A5026357315- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Magnetism in coordination complexes
- Lanthanide and Transition Metal Complexes
- Metal complexes synthesis and properties
- Metal-Organic Frameworks: Synthesis and Applications
- Metal-Catalyzed Oxygenation Mechanisms
- Crystallography and molecular interactions
- Electron Spin Resonance Studies
- Advanced NMR Techniques and Applications
- Organic and Molecular Conductors Research
- Porphyrin and Phthalocyanine Chemistry
- Supramolecular Chemistry and Complexes
- Metalloenzymes and iron-sulfur proteins
- Polyoxometalates: Synthesis and Applications
- Covalent Organic Framework Applications
- Organometallic Complex Synthesis and Catalysis
- DNA and Nucleic Acid Chemistry
- Chemical Synthesis and Characterization
- Virtual Reality Applications and Impacts
- Crustacean biology and ecology
- Advanced Chemical Physics Studies
- Nanocluster Synthesis and Applications
- Nanoplatforms for cancer theranostics
- CO2 Reduction Techniques and Catalysts
Universitat de Barcelona
2016-2025
Institut de Nanociència i Nanotecnologia de la Universitat de Barcelona
2017-2025
Parc Científic de la Universitat de València
2020-2024
Universitat de València
1991-2021
FC Barcelona
2015-2020
Instituto de Física Corpuscular
2020
The first {Mn31} cluster (1) has been prepared from carboxylate ions and the chelating/bridging ligand α-methyl-2-pyridine-methanol. Compound 1 possesses a unique nanosized structural topology with one of largest energy barriers reported to-date for high-nuclearity 3d-metal clusters. Single-crystal magnetic hysteresis studies reveal presence loops below 5 K, highest temperatures which molecular observed 3d-based SMMs.
Comparison between two series of [Ni<sup>II</sup>Ln<sup>III</sup>] and [Zn<sup>II</sup>Ln<sup>III</sup>] dimers reveals lower intermolecular interactions for the square-planar Ni<sup>II</sup>derivatives that favour an induced SIM response. Some unusual Ce<sup>III</sup>, Nd<sup>III</sup>and Yb<sup>III</sup>SIMs are reported.
The strategic design and synthesis of two isomeric CuII complexes, [CuLA] [CuLB], asymmetrically dicondensed N2O3-donor Schiff-base ligands (where H2LA H2LB are N-salicylidene-N′-3-methoxysalicylidenepropane-1,2-diamine N-3-methoxysalicylidene-N′-salicylidenepropane-1,2-diamine, respectively) have been accomplished via a convenient template method. These complexes used as metalloligands for the three pairs Cu–Ln [CuL(μ-NO3)Ln(NO3)2(H2O)]·CH3CN (for 1A–3A, L = LA, 1B–3B, LB Ln Gd, Tb, Dy,...
Hydroxide-bridged FeIII4LnIII2 clusters having the general formula [Fe4Ln2(μ3-OH)2(mdea)6(SCN)2(NO3)2(H2O)2]·4H2O·2MeCN {Ln = Y (1), Dy (2), mdea N-methyldiethanolamine} were synthesized and magnetically characterized. The thermal relaxation of magnetization for 2 diluted FeIII4DyIIIYIII complex 3 (with without applied field) has been analyzed. sample shows a dominant QTM at low temperatures that can be removed with 0.15 T dc field. Both show moderately high Ueff barriers exhibit hysteresis...
The reaction between two equivalents of the Schiff base ligands N,N'-bis(3-methoxysalicylidene)ethylenediamine (H2L1) or enantiopure N,N'-bis(3-methoxysalicylidene)cyclohexane-1,2-diamine (H2L2) with one equivalent Ce(NO3)3·6H2O in presence a bulky counteranion leads to formation chiral metal-organic frameworks (MOFs) whose channels encapsulate counteranion, leading compounds structural formulas {[Ce(NO3)2(L1)2]X·H2O}n, where X = ClO4- (1), PF6- (2), BF4- (3), and {[Ce(NO3)2(L2)2]X·CH3CN}n,...
