron pnictide compounds, they were in the first stages of experimentation and implementation..

In chemistry, oxypnictides are a class of materials composed of oxygen, a pnictogen and one or more other elements. Although this group of compounds has been recognized since 1995, interest in these compounds increased dramatically after the publication of the superconducting properties of LaOFeP and LaOFeAs which were discovered in 2006 and 2008. In these experiments the oxide was partly replaced by fluoride.

<span class="mw-page-title-main">122 iron arsenide</span>

The 122 iron arsenide unconventional superconductors are part of a new class of iron-based superconductors. They form in the tetragonal I4/mmm, ThCr2Si2 type, crystal structure. The shorthand name "122" comes from their stoichiometry; the 122s have the chemical formula AEFe2Pn2, where AE stands for alkaline earth metal (Ca, Ba Sr or Eu) and Pn is pnictide (As, P, etc.). These materials become superconducting under pressure and also upon doping. The maximum superconducting transition temperature found to date is 38 K in the Ba0.6K0.4Fe2As2. The microscopic description of superconductivity in the 122s is yet unclear.

Oxyphosphides are chemical compounds formally containing the group PO, with one phosphorus and one oxygen atom. The phosphorus and oxygen are not bound together as in phosphates or phosphine oxides, instead they are bound separately to the cations (metals), and could be considered as a mixed phosphide-oxide compound. So a compound with OmPn requires cations to balance a negative charge of 2m+3n. The cations will have charges of +2 or +3. The trications are often rare earth elements or actinides. They are in the category of oxy-pnictide compounds.

The phosphidosilicates or phosphosilicides are inorganic compounds containing silicon bonded to phosphorus and one or more other kinds of elements. In the phosphosilicates each silicon atom is surrounded by four phosphorus atoms in a tetrahedron. The triphosphosilicates have a SiP3 unit, that can be a planar triangle like carbonate CO3. The phosphorus atoms can be shared to form different patterns e.g. [Si2P6]10− which forms pairs, and [Si3P7]3− which contains two-dimensional double layer sheets. [SiP4]8− with isolated tetrahedra, and [SiP2]2− with a three dimensional network with shared tetrahedron corners. SiP clusters can be joined, not only by sharing a P atom, but also by way of a P-P bond. This does not happen with nitridosilicates or plain silicates.

Oxybismuthides or bismuthide oxides are chemical compounds formally containing the group BiO, with one bismuth and one oxygen atom. The bismuth and oxygen are not bound together as in bismuthates, instead they make a separate presence bound to the cations (metals), and could be considered as a mixed bismuthide-oxide compound. So a compound with OmBin requires cations to balance a negative charge of 2m+3n. The cations will have charges of +2 or +3. The trications are often rare earth elements or actinides. They are in the category of oxypnictide compounds.

The oxynitrides are a group of inorganic compounds containing oxygen and nitrogen not bound to each other, instead combined with other non-metallic or metallic elements. Some of these are oxosalts with oxygen replaced by nitrogen. Some of these compounds do not have a fixed oxygen to nitrogen ratio, but instead form ceramics with a range of compositions. They are in the class of mixed anion compounds.

Mixed-anion compounds, heteroanionic materials or mixed-anion materials are chemical compounds containing cations and more than one kind of anion. The compounds contain a single phase, rather than just a mixture.

An oxyhydride is a mixed anion compound containing both oxide O2− and hydride ions H−. These compounds may be unexpected as the hydrogen and oxygen could be expected to react to form water. But if the metals making up the cations are electropositive enough, and the conditions are reducing enough, solid materials can be made that combine hydrogen and oxygen in the negative ion role.

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.

The telluride oxides or oxytellurides are double salts that contain both telluride and oxide anions. They are in the class of mixed anion compounds.

The borophosphates are mixed anion compounds containing borate and phosphate anions, which may be joined together by a common oxygen atom. Compounds that contain water or hydroxy groups can also be included in the class of compounds.

A tellurite fluoride is a mixed anion compound containing tellurite and fluoride ions. They have also been called oxyfluorotellurate(IV) where IV is the oxidation state of tellurium in tellurite.

<span class="mw-page-title-main">Arsenide nitride</span>

Arsenide nitrides or nitride arsenides are compounds containing anions composed of nitride (N3−) and arsenide (As3−). They can be considered as mixed anion compounds or mixed pnictide compounds. Related compounds include the arsenide phosphides, germanide arsenides, arsenide carbides, and phosphide nitrides.

Silicide carbides or carbide silicides are compounds containing anions composed of silicide (Si4−) and carbide (C4−) or clusters therof. They can be considered as mixed anion compounds or intermetallic compounds, as silicon could be considered as a semimetal.

Caesium sesquioxide is a chemical compound with the formula Cs2O3 or more accurately Cs4O6. It is an oxide of caesium containing oxygen in different oxidation states. It consists of caesium cations Cs+, superoxide anions O−2 and peroxide anions O2−2. Caesium in this compound has an oxidation state of +1, while oxygen in superoxide has an oxidation state of −1/2 and oxygen in peroxide has an oxidation state of −1. This compound has a structural formula of (Cs+)4(O−2)2(O2−2). Compared to the other caesium oxides, this phase is less well studied, but has been long present in the literature. It can be created by thermal decomposition of caesium superoxide at 290 °C.

Arsenidosilicates are chemical compounds that contain anions with arsenic bonded to silicon. They are in the category of tetrelarsenides, pnictidosilicates, or tetrelpnictides. They can be classed as Zintl phases or intermetallics. They are analogous to the nitridosilicates, phosphidosilicates, arsenidogermanates, and arsenidostannates. They are distinct from arsenate silicates which have oxygen connected with arsenic and silicon, or arsenatosilicates with arsenate groups sharing oxygen with silicate.

Arsenidostanates are chemical compounds that contain anions with arsenic bonded to tin. They are in the category of tetrelarsenides, pnictidostancates, or tetrelpnictides.

