0000000001303536
AUTHOR
Diego Venegas-yazigi
Functionalization using biocompatible carboxylated cyclodextrins of iron-based nanoMIL-100
9 pags., 7 figs., 1 tab.
Structural re-arrangement in two hexanuclear CuIIcomplexes: from a spin frustrated trigonal prism to a strongly coupled antiferromagnetic soluble ring complex with a porous tubular structure
The addition of water to a chloroform solution of the Cu6 trigonal prism complex [Cu6(μ6F)(μ2OH)(μ3OCH3)2(μ2OCH3)2(3,5-Me2pz)6] (1) (3,5-Me2pz− = 3,5-dimethylpyrazolate) results in the formation of the Cu6 planar hexagonal ring complex [Cu6(μ2OH)6(3,5-Me2pz)6]·CH3CN·CHCl3 (2). A simple mechanism for this structural re-arrangement is proposed, in which 2 can be viewed as a hydrolysis product of 1. This process is clearly noticeable in the magnetic properties, which change from spin frustrated with a weak antiferromagnetic coupling in 1, to strongly antiferromagnetic in 2. Interestingly, the hexagonal ring complex 2 self-assembles in the solid state to form a porous hexagonal tubular structur…
A systematic study of the optical properties of mononuclear hybrid organo-inorganic lanthanoid complexes
A series of hybrid organo-inorganic mononuclear lanthanoid complexes, [n-NBu4]3[LnH(PW11O39)(phen)2]·H2O, denoted as LM4-1-Ln (Ln = DyIII, TbIII, EuIII, NdIII, ErIII, HoIII and GdIII), were synthesized via hydrothermal synthesis and were structurally characterized by X-ray diffraction. The optical properties of all complexes have been investigated in the solid state. The temperature-dependent emission spectra of LM4-1-Dy, LM4-1-Tb and LM4-1-Eu complexes show intense lanthanoid emissions in the visible region, while LM4-1-Nd shows near-infrared (NIR) luminescence. The EuIII complex shows typical strong red emissions from the 5D0 → 7F0,1,2,3,4 transitions, with the CIE colour coordinates (0.6…
Structural and magnetic characterization of the tridimensional network [Fe(HCO2)3]n·nHCO2H
In this work we report the structural and magnetic characterization of a new three-dimensional porous metal–organic framework (MOF) based on iron(III) and the formate anion, [Fe(HCO2)3]n·nHCO2H (1), which was obtained by solvothermal synthesis. The tridimensional structure crystallizes in the trigonal space group Rc and is formed by highly regular octahedral Fe(OHCO)6 units. These units contain six equal Fe–O distances, with angles slightly different from 90° or 180°. The packing of 1 corresponds to a 3D covalent network defined by face sharing between the parallelepipeds, which are formed by the interactions of Fe(OHCO)6 units through formate ligands, thus generating a 41263 topology. This…
Slow Relaxation of the Magnetization on Frustrated Triangular FeIII Units with S= 1/2 Ground State: The Effect of the Highly Ordered Crystal Lattice and the Counteranions
In order to understand how the different arrangements of highly ordered triangular FeIII S = 1/2 systems with various types of diamagnetic and paramagnetic anions affect their static and dynamic magnetic properties, we have obtained by solvothermal synthesis four new μ3-oxido trinuclear FeIII compounds, [Fe3O(Ac)6(AcNH2)3][BF4]·(CH3CONH2)0.5(H2O)0.5 (1-BF4), [Fe3O(Ac)6(AcNH2)3][GaCl4] (1-GaCl4), [Fe3O(Ac)6(AcNH2)3][FeCl4] (1-FeCl4) and [Fe3O(Ac)6(AcNH2)3][FeBr4] (1-FeBr4), where, Ac- = CH3COO- and AcNH2 = CH3CONH2. The organization of the triangular units is very varied, from segregated stacks to eclipsed equilateral triangular [Fe3O]+ units along the c-axis with intercalated [MX4]- units. …
Hybrid organic-inorganic mononuclear lanthanoid single ion magnets
The first family of hybrid mononuclear organic-inorganic lanthanoid complexes is reported, based on [PW11O39]7− and 1,10-phenanthroline ligands. This hybrid approach causes a dramatic improvement of the relaxation time (×1000) with a decrease of the optimal field while maintaining the Ueff of the inorganic analogues.
