Probing the thermal stability of mu-oxo triruthenium clusters

Author(s)

Neves da Silva, Camila Fontes ^[1] ; de Almeida, Eduardo Tonon ^[2] ; Nikolaou, Sofia ^[3] ; Pereira Alexiou, Anamaria Dias ^[3]

Affiliation

^[1] Univ Sao Paulo, Inst Quim, Dept Bioquim, LPFI, Sao Paulo - Brazil

^[2] Univ Fed Alfenas, LabIQ Inst Quim, Alfenas, MG - Brazil

^[3] Univ Sao Paulo, Dept Quim, Lab Atividade Biol & Quim Supramol Compostos Coor, LABiQSC2, Fac Filosofia Ciencias & Letras Ribeirao, Av Bandeirantes 3900, BR-14040901 Ribeirao Preto, SP - Brazil

• Document type: Journal article
• Source: Polyhedron; v. 198, APR 1 2021.
• Web of Science Citations: 0

Abstract

This work presents for the first time a systematic investigation on the thermal decomposition and thermal stability of ten representative triruthenium clusters of general formula {[}Ru-3(mu(3)-O)(mu-Ac)(6)(L)(2)L `](n) (Ac = CH3COO and L = N-heterocycles or H2O; L ` = py, Ac, H2O, CO or NO; n = 1+ or 0). Despite the variation of the N-heterocyclic L ligands, the pyridyl, nitrosyl and carbonyl species are quite similar in terms of their thermal decomposition path. The loosely bound solvent molecules are lost first, followed by the loss of the N-heterocyclic ligands, with the final collapse of the metallic core upon acetates oxidation in the range from 270 to 300 degrees C. Their thermal stability depends on the nature of the L and L ` ligands, varying up to 60 degrees depending on the presence of NO, CO or N-heterocyclic ligands. (C) 2021 Elsevier Ltd. All rights reserved. (AU)

• FAPESP's process: 18/18060-3 - Use of inorganic supramolecular structures for the development of functional molecules and controlled release of bioactive species
• Grantee: Sofia Nikolaou
• Support Opportunities: Regular Research Grants