Magnesium bis(amidinate) and bis(guanidinate) complexes: impact of the ligand backbone and bridging groups on the coordination behaviour

Roesch, Andreas and Schreiner, Simon H. F. and Schueler, Philipp and Goerls, Helmar and Kretschmer, Robert (2020) Magnesium bis(amidinate) and bis(guanidinate) complexes: impact of the ligand backbone and bridging groups on the coordination behaviour. DALTON TRANSACTIONS, 49 (37). pp. 13072-13082. ISSN 1477-9226, 1477-9234

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Abstract

A library of ten dinucleating bis(amidine) and bis(guanidine) ligands, in which the bridging groups, terminal rests, and backbone substituents were systematically altered, has been synthesized and subsequently applied in metallation reactions using three different magnesium sources. Eight Mg complexes could be isolated and fully characterized, and in seven cases their solid-state structure could be determined by means of single crystal X-ray diffraction analysis. The results evidence a versatile coordination behaviour, which ranges from the first dinuclear heteroleptic magnesium iodide complex to dinuclear homoleptic complexes. These findings indicate the crucial impact of both the ligand and the magnesium source not only on the accessibility of well-defined dinuclear complexes but also on the aggregation in solution and in the solid state.

Item Type: Article
Uncontrolled Keywords: RING-OPENING POLYMERIZATION; ZINC-COMPLEXES; STRUCTURAL-CHARACTERIZATION; HETEROMETALLIC COMPLEXES; LACTIDE POLYMERIZATION; THERMAL-DECOMPOSITION; BINUCLEAR MAGNESIUM; DINUCLEAR MAGNESIUM; AMIDINATE COMPLEXES; ALUMINUM COMPLEXES;
Subjects: 500 Science > 540 Chemistry & allied sciences
Divisions: Chemistry and Pharmacy > Institut für Anorganische Chemie
Depositing User: Dr. Gernot Deinzer
Date Deposited: 12 Mar 2021 07:30
Last Modified: 12 Mar 2021 07:30
URI: https://pred.uni-regensburg.de/id/eprint/43598

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