0000000001303037
AUTHOR
Carlos Rojas-dotti
showing 27 related works from this author
Enhancement of the Intermolecular Magnetic Exchange through Halogen···Halogen interactions in Bisadeninium Rhenium(IV) Salts
2017
Two novel ReIV salts of general formula [H2ade]2[ReIVX6]X2·4H2O [H2ade2+ = 9H-adenine-1,7-diium; X = Cl(1) and Br(2)] have been synthesized and magneto-structurally characterized. 1 and 2 are isostructural salts that crystallize in the orthorhombic system with space group Fdd2. Both compounds are made up of discrete mononuclear [ReIVX6]2- and X- anions and doubly protonated adenine cations. The six-coordinate rhenium(IV) ion is bonded to six halide ligands [X = Cl (1) and Br (2)] in an octahedral geometry. Short intermolecular ReIV−X···X−ReIV interactions, as well as ReIV−X···H−N(H2ade) and ReIV−X···H−Ow hydrogen bonds, are present in the crystal lattice of 1 and 2. Magnetic suscep-tibility…
Hexakis(dimethylformamide)iron(II) complex cation in hexahalorhenate(IV)-based salts: synthesis, X-ray structure and magnetic properties
2018
Two iron(II)-rhenium(IV) compounds of general formula [FeII(dmf)6][ReIVX6] [X = Cl (1) and Br (2); dmf = N,N-dimethylformamide] have been prepared and characterized. X-ray powder diffraction measurements on samples of 1 and 2 support the same structure for both systems. The crystal structure of 1 was determined by single-crystal X-ray diffraction. 1 crystallizes in the triclinic system with space group Pī. Each iron(II) is six-coordinate and bonded to six oxygens from six dmf molecules building a distorted octahedral environment. Rhenium(IV) is six-coordinate by six halide anions in an almost regular octahedral geometry. The magnetic properties were investigated from variable-temperature ma…
Water Dissociation of a Dinuclear Bis(3,5‐dimethylpyrazolyl)methane Copper(II) Complex: X‐ray Diffraction Structure, Magnetic Properties, and Charact…
2018
Halogen⋯halogen interactions in the self-assembly of one-dimensional 2,2′-bipyrimidine-based CuIIReIV systems
2018
Two one-dimensional CuIIReIV coordination polymers of the general formula {[ReIVCl4(μ-bpym)CuIIX2]·solvent}n [where bpym = 2,2′-bipyrimidine, X = Cl (1) and Br (2), and solvent = H2O (1) and CHCl3 (2)] have been prepared and characterised structurally and magnetically. Both compounds crystallise in the monoclinic system with space groups P21/c (1) and P21/n (2). Each CuII ion is bonded to two cis nitrogen atoms from the bpym ligand and to four halogen atoms. Two of these halogen atoms are placed in the equatorial plane and the other two are filling the axial positions of the CuII ion, thus generating a distorted octahedral environment for this metal ion in 1 and 2. In both compounds, the Re…
Field-induced slow relaxation of magnetisation in an anionic heterotetranuclear [ZnIIReIV3] system
2019
The compound (NBu4)4[ZnII{ReIVCl4(μ-ox)}3] (1) [NBu4+ = tetra-n-butylammonium cation and ox2− = oxalate dianion] is the first example of an oxalato-bridged ZnII system coordinated to a 5d metal ion that exhibits slow relaxation of magnetisation.