Magnetic properties of vanadium(IV)-based extended systems: [(VO)3(μ-PO4)2(2,2′-bpy)(μ-OH2)]*1/3H2O and (VO)2H4P2O9
International audience; The magnetic properties of [(VO)3(μ-PO4)2(2,2′-bpy)(μ-OH2)]1/3H2O (1) and (VO)2H4P2O9 (2), a tubular and a layered vanadium(IV) phosphates containing triply oxido bridged VIV dimers, are analyzed considering the Bleaney-Bowers S = 1/2 dimer model. In compound 1 the presence of an additional VIV connected with the VIV dimers through μ1,2-PO43− bridges is described with a Curie-Weiss type correction. This model reproduces the magnetic properties of compound 1 with g = 1.956, Jdim = −102.1 cm−1, θ = −0.4 cm−1 and Nα = 278 × 10−6 emu mol−1. In compound 2, the presence of a small percentage of paramagnetic impurity has to be considered to account for the divergence of χm …
CCDC 1951515: Experimental Crystal Structure Determination
Related Article: Walter Cañón-Mancisidor, Matias Zapata-Lizama, Patricio Hermosilla-Ibáñez, Carlos Cruz, Diego Venegas-Yazigi, Guillermo Mínguez Espallargas|2019|Chem.Commun.|55|14992|doi:10.1039/C9CC07868A
CCDC 1951516: Experimental Crystal Structure Determination
Related Article: Walter Cañón-Mancisidor, Matias Zapata-Lizama, Patricio Hermosilla-Ibáñez, Carlos Cruz, Diego Venegas-Yazigi, Guillermo Mínguez Espallargas|2019|Chem.Commun.|55|14992|doi:10.1039/C9CC07868A
CCDC 1951518: Experimental Crystal Structure Determination
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CCDC 1962564: Experimental Crystal Structure Determination
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CCDC 927863: Experimental Crystal Structure Determination
Related Article: Walter Cañon-Mancisidor, Carlos J. Gómez-García, Guillermo Mínguez Espallargas, Andres Vega, Evgenia Spodine, Diego Venegas-Yazigi, Eugenio Coronado|2014|Chemical Science|5|324|doi:10.1039/C3SC52628C
CCDC 1951517: Experimental Crystal Structure Determination
Related Article: Matias Zapata-Lizama, Patricio Hermosilla-Ibáñez, Diego Venegas-Yazigi, Guillermo Mínguez Espallargas, Lauro June Queiroz Maia, Gisane Gasparotto, Ricardo Costa De Santana, Walter Cañón-Mancisidor|2020|Inorg.Chem.Front.|7|3049|doi:10.1039/D0QI00232A
CCDC 1547609: Experimental Crystal Structure Determination
Related Article: Walter Can��o��n-Mancisidor, Patricio Hermosilla-Iba��n��ez, Evgenia Spodine, Vero��nica Paredes-Garci��a, Carlos J. Go��mez-Garci��a, Guillermo Mi��nguez Espallargas, Diego Venegas-Yazigi|2021|Cryst.Growth Des.|21|6213|doi:10.1021/acs.cgd.1c00640
CCDC 1962563: Experimental Crystal Structure Determination
Related Article: Matias Zapata-Lizama, Patricio Hermosilla-Ibáñez, Diego Venegas-Yazigi, Guillermo Mínguez Espallargas, Lauro June Queiroz Maia, Gisane Gasparotto, Ricardo Costa De Santana, Walter Cañón-Mancisidor|2020|Inorg.Chem.Front.|7|3049|doi:10.1039/D0QI00232A
CCDC 927864: Experimental Crystal Structure Determination
Related Article: Walter Cañon-Mancisidor, Carlos J. Gómez-García, Guillermo Mínguez Espallargas, Andres Vega, Evgenia Spodine, Diego Venegas-Yazigi, Eugenio Coronado|2014|Chemical Science|5|324|doi:10.1039/C3SC52628C
CCDC 927862: Experimental Crystal Structure Determination
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CCDC 915782: Experimental Crystal Structure Determination
Related Article: Verónica Paredes-García, Ignacio Rojas, Rosa Madrid, Andres Vega, Efrén Navarro-Moratalla, Walter Cañón-Mancisidor, Evgenia Spodine, Diego Venegas-Yazigi|2013|New J.Chem.|37|2120|doi:10.1039/C3NJ00023K
CCDC 1547608: Experimental Crystal Structure Determination
Related Article: Walter Can��o��n-Mancisidor, Patricio Hermosilla-Iba��n��ez, Evgenia Spodine, Vero��nica Paredes-Garci��a, Carlos J. Go��mez-Garci��a, Guillermo Mi��nguez Espallargas, Diego Venegas-Yazigi|2021|Cryst.Growth Des.|21|6213|doi:10.1021/acs.cgd.1c00640
CCDC 1951519: Experimental Crystal Structure Determination
Related Article: Walter Cañón-Mancisidor, Matias Zapata-Lizama, Patricio Hermosilla-Ibáñez, Carlos Cruz, Diego Venegas-Yazigi, Guillermo Mínguez Espallargas|2019|Chem.Commun.|55|14992|doi:10.1039/C9CC07868A
CCDC 1547607: Experimental Crystal Structure Determination
Related Article: Walter Can��o��n-Mancisidor, Patricio Hermosilla-Iba��n��ez, Evgenia Spodine, Vero��nica Paredes-Garci��a, Carlos J. Go��mez-Garci��a, Guillermo Mi��nguez Espallargas, Diego Venegas-Yazigi|2021|Cryst.Growth Des.|21|6213|doi:10.1021/acs.cgd.1c00640
CCDC 927865: Experimental Crystal Structure Determination
Related Article: Walter Cañon-Mancisidor, Carlos J. Gómez-García, Guillermo Mínguez Espallargas, Andres Vega, Evgenia Spodine, Diego Venegas-Yazigi, Eugenio Coronado|2014|Chemical Science|5|324|doi:10.1039/C3SC52628C
CCDC 1547610: Experimental Crystal Structure Determination
Related Article: Walter Can��o��n-Mancisidor, Patricio Hermosilla-Iba��n��ez, Evgenia Spodine, Vero��nica Paredes-Garci��a, Carlos J. Go��mez-Garci��a, Guillermo Mi��nguez Espallargas, Diego Venegas-Yazigi|2021|Cryst.Growth Des.|21|6213|doi:10.1021/acs.cgd.1c00640