0000000001300913
AUTHOR
Walace D. Do Pim
A heterobimetallic [MnII5CuII5] nanowheel modulated by a flexible bis-oxamate type ligand
The synthesis, crystal structure and preliminary magnetic characterization of a new heterobimetallic [MnII5CuII5] wheel containing a flexible bis-oxamate type ligand are described. This decanuclear compound exhibits a relatively strong intra-wheel antiferromagnetic interaction leading to a ground spin state S = 10.
Monitoring the hydrogen bond net configuration and the dimensionality of aniline and phenyloxamate by adding 1 H -pyrazole and isoxazole as substituents for molecular self-recognition
This work describes the synthesis and characterization of a new class of oxamic acid derivatives containing pyrazole and isoxazole as substituents to investigate their ability to form hydrogen bonds aiming at applying them in crystal engineering and molecular self-recognition. In this respect, we report a new synthesis of 2-(4-nitrophenyl)-1,3-propanedial (1) in high yield using SOCl2 as a chlorinating agent. The new oxamic esters 4-(1H-pyrazol-4-yl)phenylene-N-(ethyloxamate) (2d) and 4-(1,2-oxazol-4-yl)phenylene-N-(ethyloxamate) (3d) were prepared from 1. The synthetic route consists of the cyclisation of 1 either with hydrazine to afford 4-(-aminophenyl)-1H-pyrazole (2a) or with hydroxyla…
Polymorphic Derivatives of NiII and CoII Mesocates with 3D Networks and “Brick and Mortar” Structures: Preparation, Structural Characterization, and Cryomagnetic Investigation of New Single-Molecule Magnets
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 ...
A hybrid catalyst for decontamination of organic pollutants based on a bifunctional dicopper(II) complex anchored over niobium oxyhydroxide
Abstract This article describes the preparation and characterization of a hybrid oxidation catalyst for decontamination of organic pollutants which involves a bifunctional dicopper(II) complex and the niobium(V) oxyhydroxide as the active species, the later one being also a solid support. The pH range for the existence of the active species was determined by potentiometric and UV–vis spectroscopy at 25 °C and 0.15 M NaCl in a H 2 O/EtOH (70:30 v/v) solvent mixture containing copper(II) and the ligand N , N -2,2′-ethylenediphenylenebis(oxamic acid) (H 4 L). As far as the hybrid material is concerned, FTIR, FT-Raman, TEM and SEM images, surface area and TG/DTA analyses showed the occurrence o…
Building-up host-guest helicate motifs and chains: a magneto-structural study of new field-induced cobalt-based single-ion magnets.
In this work, we present the synthetic pathway, a refined structural description, complete solid-state characterization and the magnetic properties of four new cobalt(II) compounds of formulas [Co(H2O)6][Co2(H2mpba)3]·2H2O·0.5dmso (1), [Co(H2O)6][Co2(H2mpba)3]·3H2O·0.5dpss (2), [Co2(H2mpba)2(H2O)4]n·4nH2O (3), and [Co2(H2mpba)2(CH3OH)2(H2O)2]n·0.5nH2O·2ndpss (4) [dpss = 2,2′-dipyridyldisulfide and H4mpba = 1,3-phenylenebis(oxamic) acid], where 2 and 4 were obtained from [Co(dpss)Cl2] (Pre-I) as the source of cobalt(II). All four compounds are air-stable and were prepared under ambient conditions. 1 and 2 were obtained from a slow diffusion method [cobalt(II) : H2mpba2− molar ratio used 1 : …