Ligand substitution in cis-bis(acetonitrile)tetrachlororhenium(IV) complex with N,N-dimethylformamide and N,N-dimethylacetamide
2018
Abstract The preparation, crystal structures, and magnetic properties of two novel mononuclear ReIV complexes of formula cis-[ReIVCl4(dmf)2] (1) and cis-[ReIVCl4(dma)2] (2) (dmf = N,N-dimethylformamide and dma = N,N-dimethylacetamide) have been studied. Both ReIV systems were synthesized through ligand substitution reactions from the cis-[ReIVCl4(MeCN)2] precursor, upon heating in the employed solvent. 1 and 2 crystallize in the monoclinic crystal system with space group C2/c. Each ReIV ion exhibits a distorted octahedral environment, being bonded by two oxygen atoms from two dmf (1) and dma (2) molecules and four chloride ions. In the crystal lattice of 1 and 2, the mononuclear ReIV comple…
Thioester-functionalised and oxime-based hexametallic manganese(iii) single-molecule magnets
2017
Two novel hexametallic MnIII complexes of formulae [Mn6(μ3-O)2(H2N-sao)6(3-atpa)2(EtOH)6]·2EtOH·2H2O (1) and [Mn6(μ3-O)2(H2N-sao)6(6-atha)2(EtOH)6]·6EtOH (2) [H2N-saoH2 = salicylamidoxime, 3-hatpa = 3-(acetylthio)propionic acid, 6-hatha = 6-(acetylthio)hexanoic acid] have been synthesised by using thioester-carboxylate ligands and magnetostructurally characterised. 1 crystallises in the triclinic system with space group P and 2 crystallises in the monoclinic system with space group P21/c. The study of the dc and ac magnetic susceptibility reveals single-molecule magnet behaviour for both compounds with spin-ground states S = 12 and S = 4 for 1 and 2, respectively. Hence, 1 and 2 are new mem…
Exploring room-temperature transport of single-molecule magnet-based molecular spintronics devices using the magnetic tunnel junction as a device pla…
2019
A device architecture utilizing a single-molecule magnet (SMM) as a device element between two ferromagnetic electrodes may open vast opportunities to create novel molecular spintronics devices. Here, we report a method of connecting an SMM to the ferromagnetic electrodes. We utilized a nickel (Ni)–AlOx–Ni magnetic tunnel junction (MTJ) with the exposed side edges as a test bed. In the present work, we utilized an SMM with a hexanuclear [Mn6(μ3-O)2(H2N-sao)6(6-atha)2(EtOH)6] [H2N-saoH = salicylamidoxime, 6-atha = 6-acetylthiohexanoate] complex that is attached to alkane tethers terminated with thiols. These Mn-based molecules were electrochemically bonded between the two Ni electrodes of an…
Synthesis and characterisation of a novel ferrimagnetic chain based on copper(II) and rhenium(IV)
2019
Abstract A novel one-dimensional copper(II)–rhenium(IV) coordination polymer of formula {[ReIVBr4(μ-ox)CuII(pyim)2]·MeCN}n (1) [ox = oxalate anion, pyim = 2-(2′-pyridyl)imidazole] has been prepared and characterised. Powder X-ray diffraction measurements on a sample of 1 support the purity of the bulk sample, whereas single-crystal X-ray diffraction shows that 1 crystallises in the orthorhombic system with space group Pbca. The crystal structure of 1 is made up of [CuII(pyim)2]2+ cations and [ReBr4(ox)]2− anions linked through bridging bromide and oxalate groups, which generate alternating CuII and ReIV chains. Variable-temperature magnetic susceptibility measurements performed on 1 reveal …
Hexahalorhenate(iv) salts of protonated ciprofloxacin: antibiotic-based single-ion magnets
2021
Two novel Re(IV) compounds of formula [H2cip][Hcip][ReCl6]Cl·H2O (1) and [Hcip]2[ReBr6] (2) [(H2cip)2+/(Hcip)+ = ciprofloxacindiium cation / ciprofloxacinium cation] have been synthesized and studied structurally and magnetically. 1 crystallizes in the monoclinic system with space group P21/c, whereas 2 crystallizes in the orthorhombic system with space group Pbca. 1 and 2 are hexahalorhenate(IV) salts obtained with the protonated ciprofloxacin antibiotic. In their crystal lattice, the [ReX6]2− [X = Cl(1) and Br(2)] anions are well separated from each other through the protonated ciprofloxacindiium (1) and ciprofloxacinium (1 and 2) cations, which are arranged without generating intermolecu…
Hexanuclear manganese(III) single-molecule magnets based on oxime and azole-type ligands
2019
