Single Isomer Heterometallic {CrIII6MII2} Rings Templated by Tetramethylammonium

Rajeh Alotaibi; Edmund Little; Jonathan M. Fowler; Adam Brookfield; Ralph W. Adams; Amritroop Achari; Grigore A. Timco; George F. S. Whitehead; Nicholas F. Chilton; Rahul R. Nair; David Collison; Richard E. P. Winpenny

doi:10.1021/acs.inorgchem.1c02342

Single Isomer Heterometallic {Cr^III₆M^II₂} Rings Templated by Tetramethylammonium

Rajeh Alotaibi, Edmund Little, Jonathan M. Fowler, Adam Brookfield, Ralph W. Adams, Amritroop Achari, Grigore A. Timco, George F. S. Whitehead, Nicholas F. Chilton, Rahul R. Nair, David Collison^*, Richard E. P. Winpenny^*

^*Corresponding author for this work

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

5 Citations (Scopus)

Abstract

A family of heterometallic rings [Me4N]2[CrIII6MII2F8(O2CtBu)16] is reported using tetramethylammonium hydroxide pentahydrate as the source of a template, where M = Zn, Mn, Ni, and Co. The metal cores are octagons with metal–metal edges bridged by one fluoride and two carboxylate ligands. The divalent metal ions are found ordered at positions 1 and 5 in the octagon. The tetramethylammonium cations are above and below the metal plane of the ring in the crystal structure. Magnetic studies show antiferromagnetic coupling between the paramagnetic metal ions present, leading to paramagnetic ground states in each case. 1H NMR spectroscopy confirms that the structure of the {CrIII6CoII2} ring exists in solution, and electron paramagnetic resonance spectroscopy confirms the magnetic structure of the other three rings.

Original language	English
Pages (from-to)	15675-15685
Number of pages	11
Journal	Inorganic Chemistry
Volume	60
Issue number	20
Early online date	6 Oct 2021
DOIs	https://doi.org/10.1021/acs.inorgchem.1c02342
Publication status	Published - 18 Oct 2021
Externally published	Yes

Access to Document

10.1021/acs.inorgchem.1c02342

https://pubs.acs.org/doi/10.1021/acs.inorgchem.1c02342

Cite this

@article{f94c7c6449cb4d16b8c1c2897f08e15f,

title = "Single Isomer Heterometallic {CrIII6MII2} Rings Templated by Tetramethylammonium",

abstract = "A family of heterometallic rings [Me4N]2[CrIII6MII2F8(O2CtBu)16] is reported using tetramethylammonium hydroxide pentahydrate as the source of a template, where M = Zn, Mn, Ni, and Co. The metal cores are octagons with metal–metal edges bridged by one fluoride and two carboxylate ligands. The divalent metal ions are found ordered at positions 1 and 5 in the octagon. The tetramethylammonium cations are above and below the metal plane of the ring in the crystal structure. Magnetic studies show antiferromagnetic coupling between the paramagnetic metal ions present, leading to paramagnetic ground states in each case. 1H NMR spectroscopy confirms that the structure of the {CrIII6CoII2} ring exists in solution, and electron paramagnetic resonance spectroscopy confirms the magnetic structure of the other three rings.",

keywords = "nosource",

author = "Rajeh Alotaibi and Edmund Little and Fowler, {Jonathan M.} and Adam Brookfield and Adams, {Ralph W.} and Amritroop Achari and Timco, {Grigore A.} and Whitehead, {George F. S.} and Chilton, {Nicholas F.} and Nair, {Rahul R.} and David Collison and Winpenny, {Richard E. P.}",

year = "2021",

month = oct,

day = "18",

doi = "10.1021/acs.inorgchem.1c02342",

language = "English",

volume = "60",

pages = "15675--15685",

journal = "Inorganic Chemistry",

issn = "0020-1669",

publisher = "American Chemical Society",

number = "20",

}

TY - JOUR

T1 - Single Isomer Heterometallic {CrIII6MII2} Rings Templated by Tetramethylammonium

AU - Alotaibi, Rajeh

AU - Little, Edmund

AU - Fowler, Jonathan M.

AU - Brookfield, Adam

AU - Adams, Ralph W.

AU - Achari, Amritroop

AU - Timco, Grigore A.

AU - Whitehead, George F. S.

AU - Chilton, Nicholas F.

AU - Nair, Rahul R.

AU - Collison, David

AU - Winpenny, Richard E. P.

PY - 2021/10/18

Y1 - 2021/10/18

N2 - A family of heterometallic rings [Me4N]2[CrIII6MII2F8(O2CtBu)16] is reported using tetramethylammonium hydroxide pentahydrate as the source of a template, where M = Zn, Mn, Ni, and Co. The metal cores are octagons with metal–metal edges bridged by one fluoride and two carboxylate ligands. The divalent metal ions are found ordered at positions 1 and 5 in the octagon. The tetramethylammonium cations are above and below the metal plane of the ring in the crystal structure. Magnetic studies show antiferromagnetic coupling between the paramagnetic metal ions present, leading to paramagnetic ground states in each case. 1H NMR spectroscopy confirms that the structure of the {CrIII6CoII2} ring exists in solution, and electron paramagnetic resonance spectroscopy confirms the magnetic structure of the other three rings.

AB - A family of heterometallic rings [Me4N]2[CrIII6MII2F8(O2CtBu)16] is reported using tetramethylammonium hydroxide pentahydrate as the source of a template, where M = Zn, Mn, Ni, and Co. The metal cores are octagons with metal–metal edges bridged by one fluoride and two carboxylate ligands. The divalent metal ions are found ordered at positions 1 and 5 in the octagon. The tetramethylammonium cations are above and below the metal plane of the ring in the crystal structure. Magnetic studies show antiferromagnetic coupling between the paramagnetic metal ions present, leading to paramagnetic ground states in each case. 1H NMR spectroscopy confirms that the structure of the {CrIII6CoII2} ring exists in solution, and electron paramagnetic resonance spectroscopy confirms the magnetic structure of the other three rings.

KW - nosource

U2 - 10.1021/acs.inorgchem.1c02342

DO - 10.1021/acs.inorgchem.1c02342

M3 - Article

SN - 0020-1669

VL - 60

SP - 15675

EP - 15685

JO - Inorganic Chemistry

JF - Inorganic Chemistry

IS - 20

ER -

Single Isomer Heterometallic {CrIII6MII2} Rings Templated by Tetramethylammonium

Abstract

Access to Document

Fingerprint

Cite this

Single Isomer Heterometallic {Cr^III₆M^II₂} Rings Templated by Tetramethylammonium