Metal Vapour Synthesis of an Organometallic Barium(0) Synthon

Townrow O, Färber C, Zenneck U, Harder S (2023)

Publication Type: Journal article

Publication year: 2023

Journal

Angewandte Chemie International Edition Wiley

DOI: 10.1002/anie.202318428

Abstract

A hydrocarbon-soluble barium anthracene complex was prepared by means of metal vapour synthesis. Reaction of 9,10-bis(trimethylsilyl)anthracene (Anth′′) with barium vapour gave deep purple Ba(Anth′′) which after extraction with diethyl ether crystallised as the cyclic octamer [Ba(Anth′′)⋅Et2O]8. Dissolution in benzene or toluene led to replacement of the Et2O ligand with a softer arene ligand and isolation of Ba(Anth′′)⋅arene. Diffusion ordered spectroscopy (DOSY NMR) measurements in benzene-d6 indicate solution species with a molecular weight that equals a trimeric constitution. Natural population analysis (NPA) assigned charges of +1.70 and −1.70 to Ba and Anth′′, respectively, relating to highly ionic Ba2+/Anth′′2− bonding. Preliminary reactivity studies with air, Ph2C=NPh, or H2 show that the complex reacts as a Ba0 synthon by release of neutral Anth′′. This soluble molecular Ba0/BaII redox synthon provides new routes for the syntheses of barium complexes under mild conditions.

Authors with CRIS profile

Oliver Townrow Lehrstuhl für Anorganische und Metallorganische Chemie Christian Färber Lehrstuhl für Anorganische und Metallorganische Chemie Ulrich Zenneck Professur für Anorganische Chemie Sjoerd Harder Lehrstuhl für Anorganische und Metallorganische Chemie

How to cite

APA:

Townrow, O., Färber, C., Zenneck, U., & Harder, S. (2023). Metal Vapour Synthesis of an Organometallic Barium(0) Synthon. Angewandte Chemie International Edition. https://doi.org/10.1002/anie.202318428

MLA:

Townrow, Oliver, et al. "Metal Vapour Synthesis of an Organometallic Barium(0) Synthon." Angewandte Chemie International Edition (2023).

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