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

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^*

^*Corresponding author for this work

Universitat Bielefeld

Research output: Contribution to journal › Article › peer-review

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.

Original language	English
Pages (from-to)	20-23
Number of pages	4
Journal	Dalton Transactions
Volume	52
Issue number	1
DOIs	https://doi.org/10.1039/d2dt03368b
Publication status	Published - 30 Nov 2022

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

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 = ZnII or CuII) where the cyclam coordinates to the MII 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 CrIII rings.",

author = "Rajeh Alotaibi and Adam Brookfield and Fowler, {Jonathan M.} and Whitehead, {George F.S.} and Lockyer, {Selena J.} and Timco, {Grigore A.} and David Collison and J{\"u}rgen Schnack and Winpenny, {Richard E.P.}",

note = "Publisher Copyright: {\textcopyright} 2023 The Royal Society of Chemistry.",

year = "2022",

month = nov,

day = "30",

doi = "10.1039/d2dt03368b",

language = "English",

volume = "52",

pages = "20--23",

journal = "Dalton Transactions ",

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publisher = "Royal Society of Chemistry",

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TY - JOUR

T1 - Templating metallocycles with a macrocycle

T2 - synthesis, structures and magnetic studies of {Cr11M2} complexes

AU - Alotaibi, Rajeh

AU - Brookfield, Adam

AU - Fowler, Jonathan M.

AU - Whitehead, George F.S.

AU - Lockyer, Selena J.

AU - Timco, Grigore A.

AU - Collison, David

AU - Schnack, Jürgen

AU - Winpenny, Richard E.P.

PY - 2022/11/30

Y1 - 2022/11/30

N2 - Addition of 1,4,8,11-tetrazacyclotetradecane (cyclam) to a reaction that produces octametallic rings when simpler amines are used, produces {Cr11M2} “pretzels” (M = ZnII or CuII) where the cyclam coordinates to the MII 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 CrIII rings.

AB - Addition of 1,4,8,11-tetrazacyclotetradecane (cyclam) to a reaction that produces octametallic rings when simpler amines are used, produces {Cr11M2} “pretzels” (M = ZnII or CuII) where the cyclam coordinates to the MII 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 CrIII rings.

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U2 - 10.1039/d2dt03368b

DO - 10.1039/d2dt03368b

M3 - Article

C2 - 36477464

AN - SCOPUS:85143977240

SN - 1477-9226

VL - 52

SP - 20

EP - 23

JO - Dalton Transactions

JF - Dalton Transactions

IS - 1

ER -

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

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

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