Four new heterometallic Cu(<sc>ii</sc>)–Mn(<sc>ii</sc>) complexes have been synthesised by using a Cu(<sc>ii</sc>) complex of an unsymmetrical Schiff base as O<sub>3</sub> donor ligand; one which is catalytically active towards catecholase and phenoxazinone synthase activities.
A possible relation between the value of axial Zero Field Splitting and occurrence field-induced slow magnetic relaxation has been established for a new gadolinium(<sc>iii</sc>) compound.
The employment of three structurally related Schiff bases H2L1, H2L2, and H3L3 with zinc lanthanide salts under various reaction conditions, gave four families compounds formulated as [ZnII2LnIII2(L1)4(EtOH)6][ClO4]2 (1–3), [ZnII5Ln(OH)(L1)6(H2O)] (4–6), [ZnII4LnIII2(OH)2(L2)4 (OAc)2(NO3)2(DMF)3]·DMF (7–9), [ZnII2LnIII2(L3)2(NO3)2(CO3)2(CH3OH)2] (10–12) robust novel topologies. Synthetic aspects are discussed. A comprehensive topological analysis all reported ZnII/LnIII CCs a core nuclearity...
Catalytic efficiency of heterometallic Cu(<sc>ii</sc>)–Mn(<sc>ii</sc>) complexes towards oxidation 3,5-DTBC to 3,5-DTBQ is dependent on the basicity and steric requirement anionic co-ligands.
The organic chelating and bridging ligands 9,10-phenanthrenedione-9-oxime (phenoxH) 9,10-phenanthrenedione-9,10-dioxime (phendoxH2) were synthesized subsequently employed for the first time in heterometallic 3d/4f-metal cluster chemistry. general reaction between CuCl2·2H2O, LnCl3·6H2O, phenoxH, NEt3 a 1:2:2:4 molar ratio, solvent mixture comprising MeCN MeOH, afforded brown crystals of new family [Cu3LnCl3(phenox)6(MeOH)3] clusters (Ln = Gd (1), Tb (2), Dy (3)) that possess an unprecedented...
Abstract Three new hetero‐metallic copper(II)‐manganese(II) complexes, [(CuL) 2 Mn 3 (C 6 H 5 CO ) ] ( 1 ), Mn(CH and {[(CuL) Mn(C CH ⋅ 2CH CN} have been synthesized using [CuL] as ‘‘metalloligand’’ (where L=N,N′‐bis(2‐hydroxynaphthyl‐methylidene)‐1,3‐propanediamine). Single‐crystal structural analyses show an almost linear penta‐nuclear structure for complex where a square planar unit is connected to each of the two terminal II ions linear, centrosymmetric [Mn (benzoate) through double...
Field-induced SIM behaviour and remarkable cryomagnetic properties coexist in a well-known oxalato-bridged gadolinium(<sc>iii</sc>)-based 2D MOF.
Three field induced SMMs built from quasi-isotropic cations like CuII and MnII have been characterized, showing that relatively large clusters with quasi-negligible D different ground spin states, S = 3/2, 2 or 4, can also exhibit field-induced slow relaxation of magnetization.
A Ferromagnetically coupled tetranuclear, an antiferromagnetically hexanuclear and a mononuclear Ni(II) complex of new unsymmetrical Schiff base ligands derived from 1,3-diamino-2-propanol have been obtained with slight change in the carbonyl compounds.
New chiral FeIII4 star-shaped complexes have been synthesized starting from enantiomerically pure Schiff bases and chiroptically magnetically characterized. The structural magnetic properties of the complete family 40 Fe4 reported in literature analyzed search for synthetic magnetostructural correlations.
A series of tetranuclear Cu2IILn2III (LnIII from LaIII to YbIII), double-stranded metallohelicates have been synthesized using a bis-bidentate flexible ligand obtained by condensing o-vanillin with 4,4′-oxydianiline. The complexes exhibit variety LnIII environments and decreasing coordination number along the several nitrato modes proved structural determination (1La), SmIII (4Sm), GdIII (5Gd), ErIII (9Er), YbIII (10Yb) derivatives. other members family (2Ce, 3Pr, 6Tb, 7Dy, 8Ho)...
