Person: Jiménez Aparicio, Reyes
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First Name
Reyes
Last Name
Jiménez Aparicio
Affiliation
Universidad Complutense de Madrid
Faculty / Institute
Ciencias Químicas
Department
Química Inorgánica
Area
Química Inorgánica
Identifiers
20 results
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Item Trapping Ag(I) ions by a Pd8 metallacrown molecule to form an unusual nonanuclear AgPd8 cation(Inorganica Chimica Acta, 2019) Calleja, Fernando B.; Cortijo Montes, Miguel; Perles Hernáez, Josefina; Herrero Domínguez, Santiago; Jiménez Aparicio, ReyesThe {[Pd(µ-SC6F5)(µ-dppm)Pd](µ-SC6F5)}4 (dppm = methanediylbis(diphenylphosphane)) (Pd8) metallacrown traps Ag(I) cations giving {Ag[Pd(µ3-SC6F5)(µ-dppm)Pd]4(µ-SC6F5)4}(X) (X = SO3CF3− (AgPd8a), SbF6− (AgPd8b) and ClO4− (AgPd8c)) and {Ag[Pd(µ3-SC6F5)(µ-dppm)Pd]4(µ-SC6F5)4}2[Pt(C6F5)4] (AgPd8d). The insertion of silver increases significantly the stability of the cluster that is stable in solution even in the presence of light, because of the macrocyclic effectItem Tetracarbonatodiruthenium Fragments and Lanthanide(III) Ions as Building Blocks to Construct 2D Coordination Polymers(Polymers, 2019) Gutiérrez Martín, Daniel; Cortijo Montes, Miguel; Martín Humanes, Álvaro; González Prieto, Rodrigo; Delgado Martínez, Patricia; Herrero Domínguez, Santiago; Priego Bermejo, José Luis; Jiménez Aparicio, ReyesTwo-dimensional coordination polymers of [Pr(DMSO)2(OH2)3][Ru2(CO3)4(DMSO)(OH2)]·5H2O (Prα) and [Ln(OH2)5][Ru2(CO3)4(DMSO)]·xH2O (Ln = Sm (Smβ), Gd (Gdβ)) formulae have been obtained by reaction of the corresponding Ln(NO3)3·6H2O dissolved in dimethyl sulphoxide (DMSO) and K3[Ru2(CO3)4]·4H2O dissolved in water. Some DMSO molecules are coordinated to the metal atoms reducing the possibilities of connection between the [Ru2(CO3)4]3− and Ln3+ building blocks giving rise to the formation of two-dimensional networks. The size of the Ln3+ ion and the synthetic method seem to have an important influence in the type of two-dimensional structure obtained. Slow diffusion of the reagents gives rise to Prα that forms a 2D net that is built by Ln3+ ions as triconnected nodes and two types of Ru25+ units as bi- and tetraconnected nodes with (2-c)(3-c)2(4-c) stoichiometry (α structure). An analogous synthetic procedure gives Smβ and Gdβ that display a grid-like structure, (2-c)2(4-c)2, formed by biconnected Ln3+ ions and two types of tetraconnected Ru25+ fragments (β structure). The magnetic properties of these compounds are basically explained as the sum of the individual contributions of diruthenium and lanthanide species, although canted ferrimagnetism or weak ferromagnetism are observed at low temperature.Item Microwave and solvothermal methods for the synthesis of nickel and ruthenium complexes with 9-anthracene carboxylate ligand(Inorganica Chimica Acta, 2015) Cortijo Montes, Miguel; Delgado-Martínez, Patricia; González Prieto, Rodrigo; Herrero Domínguez, Santiago; Jiménez Aparicio, Reyes; Perles Hernáez, Josefina; Priego Bermejo, José Luis; M.R. TorresMicrowave and solvothermal activation processes have been explored as tools for the preparation of various nickel and ruthenium complexes. Different reaction conditions are tested using ethanol or water as solvents. Three nickel derivatives, [Ni(9-atc)2(OH2)2(py)2]·2EtOH (1), [Ni2(9-atc)4(OH2)(py)4]·2H2O (2·2H2O), and [Ni2(9-atc)4(py)2] (3), and two diruthenium compounds, {[Ru2Cl(9-atc)4]·2H2O}n (4) and [Ru2(9-atc)4(EtOH)2]·2EtOH (5), are obtained. The crystal structure