Abstract Two novel hexanuclear manganese(III) complexes belonging to the Mn6 family of single-molecule magnets (SMMs), of formulae [Mn6(μ3-O)2(H2N-sao)6(bta)2(EtOH)6]·2EtOH·4H2O (1) and [Mn6(μ3-O)2(H2N-sao)6(pta)2(EtOH)6]·4EtOH (2) [H2N-saoH2 = salicylamidoxime, bta = 1,2,3-benzotriazolate anion, pta = 5-phenyl-tetrazolate anion], have been synthesized and characterized structurally and magnetically. Both compounds crystallize in the triclinic system with space group P 1 ¯ (1 and 2). In their crystal packing, adjacent Mn6 complexes are connected through non-coordinating solvent molecules, which are H-bonded to N atoms of azole rings and –NH2 groups of salicylamidoxime ligand. The study of t…
CCDC 1568973: Experimental Crystal Structure Determination
2017
Related Article: Carlos Rojas-Dotti, José Martínez-Lillo|2017|RSC Advances|7|48841|doi:10.1039/C7RA09841C
CCDC 1568972: Experimental Crystal Structure Determination
2017
Related Article: Carlos Rojas-Dotti, José Martínez-Lillo|2017|RSC Advances|7|48841|doi:10.1039/C7RA09841C
CCDC 1848843: Experimental Crystal Structure Determination
2018
Related Article: Donatella Armentano, Adrián Sanchis-Perucho, Carlos Rojas-Dotti, José Martínez-Lillo|2018|CrystEngComm|20|4575|doi:10.1039/C8CE00996A
CCDC 1848844: Experimental Crystal Structure Determination
2018
Related Article: Donatella Armentano, Adrián Sanchis-Perucho, Carlos Rojas-Dotti, José Martínez-Lillo|2018|CrystEngComm|20|4575|doi:10.1039/C8CE00996A
CCDC 1586972: Experimental Crystal Structure Determination
2018
Related Article: Carlos Rojas-Dotti, Nicolás Moliner, Ricardo González, José Martínez-Lillo|2018|Polyhedron|144|82|doi:10.1016/j.poly.2018.01.009
CCDC 1580082: Experimental Crystal Structure Determination
2018
Related Article: Carlos Rojas-Dotti, Nicolás Moliner, Ricardo González, José Martínez-Lillo|2018|J.Coord.Chem.|71|737|doi:10.1080/00958972.2017.1423477
CCDC 1885666: Experimental Crystal Structure Determination
2019
Related Article: Carlos Rojas-Dotti, Adrián Sanchis-Perucho, Marta Orts-Arroyo, Francesc Lloret, José Martínez-Lillo|2019|Comptes Rendus Chimie|22|490|doi:10.1016/j.crci.2019.04.004
CCDC 1866320: Experimental Crystal Structure Determination
2018
Related Article: Adrián Sanchis-Perucho, Carlos Rojas-Dotti, Nicolás Moliner, José Martínez-Lillo|2019|Dalton Trans.|48|370|doi:10.1039/C8DT03728K
CCDC 1556333: Experimental Crystal Structure Determination
2017
Related Article: Donatella Armentano, Miguel A. Barquero, Carlos Rojas-Dotti, Nicolas Moliner, Giovanni De Munno, Euan K. Brechin, and José Martínez-Lillo|2017|Cryst.Growth Des.|17|5342|doi:10.1021/acs.cgd.7b00841
CCDC 1910060: Experimental Crystal Structure Determination
2019
Related Article: Carlos Rojas-Dotti, Nicolás Moliner, Francesc Lloret, José Martínez-Lillo|2019|Polyhedron|170|223|doi:10.1016/j.poly.2019.05.044
CCDC 1556332: Experimental Crystal Structure Determination
2017
Related Article: Donatella Armentano, Miguel A. Barquero, Carlos Rojas-Dotti, Nicolas Moliner, Giovanni De Munno, Euan K. Brechin, and José Martínez-Lillo|2017|Cryst.Growth Des.|17|5342|doi:10.1021/acs.cgd.7b00841
CCDC 1586971: Experimental Crystal Structure Determination
2018
Related Article: Carlos Rojas-Dotti, Nicolás Moliner, Ricardo González, José Martínez-Lillo|2018|Polyhedron|144|82|doi:10.1016/j.poly.2018.01.009
CCDC 1822681: Experimental Crystal Structure Determination
2018
Related Article: Juan F. Torres, Nestor J. Bello-Vieda, Mario A. Macias, Alvaro Munoz-Castro, Carlos Rojas-Dotti, Jose Martinez-Lillo, John Hurtado|2018|Eur.J.Inorg.Chem.|2018|3644|doi:10.1002/ejic.201800478
CCDC 2112864: Experimental Crystal Structure Determination
2021
Related Article: Adri��n Sanchis-Perucho, Marta Orts-Arroyo, Javier Cam��s-Hern��ndez, Carlos Rojas-Dotti, Emilio Escriv��, Francesc Lloret, Jos�� Mart��nez-Lillo|2021|CrystEngComm|23|8579|doi:10.1039/D1CE01337H
CCDC 2112865: Experimental Crystal Structure Determination
2021
Related Article: Adri��n Sanchis-Perucho, Marta Orts-Arroyo, Javier Cam��s-Hern��ndez, Carlos Rojas-Dotti, Emilio Escriv��, Francesc Lloret, Jos�� Mart��nez-Lillo|2021|CrystEngComm|23|8579|doi:10.1039/D1CE01337H
CCDC 1910059: Experimental Crystal Structure Determination
2019
Related Article: Carlos Rojas-Dotti, Nicolás Moliner, Francesc Lloret, José Martínez-Lillo|2019|Polyhedron|170|223|doi:10.1016/j.poly.2019.05.044