Oxynitride

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.

Many can be formed by heating an oxide or carbonate with ammonia. The hydrogen can assist by reducing some of the oxygen. With higher temperatures and pressures nitrogen can be heated with a mixed oxide to yield a product. Other nitrogen rich compounds that can be heated with oxygen containing material are urea and melamine. For example urea heated with ammonium dihydrogen phosphate yields a phosphorus oxynitride.

There may not be a definite ratio of nitrogen to oxygen, and also nitrogen and oxygen may be disordered, swapping places at random.

Compared to oxides, the oxynitrides have a smaller band gap.{{Cite journal|last1=Tang|first1=Ya|last2=Kato|first2=Kosaku|last3=Oshima|first3=Takayoshi|last4=Mogi|first4=Hiroto|last5=Miyoshi|first5=Akinobu|last6=Fujii|first6=Kotaro|last7=Yanagisawa|first7=Kei-ichi|last8=Kimoto|first8=Koji|last9=Yamakata|first9=Akira|last10=Yashima|first10=Masatomo|last11=Maeda|first11=Kazuhiko|date=2020-07-19|title=Synthesis of Three-Layer Perovskite Oxynitride K 2 Ca 2 Ta 3 O 9 N·2H 2 O and Photocatalytic Activity for H 2 Evolution under Visible Light|journal=Inorganic Chemistry|volume=59|issue=15|language=en|pages=11122–11128|doi=10.1021/acs.inorgchem.0c01607|pmid=32683860|s2cid=220653385|issn=0020-1669}}

List

class="wikitable"

!name

!other name

!formula

properties

!reference

aluminium oxynitride

|ALON

|transparent, tough

Lithium silicon oxynitride

|LiSiON

|Pca2₁ Wurtzite structure a=5.1986 b=6.3893 c=4.7398

|{{Citation|last1=Brese|first1=Nathaniel E.|title=Crystal chemistry of inorganic nitrides|date=1992|url=http://link.springer.com/10.1007/BFb0036504|work=Complexes, Clusters and Crystal Chemistry|volume=79|pages=307–378|place=Berlin/Heidelberg|publisher=Springer-Verlag|language=en|doi=10.1007/bfb0036504|isbn=978-3-540-55095-2|access-date=2020-11-11|last2=O'Keeffe|first2=Michael|url-access=subscription}}

|SiAlON

|SiAlNO (Li,Mg,Y,Le,Ce,Eu)

Silicon oxynitride

sodium silicon oxynitride

|NaSiON

|white Wurtzite structure

Sinoite

|Si₂N₂O

mineral

|Li₁₄Cr₂N₈O

|P{{overbar|3}} a=5.799 c=8.263

|NaGeON

|white Wurtzite structure

potassium germanium oxynitride

|KGeON

|yellow Wurtzite structure a=5.7376 b=8.0535 c=5.2173

|(Si,Ge)₂N₂O

|{{Cite journal|last1=Kang|first1=Lei|last2=He|first2=Gang|last3=Zhang|first3=Xinyuan|last4=Li|first4=Jiangtao|last5=Lin|first5=Zheshuai|last6=Huang|first6=Bing|date=2021-05-17|title=Alloy Engineering of a Polar (Si,Ge) 2 N 2 O System for Controllable Second Harmonic Performance|url=https://pubs.acs.org/doi/10.1021/acs.inorgchem.1c00590|journal=Inorganic Chemistry|language=en|volume=60|issue=10|pages=7381–7388|doi=10.1021/acs.inorgchem.1c00590|pmid=33905663|issn=0020-1669|arxiv=2009.06932|s2cid=231925656}}

|CaTaO₂N

|perovskite

|{{cite journal |last1=Fuertes |first1=Amparo |title=Chemistry and applications of oxynitride perovskites |journal=Journal of Materials Chemistry |date=2012 |volume=22 |issue=8 |pages=3293 |doi=10.1039/C2JM13182J}}

