Jod-pentoksid

Jod pentoksid
	dijod-pentoksid
Drugi nazivi	jod(V) oksid; anhidrid jodne kiseline
Identifikacija
CAS registarski broj	12029-98-0
PubChem	159402
ChemSpider	140179
MeSH	Iodine+pentoxide
ChEBI	29914
Jmol-3D slike	Slika 1
SMILES
	O=I(=O)OI(=O)=O
InChI
	InChI=1S/I2O5/c3-1(4)7-2(5)6 ; Kod: BIZCJSDBWZTASZ-UHFFFAOYSA-N InChI=1/I2O5/c3-1(4)7-2(5)6
Svojstva
Molekulska formula	I2O5
Molarna masa	333.81 g/mol
Agregatno stanje	bela kristalna supstanca
Gustina	4.980 g cm−3
Tačka topljenja	? °C
Tačka ključanja	? °C
Opasnost
Opasnost u toku rada	oksidant
	; ; Ukoliko nije drugačije napomenuto, podaci se odnose na standardno stanje (25 °C, 100 kPa) materijala
	Infobox references

Jod-pentoksid je oksid joda hemijske formule I₂O₅, gde je oksidacioni broj joda +5.

Dobijanje

Može se dobiti zagrevanjem jodne kiseline na temperaturi od oko 170 °C, jer se ona tada raspada uz gubitak vode^[5]:

\mathrm {2HIO_{3}\longrightarrow \;H_{2}O+I_{2}O_{5}}

Svojstva

Jod-pentoksid je bela kristalna supstanca, za koju važi da je postojanija nego bilo koji drugi oksid hlora ili broma. Ipak, iznad 200 °C se raspada na jod i kiseonik. Sa vodom gradi jodnu kiselinu, te se smatra njenim anhidridom.^[5]

Osobina	Vrednost
Particioni koeficijent^[6] (ALogP)	1,3
Rastvorljivost^[7] (logS, log(mol/L))	4,1
Polarna površina^[8] (PSA, Å²)	77,5

Primena

Ovaj oksid je jako oksidaciono sredstvo, pa može da oksiduje ugljen-monoksid, što je važno u otkrivanju ovog gasa u smeši, čak i u malim količinama:

\mathrm {I_{2}O_{5}+5CO\longrightarrow \;I_{2}+5CO_{2}}

Reagens koji se koristi u ovu svrhu i koji sadrži jod-pentoksid se naziva hulmanit.^[5]

Reference

↑ 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 Greenwood, Norman N.; Earnshaw, A. (1997), Chemistry of the Elements (2nd ed.), Oxford: Butterworth-Heinemann, pp. 851-852. ISBN 978-0-7506-3365-9.
↑ ^5,0 ^5,1 ^5,2 Parkes, G. D. & Fil, D. 1973. Melorova moderna neorganska hemija. Naučna knjiga. Beograd.
↑ 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.

Vanjske veze

Portal Hemija

Iodine 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

[G&E-4] 4,0 ^4,1 Greenwood, Norman N.; Earnshaw, A. (1997), Chemistry of the Elements (2nd ed.), Oxford: Butterworth-Heinemann, pp. 851-852. ISBN 978-0-7506-3365-9.

[мелор-5] 5,0 ^5,1 ^5,2 Parkes, G. D. & Fil, D. 1973. Melorova moderna neorganska hemija. Naučna knjiga. Beograd.

[6] 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.

[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. DOI:10.1021/ci000392t. PMID 11749573.

[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. DOI:10.1021/jm000942e. PMID 11020286.

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