Azot-pentoksid

Nitril nitrat
	; model molekula
Nazivi
	IUPAC naziv Dinitrogen-pentoksid
	Drugi nazivi Azot (V)-oksid
Identifikacija
CAS broj	10102-03-1 ;
3D model (Jmol)	interaktivna slika;
ChEBI	CHEBI:29802 ;
ChemSpider	59627 ;
ECHA InfoCard	100.030.227
MeSH	Dinitrogen+pentoxide
PubChem C ID	66242;
	InChI InChI=1S/N2O5/c3-1(4)7-2(5)6 Ključ: ZWWCURLKEXEFQT-UHFFFAOYSA-N ; InChI=1/N2O5/c3-1(4)7-2(5)6;
	SMILES [O-][N+](=O)O[N+](=O)[O-]; ; ; ; ; ;
Svojstva
Hemijska formula	N2O5
Molarna masa	108,01 g/mol
Agregatno stanje	bela čvrsta supstanca
Gustina	2,05 g/cm3, основно
Tačka ključanja	32.4 ºC sublimira
Rastvorljivost u vodi	reaguje dajući azotnu kiselinu
Struktura
Oblik molekula (orbitale i hibridizacija)	planarni, C2v (približno D2h); N–O–N ≈ 180º
Termohemija
Standardna molarna ; entropija (So298)	178.2 J K−1 mol−1 (s); 355.6 J K−1 mol−1 (g)
Standardna entalpija; stvaranja (ΔfHo298)	−43.1 kJ/mol (s); +11.3 kJ/mol (g)
Opasnosti
Glavne opasnosti	jak oksidant, stvara jaku kiselinu u kontaktu sa vodom
NFPA 704	0 3 0 OX
Tačka paljenja	ne gori
Srodna jedinjenja
	Ukoliko nije drugačije napomenuto, podaci se odnose na standardno stanje materijala (na 25°C [77°F], 100 kPa).
	Reference infokutije

Azot-pentoksid je oksid azota hemijske formule N₂O₅, gde je oksidacioni broj azota +5.

Dobijanje

Može se dobiti na više načina^[3]:
1. dejstvom azotne kiseline na oksid fosfora:

\mathrm {4HNO_{3}+P_{4}O_{10}\longrightarrow \;2N_{2}O_{5}+4HPO_{3}}

2. dejstvom hlora na suv srebro-nitrat:

\mathrm {4AgNO_{3}+2Cl_{2}\longrightarrow \;4AgCl+2N_{2}O_{5}+O_{2}}

3. dejstvom ozona na azot-peroksid:

\mathrm {2NO_{2}+O_{3}\longrightarrow \;N_{2}O_{5}+O_{2}}

Osobine

Ovo je bela kristalna supstanca koja pod običnim pritiskom sublimuje, ne topeći se, a iznad tačke ključanja se raspada. Ukoliko se brzo zagreva, doći će do eksplozije^[3]^[4]^[5]:

\mathrm {2N_{2}O_{5}\longrightarrow \;2N_{2}O_{4}+O_{2}}

Azot-pentoksid je anhidrid azotne kiseline^[3]:

\mathrm {N_{2}O_{5}+H_{2}O\longrightarrow \;2HNO_{3}}

Osobina	Vrednost
Particioni koeficijent^[6] (ALogP)	4,2
Rastvorljivost^[7] (logS, log(mol/L))	-2,9
Polarna površina^[8] (PSA, Å²)	100,9