Solvent effects on the dimensionality of oxamato-bridged manganese(II) compounds
Two new oxamate-containing manganese(II) complexes, [{Mn(H2edpba)(H2O)2}2]n (1) and [Mn(H2edpba)(dmso)2]∙dmso∙CH3COCH3∙H2O (2) (H4edpba = N,N′-ethylenediphenylenebis(oxamic acid) and dmso = dimethylsulfoxide), have been synthesized and the structures of 1 and 2 were characterized by single crystal X-ray diffraction. The structure of 1 consists of neutral honeycomb networks in which each manganese(II) is six-coordinate by one H2edpba2− ligand and two carboxylate–oxygens from two other H2edpba2− ligands building the equatorial plane. Each manganese is connected to its nearest neighbor through two carboxylate(monoprotonated oxamate) bridges in an anti-syn conformation. A dmso solution of singl…
Solvent-driven dimensionality control in molecular systems containing CuII, 2,2′-bipyridine and an oxamato-based ligand
A discrete dicopper(II) system, [Cu(bipy)(H2mpba)]2·2H2O (1), and its isomeric chain, [Cu(bipy)(H2mpba)]·dmso (2) [bipy = 2,2′-bipyridine and H4mpba = N,N′-1,3-phenylenebis(oxamic acid)], were obtained by modifying the ratio of the H2O–dmso solvent mixture, and their interconversion was also monitored by changing the solvents during the synthesis. The solvents play an essential role in the formation and crystallization of these complexes, presenting different dimensionalities and connectivities. The double deprotonated H2mpba2− adopts the bidentate/monodentate (1) and bis-bidentate (2) bridging modes toward the (2,2′-bipyridyl)copper(II) units affording a dinuclear compound (1) and a linear…
Unexpected formation of a dodecanuclear {CoII6CuII6} nanowheel under ambient conditions: magneto-structural correlations.
We report the unique heterobimetallic dodecanuclear oxamate-based {CoII6CuII6} nanowheel obtained using an environmentally friendly synthetic protocol. The effective Hamiltonian methodology employed herein allows the rationalisation of magnetic isotropic or anisotropic metal clusters, being a significant advance for future studies of exciting properties only observed at low and ultralow temperatures.
Influence of Copper(II) and Nickel(II) Ions in the Topology of Systems Based on a Flexible Bis-Oxamate and Bipyridine Building Blocks
Single crystals of the mononuclear bis-oxamate nickel(II) complex [Ni(bipy)(H2edpba)]·dmso (1) are obtained by reacting [Ni(bipy)Cl2]·H2O and the flexible K2(H2edpba) ligand [bipy = 2,2′-bipyridine; H4edpba = N,N′-2,2′-ethylenediphenylenebis(oxamic acid)]. The reaction of 1 with copper(II) ions resulted in two products in which the replacement of the nickel(II) ion by copper(II) took place: the chain compound [Cu(bipy)(H2edpba)]n·3nH2O·ndmso [dmso = dimethyl sulfoxide] (2) and the analogous chain compound without dmso crystallization molecules [Cu(bipy)(H2edpba)]n·1.5nH2O (3a) in its polycrystalline form. The reaction of [Cu(bipy)Cl2] and K2(H2edpba) yielded single crystals of [Cu(bipy)(H2e…
A pH-triggered bistable copper(II) metallacycle as a reversible emulsion switch for biphasic processes.
A unique bistable copper-metallacyclic complex is used as an elegant molecular switch for the reversible formation of emulsions by simple pH variation. This switch may have several exciting applications in biphasic processes such as catalysis and separation science technologies.
