Saber UCV
Repositorio Institucional
Repositorio Institucional
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https://saber.ucv.ve/handle/10872/10375
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| Title: | Solution studies of vanadium(IV), vanadium(V), and vanadium(IV,V) complexes with methionine in 3.0 mol LZ1 KCl ionic medium at 25 C |
| Authors: | CARBONELL, K. Araujo, Mary Lorena Martínez, José Daniel LUBES, V: BRITO, FELIPE |
| Keywords: | Solution equilibria; Vanadium complexes; Stability constants; LETAGROP program; Theoretical calculations |
| Issue Date: | 23-Jun-2015 |
| Abstract: | A study of the Hþ–VO2þ-methionine, Hþ–VOþ 2 –methionine, and Hþ–V2O3þ 3 –methionine (ligand, HL) systems by emf(H) measurements in 3.0 mol L 1 KCl ionic medium at 25 C is presented here. Data analysis using the LETAGROP program indicate formation of vanadium(IV) species [HVOL]2þ, [VOL]þ, and [H2VOL2]2þ; vanadium(V) species [HVO2L]þ and VO2L; and the mix-valence vanadium(IV,V) species [H2V2O3L]4þ, [V2 O3L]2þ, [OHV2O3L]þ, (OH)2V2O3L, (OH)3V2O3L, [HV2O3L2]2þ, [V2O3L2]þ, and OHV2O3L2, whose stability constants pqrs were determined according to the general reaction p Hþþq VO2þþr VOþ 2 þs L ! HpðVOÞqðVO2ÞqLð pþ2qþr sÞ r . Selected structural parameters of some complexes formed in solution were determined using ab initio methods. |
| URI: | http://hdl.handle.net/10872/10375 |
| ISSN: | 1029-0389 |
| Appears in Collections: | Artículos Publicados |
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