|SrTaO₂N

|perovskite

|BaTaO₂N

|perovskite

|CaNbO₂N

|perovskite

|SrNbO₂N

|perovskite

|Sr₂NbO₃N

strontium gallium oxynitride

|Sr₄GaN₃O

|red Pbca a = 7.4002 b = 24.3378 c = 7.4038Å, Z = 8

|{{Cite journal|last1=Mallinson|first1=Phillip M.|last2=Gál|first2=Zoltán A.|last3=Clarke|first3=Simon J.|date=January 2006|title=Two New Structurally Related Strontium Gallium Nitrides: Sr 4 GaN 3 O and Sr 4 GaN 3 (CN 2 )|url=https://pubs.acs.org/doi/10.1021/ic051542q|journal=Inorganic Chemistry|language=en|volume=45|issue=1|pages=419–423|doi=10.1021/ic051542q|pmid=16390084|issn=0020-1669|url-access=subscription}}

|Sr₃Nb₂O₅N₂

|In₃₂ON₁₇F₄₃

|Ia{{overbar|3}} a=10.536 fluorite structure

|BaNbO₂N

|perovskite

|LaTaON₂

|LnTiO₂N

|LnTaO₂N

|EuTaO₂N

|EuNbO₂N

|LnNbO₂N

|LnVO₂N

|CaTiO₂N

|CaZrO₂N

|LaZrO₂N

|EuWON₂

|Ln₂AlO₃N

Praseodymium(V) oxide nitride

|PrON

|molecular

|{{Cite journal |last=Hu |first=Shu-Xian |last2=Jian |first2=Jiwen |last3=Su |first3=Jing |last4=Wu |first4=Xuan |last5=Li |first5=Jun |last6=Zhou |first6=Mingfei |date=2017 |title=Pentavalent lanthanide nitride-oxides: NPrO and NPrO − complexes with NPr triple bonds |url=https://xlink.rsc.org/?DOI=C7SC00710H |journal=Chemical Science |language=en |volume=8 |issue=5 |pages=4035–4043 |doi=10.1039/C7SC00710H |issn=2041-6520 |pmc=5434915 |pmid=28580119}}

Phosphoryl nitride

|PNO

α-quartz, β-cristobalite, or moganite structure

Titanium nickel oxynitride

|NiTiNO

Chromium oxynitride

|Cr(N,O)

galloaluminophosphate oxynitride

|AlGaPON

|{{cite journal|last1=Lee|first1=Eunha|last2=Kim|first2=Taeho|last3=Benayad|first3=Anass|last4=Hur|first4=Jihyun|last5=Park|first5=Gyeong-Su|last6=Jeon|first6=Sanghun|date=5 April 2016|title=High mobility and high stability glassy metal-oxynitride materials and devices|journal=Scientific Reports|language=en|volume=6|issue=1|page=23940|doi=10.1038/srep23940|pmid=27044371|pmc=4820723|bibcode=2016NatSR...623940L|issn=2045-2322|doi-access=free}}

zinc oxynitride

|ZnON

Titanium oxynitride

|TiO_xN_y

|{{cite journal|last1=Braic|first1=Laurentiu|last2=Vasilantonakis|first2=Nikolaos|last3=Mihai|first3=Andrei|last4=Villar Garcia|first4=Ignacio Jose|last5=Fearn|first5=Sarah|last6=Zou|first6=Bin|last7=Alford|first7=Neil McN.|last8=Doiron|first8=Brock|last9=Oulton|first9=Rupert F.|last10=Maier|first10=Stefan A.|last11=Zayats|first11=Anatoly V.|date=24 August 2017|title=Titanium Oxynitride Thin Films with Tunable Double Epsilon-Near-Zero Behavior for Nanophotonic Applications|journal=ACS Applied Materials & Interfaces|volume=9|issue=35|pages=29857–29862|doi=10.1021/acsami.7b07660|last12=Petrov|first12=Peter K.|pmid=28820932|arxiv=1703.09467 |hdl=10044/1/52727|s2cid=206458627|hdl-access=free}}

|K₂Ca₂Ta₃O₉N·2H₂O

|perovskite

|K₂LaTa₂O₆N·1.6H₂O

References

Category:Oxygen compounds

Category:Nitrides