References

  1. 1 2 3 4 Shi, Y. G.; Yu, S.; Belik, A. A.; Matsushita, Y.; Tanaka, M.; Katsuya, Y.; Kobayashi, K.; Yamaura, K.; Takayama-Muromachi, E. (2008-08-14). "Synthesis and superconducting properties of the iron oxyarsenide TbFeAsO0.85". arXiv: 0808.1948 [cond-mat.supr-con].
  2. 1 2 Sheath, Bradley C.; Xu, Xiaoyu; Manuel, Pascal; Hadermann, Joke; Batuk, Maria; O’Sullivan, John; Bonilla, Ruy S.; Clarke, Simon J. (2022-08-08). "Structures and Magnetic Ordering in Layered Cr Oxide Arsenides Sr 2 CrO 2 Cr 2 OAs 2 and Sr 2 CrO 3 CrAs". Inorganic Chemistry. 61 (31): 12373–12385. doi:10.1021/acs.inorgchem.2c01773. ISSN   0020-1669. PMC   9364410 . PMID   35895504.
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  4. ↑ Arah, Bor; Ritter, Clemens; Stenning, Gavin B. G.; Mclaughlin, Abbie C. (2022-08-04). "Magnetic Phase Separation in the Oxypnictide Sr 2 Cr 1.85 Mn 1.15 As 2 O 2". Inorganic Chemistry. 61 (32): 12518–12525. doi:10.1021/acs.inorgchem.2c00885. hdl:2164/19321. ISSN   0020-1669. PMC   9387525 . PMID   35926167.
  5. ↑ Tegel, M.; Hummel, F.; Su, Y.; Chatterji, T.; Brunelli, M.; Johrendt, D. (2010-02-01). "Non-stoichometry and the magnetic structure of Sr 2 CrO 3 FeAs". EPL (Europhysics Letters). 89 (3): 37006. arXiv: 0911.0450 . doi:10.1209/0295-5075/89/37006. ISSN   0295-5075. S2CID   119218614.
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  8. 1 2 Ablimit, Abduweli; Sun, Yun-Lei; Jiang, Hao; Bao, Jin-Ke; Zhai, Hui-Fei; Tang, Zhang-Tu; Liu, Yi; Wang, Zhi-Cheng; Feng, Chun-Mu; Cao, Guang-Han (February 2017). "Synthesis, crystal structure and physical properties of a new oxypnictide Ba2Ti2Cr2As4O containing [Ti2As2O]2− and [Cr2As2]2− layers". Journal of Alloys and Compounds. 694: 1149–1153. doi:10.1016/j.jallcom.2016.10.152.
  9. ↑ Hosono, Hideo; Tanabe, Keiichi; Takayama-Muromachi, Eiji; Kageyama, Hiroshi; Yamanaka, Shoji; Kumakura, Hiroaki; Nohara, Minoru; Hiramatsu, Hidenori; Fujitsu, Satoru (2015-05-08). "Exploration of new superconductors and functional materials, and fabrication of superconducting tapes and wires of iron pnictides". Science and Technology of Advanced Materials. 16 (3): 033503. arXiv: 1505.02240 . Bibcode:2015STAdM..16c3503H. doi:10.1088/1468-6996/16/3/033503. ISSN   1468-6996. PMC   5099821 . PMID   27877784.
  10. ↑ Wang, X F; Yan, Y J; Ying, J J; Li, Q J; Zhang, M; Xu, N; Chen, X H (2010-02-24). "Structure and physical properties for a new layered pnictide-oxide: BaTi 2 As 2 O". Journal of Physics: Condensed Matter. 22 (7): 075702. doi:10.1088/0953-8984/22/7/075702. ISSN   0953-8984. PMID   21386395. S2CID   11013090.
  11. 1 2 Otsuka, Shintaro; Onizawa, Manami; Kato, Koma; Hiramoto, Shozo; Yoshida, Fumiko; Moriyoshi, Chikako; Watanabe, Tadataka; Takano, Yoshiki; Kuroiwa, Yoshihiro; Takase, Kouichi (April 2011). "Thermal Expansion of Oxyarsenides (LaO)TAs; T = Transition Metal". Solid State Phenomena. 170: 131–134. doi:10.4028/www.scientific.net/SSP.170.131. ISSN   1662-9779. S2CID   98750630.
  12. ↑ Watanabe, Takumi; Yanagi, Hiroshi; Kamihara, Yoichi; Kamiya, Toshio; Hirano, Masahiro; Hosono, Hideo (August 2008). "Nickel-based layered superconductor, LaNiOAs". Journal of Solid State Chemistry. 181 (8): 2117–2120. arXiv: 0805.4340 . Bibcode:2008JSSCh.181.2117W. doi:10.1016/j.jssc.2008.04.033. S2CID   97227280.
  13. 1 2 Wildman, E. J.; Emery, N.; Mclaughlin, A. C. (2014-12-08). "Electronic and magnetic properties of Nd 1 − x Sr x MnAsO oxyarsenides". Physical Review B. 90 (22): 224413. arXiv: 1501.02996 . Bibcode:2014PhRvB..90v4413W. doi:10.1103/PhysRevB.90.224413. ISSN   1098-0121. S2CID   119285076.
  14. ↑ Marcinkova, A.; Hansen, T. C.; Curfs, C.; Margadonna, S.; Bos, J. -W. G. (2010-11-29). "Nd-induced Mn spin-reorientation transition in NdMnAsO". Physical Review B. 82 (17): 174438. arXiv: 1010.6145 . Bibcode:2010PhRvB..82q4438M. doi:10.1103/PhysRevB.82.174438. ISSN   1098-0121. S2CID   118437912.
  15. ↑ Wildman, Eve J.; Skakle, Janet M. S.; Emery, Nicolas; Mclaughlin, Abbie C. (2012-05-30). "Colossal Magnetoresistance in Mn 2+ Oxypnictides NdMnAsO 1– x F x". Journal of the American Chemical Society. 134 (21): 8766–8769. arXiv: 1207.0958 . doi:10.1021/ja302328t. ISSN   0002-7863. PMID   22571289. S2CID   207081843.
  16. 1 2 3 McGuire, Michael A.; May, Andrew F.; Sales, Brian C. (2012-08-06). "Crystallographic and Magnetic Phase Transitions in the Layered Ruthenium Oxyarsenides TbRuAsO and DyRuAsO". Inorganic Chemistry. 51 (15): 8502–8508. doi:10.1021/ic3010695. ISSN   0020-1669. PMID   22835000.
  17. ↑ Kaczorowski, D.; Potel, M.; Noël, H. (October 1994). "Crystal Structure of the First Uranium Oxyarsenide U2Cu2As3O". Journal of Solid State Chemistry. 112 (2): 228–231. Bibcode:1994JSSCh.112..228K. doi:10.1006/jssc.1994.1296.
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