Emerson F. Pedroso

Federal Center for Technological Education of Minas Gerais

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Cynthia L. M. Pereira

Universidade Federal de Minas Gerais

Miguel Julve

Parc Científic de la Universitat de València

Willian X. C. Oliveira

Universidade Federal de Minas Gerais

Humberto O. Stumpf

Universidade Federal de Minas Gerais

Wallace C. Nunes

Universidade Federal Fluminense

Carlos B. Pinheiro

University of Lisbon

Walace D. do Pim

University of Ottawa

Felipe Terra Martins

Universidade Federal de Goiás

Francesc Lloret

Parc Científic de la Universitat de València

Tamyris T. da Cunha

Universidade Federal de Minas Gerais

Cooperative Institutions

Universidade Federal de Minas Gerais

Federal Center for Technological Education of Minas Gerais

Instituto de Investigaciones en Ciencias de la Salud

Universitat de València

Centro Universitário de Belo Horizonte

Universidade Estadual de Campinas (UNICAMP)

Universidade Federal do Rio de Janeiro

Universidade Federal de Juiz de Fora

Parc Científic de la Universitat de València

Centre National de la Recherche Scientifique

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Papers

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Palladium(II) and platinum(II) oxamate complexes as potential anticancer agents: Structural characterization and cytotoxic activity

Polyhedron (2014)

Willian X. C. Oliveira Marinez M. Da Costa Ana Paula Soares Fontes Carlos B. Pinheiro F.C.S. De Paula

10.1016/j.poly.2014.03.049

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Citations (32)

CCDC 927505: Experimental Crystal Structure Determination

The Cambridge Structural Database (2013)

Walace D. do Pim Willian X. C. Oliveira Marcos A. Ribeiro Érica N. De Faria Ivo F. Teixeira

An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.

Crystal (programming language)

10.5517/cc1044jt

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Citations (0)

CCDC 1840847: Experimental Crystal Structure Determination

The Cambridge Structural Database (2019)

Tamyris T. da Cunha Vitor M. M. Barbosa Willian X. C. Oliveira Carlos B. Pinheiro Emerson F. Pedroso

10.5517/ccdc.csd.cc1zsk5h

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Citations (0)

CCDC 1958347: Experimental Crystal Structure Determination

The Cambridge Structural Database (2020)

Raphael C. A. Vaz Isabela O. Esteves Willian X. C. Oliveira João Honorato Felipe Terra Martins

10.5517/ccdc.csd.cc23qth5

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CCDC 1883574: Experimental Crystal Structure Determination

The Cambridge Structural Database (2021)

Nathália R. de Campos Cintia A. Simosono Iara M. L. Rosa Rafaela M. R. da Silva A.C. Doriguetto

10.5517/ccdc.csd.cc2170gs

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Isostructural Oxamate Complexes with Visible Luminescence (Eu3+) and Field‐Induced Single‐Molecule Magnet (Nd3+)

Chemistry - An Asian Journal (2024)

Emilay B. T. Diogo Eufrânio N. da Silva Júnior Willian X. C. Oliveira Humberto O. Stumpf Fernando Fabris

Abstract The search for new metal‐organic compounds as candidates for quantum information processing technologies is in the spotlight. Several metal ions and organic linkers have been used to obtain such compounds. Herein, we describe the synthesis, crystal structures, and cryomagnetic properties of two air‐stable isostructural neodymium(III) and europium(III) one‐dimensional (1D) coordination polymers of formula [Nd(Hmpa) 3 (DMSO) 2 ] n ( 1 ) and [Eu(Hmpa) 3 (DMSO) 2 ] n ( 2 ) [Hmpa= N ‐(4‐methylphenyl)oxamate, and DMSO=dimethylsulfoxide]. These complexes were prepared by reacting n ‐Bu 4 N(Hmpa) proligand [ n ‐Bu 4 N + =tetra‐ n ‐butylammonium] and the correspondent LnCl 3 ⋅ 6H 2 O salt (Ln=Nd or Eu) in the open air and mild conditions. The crystal structures of 1 and 2 reveal the Ln 3+ ion surrounded by two DMSO molecules and three oxamate ligands, one of them connecting to adjacent mononuclear entities through carboxylate bridges featuring a homometallic chain, while the other two establishing double N−H ⋅ ⋅ ⋅ O hydrogen bonds among adjacent polymers to give a resultant supramolecular 2D network. Cryomagnetic measurements in the static (dc) and dynamic current (ac) regimes reveal that 1 behaves as a field‐induced single‐molecule magnet below 8.8 K. A photoluminescence study shows that Hmpa ligands efficiently sensitize the luminescence of Eu 3+ complex in the visible region in the solid state at room temperature.