CCDC 1016163: Experimental Crystal Structure Determination
Related Article: Walace D. do Pim, Tatiana R. G. Simões, Willian X. C. Oliveira, Isabella R. A. Fernandes, Carlos B. Pinheiro, Francesc Lloret, Miguel Julve, Humberto O. Stumpf, Cynthia L. M. Pereira|2014|Cryst.Growth Des.|14|5929|doi:10.1021/cg501134y
CCDC 1898457: Experimental Crystal Structure Determination
Related Article: Ludmila dos S. Mariano, Iara M. L. Rosa, Nathália R. De Campos, Antônio C. Doriguetto, Danielle F. Dias, Walace D. do Pim, Ana Karoline S.M. Valdo, Felipe T. Martins, Marcos A. Ribeiro, Elgte E. B. De Paula, Emerson F. Pedroso, Humberto O. Stumpf, Joan Cano, Francesc Lloret, Miguel Julve, Maria Vanda Marinho|2020|Cryst.Growth Des.|20|2462|doi:10.1021/acs.cgd.9b01638
CCDC 1898455: Experimental Crystal Structure Determination
Related Article: Ludmila dos S. Mariano, Iara M. L. Rosa, Nathália R. De Campos, Antônio C. Doriguetto, Danielle F. Dias, Walace D. do Pim, Ana Karoline S.M. Valdo, Felipe T. Martins, Marcos A. Ribeiro, Elgte E. B. De Paula, Emerson F. Pedroso, Humberto O. Stumpf, Joan Cano, Francesc Lloret, Miguel Julve, Maria Vanda Marinho|2020|Cryst.Growth Des.|20|2462|doi:10.1021/acs.cgd.9b01638
CCDC 1843195: Experimental Crystal Structure Determination
Related Article: Willian X. C. Oliveira, Walace D. do Pim, Carlos B. Pinheiro, Yves Journaux, Miguel Julve, Cynthia L. M. Pereira|2019|CrystEngComm|21|2818|doi:10.1039/C9CE00215D
CCDC 1843197: Experimental Crystal Structure Determination
Related Article: Willian X. C. Oliveira, Walace D. do Pim, Carlos B. Pinheiro, Yves Journaux, Miguel Julve, Cynthia L. M. Pereira|2019|CrystEngComm|21|2818|doi:10.1039/C9CE00215D
CCDC 1883575: Experimental Crystal Structure Determination
Related Article: Nathália R. de Campos, Cintia A. Simosono, Iara M. Landre Rosa, Rafaela M. R. da Silva, Antônio C. Doriguetto, Walace D. do Pim, Tatiana R. Gomes Simões, Ana Karoline S. M. Valdo, Felipe T. Martins, Charlie V. Sarmiento, Wallace C. Nunes, Guilherme P. Guedes, Emerson F. Pedroso, Cynthia L. M. Pereira, Humberto O. Stumpf, Francesc Lloret, Miguel Julve, Maria Vanda Marinho|2021|Dalton Trans.|50|10707|doi:10.1039/D1DT01693H
CCDC 1031230: Experimental Crystal Structure Determination
Related Article: Walace D. do Pim, Érica N. de Faria, Willian X. C. Oliveira, Carlos B. Pinheiro, Wallace C. Nunes, Joan Cano, Francesc Lloret, Miguel Julve, Humberto O. Stumpf, Cynthia L. M. Pereira|2015|Dalton Trans.|44|10939|doi:10.1039/C5DT00996K
CCDC 942308: Experimental Crystal Structure Determination
Related Article: Tatiana R. G. Simões, Walace D. do Pim, Ingrid F. Silva, Willian X. C. Oliveira, Carlos B. Pinheiro, Cynthia L. M. Pereira, Francesc Lloret, Miguel Julve, Humberto O. Stumpf|2013|CrystEngComm|15|10165|doi:10.1039/C3CE41783B
CCDC 1883574: Experimental Crystal Structure Determination