determination of complexes 1-3 and 5 is also described. Compound 1 displays a 1D extended supramolecular structure with hydrogen bonds involving crystallization solvent molecules. Compound 2 is dimetallic, and both nickel centers show an octahedral coordination environment, whereas complexes 3 and 5 display a typical carboxylate-bridged paddlewheel-type structure with two metal atoms connected by four bridging carboxylate ligands. All compounds show weak antiferromagnetic interactions except 3, where a strong intra-dimer antiferromagnetic coupling is observed. Compound 4 also shows a strong zero field splitting.Item Heteronuclear Dirhodium-Gold Anionic Complexes: Polymeric Chains and Discrete Units(Polymers, 2020) Fernández Bartolomé, Estefanía; Paula Cruz; Abad Galán, Laura; Cortijo Montes, Miguel; Patricia Delgado-Martínez; González Prieto, Rodrigo; Priego Bermejo, José Luis; Jiménez Aparicio, ReyesIn this article, we report on the synthesis and characterization of the tetracarboxylatodirhodium(II) complexes [Rh2(μ–O2CCH2OMe)4(THF)2] (1) and [Rh2(μ–O2CC6H4–p–CMe3)4(OH2)2] (2) by metathesis reaction of [Rh2(μ–O2CMe)4] with the corresponding ligand acting also as the reaction solvent. The reaction of the corresponding tetracarboxylato precursor, [Rh2(μ–O2CR)4], with PPh4[Au(CN)2] at room temperature, yielded the one-dimensional polymers (PPh4)n[Rh2(μ–O2CR)4Au(CN)2]n (R = Me (3), CH2OMe (4), CH2OEt (5)) and the non-polymeric compounds (PPh4)2{Rh2(μ–O2CR)4[Au(CN)2]2} (R = CMe3 (6), C6H4–p–CMe3 (7)). The structural characterization of 1, 3·2CH2Cl2, 4·3CH2Cl2, 5, 6, and 7·2OCMe2 is also provided with a detailed description of their crystal structures and intermolecular interactions. The polymeric compounds 3·2CH2Cl2, 4·3CH2Cl2, and 5 show wavy chains with Rh–Au–Rh and Rh–N–C angles in the ranges 177.18°–178.69° and 163.0°–170.4°, respectively. A comparative study with related rhodium-silver complexes previously reported indicates no significant influence of the gold or silver atoms in the solid-state arrangement of these kinds of complexes.- Project number: 52
Item I.amAble: El aprendizaje en ciencias al servicio de la inclusión educativa(2019) Herrero Domínguez, Santiago; Corrales Castellanos, María Eugenia; Sobrino Díaz, María Lourdes; Cilleros Prados, Olga; Barba Fernández, Carmen; Azor Lafarga, Alberto Eduardo; Hernández Díaz, María Yolanda; Martínez del Pozo, Álvaro; Ranchal Sánchez, Rocío; Maestre Varea, David; Méndez Pozo, Gonzalo Rubén; Gervás Gómez-Navarro, Pablo; Pastor Gil, Lorena; Taravillo Corralo, Mercedes; Guerrero Martínez, Andrés; Sánchez Benítez, Francisco Javier; Martín Conde, María; Priego Bermejo, José Luis; González Prieto, Rodrigo; Jiménez Aparicio, Reyes; Álvarez Serrano, Inmaculada; Cortés Gil, Raquel; Osío Barcina, José de Jesús; Mancheño Real, María José; Arribas Fernández, Paula; Lobato Fernández, Álvaro; Sánchez Arroyo, Antonio José; Torrecilla Manresa, Sofía; Cárdenas Bonett, Marlón Félix; Desvoyes, Benedicte; Bárcena Espelleta, Araceli; Nacenta Torres, Pablo; Rubio Lago, Luis; Bautista Blasco, Susana; Julián Cortés, Alvaro; Arancibia Llaneza, Julieta Noelia; Lombraña Pascual, Rodrigo; Catalán Torrecilla, Cristina; Gutiérrez Franco, Yanna María; Mártínez Ruiz, María PalomaI.amAble es un proyecto que nació con una filosofía centrada en la utilización de acciones de solidaridad como método de aprendizaje. Se diseñan y organizan talleres científicos inclusivos para realizarlos en parejas formadas por personas con discapacidad cognitiva y de educación secundaria ordinaria. Se