Structural Investigation of Magnesium Complexes Supported by a Thiopyridyl Scorpionate Ligand

Matthew P. Stevens, Emily Spray, Iñigo J. Vitorica-Yrezabal, Kuldip Singh, Vanessa M. Timmermann, Lia Sotorríos, Fabrizio Ortu

Research output: Contribution to journalArticlepeer-review

5 Downloads (Pure)

Abstract

Herein, we report the synthesis of a series of heteroleptic magnesium complexes stabilized with the scorpionate ligand tris(2-pyridylthio)methanide (Tptm). The compounds of the general formula [Mg(Tptm)(X)] (1-X; X = Cl, Br, I) were obtained via protonolysis reaction between the proligand and selected Grignard reagents. Attempts to isolate the potassium derivative K(Tptm) lead to decomposition of Tptm and formation of the alkene (C5H4N-S)2C=C(C5H4N-S)2, and this degradation was also modelled using DFT methods. Compound 1-I was treated with K(CH2Ph), affording the degradation product [Mg(Bptm)2] (2; Bptm = {CH(S-C5NH3)2}). We analyzed and quantified the steric properties of the Tptm ligand using the structural information of the compounds obtained in this study paired with buried volume calculations, also adding the structural data of HTptm and its CF3-substituted congener (HTptmCF3). These studies highlight the highly flexible nature of this ligand scaffold and its ability to stabilize various coordination motifs and geometries, which is a highly desirable feature in the design of novel organometallic reagents and catalysts.
Original languageEnglish
Article number4564
JournalMolecules
Volume27
Issue number14
DOIs
Publication statusPublished - 18 Jul 2022

Fingerprint

Dive into the research topics of 'Structural Investigation of Magnesium Complexes Supported by a Thiopyridyl Scorpionate Ligand'. Together they form a unique fingerprint.

Cite this