Among three rare types of Cu II –Ln III (Ln = Gd, Tb, and Dy) complexes an unsymmetrical N 2 O 3 donor ligand, only the Tb derivative shows SMM behavior under a dc field. Theoretical calculations explain magnetic complexes.
A family of discrete dinuclear complexes [MIILnIII] (M = Cu, Ni and Ln Ce, Gd, Tb, Dy, Er, Yb) has been synthesized from the use compartmental Schiff base ligand H4L (3,3′-((1E,1′E)-(ethane-1,2-diylbis(azaneylylidene)) bis(methaneylylidene))bis(benzene-1,2-diol)), obtained condensation ethylenediamine 2,3-dihydroxybenzaldehyde. All have structurally magnetically characterized. The dynamic magnetic measurements show that [CuIILnIII] [NiIILnIII] derivatives exhibit ac response as a function...
The systematic reactions of a family tetradentate pyridyl/imine and quinolyl/imine racemic or enantiopure Schiff bases with Ni(NO3 )2 Ni(ClO4 in the presence sodium azide yielded, as function starting racemic, chiral achiral base, set chiral, meso complexes. In all cases, compounds consist two NiII cations linked by double azido bridge its end-on coordination mode. All dimers exhibit mesocate supramolecular structure one them, unprecedented mix helicate 2:1 ratio. transition from to...
This article reports the syntheses, characterization, structural description, together with magnetic and spectroscopic properties of two isostructural molecular magnets based on chiral ligand N,N′-bis((1,2-diphenyl-(pyridine-2-yl)methylene)-(R,R/S,S)-ethane-1,2-diamine), L1, general formula [Ln2(RR-L1)2(Cl6)]·MeOH·1.5H2O, (Ln = Ce (1) or Nd (2)). Multifrequency electron paramagnetic resonance (EPR), cantilever torque magnetometry (CTM) measurements, ab initio calculations allowed us to...
Chiral clusters with MnIIMnNaI and the new MnIIMnNa cores have been synthesised employing enantiomerically pure Schiff bases halide ligands. The compounds characterized by electronic circular dichroism (ECD) magnetic susceptibility.
The 1:1 reactions between hydrated lanthanide(III) nitrates and triethanolamine (teaH3) in MeOH, the absence of external bases, have provided access to dinuclear complexes [Ln2(NO3)4(teaH2)2] (Ln = Pr, 1; Ln Gd, 2; Tb, 3; Dy, 4; Ho, 5) containing singly deprotonated form ligand. Use excess ligand same solvent gives mononuclear neutral representative compound [Pr(NO3)(teaH3)2](NO3)2 (6) was characterized. structures isomorphous 1∙2MeOH, 2∙2MeOH 4∙2MeOH were solved by single-crystal X-ray...
The initial use of anils, i.e. bidentate Schiff bases derived from the condensation anilines with salicylaldehyde or its derivatives, in 4f-metal chemistry is described. 1 : reactions between Ln(NO3)3·xH2O (Ln = lanthanide) Y(NO3)3·6H2O and N-(5-bromosalicylidene)aniline (5BrsalanH) MeCN has provided access to complexes [Ln(NO3)3(5BrsalanH)2(H2O)]·MeCN Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Yb) [Y(NO3)3(5BrsalanH)2(H2O)]·MeCN, respectively, good yields. structures isomorphous Ln Pr(1·MeCN),...
A family of mixed metal MOFs is reported; <bold>NUIG</bold> possess good adsorption capacity for a variety different species, including ions, ibuprophen, CO<sub>2</sub> and CH<sub>4</sub>, while one them exhibits selectivity.
One NiII2MnII3 and two CuII2MnII3 complexes have been synthesized using N 2 O donor ligands. The former complex exhibits spin crossover at K temperature. All the exhibit catecholase-like activities.