pretende aprender a la vez que se da un servicio a la universidad y a la sociedad, y ese es el espíritu que se ha seguido manteniendo durante esta tercera edición del curso 2018-2019. Item One‐Dimensional [Ni(O2CR)2(NN)x] Polymers: Structural, Magnetic, and Density Functional Theory Studies(ChemPlusChem, 2014) Cortijo Montes, Miguel; Herrero Domínguez, Santiago; Belén Jerez; Jiménez Aparicio, Reyes; Perles Hernáez, Josefina; Priego Bermejo, José Luis; Tortajada Pérez, JoséFive nickel complexes, [Ni2(3,4,5-tmb)4(4,4 ′-bpy)] (1), [Ni2(2-ntc)4(4,4 ′-bpy)] (2), [Ni(9-atc)2(4,4 ′-bpy)] (3), [Ni(3,4,5-tmb)2(t-bpee) ] (4), and [Ni2(2-ntc)4(t-bpee)2] (5) (3,4,5-tmb=3,4,5-trimethoxybenzoate; 2-ntc=2-naphthalenecarboxylate; 9-atc=9-anthracenecarboxylate; 4,4 ′-bpy=4,4 ′-bipyridine; t-bpee=trans-1,2-bis(4-pyridyl)ethylene), are prepared. They are characterized by elemental analysis, IR spectroscopy, thermogravimetric analysis, and single-crystal and powder X-ray diffraction. 1 and 2 form linear chains of paddlewheel units joined by 4,4 ′-bpy ligands; 3 and 4 display zigzag chains formed by cis-bis(chelate) Ni(O2CR)2 units joined by 4,4 ′-bpy and t-bpee, respectively; and the structure of 5 consists of double chains. The magnetic behavior of the compounds is also studied, and DFT calculations using the broken-symmetry approximation are performed to gain a better understanding of the strong antiferromagnetism found in 1. © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.Item Tuning of Adsorption and Magnetic Properties in a Series of Self-Templated Isostructural Ni(II) Metal−Organic Frameworks(Crystal Growth and Design, 2013) Cortijo Montes, Miguel; Herrero Domínguez, Santiago; Jiménez Aparicio, Reyes; Perles Hernáez, Josefina; Priego Bermejo, José Luis; Javier TorrobaAn isomorphous series of five metal–organic frameworks of formula [Ni4(O2CR)(OH)2(4-pyc)5] [4-pyc = 4-pyridinecarboxylate or isonicotinate; R = C6H5 (1), 4-OMe-C6H4 (2), 2,6-(OMe)2-C6H3 (3), 3,5-(OMe)2-C6H3 (4), 3,4,5-(OMe)3-C6H2 (5)] were obtained by solvothermal reactions. These compounds display a three-dimensional framework where the nickel atoms are coordinated to the hydroxyde anions and two different organic ligands: isonicotinate and phenylcarboxylate. Both hydroxyde (μ3-OH) and phenylcarboxylate (μ3-1κO,2κO,3κO′) ligands are coordinated to nickel atoms of the same secondary building unit (SBU). The SBU consists of four edge-sharing NiA6 octahedra (A = O, N). The isonicotinate ligands, however, act as linkers between SBUs displaying three different coordination modes: μ-1κN,2κO; μ3-1κN,2κO,3κO′; and μ4-1κN,2:3κ2O,4κO′. Nitrogen adsorption measurements were done to obtain textural parameters of these microporous networks. Micropore size distributions indicate cylindrical pores with diameters of approximately 0.80 nm. The values of Brunauer–Emmett–Teller surface areas (SBET) obtained are in the range of 382–488 m2/g, and the micropore volumes are between 0.13 cm3/g and 0.19 cm3/g. Both parameters are influenced by the substitution grade and position of the methoxy groups of the phenylcarboxylate ligand. The magnetic properties, which also depend on the arylcarboxylate ligands, vary from compound 1 (with only antiferromagnetic interactions) to compound 5, which shows a spin glass behavior (Tg = 15 K).Item Linear One-Dimensional Coordination Polymers Constructed by Dirhodium Paddlewheel and Tetracyanido-Metallate Building Blocks(Crystals, 2019) Prior, David; Cortijo Montes, Miguel; González Prieto, Rodrigo; Herrero Domínguez, Santiago; Jiménez