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.
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 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