Dinitrogen Binding at a Trititanium Chloride Complex and Its Conversion to Ammonia under Ambient Conditions.
Reaction of [TiCp*Cl-3] (Cp*=eta(5)-C5Me5) with one equivalent of magnesium in tetrahydrofuran at room temperature affords the paramagnetic trinuclear complex [{TiCp*(mu-Cl)}(3)(mu(3)-Cl)], which reacts with dinitrogen under ambient conditions to give the diamagnetic derivative [{TiCp*(mu-Cl)}(3)(mu...
| Autores: | , , , , |
|---|---|
| Tipo de recurso: | artículo |
| Fecha de publicación: | 2022 |
| País: | España |
| Institución: | Universidad de Alcalá (UAH) |
| Repositorio: | e_Buah Biblioteca Digital Universidad de Alcalá |
| Idioma: | inglés |
| OAI Identifier: | oai:ebuah.uah.es:10017/53090 |
| Acceso en línea: | http://hdl.handle.net/10017/53090 https://dx.doi.org/10.1002/anie.202204544 |
| Access Level: | acceso abierto |
| Palabra clave: | Cluster compounds Density functional calculations Nitrogen fixation reduction titanium Química Chemistry |
| Sumario: | Reaction of [TiCp*Cl-3] (Cp*=eta(5)-C5Me5) with one equivalent of magnesium in tetrahydrofuran at room temperature affords the paramagnetic trinuclear complex [{TiCp*(mu-Cl)}(3)(mu(3)-Cl)], which reacts with dinitrogen under ambient conditions to give the diamagnetic derivative [{TiCp*(mu-Cl)}(3)(mu(3)-eta(1) : eta(2) : eta(2)-N-2)] and the titanium(III) dimer [{TiCp*Cl(mu-Cl)}(2)]. The structure of the trinuclear mixed-valence complexes has been studied by experimental and theoretical methods and the latter compound represents the first well-defined example of the mu(3)-eta(1) : eta(2) : eta(2) coordination mode of the dinitrogen molecule. The reaction of [{TiCp*(mu-Cl)}(3)(mu(3)-eta(1) : eta(2) : eta(2)-N-2)] with excess HCl in tetrahydrofuran results in clean NH4Cl formation with regeneration of the starting material [TiCp*Cl-3]. Therefore, a cyclic ammonia synthesis under ambient conditions can be envisioned by alternating N-2/HCl atmospheres in a [TiCp*Cl-3]/Mg(excess) reaction mixture in tetrahydrofuran. |
|---|