Base hydrolysis and aquation of trans-methyl-substituted acidopenta-amminecobalt(III) complexes
Base hydrolysis and aquation of trans-[Co(NH₃)₄(NH₂CH₃)X]²⁺ (where X = Cl, Br and NO3) complexes are reported. Both types of reactions are four to eight times faster than the corresponding reactions for [Co(NH3)5X]2+ complexes. The positive activation entropies of the base hydrolysis for all the stu...
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| Formato: | Articulo |
| Lenguaje: | Inglés |
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1996
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| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/159209 |
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I19-R120-10915-159209 |
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I19-R120-10915-1592092023-10-23T20:46:22Z http://sedici.unlp.edu.ar/handle/10915/159209 Base hydrolysis and aquation of trans-methyl-substituted acidopenta-amminecobalt(III) complexes Benzo, Fabián Massaferro, Adriana Queirolo, Marcelo Sienra, Beatriz Capparelli, Alberto Luis Mártire, Daniel Osvaldo 1996 2023-10-23T13:43:52Z en Química Base hydrolysis aquation reactions activation entropies Base hydrolysis and aquation of trans-[Co(NH₃)₄(NH₂CH₃)X]²⁺ (where X = Cl, Br and NO3) complexes are reported. Both types of reactions are four to eight times faster than the corresponding reactions for [Co(NH3)5X]2+ complexes. The positive activation entropies of the base hydrolysis for all the studied trans-[Co(NH₃)₄(NH₂CH₃)X]²⁺ ions and the stereochemistry of the hydroxo products are indicative of a dissociative conjugate base, Dcb, mechanism. The steric course of the base hydrolysis differs significantly from that of the parent penta-ammines. For the aquation reactions, the activation enthalpies of the trans-methylamine and penta-ammine complexes are similar, while the activation entropies are more positive (or less negative) for the former. These results are interpreted in terms of an Id mechanism. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas Articulo Articulo http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) application/pdf 1915-1921 |
| institution |
Universidad Nacional de La Plata |
| institution_str |
I-19 |
| repository_str |
R-120 |
| collection |
SEDICI (UNLP) |
| language |
Inglés |
| topic |
Química Base hydrolysis aquation reactions activation entropies |
| spellingShingle |
Química Base hydrolysis aquation reactions activation entropies Benzo, Fabián Massaferro, Adriana Queirolo, Marcelo Sienra, Beatriz Capparelli, Alberto Luis Mártire, Daniel Osvaldo Base hydrolysis and aquation of trans-methyl-substituted acidopenta-amminecobalt(III) complexes |
| topic_facet |
Química Base hydrolysis aquation reactions activation entropies |
| description |
Base hydrolysis and aquation of trans-[Co(NH₃)₄(NH₂CH₃)X]²⁺ (where X = Cl, Br and NO3) complexes are reported. Both types of reactions are four to eight times faster than the corresponding reactions for [Co(NH3)5X]2+ complexes. The positive activation entropies of the base hydrolysis for all the studied trans-[Co(NH₃)₄(NH₂CH₃)X]²⁺ ions and the stereochemistry of the hydroxo products are indicative of a dissociative conjugate base, Dcb, mechanism. The steric course of the base hydrolysis differs significantly from that of the parent penta-ammines. For the aquation reactions, the activation enthalpies of the trans-methylamine and penta-ammine complexes are similar, while the activation entropies are more positive (or less negative) for the former. These results are interpreted in terms of an Id mechanism. |
| format |
Articulo Articulo |
| author |
Benzo, Fabián Massaferro, Adriana Queirolo, Marcelo Sienra, Beatriz Capparelli, Alberto Luis Mártire, Daniel Osvaldo |
| author_facet |
Benzo, Fabián Massaferro, Adriana Queirolo, Marcelo Sienra, Beatriz Capparelli, Alberto Luis Mártire, Daniel Osvaldo |
| author_sort |
Benzo, Fabián |
| title |
Base hydrolysis and aquation of trans-methyl-substituted acidopenta-amminecobalt(III) complexes |
| title_short |
Base hydrolysis and aquation of trans-methyl-substituted acidopenta-amminecobalt(III) complexes |
| title_full |
Base hydrolysis and aquation of trans-methyl-substituted acidopenta-amminecobalt(III) complexes |
| title_fullStr |
Base hydrolysis and aquation of trans-methyl-substituted acidopenta-amminecobalt(III) complexes |
| title_full_unstemmed |
Base hydrolysis and aquation of trans-methyl-substituted acidopenta-amminecobalt(III) complexes |
| title_sort |
base hydrolysis and aquation of trans-methyl-substituted acidopenta-amminecobalt(iii) complexes |
| publishDate |
1996 |
| url |
http://sedici.unlp.edu.ar/handle/10915/159209 |
| work_keys_str_mv |
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