Templating metallocycles with a macrocycle: synthesis, structures and magnetic studies of {Cr11M2} complexes

Rajeh Alotaibi; Adam Brookfield; Jonathan M. Fowler; George F. S. Whitehead; Selena J. Lockyer; Grigore A. Timco; David Collison; Jürgen Schnack; Richard E. P. Winpenny

doi:10.1039/D2DT03368B

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Templating metallocycles with a macrocycle: synthesis, structures and magnetic studies of {Cr₁₁M₂} complexes†

Rajeh Alotaibi,^ab Adam Brookfield,^a Jonathan M. Fowler,^a George F. S. Whitehead,

^a Selena J. Lockyer,^a Grigore A. Timco,

^a David Collison,*^a Jürgen Schnack

^c and Richard E. P. Winpenny

*^a

Author affiliations

* Corresponding authors

^a Department of Chemistry, The University of Manchester, Oxford Road, Manchester, UK
E-mail: richard.winpenny@manchester.ac.uk

^b Department of Chemistry, King Saud University, Riyadh 11451, Saudi Arabia

^c Faculty of Physics, P.O. Box 100131, Bielefeld University, D-33501 Bielefeld, Germany

Abstract

Addition of 1,4,8,11-tetrazacyclotetradecane (cyclam) to a reaction that produces octametallic rings when simpler amines are used, produces {Cr₁₁M₂} “pretzels” (M = Zn^II or Cu^II) where the cyclam coordinates to the M^II ion which then sits at the centre of a twelve-metal macrocycle. Magnetic studies were fitted using the finite-temperature Lanczos method (FTLM), and the results demonstrate that exchange interactions are transferable from previous exchange-coupled Cr^III rings.

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Article information

DOI: https://doi.org/10.1039/D2DT03368B
Article type: Communication
Submitted: 17 Oct 2022
Accepted: 30 Nov 2022
First published: 30 Nov 2022
This article is Open Access

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Dalton Trans., 2023,52, 20-23

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Templating metallocycles with a macrocycle: synthesis, structures and magnetic studies of {Cr₁₁M₂} complexes

R. Alotaibi, A. Brookfield, J. M. Fowler, G. F. S. Whitehead, S. J. Lockyer, G. A. Timco, D. Collison, J. Schnack and R. E. P. Winpenny, Dalton Trans., 2023, 52, 20 DOI: 10.1039/D2DT03368B

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