Antonio Luque - Academia.edu (original) (raw)
Papers by Antonio Luque
Molecules
The present study reports on a 2D lamellar coordination polymer (CP) of {[Zn(µ3-pmdc)(H2O)]·H2O}n... more The present study reports on a 2D lamellar coordination polymer (CP) of {[Zn(µ3-pmdc)(H2O)]·H2O}n formula (pmdc = pyrimidine-4,6-dicarboxylate). This CP is synthesized under an appropriate acid-base reaction between the gently mortared reagents in the solid state through a solvent-free procedure that avoids the presence of concomitant byproducts. The X-ray crystal structure reveals the occurrence of Zn2 entities connected through carboxylate groups of pmdc, which behave as triconnected nodes, giving rise to six-membered ring-based layers that are piled up through hydrogen bonding interactions. In addition to a routine physico-chemical characterization, the thermal evolution of the compound has been studied by combining thermogravimetric and thermodiffractometric data. The photoluminescence properties are characterized in the solid state and the processes governing the spectra are described using time-dependent density-functional theory (TD-DFT) with two different approaches employin...
Magnetochemistry
Herein, we report the magnetic and photoluminescence characterization of coordination polymers (C... more Herein, we report the magnetic and photoluminescence characterization of coordination polymers (CP) built from the combination of lanthanide(III) ions, pyrimidine-4,6-dicarboxylate (pmdc) ligand and a co-ligand with formula {[Dy(μ-pmdc)(μ-ox)0.5(H2O)3]·2H2O}n (1-Dy), {[Dy(μ3-pmdc)(μ-ox)0.5(H2O)2] ~2.33H2O}n (2-Dy), {[Dy2(μ3-pmdc)(μ4-pmdc)(μ-ox)(H2O)3]·5H2O}n (3-Dy), {[Ln(μ3-pmdc)(μ-ox)0.5(H2O)2]·H2O}n (where Ln(III) = Nd (4-Nd), Sm (4-Sm), Eu (4-Eu) and Dy (4-Dy)) and {[Dy(μ4-pmdc)(NO3)(H2O)]·H2O}n (5-Dy). It must be noted the presence of oxalate anion acting as ditopic co-ligand in compounds 1-Dy, 2-Dy, 3-Dy and 4-Ln, whereas in 5-Dy the nitrate anion plays the role of terminal co-ligand. Direct current measurements carried out for the dysprosium-based CPs reveal almost negligible interactions between Dy3+ ions within the crystal structure, which is confirmed by computed values of the exchange parameters J. In addition, alternating current measurements show field-induced single-mol...
Acta Crystallographica Section A Foundations of Crystallography, 2011
Acta Crystallographica Section C Crystal Structure Communications, 1993
Inorganic Chemistry Frontiers, 2015
Solvent-free synthesis under conventional oven and microwave assisted heating to provide multicom... more Solvent-free synthesis under conventional oven and microwave assisted heating to provide multicomponent MOFs.
RSC Adv., 2014
Four types of benchmark MOFs are prepared by using solvent-free reactions under oven heating or m... more Four types of benchmark MOFs are prepared by using solvent-free reactions under oven heating or minute-scale fast microwave heating, obtaining competitive yields and high adsorption performance when compared to conventional synthesis methods.
Crystal Growth & Design, 2015
Journal of the American Chemical Society, 1992
Imines derived from N-(tert-butyloxycarbonyl) (N-Boc) α-amino aldehydes react with alkoxyketenes,... more Imines derived from N-(tert-butyloxycarbonyl) (N-Boc) α-amino aldehydes react with alkoxyketenes, generated from their corresponding acid chlorides and triethylamine, to produce homochiral cis-3-alkoxy-4-(1-aminoalkyl) β-lactams with virtually complete control of diastereoselectivity. In a similar manner, the reaction of phthalimidoacetyl chloride with these imines in the presence of triethylamine afforded the corresponding 3-phthalimido β-lactams as single diastereomers
Thermochimica acta, 1994
Thermal decompositions of three 4-aminopyridinium salts of square-planar inorganic metal (II) 1, ... more Thermal decompositions of three 4-aminopyridinium salts of square-planar inorganic metal (II) 1, 2-dithiooxalato-S, S'complexes,(HC 5 H 6 N 2) 2 [M (S 2 C 2 O 2) 2]· 2H 2 O where M is Ni (II), Pd (II) and Pt (II)(hereafter abbreviated as NIDT4AP, PDDT4AP ...
Acta Crystallographica Section B Structural Science, 1994
Coordination Chemistry Reviews, 2013
ABSTRACT A complete overview of the preparation of metal–carboxylato–nucleobase architectures tha... more ABSTRACT A complete overview of the preparation of metal–carboxylato–nucleobase architectures that range from supramolecular assemblies to 3D porous materials is reported. The basic building units of these materials consist of metal–nucleobase fragments which link together through coordination bonding or by means of supramolecular assembling among the nucleobases anchored to metal centres. In the case of extended systems based on coordination bonds, the connectivity among the metal centres can be achieved through bridging nucleobases and/or by auxiliary organic linkers such as carboxylate and dicarboxylate anions. The latter bridging mode confers to the nucleobases a greater capacity to involve in molecular recognition processes with other biologically relevant species by means of the establishment of non-covalent interactions such as hydrogen bonding and/or π–π stacking among aromatic groups. On the other hand, the geometrical rigidity imposed by several metal–nucleobase fragments and the base pairing interactions through complementary hydrogen bonding, lead to structural restraints that preclude an effective filling of the space, and as a consequence, it favours the growth of tailor-made open-frameworks based either on coordination bonds (MBioFs) or on non-covalent interactions (supraMBioFs).
