Napredna pretraga

Pregled bibliografske jedinice broj: 82318

Monothiocyanatoiron(III) complex in dichloromethane: methanol solvent mixture.


Mihaljević, Branka; Ražem, Dušan
Monothiocyanatoiron(III) complex in dichloromethane: methanol solvent mixture. // Croatica Chemica Acta, 76 (2003), 249-255 (međunarodna recenzija, članak, znanstveni)


Naslov
Monothiocyanatoiron(III) complex in dichloromethane: methanol solvent mixture.

Autori
Mihaljević, Branka ; Ražem, Dušan

Izvornik
Croatica Chemica Acta (0011-1643) 76 (2003); 249-255

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Iron(III); thiocyanate; thiocyanatoiron(III) complex; stability constant; spectrophotometry; non-aqueous medium

Sažetak
Complexation of ferric ion with thiocyanate in dichloromethane:methanol solvent mixture was studied because of our interest in the analytical uses of ferrous-to-ferric transformations in non-aqueous media. Molar absorptivity and composition of the complex, as well as solvolysis constant and stability constant of the complex as function of the composition of the solution were determined by spectrophotometry. The composition of the complex throughout the range of solubility of the components was that of a monocomplex, [FeNCS]2+. In highly acidic solutions molar absorptivity of the complex was not influenced by acid concentration and was (13700 &plusmn ; ; 700) dm3 mol-1 cm-1. Solvolysis constant was similar to the value in water, Ks = 7.0 ´ 10-3 mol dm-3. Stability constant of the complex, on the other hand, was strongly influenced by concentration of the acid. The extrapolation to the infinite acid concentration yielded stability constant 40500 dm3 mol-1, which is adequate for the analytical use of the complex in non-aqueous medium.

Izvorni jezik
Engleski

Znanstvena područja
Kemija



POVEZANOST RADA


Projekt / tema
0098063

Ustanove
Institut "Ruđer Bošković", Zagreb

Citiraj ovu publikaciju

Mihaljević, Branka; Ražem, Dušan
Monothiocyanatoiron(III) complex in dichloromethane: methanol solvent mixture. // Croatica Chemica Acta, 76 (2003), 249-255 (međunarodna recenzija, članak, znanstveni)
Mihaljević, B. & Ražem, D. (2003) Monothiocyanatoiron(III) complex in dichloromethane: methanol solvent mixture.. Croatica Chemica Acta, 76, 249-255.
@article{article, year = {2003}, pages = {249-255}, keywords = {iron(III), thiocyanate, thiocyanatoiron(III) complex, stability constant, spectrophotometry, non-aqueous medium}, journal = {Croatica Chemica Acta}, volume = {76}, issn = {0011-1643}, title = {Monothiocyanatoiron(III) complex in dichloromethane: methanol solvent mixture.}, keyword = {iron(III), thiocyanate, thiocyanatoiron(III) complex, stability constant, spectrophotometry, non-aqueous medium} }

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus