A5082043675- Magnetism in coordination complexes
- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Metal complexes synthesis and properties
- Lanthanide and Transition Metal Complexes
- Metal-Catalyzed Oxygenation Mechanisms
- Metal-Organic Frameworks: Synthesis and Applications
- Porphyrin and Phthalocyanine Chemistry
- Crystallography and molecular interactions
- Crystal structures of chemical compounds
- Electron Spin Resonance Studies
- Oxidative Organic Chemistry Reactions
- Organic and Molecular Conductors Research
- Advanced NMR Techniques and Applications
- Synthesis and Characterization of Heterocyclic Compounds
- Molecular Sensors and Ion Detection
- Inorganic and Organometallic Chemistry
- Electrochemical Analysis and Applications
- Organometallic Compounds Synthesis and Characterization
- Supramolecular Chemistry and Complexes
- DNA and Nucleic Acid Chemistry
- Polyoxometalates: Synthesis and Applications
- Organometallic Complex Synthesis and Catalysis
- Mesoporous Materials and Catalysis
- Thermal and Kinetic Analysis
Parc Científic de la Universitat de València
2012-2024
CCT College Dublin
2024
Universitat de València
2007-2022
Centro Médico Sanitas Valencia
2015-2020
Universitat de Barcelona
1997-2004
University of Neuchâtel
1998-2004
Philipps University of Marburg
1996-1999
University of Bergen
1996-1999
Centre National de la Recherche Scientifique
1997-1998
Université Paris-Sud
1998
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTHigh-TC molecular-based magnets: a ferromagnetic bimetallic chromium(III)-nickel(II) cyanide with TC = 90 KV. Gadet, T. Mallah, I. Castro, M. Verdaguer, and P. VeilletCite this: J. Am. Chem. Soc. 1992, 114, 23, 9213–9214Publication Date (Print):November 1, 1992Publication History Published online1 May 2002Published inissue 1 November 1992https://pubs.acs.org/doi/10.1021/ja00049a078https://doi.org/10.1021/ja00049a078research-articleACS...
The novel mononuclear Co(II) complex cis-[Co(II)(dmphen)(2)(NCS)(2)]·0.25EtOH (1) (dmphen = 2,9-dimethyl-1,10-phenanthroline) features a highly rhombically distorted octahedral environment that is responsible for the strong positive axial and rhombic magnetic anisotropy of high-spin ion (D +98 cm(-1) E +8.4 cm(-1)). Slow relaxation effects were observed 1 in presence dc field, constituting first example field-induced single-molecule magnet behavior six-coordinate with transverse energy barrier.
There is plenty of room at the bottom: A gap in literature molecular nanomagnets has been filled with preparation first mononuclear manganese(III) complex exhibiting a slow relaxation magnetization, that is, species single slow-relaxing, highly anisotropic MnIII ion, as confirmed by very low-temperature micro-SQUID magnetization and high-field EPR spectroscopic measurements (N blue, O red, Mn purple, Cl green). As service to our authors readers, this journal provides supporting information...
Such exciting properties as porosity and single-ion magnetic behavior are merged into a single unique material which affords the first in-depth study of guest-dependent SIM in MOF.
Abstract The concept of “molecular magnetic sponges” was introduced for the first time in 1999 by creative imagination late Olivier Kahn. It refers to exotic spongelike behavior certain molecule‐based materials that undergo a dramatic change their properties upon reversible dehydration/rehydration processes. Here we report unique example manganese(II)–copper(II) mixed‐metal–organic framework formula [Na(H 2 O) 4 ] [Mn {Cu (mpba) (H } 3 ]⋅ 56.5 H O ( 1 ) (mpba= N,N′...
A vast impact on molecular nanoscience can be achieved using simple transition metal complexes as dynamic chemical systems to perform specific and selective tasks under the control of an external stimulus that switches "ON" "OFF" their electronic properties. While interest in single-ion magnets (SIMs) lies potential applications information storage quantum computing, switching slow magnetic relaxation associated with host-guest processes is insufficiently explored. Herein, we report a unique...
This contribution is concerned with the synthesis and characterization of two new iron(II) spin-crossover dinuclear compounds formula [Fe(bpym)(NCSe)2]2 (bpym) (2) [Fe(bt)(NCSe)2]2(bpym) (4), where bpym = 2,2'-bipyrimidine bt 2,2'-bithiazoline. Evidence for a S 2 (high spin, HS) ↔ 0 (low LS) behavior provided by variable-temperature magnetic susceptibility measurements 57Fe Mössbauer spectrometric data. Compound shows only one step which involves 50% ions. The transition very abrupt takes...
Three different types of polynuclear MnII complexes with carboxylate bridges were obtained from the reaction Mn(RCOO)2 2,2'-bipyridine (bpy). Dinuclear [Mn2(μ-RCOO)2(bpy)4](ClO4)2 R = 2-ClPh, 3-ClPh, 4-ClPh, Ph (1−4); trinuclear [Mn3(μ-RCOO)6(bpy)2] 3-ClPh (5, 6), [Mn3(μ-RCOO)6(2,2'-Me2-bpy)2] 4-ClPh (7−9), and 1D [Mn(μ-RCOO)2(bpy)]n (10, 11). [Mn2(μ-PhCOO)2(bpy)4](ClO4)2 (4) [Mn(μ-3-ClPhCOO)2(bpy)]n·nH2O (10) have been characterized by X-ray diffraction. Complex 4 crystallizes in triclinic...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTExchange interaction through a croconato bridge: synthesis, crystal structure, and magnetic properties of (.mu.-croconato)bis[{bis(2-pyridylcarbonyl)amido}copper(II)] trihydrateIsabel Castro, Jorunn Sletten, Juan Faus, Miguel Julve, Yves Journaux, Francesc Lloret, Santiago AlvarezCite this: Inorg. Chem. 1992, 31, 10, 1889–1894Publication Date (Print):May 1, 1992Publication History Published online1 May 2002Published inissue 1...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTOxamidato complexes. 3. A study of the formation homo- and heteropolymetallic Cu(II)H2apoxM(II) complexes (H2apox = N,N'-bis(3-aminopropyl)oxamide; M(II) Mn, Co, Ni, Cu, Zn, Cd). Synthesis crystal structure [Cu2(apox)(NCO)2]Francesc Lloret, Miguel Julve, Juan Faus, Rafael Ruiz, Isabel Castro, Miquel Mollar, Michele Philoche-LevisallesCite this: Inorg. Chem. 1992, 31, 5, 784–791Publication Date (Print):March 1, 1992Publication History Published...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTOxamidato complexes. 5. Influence of the steric constraints on complex formation between copper(II) and N,N'-(alkyl-substituted)oxamides. Synthesis crystal structure [Cu2(mapox)(N3)2]n (H2mapox = N,N'-bis([3-(methylamino)propyl]oxamide)Francesc Lloret, Miguel Julve, Jose Antonio Real, Juan Faus, Rafael Ruiz, Miquel Mollar, Isabel Castro, Claudette BoisCite this: Inorg. Chem. 1992, 31, 13, 2956–2961Publication Date (Print):June 1, 1992Publication...
The coordination chemistry of the 2,3-quinoxalinediolate ligand with different lanthanide(III) ions in basic media air affords a new family carbonato-bridged M2III compounds (M = Pr, Gd and Dy), Dy2III analogue exhibiting slow magnetic relaxation behaviour typical single-molecule magnets.
Two mononuclear cobalt(II) compounds of formula [Co(dmphen)2(OOCPh)]ClO4·1/2H2O·1/2CH3OH (1) and [Co(dmbipy)2(OOCPh)]ClO4 (2) (dmphen = 2,9-dimethyl-1,10-phenanthroline, dmbipy 6,6'-dimethyl-2,2'-bipyridine HOOCPh benzoic acid) are prepared magnetostructurally investigated. Each ion is six-coordinate with a distorted octahedral CoN4O2 environment. The complex cations interlinked leading to supramolecular chains pairs that grow along the crystallographic c-axis racemic mixtures (Δ,Λ)-Co...
A series of four-coordinate square-planar nickel(II) complexes o-phenylenebis(N'-methyloxamidate)(L1) and related o-phenylene(N'-methyloxamidate)oxamate (L2) o-phenylenebis(oxamate)(L3) tetradentate ligands have been synthesized characterized structurally, spectroscopically electrochemically. The parent nickel(II)-L1 complex presents an intense MLCT band in the UV region (lambda max = 357 nm) a distinctive 1 s --> 4p CT satellite Ni K-edge XANES spectrum (E 8339.2 eV). These features...
Two new mononuclear complexes of formula [Hpip][M(salen)(ox)][M = CrIII(1) or FeIII(2)] and the binuclear [Fe2(salen)2(ox)]·H2O, (3) where Hpip piperidinium, salen =N,N′-ethylenebis(saIicylideneiminate), ox oxalate, have been synthesized. Compounds (1) (2) are isostructural, monoclinic, space group P21/n, Z= 4, with a= 24.425(3), b= 6.847(1), c= 14.271(2)Å, β= 100.95(2)° for 24.363(4), 6.991(2), 14.105(3)Å, 98.76(2)°for (2). The structure was solved by direct methods whereas that isomorphous...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis and Magnetic Properties of a Tetranuclear Copper(II) Complex with .mu.-1,2,3,4-Squarato Coordination Mode. Crystal Structure (.mu.-1,2,3,4-Squarato)tetrakis[(tris(2-aminoethyl)amine)copper(II)] PerchlorateIsabel Castro, Jorunn Sletten, Maria Luisa Calatayud, Miguel Julve, Juan Cano, Francesc Lloret, Andrea CaneschiCite this: Inorg. Chem. 1995, 34, 19, 4903–4909Publication Date (Print):September 1, 1995Publication History Published online1...
The square-planar cobalt(III) complexes of o-phenylenebis(N′-methyloxamidate) (Me2opba) and related oxamate (Meopba) bis(oxamate) (opba) ligands catalyse the selective oxidation, by dioxygen pivalaldehyde, a wide range secondary alcohols to corresponding ketones, in good yields under mild conditions acetonitrile at room temperature. Thus, oxidation series α-alkylbenzyl PhCH(OH)R (R = Me, Et, iPr, tBu) results exclusive formation ketones as product C−H bond cleavage, no C−C cleavage products...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMetamagnetic properties of a family ferromagnetic alternating spin chains: bis(dimethylglyoximato)(carboxylato)manganese(III)copper(II)Francesc Lloret, Rafael Ruiz, Miguel Julve, Juan Faus, Yves Journaux, Isabel Castro, and Michel VerdaguerCite this: Chem. Mater. 1992, 4, 6, 1150–1153Publication Date (Print):November 1, 1992Publication History Published online1 May 2002Published inissue 1 November...
A new dinuclear copper(II) complex [Cu2(bpca)2(H2O)2(C4O4)]1[bpca = bis(2-pyridylcarbonyl)amide anion and C4O42)= dianion of squaric acid (3,4-dihydroxycyclobut-3-ene-1,2-dione)] has been synthesised characterized by spectroscopy, magnetic X-ray diffraction methods. It crystallizes in the triclinic space group P with a= 7.222(2), b= 10.272(1), c= 10.362(2)Å, α= 82.85(1), β= 70.89(2), γ= 69.94(2)° Z= 1. The structure consists neutral centrosymmetrical squarate-O1,O3-bridged units....
The crystal and molecular structures of two new complexes [{Cu(terpy)(H2O)}2(ox)][{Cu(terpy)}2(ox)][ClO4]4·2H2O 1 [Cu(terpy)(H2O)(ox)]·4H2O 2(terpy = 2,2′:6′,2″-terpyridine ox oxalate) have been determined by X-ray diffraction. Crystals are monoclinic, space group P21/c, with Z= 2, a= 13.443(2), b= 23.183(4), c= 12.394(1)Å β= 116.29(1)°, whereas those 2 triclinic, P, 10.192(2), 12.319(2), 8.397(3)Å, α= 86.65(3), 96.80(3) γ= 106.14(1)°. structure contains different centrosymmetrical...