Related Article: Nathália R. de Campos, Cintia A. Simosono, Iara M. Landre Rosa, Rafaela M. R. da Silva, Antônio C. Doriguetto, Walace D. do Pim, Tatiana R. Gomes Simões, Ana Karoline S. M. Valdo, Felipe T. Martins, Charlie V. Sarmiento, Wallace C. Nunes, Guilherme P. Guedes, Emerson F. Pedroso, Cynthia L. M. Pereira, Humberto O. Stumpf, Francesc Lloret, Miguel Julve, Maria Vanda Marinho|2021|Dalton Trans.|50|10707|doi:10.1039/D1DT01693H
CCDC 1883576: Experimental Crystal Structure Determination
Related Article: Nathália R. de Campos, Cintia A. Simosono, Iara M. Landre Rosa, Rafaela M. R. da Silva, Antônio C. Doriguetto, Walace D. do Pim, Tatiana R. Gomes Simões, Ana Karoline S. M. Valdo, Felipe T. Martins, Charlie V. Sarmiento, Wallace C. Nunes, Guilherme P. Guedes, Emerson F. Pedroso, Cynthia L. M. Pereira, Humberto O. Stumpf, Francesc Lloret, Miguel Julve, Maria Vanda Marinho|2021|Dalton Trans.|50|10707|doi:10.1039/D1DT01693H
CCDC 927505: Experimental Crystal Structure Determination
Related Article: Walace D. do Pim, Willian X. C. Oliveira, Marcos A. Ribeiro, Érica N. de Faria, Ivo F. Teixeira, Humberto O. Stumpf, Rochel M. Lago, Cynthia L. M. Pereira, Carlos B. Pinheiro, João C. D. Figueiredo-Júnior, Wallace C. Nunes, Patterson P. de Souza, Emerson F. Pedroso, María Castellano, Joan Cano, Miguel Julve|2013|Chem.Commun.|49|10778|doi:10.1039/C3CC46242K
CCDC 1898454: Experimental Crystal Structure Determination
Related Article: Ludmila dos S. Mariano, Iara M. L. Rosa, Nathália R. De Campos, Antônio C. Doriguetto, Danielle F. Dias, Walace D. do Pim, Ana Karoline S.M. Valdo, Felipe T. Martins, Marcos A. Ribeiro, Elgte E. B. De Paula, Emerson F. Pedroso, Humberto O. Stumpf, Joan Cano, Francesc Lloret, Miguel Julve, Maria Vanda Marinho|2020|Cryst.Growth Des.|20|2462|doi:10.1021/acs.cgd.9b01638
CCDC 1993352: Experimental Crystal Structure Determination
Related Article: Nathália R. de Campos, Cintia A. Simosono, Iara M. Landre Rosa, Rafaela M. R. da Silva, Antônio C. Doriguetto, Walace D. do Pim, Tatiana R. Gomes Simões, Ana Karoline S. M. Valdo, Felipe T. Martins, Charlie V. Sarmiento, Wallace C. Nunes, Guilherme P. Guedes, Emerson F. Pedroso, Cynthia L. M. Pereira, Humberto O. Stumpf, Francesc Lloret, Miguel Julve, Maria Vanda Marinho|2021|Dalton Trans.|50|10707|doi:10.1039/D1DT01693H
CCDC 927507: Experimental Crystal Structure Determination
Related Article: Walace D. do Pim, Willian X. C. Oliveira, Marcos A. Ribeiro, Érica N. de Faria, Ivo F. Teixeira, Humberto O. Stumpf, Rochel M. Lago, Cynthia L. M. Pereira, Carlos B. Pinheiro, João C. D. Figueiredo-Júnior, Wallace C. Nunes, Patterson P. de Souza, Emerson F. Pedroso, María Castellano, Joan Cano, Miguel Julve|2013|Chem.Commun.|49|10778|doi:10.1039/C3CC46242K
CCDC 942307: Experimental Crystal Structure Determination
Related Article: Tatiana R. G. Simões, Walace D. do Pim, Ingrid F. Silva, Willian X. C. Oliveira, Carlos B. Pinheiro, Cynthia L. M. Pereira, Francesc Lloret, Miguel Julve, Humberto O. Stumpf|2013|CrystEngComm|15|10165|doi:10.1039/C3CE41783B
CCDC 1031229: Experimental Crystal Structure Determination
