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Universitat de Barcelona

1. Casanovas Bayo, Berta. Compostos de coordinació magnètics i/o luminescents derivats d'elements 3d o 4f: Cercant sistemes multipropietat.

Degree: Departament de Química Inorgànica i Orgànica, 2018, Universitat de Barcelona

The aim of this work is to obtain molecular materials that display one or more physical properties such as magnetism, luminescence and/or chirality. Based on coordination chemistry, we have synthesised new compounds with transition metals or with lanthanide trivalent ions (Ln(III)). The physical properties observed in these compounds arise from the metals, from the ligands coordinated to them or from the metal-ligand cooperativity. We have isolated a MnII2MnIII6 compound using salicyladoxime (H2-salox) and azide (N3-) ligands. Magnetic study of this compound reveals a spin ground state of S = 17, the highest possible for this system. The stabilization of this maximum magnetic ground state is due to the dominance of the ferromagnetic exchange between the Mn(II) and Mn(III) through the N3- ligand. Continuing with manganese, a series of {Mn3O(R-salox)3}- based compounds have been obtained using H2-salox, H2-3-Me-salox, H2-Me-salox or H2-Et-salox ligands and the sodium or caesium 9-anthracenecarboxilate (9-AC) salt. A structural dependence is observed when using H2-salox or H2-3-Me-salox with Na+ or Cs+ carboxylate salt. The magnetic properties of the obtained compounds are strongly dependent on the R- group of the R-salox ligand. Luminescence properties have been observed in these compounds. On the other hand, several new Ln(III) coordination complexes have been obtained combining different carboxylic acids [H-9-AC, 2-fluorobenzoic acid (H- 2-FBz), R/S-2-(6-methoxy-2-naphthyl)propionic acid (R- o S-HL1) or R/S- phenylpropionic acid] with different N-donor secondary ligands (2,2’- bipyridine, 1,10’-phenanthroline or 2,2’:6’,2’’-terpyridine). Under these conditions, we have obtained compounds [Ln2(9-AC)6(bpy)2] (Ln(III) = Nd, Er and Yb), [Ln2(9-AC)6(phen)2] (Ln(III) = Er and Yb), [Ln(9- AC)3(terpy)(H2O)]·H2O·DMF (Ln(III) = Er and Yb), [Ln2(2-FBz)4(NO3)2(phen)2] (Ln(III) = Nd, Dy and Er), [Yb2(2-FBz)6(phen)2] and [Ln2(2-FBz)6(terpy)2]·H-2- FBz·H2O (Ln = Nd, Dy, Er and Yb) which display magnetic and luminescent properties. The use of pure enantiomeric species of R- o S-HL1 or R- o S-HL2 led to the isolation of magnetic, luminescence and chiral compounds [Ln2(R- L1)6(phen)2]·3DMF·H2O and [Ln2(S-L1)6(phen)2]·3DMF·H2O (Ln(III) = Nd and Dy), [Nd2(R-L2)6(phen)2]·2.5S-HL2, [Nd2(S-L2)6(phen)2]·2.5S-HL2 and [Yb2(R- L2)4(NO3)2(phen)2]·2R-HL2 and [Yb2(R-L2)4(NO3)2(phen)2]·2R-HL2. Moreover, chiral compounds [Eu2(R-L1)6(phen)2]·3DMF·H2O, [Eu2(S- L1)6(phen)2]·3DMF·H2O and [Ln2(R-L2)6(phen)2]·2.5S-HL2 [Ln2(S-L2)6(phen)2]·2.5S- HL2 (Ln(III) = Eu and Tb) display Circularly Polarized Luminescence. Advisors/Committee Members: [email protected] (authoremail), false (authoremailshow), Vicente Castillo, Ramón (director), Salah El Fallah, Mohamed (director), Vicente Castillo, Ramón (tutor), true (authorsendemail).

Subjects/Keywords: Compostos de coordinació; Compuestos de coordinación; Coordination compounds; Magnetisme; Magnetismo; Magnetism; Luminescència; Luminiscencia; Luminiscence; Quiralitat; Quiralidad; Chirality; Ciències Experimentals i Matemàtiques; 546

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APA (6th Edition):

Casanovas Bayo, B. (2018). Compostos de coordinació magnètics i/o luminescents derivats d'elements 3d o 4f: Cercant sistemes multipropietat. (Thesis). Universitat de Barcelona. Retrieved from http://hdl.handle.net/10803/586178

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16th Edition):

Casanovas Bayo, Berta. “Compostos de coordinació magnètics i/o luminescents derivats d'elements 3d o 4f: Cercant sistemes multipropietat.” 2018. Thesis, Universitat de Barcelona. Accessed December 09, 2018. http://hdl.handle.net/10803/586178.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7th Edition):

Casanovas Bayo, Berta. “Compostos de coordinació magnètics i/o luminescents derivats d'elements 3d o 4f: Cercant sistemes multipropietat.” 2018. Web. 09 Dec 2018.

Vancouver:

Casanovas Bayo B. Compostos de coordinació magnètics i/o luminescents derivats d'elements 3d o 4f: Cercant sistemes multipropietat. [Internet] [Thesis]. Universitat de Barcelona; 2018. [cited 2018 Dec 09]. Available from: http://hdl.handle.net/10803/586178.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Casanovas Bayo B. Compostos de coordinació magnètics i/o luminescents derivats d'elements 3d o 4f: Cercant sistemes multipropietat. [Thesis]. Universitat de Barcelona; 2018. Available from: http://hdl.handle.net/10803/586178

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

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