Izvori

^ Li Q, Cheng T, Wang Y, Bryant SH (2010). „PubChem as a public resource for drug discovery.”. Drug Discov Today. 15 (23-24): 1052—7. PMID 20970519. doi:10.1016/j.drudis.2010.10.003. uredi
^ Evan E. Bolton; Yanli Wang; Paul A. Thiessen; Stephen H. Bryant (2008). „Chapter 12 PubChem: Integrated Platform of Small Molecules and Biological Activities”. Annual Reports in Computational Chemistry. 4: 217—241. doi:10.1016/S1574-1400(08)00012-1.
^ ^a ^b ^v Parkes, G. D. & Fil, D. 1973. Melorova moderna neorganska hemija. Naučna knjiga. Beograd.
^ Lide David R., ur. (2006). CRC Handbook of Chemistry and Physics (87th izd.). Boca Raton, FL: CRC Press. ISBN 978-0-8493-0487-3.
^ Susan Budavari, ur. (2001). The Merck Index: An Encyclopedia of Chemicals, Drugs, and Biologicals (13th izd.). Merck Publishing. ISBN 0911910131.
^ Ghose, A.K.; Viswanadhan V.N. & Wendoloski, J.J. (1998). „Prediction of Hydrophobic (Lipophilic) Properties of Small Organic Molecules Using Fragment Methods: An Analysis of AlogP and CLogP Methods”. J. Phys. Chem. A. 102: 3762—3772. doi:10.1021/jp980230o.
^ Tetko IV, Tanchuk VY, Kasheva TN, Villa AE (2001). „Estimation of Aqueous Solubility of Chemical Compounds Using E-State Indices”. Chem Inf. Comput. Sci. 41: 1488—1493. PMID 11749573. doi:10.1021/ci000392t.
^ Ertl P.; Rohde B.; Selzer P. (2000). „Fast calculation of molecular polar surface area as a sum of fragment based contributions and its application to the prediction of drug transport properties”. J. Med. Chem. 43: 3714—3717. PMID 11020286. doi:10.1021/jm000942e.

Literatura

Holleman A. F.; Wiberg E. (2001). Inorganic Chemistry (1st izd.). San Diego: Academic Press. ISBN 0-12-352651-5.
Housecroft, C. E.; Sharpe, A. G. (2008). Inorganic Chemistry (3. izd.). Prentice Hall. ISBN 978-0-13-175553-6.

Spoljašnje veze

Dinitrogen pentoxide

[1] Li Q, Cheng T, Wang Y, Bryant SH (2010). „PubChem as a public resource for drug discovery.”. Drug Discov Today. 15 (23-24): 1052—7. PMID 20970519. doi:10.1016/j.drudis.2010.10.003. uredi

[2] Evan E. Bolton; Yanli Wang; Paul A. Thiessen; Stephen H. Bryant (2008). „Chapter 12 PubChem: Integrated Platform of Small Molecules and Biological Activities”. Annual Reports in Computational Chemistry. 4: 217—241. doi:10.1016/S1574-1400(08)00012-1.

[мелор-3] v Parkes, G. D. & Fil, D. 1973. Melorova moderna neorganska hemija. Naučna knjiga. Beograd.

[CRC-4] Lide David R., ur. (2006). CRC Handbook of Chemistry and Physics (87th izd.). Boca Raton, FL: CRC Press. ISBN 978-0-8493-0487-3.

[Merck13th-5] Susan Budavari, ur. (2001). The Merck Index: An Encyclopedia of Chemicals, Drugs, and Biologicals (13th izd.). Merck Publishing. ISBN 0911910131.

[6] Ghose, A.K.; Viswanadhan V.N. & Wendoloski, J.J. (1998). „Prediction of Hydrophobic (Lipophilic) Properties of Small Organic Molecules Using Fragment Methods: An Analysis of AlogP and CLogP Methods”. J. Phys. Chem. A. 102: 3762—3772. doi:10.1021/jp980230o.

[7] Tetko IV, Tanchuk VY, Kasheva TN, Villa AE (2001). „Estimation of Aqueous Solubility of Chemical Compounds Using E-State Indices”. Chem Inf. Comput. Sci. 41: 1488—1493. PMID 11749573. doi:10.1021/ci000392t.

[8] Ertl P.; Rohde B.; Selzer P. (2000). „Fast calculation of molecular polar surface area as a sum of fragment based contributions and its application to the prediction of drug transport properties”. J. Med. Chem. 43: 3714—3717. PMID 11020286. doi:10.1021/jm000942e.

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