Related Article: Walace D. do Pim, Ingrid F. Silva, Eufrânio N. da Silva Júnior, Humberto O. Stumpf, Willian X. C. Oliveira, Emerson F. Pedroso, Carlos B. Pinheiro, Yves Journaux, Felipe Fantuzzi, Ivo Krummenacher, Holger Braunschweig, Bernd Engels, Joan Cano, Miguel Julve, Cynthia L. M. Pereira|2021|Dalton Trans.|50|12430|doi:10.1039/D1DT02268G
CCDC 927506: Experimental Crystal Structure Determination
Related Article: Walace D. do Pim, Willian X. C. Oliveira, Marcos A. Ribeiro, Érica N. de Faria, Ivo F. Teixeira, Humberto O. Stumpf, Rochel M. Lago, Cynthia L. M. Pereira, Carlos B. Pinheiro, João C. D. Figueiredo-Júnior, Wallace C. Nunes, Patterson P. de Souza, Emerson F. Pedroso, María Castellano, Joan Cano, Miguel Julve|2013|Chem.Commun.|49|10778|doi:10.1039/C3CC46242K
CCDC 1898456: Experimental Crystal Structure Determination
Related Article: Ludmila dos S. Mariano, Iara M. L. Rosa, Nathália R. De Campos, Antônio C. Doriguetto, Danielle F. Dias, Walace D. do Pim, Ana Karoline S.M. Valdo, Felipe T. Martins, Marcos A. Ribeiro, Elgte E. B. De Paula, Emerson F. Pedroso, Humberto O. Stumpf, Joan Cano, Francesc Lloret, Miguel Julve, Maria Vanda Marinho|2020|Cryst.Growth Des.|20|2462|doi:10.1021/acs.cgd.9b01638
CCDC 1843194: Experimental Crystal Structure Determination
Related Article: Willian X. C. Oliveira, Walace D. do Pim, Carlos B. Pinheiro, Yves Journaux, Miguel Julve, Cynthia L. M. Pereira|2019|CrystEngComm|21|2818|doi:10.1039/C9CE00215D
CCDC 1883577: Experimental Crystal Structure Determination
Related Article: Nathália R. de Campos, Cintia A. Simosono, Iara M. Landre Rosa, Rafaela M. R. da Silva, Antônio C. Doriguetto, Walace D. do Pim, Tatiana R. Gomes Simões, Ana Karoline S. M. Valdo, Felipe T. Martins, Charlie V. Sarmiento, Wallace C. Nunes, Guilherme P. Guedes, Emerson F. Pedroso, Cynthia L. M. Pereira, Humberto O. Stumpf, Francesc Lloret, Miguel Julve, Maria Vanda Marinho|2021|Dalton Trans.|50|10707|doi:10.1039/D1DT01693H
CCDC 1843196: Experimental Crystal Structure Determination
Related Article: Willian X. C. Oliveira, Walace D. do Pim, Carlos B. Pinheiro, Yves Journaux, Miguel Julve, Cynthia L. M. Pereira|2019|CrystEngComm|21|2818|doi:10.1039/C9CE00215D
CCDC 1016161: Experimental Crystal Structure Determination
Related Article: Walace D. do Pim, Tatiana R. G. Simões, Willian X. C. Oliveira, Isabella R. A. Fernandes, Carlos B. Pinheiro, Francesc Lloret, Miguel Julve, Humberto O. Stumpf, Cynthia L. M. Pereira|2014|Cryst.Growth Des.|14|5929|doi:10.1021/cg501134y
CCDC 1016162: Experimental Crystal Structure Determination
Related Article: Walace D. do Pim, Tatiana R. G. Simões, Willian X. C. Oliveira, Isabella R. A. Fernandes, Carlos B. Pinheiro, Francesc Lloret, Miguel Julve, Humberto O. Stumpf, Cynthia L. M. Pereira|2014|Cryst.Growth Des.|14|5929|doi:10.1021/cg501134y
CCDC 1843198: Experimental Crystal Structure Determination
Related Article: Willian X. C. Oliveira, Walace D. do Pim, Carlos B. Pinheiro, Yves Journaux, Miguel Julve, Cynthia L. M. Pereira|2019|CrystEngComm|21|2818|doi:10.1039/C9CE00215D