Aparicio, Reyes; Perles Hernáez, Josefina; Priego Bermejo, José LuisIn this article, we describe the preparation of anionic heteronuclear one-dimensional coordination polymers made by dirhodium paddlewheels and tetracyanido-metallatate building blocks. A series of complexes of (PPh4)2n[{Rh2(µ-O2CCH3)4}{M(CN)4}]n (M = Ni (1), Pd (2), Pt (3)) formulae were obtained by reaction of [Rh2(μ-O2CCH3)4] with (PPh4)2[M(CN)4] in a 1:1 or 2:1 ratio. Crystals of 1−3 suitable for single crystal X-ray diffraction were grown by slow diffusion of a dichloromethane solution of the dirhodium complex into a chloroform solution of the corresponding tetracyanido–metallatate salt. Compounds 1 and 2 are isostructural and crystallize in the triclinic P-1 space group, while compound 3 crystallizes in the monoclinic P21/n space group. A detailed description of the structures is presented, including the analysis of the packing of anionic chains and PPh4+ cations.Item Synthesis of Ru2Br(μ-O2CC6H4–R)4 (R = o-Me, m-Me, p-Me) Using Microwave Activation: Structural and Magnetic Properties(Inorganics, 2014) Delgado Martínez, Patricia; Elvira Bravo, Alejandra; González Prieto, Rodrigo; Priego Bermejo, José Luis; Jiménez Aparicio, Reyes; Torres, María RosarioNew bromidotetracarboxylatodiruthenium(II,III) compounds of the type [Ru2Br(μ-O2CC6H4–R)4]n [R = o-Me (1), m-Me (2), p-Me (3)] have been prepared using microwave-assisted methods. Syntheses by means of solvothermal and conventional activations have also been carried out to compare different preparation methods. The crystal structure determination of complexes 1–3 is also described. All compounds display a typical carboxylate-bridged paddlewheel-type structure with the metal atoms connected by four bridging carboxylate ligands. The axial bromide ligands connect the dimetallic units giving one-dimensional zigzag chains. The magnetic properties of all compounds have also been analyzed. Weak antiferromagnetic intermolecular interactions mediated by the bromide ligands and an appreciable zero field splitting are calculated in the fits of the magnetic data of these complexes.Item The use of amidinate ligands in paddlewheel diruthenium chemistry(Coordination Chemistry Reviews, 2019) Cortijo Montes, Miguel; González Prieto, Rodrigo; Herrero Domínguez, Santiago; Priego Bermejo, José Luis; Jiménez Aparicio, ReyesThe amidinate anions have been widely used in the formation of dinuclear complexes with paddlewheel structure. The higher donor character of this type of ligands, compared to carboxylate ligands, increases the electronic density of the dimetallic units giving, in the case of ruthenium, stable complexes with a large variety of oxidation states containing Ru24+, Ru25+ and Ru26+ units. Even complexes with Ru22+, Ru23+ and Ru27+ cores have been detected in electrochemical measurements and isolated in some cases. The influence of formamidinate and benzamidinate ligands in the synthesis, characterization, properties and reactivity of metal-metal bonded diruthenium complexes with paddlewheel structure in several oxidation states is considered. A revision of the electronic and magnetic properties of diruthenium complexes and their relationship with the different electronic configurations found in this type of complexes is broadly documented. Additionally, the switching between oxidation states is considered through the discussion of the results obtained by electrochemical measurements. Finally, the most relevant applications of the amidinatodiruthenium complexes are also reviewed.