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Article

Steric, Activation Method and Solvent Effects on the Structure of Paddlewheel Diruthenium Complexes

1
Centro de Asistencia a la Investigación Difracción de Rayos X, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, E-28040 Madrid, Spain
2
Departamento de Química Inorgánica, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, Ciudad Universitaria, E-28040 Madrid, Spain
*
Authors to whom correspondence should be addressed.
Academic Editor: Emiliano Principi
Appl. Sci. 2022, 12(3), 1000; https://doi.org/10.3390/app12031000
Received: 16 December 2021 / Revised: 5 January 2022 / Accepted: 17 January 2022 / Published: 19 January 2022
Conventional heating and solvothermal synthetic methods (with or without microwave activation) have been used to study the reaction of o-, m- and p-methoxybenzoic acid with [Ru2Cl(μ-O2CMe)4]. The tetrasubstituted series [Ru2Cl(µ-O2CC6H4-R)4], with R = o-OMe, m-OMe and p-OMe, has been prepared by the three procedures. Depending on the synthetic method and the experimental conditions, three compounds have been isolated (1a, 1b, 1c) with the o-methoxybenzoate ligand. However, with the m- and p-methoxybenzoate ligands, only the complexes 2 and 3 have been obtained, respectively. Compound 1a, with stoichiometry [Ru2Cl(µ-O2CC6H4-o-OMe)4]n, shows a polymeric structure with the chloride ions bridging the diruthenium units to form linear chains. Compounds 2 and 3, with the same stoichiometry, predictably form zig-zag chains in accordance with their insolubility and their magnetic measurements. Compound 1b, [Ru2Cl(µ-O2CC6H4-o-OMe)4(EtOH)], is a discrete molecular species with a chloride ion and one ethanol molecule occupying the axial positions of the dimetallic unit. Compound 1c is a cation-anion complex, [Ru2(µ-O2CC6H4-o-OMe)4(MeOH)2][Ru2Cl2(µ-O2CC6H4-o-OMe)4]. The cationic complex has two solvent molecules at the axial positions whereas the anionic complex has two chloride ligands at these positions. Complexes have been characterized by elemental analyses, mass spectrometry and IR and UV-vis-NIR spectroscopies. A magnetic study of complexes 1a, 1b, 2 and 3 have also been carried out. The crystal structure of compounds 1b and 1c have been solved by single X-ray crystal methods. View Full-Text
Keywords: diruthenium; solvothermal synthesis; microwave synthesis; carboxylate complexes; metal-metal diruthenium; solvothermal synthesis; microwave synthesis; carboxylate complexes; metal-metal
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MDPI and ACS Style

Delgado-Martínez, P.; Moreno-Martínez, L.; González-Prieto, R.; Herrero, S.; Priego, J.L.; Jiménez-Aparicio, R. Steric, Activation Method and Solvent Effects on the Structure of Paddlewheel Diruthenium Complexes. Appl. Sci. 2022, 12, 1000. https://doi.org/10.3390/app12031000

AMA Style

Delgado-Martínez P, Moreno-Martínez L, González-Prieto R, Herrero S, Priego JL, Jiménez-Aparicio R. Steric, Activation Method and Solvent Effects on the Structure of Paddlewheel Diruthenium Complexes. Applied Sciences. 2022; 12(3):1000. https://doi.org/10.3390/app12031000

Chicago/Turabian Style

Delgado-Martínez, Patricia, Luis Moreno-Martínez, Rodrigo González-Prieto, Santiago Herrero, José L. Priego, and Reyes Jiménez-Aparicio. 2022. "Steric, Activation Method and Solvent Effects on the Structure of Paddlewheel Diruthenium Complexes" Applied Sciences 12, no. 3: 1000. https://doi.org/10.3390/app12031000

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