{{Chembox | ImageFile = Se4N4ICSD CollCode74838.png | ImageSize = | ImageAlt = | IUPACName = 2,4,6,8-tetraselena-1,3,5,7-tetrazatricyclo[3.3.0.0<sup>3,7</sup>]octane | OtherNames = nitrogen selenide |Section1={{Chembox Identifiers | CASNo = 10102-12-2 | ChemSpiderID = 68007107 | PubChem = 134812014 | UNII = K1U2U165UH | StdInChI=1S/N4Se4/c5-1-2-7-3(5)4(6-1)8-2 | StdInChIKey = KEFYKDIPBYQPHW-UHFFFAOYSA-N | SMILES = N12N3[Se]N([Se]1)N([Se]2)[Se]3 }} |Section2={{Chembox Properties | Formula = {{chem2|Se4N4}} | Se=4|N=4 | Appearance = orange solid | Density = 4.223 g/cm<sup>3</sup><ref name=Dehnicke/> | MeltingPt = | BoilingPt = | Solubility = }} |Section3={{Chembox Hazards | MainHazards = explosive | FlashPt = | AutoignitionPt = }} }} '''Tetraselenium tetranitride''' is the inorganic compound with the formula {{chem2|Se4N4}}. Like the analogous tetrasulfur tetranitride {{chem2|S4N4}}, {{chem2|Se4N4}} is an orange solid. It is however less soluble and more shock-sensitive than {{chem2|S4N4}}.<ref>{{cite book |doi=10.1016/B978-0-444-88933-1.50025-8|year=1992 |last1=Klapötke |first1=T.M. |title=The Chemistry of Inorganic Ring Systems |chapter=Binary Selenium-Nitrogen Species and Related Compounds |series=Studies in Inorganic Chemistry |volume=14 |publisher=Elsevier|page=409|isbn=9780444889331 |editor=R. Steudel }}</ref>
As determined by X-ray crystallography, {{chem2|Se4N4}} adopts a cage structure similar to that of {{chem2|S4N4}}. The Se−Se and Se−N distances are 2.740 and 1.800 Å, respectively. The N−Se−N angles are 90°.<ref name=Dehnicke>{{cite journal |doi=10.1002/zaac.19946200610|year=1994 |volume=620 |issue=6 |last1=Folkerts |first1=Hella |last2=Neumüller |first2=Bernhard |last3=Dehnicke |first3=Kurt |title=Synthese und Kristallstruktur einer neuen Modifikation von Tetraselentetranitrid, Se<sub>4</sub>N<sub>4</sub>|journal=Zeitschrift für anorganische und allgemeine Chemie |pages=1011–1015 }}</ref><ref>{{cite journal |doi=10.1107/S0365110X66003475|year=1966 |volume=21 |issue=4 |last1=Bärnighausen |first1=H. |last2=von Volkmann |first2=T. |last3=Jander |first3=J. |title=Die Kristallstruktur von Tetrastickstofftetraselenid N<sub>4</sub>Se<sub>4</sub> |journal=Acta Crystallographica |pages=571–577 |bibcode=1966AcCry..21..571B }}</ref>
Among its many reactions,<ref>{{cite journal |last1= Kelly |first1=P. F. |last2= Woollins |first2= J. D. |title= The Reactivity of Se<sub>4</sub>N<sub>4</sub> in Liquid Ammonia |journal= Polyhedron |year= 1993 |volume= 12 |issue= 10 |pages= 1129–1133 |doi= 10.1016/S0277-5387(00)88201-7 }}</ref><ref>{{cite journal |last1= Kelly |first1= P. F. |last2= Slawin |first2= A. M. Z. |last3= Soriano-Rama |first3= A. |title= Use of Se<sub>4</sub>N<sub>4</sub> and Se(NSO)<sub>2</sub> in the Preparation of Palladium Adducts of Diselenium Dinitride, Se<sub>2</sub>N<sub>2</sub>; Crystal Structure of [PPh<sub>4</sub>]<sub>2</sub>[Pd<sub>2</sub>Br<sub>6</sub>(Se<sub>2</sub>N<sub>2</sub>)] |journal= Dalton Transactions |year= 1997 |volume= 1997 |issue= 4 |pages= 559–562 |doi= 10.1039/a606311j }}</ref> {{chem2|Se4N4}} reacts with aluminium bromide to form adducts of {{chem2|Se2N2}}.<ref>{{cite journal |last1= Kelly |first1= P. F. |last2= Slawin |first2= A. M. Z. |title= Preparation and Crystal Structure of [(AlBr<sub>3</sub>)<sub>2</sub>(Se<sub>2</sub>N<sub>2</sub>)], the First Example of a Main-Group Element Adduct of Diselenium Dinitride |journal= Dalton Transactions |year= 1996 |volume= 1996 |issue= 21 |pages= 4029–4030 |doi= 10.1039/DT9960004029 }}</ref>
==References== <references />
{{Nitrides}}
Category:Explosive chemicals Category:Inorganic compounds Category:Nitrides Category:Eight-membered rings Category:Nitrogen heterocycles Category:Heterocyclic compounds with 3 rings Category:Selenium compounds