Acta Crystallographica Section C Crystal Structure Communications, 1991
Molecules
The present study reports on a 2D lamellar coordination polymer (CP) of {[Zn(µ3-pmdc)(H2O)]·H2O}n... more The present study reports on a 2D lamellar coordination polymer (CP) of {[Zn(µ3-pmdc)(H2O)]·H2O}n formula (pmdc = pyrimidine-4,6-dicarboxylate). This CP is synthesized under an appropriate acid-base reaction between the gently mortared reagents in the solid state through a solvent-free procedure that avoids the presence of concomitant byproducts. The X-ray crystal structure reveals the occurrence of Zn2 entities connected through carboxylate groups of pmdc, which behave as triconnected nodes, giving rise to six-membered ring-based layers that are piled up through hydrogen bonding interactions. In addition to a routine physico-chemical characterization, the thermal evolution of the compound has been studied by combining thermogravimetric and thermodiffractometric data. The photoluminescence properties are characterized in the solid state and the processes governing the spectra are described using time-dependent density-functional theory (TD-DFT) with two different approaches employin...
Magnetochemistry
Herein, we report the magnetic and photoluminescence characterization of coordination polymers (C... more Herein, we report the magnetic and photoluminescence characterization of coordination polymers (CP) built from the combination of lanthanide(III) ions, pyrimidine-4,6-dicarboxylate (pmdc) ligand and a co-ligand with formula {[Dy(μ-pmdc)(μ-ox)0.5(H2O)3]·2H2O}n (1-Dy), {[Dy(μ3-pmdc)(μ-ox)0.5(H2O)2] ~2.33H2O}n (2-Dy), {[Dy2(μ3-pmdc)(μ4-pmdc)(μ-ox)(H2O)3]·5H2O}n (3-Dy), {[Ln(μ3-pmdc)(μ-ox)0.5(H2O)2]·H2O}n (where Ln(III) = Nd (4-Nd), Sm (4-Sm), Eu (4-Eu) and Dy (4-Dy)) and {[Dy(μ4-pmdc)(NO3)(H2O)]·H2O}n (5-Dy). It must be noted the presence of oxalate anion acting as ditopic co-ligand in compounds 1-Dy, 2-Dy, 3-Dy and 4-Ln, whereas in 5-Dy the nitrate anion plays the role of terminal co-ligand. Direct current measurements carried out for the dysprosium-based CPs reveal almost negligible interactions between Dy3+ ions within the crystal structure, which is confirmed by computed values of the exchange parameters J. In addition, alternating current measurements show field-induced single-mol...
Acta Crystallographica Section A Foundations of Crystallography, 2011
Acta Crystallographica Section C Crystal Structure Communications, 1993
Inorganic Chemistry Frontiers, 2015
Solvent-free synthesis under conventional oven and microwave assisted heating to provide multicom... more Solvent-free synthesis under conventional oven and microwave assisted heating to provide multicomponent MOFs.
RSC Adv., 2014
Four types of benchmark MOFs are prepared by using solvent-free reactions under oven heating or m... more Four types of benchmark MOFs are prepared by using solvent-free reactions under oven heating or minute-scale fast microwave heating, obtaining competitive yields and high adsorption performance when compared to conventional synthesis methods.
Crystal Growth & Design, 2015
Journal of the American Chemical Society, 1992
Imines derived from N-(tert-butyloxycarbonyl) (N-Boc) α-amino aldehydes react with alkoxyketenes,... more Imines derived from N-(tert-butyloxycarbonyl) (N-Boc) α-amino aldehydes react with alkoxyketenes, generated from their corresponding acid chlorides and triethylamine, to produce homochiral cis-3-alkoxy-4-(1-aminoalkyl) β-lactams with virtually complete control of diastereoselectivity. In a similar manner, the reaction of phthalimidoacetyl chloride with these imines in the presence of triethylamine afforded the corresponding 3-phthalimido β-lactams as single diastereomers
Thermochimica acta, 1994
Thermal decompositions of three 4-aminopyridinium salts of square-planar inorganic metal (II) 1, ... more Thermal decompositions of three 4-aminopyridinium salts of square-planar inorganic metal (II) 1, 2-dithiooxalato-S, S'complexes,(HC 5 H 6 N 2) 2 [M (S 2 C 2 O 2) 2]· 2H 2 O where M is Ni (II), Pd (II) and Pt (II)(hereafter abbreviated as NIDT4AP, PDDT4AP ...
Acta Crystallographica Section B Structural Science, 1994
Coordination Chemistry Reviews, 2013
ABSTRACT A complete overview of the preparation of metal–carboxylato–nucleobase architectures tha... more ABSTRACT A complete overview of the preparation of metal–carboxylato–nucleobase architectures that range from supramolecular assemblies to 3D porous materials is reported. The basic building units of these materials consist of metal–nucleobase fragments which link together through coordination bonding or by means of supramolecular assembling among the nucleobases anchored to metal centres. In the case of extended systems based on coordination bonds, the connectivity among the metal centres can be achieved through bridging nucleobases and/or by auxiliary organic linkers such as carboxylate and dicarboxylate anions. The latter bridging mode confers to the nucleobases a greater capacity to involve in molecular recognition processes with other biologically relevant species by means of the establishment of non-covalent interactions such as hydrogen bonding and/or π–π stacking among aromatic groups. On the other hand, the geometrical rigidity imposed by several metal–nucleobase fragments and the base pairing interactions through complementary hydrogen bonding, lead to structural restraints that preclude an effective filling of the space, and as a consequence, it favours the growth of tailor-made open-frameworks based either on coordination bonds (MBioFs) or on non-covalent interactions (supraMBioFs).
Acta Crystallographica Section C Crystal Structure Communications, 1991