Single- vs Double-Decker Copper 12-MC-4 Metallacrown Using the Coordination Flexibility of a Soft Donor Ligand

Gamer C, Sundaresan S, Carrella LM, Rentschler E (2022)

Publication Type: Journal article

Publication year: 2022

Journal

European Journal of Inorganic Chemistry Wiley-VCH Verlag

Book Volume: 2022

Article Number: e202200261

Journal Issue: 22

DOI: 10.1002/ejic.202200261

Abstract

2-Methylmercaptobenzohydroxamic acid (mmbHA) has been synthesized and used to form {Cu^IICl2(MeOH)[12-MCCu(II)N(mmbHA)-4]}2 ⋅ 4MeOH (1) and {Cu^II(μ2-ClO4)(MeOH)2(py)4[12-MCCu(II)N(mmbHA)-4]}ClO4 (2), a copper(II) based double-decker and a discrete metallacrown (MC) system, respectively. While 1 forms in the absence of a coordinating co-ligand, the presence of pyridine (Py) leads to a change in the coordination mode of mmbHA and a discrete MC 2 is formed. Both compounds have been structurally and magnetically characterized. The magnetic susceptibility measured from 2–300 K shows overall antiferromagnetic exchange coupling within both crown structures and the obtained coupling constants are J1=−88.0(1) cm⁻¹and J2=−64.7(3) cm⁻¹ for 1 and J1=−90.0(5) cm⁻¹ and J2=−31.1(1) cm⁻¹ for 2. However, the ratio of the coupling parameters is highly affected by the structural change.

Involved external institutions

Johannes Gutenberg-Universität Mainz (JGU)

Germany (DE)

How to cite

APA:

Gamer, C., Sundaresan, S., Carrella, L.M., & Rentschler, E. (2022). Single- vs Double-Decker Copper 12-MC-4 Metallacrown Using the Coordination Flexibility of a Soft Donor Ligand. European Journal of Inorganic Chemistry, 2022(22). https://doi.org/10.1002/ejic.202200261

MLA:

Gamer, Christoph, et al. "Single- vs Double-Decker Copper 12-MC-4 Metallacrown Using the Coordination Flexibility of a Soft Donor Ligand." European Journal of Inorganic Chemistry 2022.22 (2022).

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