Azot-pentoksid

Nitril nitrat
	Dinitrogen-pentoksid
Drugi nazivi	Azot (V)-oksid
Identifikacija
CAS registarski broj	10102-03-1
PubChem	66242
ChemSpider	59627
MeSH	Dinitrogen+pentoxide
ChEBI	29802
Jmol-3D slike	Slika 1
SMILES
	[O-][N+](=O)O[N+](=O)[O-]
InChI
	InChI=1S/N2O5/c3-1(4)7-2(5)6 ; Kod: ZWWCURLKEXEFQT-UHFFFAOYSA-N InChI=1/N2O5/c3-1(4)7-2(5)6
Svojstva
Molekulska formula	N2O5
Molarna masa	108.01 g/mol
Agregatno stanje	bela čvrsta supstanca
Gustina	2.05 g/cm3, osnovno
Tačka ključanja	32.4 °C sublimira
Rastvorljivost u vodi	reaguje dajući azotnu kiselinu
Struktura
Oblik molekula (orbitale i hibridizacija)	planarni, C2v (aproksimativno D2h); N–O–N ≈ 180º
Termohemija
Standardna entalpija stvaranja jedinjenja ΔfHo298	−43.1 kJ/mol (s); +11.3 kJ/mol (g)
Standardna molarna entropija So298	178.2 J K−1 mol−1 (s); 355.6 J K−1 mol−1 (g)
Opasnost
EU-indeks	Nije na listi
Opasnost u toku rada	jak oksidant, stvara jaku kiselinu u kontaktu sa vodom
NFPA 704	0 3 0 OX
Tačka paljenja	ne gori
Srodna jedinjenja
Srodna jedinjenja-; azotni oksidi	N2O; NO; N2O3; NO2; N2O4
Сродна једињења	Azotna kiselina
	; ; Ukoliko nije drugačije napomenuto, podaci se odnose na standardno stanje (25 °C, 100 kPa) materijala
	Infobox references

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

Dobijanje

Može se dobiti na više načina^[4]:
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^[4]^[5]^[6]:

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

Azot-pentoksid je anhidrid azotne kiseline^[4]:

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

Osobina	Vrednost
Particioni koeficijent^[7] (ALogP)	4,2
Rastvorljivost^[8] (logS, log(mol/L))	-2,9
Polarna površina^[9] (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. DOI:10.1016/j.drudis.2010.10.003. PMID 20970519. edit
↑ 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.
↑ Hettne KM, Williams AJ, van Mulligen EM, Kleinjans J, Tkachenko V, Kors JA. (2010). „Automatic vs. manual curation of a multi-source chemical dictionary: the impact on text mining”. J Cheminform 2 (1): 3. DOI:10.1186/1758-2946-2-3. PMID 20331846. edit
↑ ^4,0 ^4,1 ^4,2 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. 0-8493-0487-3.
↑ Susan Budavari, ur. (2001). The Merck Index: An Encyclopedia of Chemicals, Drugs, and Biologicals (13th izd.). Merck Publishing. ISBN 0-911910-13-1.
↑ Ghose, A.K., Viswanadhan V.N., and 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. DOI:10.1021/ci000392t. PMID 11749573.
↑ 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. DOI:10.1021/jm000942e. PMID 11020286.

Literatura

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

Spoljašnje veze

Portal Hemija

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. DOI:10.1016/j.drudis.2010.10.003. PMID 20970519. edit

[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.

[3] Hettne KM, Williams AJ, van Mulligen EM, Kleinjans J, Tkachenko V, Kors JA. (2010). „Automatic vs. manual curation of a multi-source chemical dictionary: the impact on text mining”. J Cheminform 2 (1): 3. DOI:10.1186/1758-2946-2-3. PMID 20331846. edit

[мелор-4] 4,0 ^4,1 ^4,2 Parkes, G. D. & Fil, D. 1973. Melorova moderna neorganska hemija. Naučna knjiga. Beograd.

[CRC-5] Lide David R., ur. (2006). CRC Handbook of Chemistry and Physics (87th izd.). Boca Raton, FL: CRC Press. 0-8493-0487-3.

[Merck13th-6] Susan Budavari, ur. (2001). The Merck Index: An Encyclopedia of Chemicals, Drugs, and Biologicals (13th izd.). Merck Publishing. ISBN 0-911910-13-1.

[7] Ghose, A.K., Viswanadhan V.N., and 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.

[8] 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. DOI:10.1021/ci000392t. PMID 11749573.

[9] 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. DOI:10.1021/jm000942e. PMID 11020286.

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