Isostructural

Single-molecule magnet

10.1002/asia.202400887

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Citations (1)

Isomorphic Oxamate Derivatives Triple Mesocates: From the Synthesis to Antibacterial Activities

Jeane E. Francescon Sâmella C. de J. Pfau Ketlyn W. Borth Maria Vanda Marinho Emerson F. Pedroso

10.2139/ssrn.4960679

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CCDC 951253: Experimental Crystal Structure Determination

The Cambridge Structural Database (2014)

Wdeson P. Barros Beatriz C. Da Silva Natália V. Reis Cynthia L. M. Pereira A.C. Doriguetto

10.5517/cc10xvlc

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Citations (0)

CCDC 2192272: Experimental Crystal Structure Determination

The Cambridge Structural Database (2022)

Júlia S. Parreiras Erica N. Faria Willian X. C. Oliveira Carlos B. Pinheiro Walace D. do Pim

10.5517/ccdc.csd.cc2cl7gp

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Polymorphic Derivatives of Ni^II and Co^II Mesocates with 3D Networks and “Brick and Mortar” Structures: Preparation, Structural Characterization, and Cryomagnetic Investigation of New Single-Molecule Magnets

Crystal Growth & Design (2020)

Ludmila dos S. Mariano Iara M. L. Rosa Nathália R. de Campos A.C. Doriguetto Danielle Ferreira Dias

In this work we describe the preparation, spectroscopic, thermal and structural characterization, and cryomagnetic investigation of four new polymorphic derivatives of the [M2(H2mpba)3]2– mesocate of formulas {[K2(dmf)2(H2O)2][M2(H2mpba)3]·2H2O}n (M = Co (1), Ni (2)) and [M(tppz)2][M2(H2mpba)3]·9H2O (M = Co (3), Ni (4)) (H4mpba = 1,3-phenylenebis(oxamic) acid), tppz = 2,3,5,6-tetrakis(2-pyridyl)pyrazine). Pairs 1/2 and 3/4 are isomorphous compounds exhibiting a triple-stranded dinuclear motif, [M2(H2mpba)3]2–. 1 and 2 exhibit a three-dimensional network with [M2(H2mpba)3]2– mesocates interlinked by potassium(I) ions. 3 and 4 present a brick and mortar network, where the "brick" is [M2(H2mpba)3]2– + [M(tppz)2]2+ and the "mortar" refers to water molecules, where the electroneutrality of the motif is achieved by the [M(tppz)2]2+ cationic complex. The dc magnetic data for 1–4 in the temperature range 1.9–300 K reveal the occurrence of magnetically isolated high-spin cobalt(II) of the mesocate units in 1 and 3 plus a thermally induced spin crossover behavior of the [Co(tppz)2]2+ unit in 3, whereas 2 and 4 exhibit Curie law behavior. Out-of-phase ac signals are observed for 1 and 3 at temperatures below 14 K under zero and nonzero applied dc fields, which are characteristic of the occurrence of slow magnetic relaxation in these systems, thus being new examples of single-molecule magnets (SMMs).

Pyrazine

Atmospheric temperature range

10.1021/acs.cgd.9b01638

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Citations (13)