Výsledky vyhledávání - "Gharib Farrokh"

Akademický článek

Ionic strength effect on deprotonation of para-sulfonatocalix[4]arene

Autor: Faraji Mohammad, Farajtabar Ali, Gharib Farrokh

Publikováno v: Journal of the Serbian Chemical Society, Vol 78, Iss 5, Pp 681-688 (2013)

The deprotonation of para-sulfonatocalix[4]arene were studied by a combination of spectrophotometric and potentiometric methods at 25°C. The ionic strength of solutions was kept constant by sodium perchlorate as background electrolyte at 0.10 to 4.0

Externí odkaz: https://doaj.org/article/bd1738d888a643d592cea28bb0a46611

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Akademický článek

Autoprotolysis in water/methanol/NaCl ternary systems

Autor: Farajtabar Ali, Naderi Fereshteh, Gharib Farrokh

Publikováno v: Journal of the Serbian Chemical Society, Vol 78, Iss 10, Pp 1561-1567 (2013)

A potentiometric method was used to determine the autoprotolysis constant for aqueous solutions containing 0, 20 and 40 weight percent of methanol in wide range of NaCl concentration at 25°C. Ionic strength was ranged between 0.25 and 2.00 mol L-

Externí odkaz: https://doaj.org/article/a1c2c0751ce44558be45bba2cc6c54ac

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Akademický článek

Synthesis and complexive abilities in cone conformation of upper rim functionalized of calix[4]arene with alkali and alkali earth cations

Autor: Gharib Farrokh, Zare Karim, Osouleddini Noushin

Publikováno v: Main Group Metal Chemistry, Vol 34, Iss 1-2, Pp 47-51 (2011)

The synthesis and complexive abilities of 5-mono[(tert-butoxycarbonyl)-amino]-11,17,23-triamino-25,26,27,28-tetrabutoxycalix[4]arene (L1) and 5,11,17,23-tetrakis[(tert-butoxycarbonyl)-amino]-25,26,27,28-tetrabutoxycalix[4]arene (L2) towards the alk

Externí odkaz: https://doaj.org/article/56f22e4e17244fe38984892b1b9a7a6f

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Akademický článek

Deprotonation of salicylic acid and 5-nitrosalicylic acid in aqueous solutions of ethanol

Autor: Faraji Mohammad, Farajtabar Ali, Gharib Farrokh, Ghasemnejad-Borsa Hassan

Publikováno v: Journal of the Serbian Chemical Society, Vol 76, Iss 11, Pp 1455-1463 (2011)

The protonation constant values of two hydroxybenzoic acids (salicylic and 5-nitrosalicylic acid) were studied in some water-ethanol solutions using spectrophotometric and potentiometric methods at 25°C and in an ionic strength of 0.1 M sodium perch

Externí odkaz: https://doaj.org/article/7083f38a4f4249a2bf546c8ac044ea94

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