Templating metallocycles with a macrocycle: synthesis, structures and magnetic studies of {Cr(11)M(2)} complexes

Addition of 1,4,8,11-tetrazacyclotetradecane (cyclam) to a reaction that produces octametallic rings when simpler amines are used, produces {Cr(11)M(2)} “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. Magneti...

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Autores principales: Alotaibi, Rajeh, Brookfield, Adam, Fowler, Jonathan M., Whitehead, George F. S., Lockyer, Selena J., Timco, Grigore A., Collison, David, Schnack, Jürgen, Winpenny, Richard E. P.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2022
Materias:
Chemistry
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9764323/
https://www.ncbi.nlm.nih.gov/pubmed/36477464
http://dx.doi.org/10.1039/d2dt03368b
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author Alotaibi, Rajeh
Brookfield, Adam
Fowler, Jonathan M.
Whitehead, George F. S.
Lockyer, Selena J.
Timco, Grigore A.
Collison, David
Schnack, Jürgen
Winpenny, Richard E. P.
author_facet Alotaibi, Rajeh
Brookfield, Adam
Fowler, Jonathan M.
Whitehead, George F. S.
Lockyer, Selena J.
Timco, Grigore A.
Collison, David
Schnack, Jürgen
Winpenny, Richard E. P.
author_sort Alotaibi, Rajeh
collection PubMed
description Addition of 1,4,8,11-tetrazacyclotetradecane (cyclam) to a reaction that produces octametallic rings when simpler amines are used, produces {Cr(11)M(2)} “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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spelling pubmed-97643232023-01-04 Templating metallocycles with a macrocycle: synthesis, structures and magnetic studies of {Cr(11)M(2)} complexes Alotaibi, Rajeh Brookfield, Adam Fowler, Jonathan M. Whitehead, George F. S. Lockyer, Selena J. Timco, Grigore A. Collison, David Schnack, Jürgen Winpenny, Richard E. P. Dalton Trans Chemistry Addition of 1,4,8,11-tetrazacyclotetradecane (cyclam) to a reaction that produces octametallic rings when simpler amines are used, produces {Cr(11)M(2)} “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. The Royal Society of Chemistry 2022-11-30 /pmc/articles/PMC9764323/ /pubmed/36477464 http://dx.doi.org/10.1039/d2dt03368b Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by/3.0/
spellingShingle Chemistry
Alotaibi, Rajeh
Brookfield, Adam
Fowler, Jonathan M.
Whitehead, George F. S.
Lockyer, Selena J.
Timco, Grigore A.
Collison, David
Schnack, Jürgen
Winpenny, Richard E. P.
Templating metallocycles with a macrocycle: synthesis, structures and magnetic studies of {Cr(11)M(2)} complexes
title Templating metallocycles with a macrocycle: synthesis, structures and magnetic studies of {Cr(11)M(2)} complexes
title_full Templating metallocycles with a macrocycle: synthesis, structures and magnetic studies of {Cr(11)M(2)} complexes
title_fullStr Templating metallocycles with a macrocycle: synthesis, structures and magnetic studies of {Cr(11)M(2)} complexes
title_full_unstemmed Templating metallocycles with a macrocycle: synthesis, structures and magnetic studies of {Cr(11)M(2)} complexes
title_short Templating metallocycles with a macrocycle: synthesis, structures and magnetic studies of {Cr(11)M(2)} complexes
title_sort templating metallocycles with a macrocycle: synthesis, structures and magnetic studies of {cr(11)m(2)} complexes
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9764323/
https://www.ncbi.nlm.nih.gov/pubmed/36477464
http://dx.doi.org/10.1039/d2dt03368b
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