| dc.contributor |
Speed Castro, Saskia |
|
| dc.creator |
Tubau Ribot, Ànnia |
|
| dc.date |
2019-02-25T16:02:49Z |
|
| dc.date |
2019-02-25T16:02:49Z |
|
| dc.date |
2019-01 |
|
| dc.date.accessioned |
2024-12-16T10:27:18Z |
|
| dc.date.available |
2024-12-16T10:27:18Z |
|
| dc.identifier |
http://hdl.handle.net/2445/128844 |
|
| dc.identifier.uri |
http://fima-docencia.ub.edu:8080/xmlui/handle/123456789/22235 |
|
| dc.description |
Treballs Finals de Grau de Química, Facultat de Química, Universitat de Barcelona, Any: 2019, Tutora: Saskia Speed Castro |
|
| dc.description |
Five compounds have been synthesized in this work: [Co4(μ3-py2C(OH)O)4(4-Br-3-CF3-PhNCN)2 (PhCOO)2] (1), [Co4(μ2-py2C(OH)O)2(μ3-py2C(OCH3)O)2(μ2-4-Cl-PhNCN)2(4-Cl-PhNCN)2] (2), [Co(py2C(OH)O)(py2C(OCH2CH3)O)][NO3]·3H2O (3), [Zn2Tb(μ2-py2C(OCH2CH3)O)3(μ3-py2C(OCH2CH3)O) (NO3) (H2O)][Tb(NO3)5] (4) and [Dy5Co4(py2C(OH)O)4(μ3-py2CO2)4(μ4-py2CO2)2(O)2(H2O)6(NO3)2][NO3]5 (5). The metal ions of the five compounds are connected through oxo-bridges from the Di(2-pyridil) ketone derivatives formed after solvolysis and a posterior deprotonation. In addition the Co(II) atoms of compound 2 are connected by two R-phenylcyanamides in the end-on coordination mode. The magnetic susceptibility measurements were performed for compounds 1, 2, 4 and 5. Compound 1 and 2 exhibit a ferromagnetic coupling between the Co(II) metal ions. Compound 4 shows paramagnetic behaviour and 5 exhibit weak antiferromagnetic coupling between the Dy(II) ions. Compounds 1, 2 and 5 show SMM (Single Molecular Magnet) behaviour. The relaxation time of magnetization hasn’t been calculated. |
|
| dc.format |
57 p. |
|
| dc.format |
application/pdf |
|
| dc.language |
eng |
|
| dc.rights |
cc-by-nc-nd (c) Tubau, 2019 |
|
| dc.rights |
http://creativecommons.org/licenses/by-nc-nd/3.0/es/ |
|
| dc.rights |
info:eu-repo/semantics/openAccess |
|
| dc.source |
Treballs Finals de Grau (TFG) - Química |
|
| dc.subject |
Metalls de terres rares |
|
| dc.subject |
Ferromagnetisme |
|
| dc.subject |
Treballs de fi de grau |
|
| dc.subject |
Rare earth metals |
|
| dc.subject |
Ferromagnetism |
|
| dc.subject |
Bachelor's theses |
|
| dc.title |
Coordination compounds derived from R-phenylcyanamido ligands and cobalt (II) |
|
| dc.title |
Compostos de coordinació derivats de lligands R-fenilcianamida amb cobalt (II) |
|
| dc.type |
info:eu-repo/semantics/bachelorThesis |
|