Wells-Dawson cages as molecular refrigerants

Eufemio Moreno Pineda; Floriana Tuna; Yan Zhen Zheng; Richard E P Winpenny; Eric J L McInnes

doi:10.1021/ic402296t

Wells-Dawson cages as molecular refrigerants

Eufemio Moreno Pineda, Floriana Tuna, Yan Zhen Zheng, Richard E P Winpenny, Eric J L McInnes

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

Abstract

Five clusters with the general formula [Ni6Gd 6(μ3-OH)2(μ2-OAc) 2(O3PR)6(O2CtBu) 16], where R = methyl (1), phenyl (2), n-hexyl (3), benzyl (4), n-octyl (5), have been prepared. All of the clusters have a {Ni 6Gd6P6} core that can be related to the Wells-Dawson ion. We have also prepared analogues where the gadolinium is replaced with diamagnetic yttrium: [Ni6Y6(μ 3-OH)2(μ2-OAc)2(O 3PR)6(O2CtBu)16] (R = methyl (6), n-hexyl (7), benzyl (8), n-octyl (9)), allowing the magnetic exchange within the {Ni3} units to be analyzed by modeling as the sum of two noninteracting isosceles triangles. The variation in the magnetic entropy changes for magnetization (-ΔSM) among compounds 1-5 could be attributed not only to the molecular weight of the compounds but also to intramolecular magnetic interactions. © 2013 American Chemical Society.

Original language	English
Pages (from-to)	13702-13707
Number of pages	5
Journal	Inorganic Chemistry: including bioinorganic chemistry
Volume	52
Issue number	23
DOIs	https://doi.org/10.1021/ic402296t
Publication status	Published - 2 Dec 2013

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10.1021/ic402296t

CCDC 805050: Experimental Crystal Structure Determination
Zheng, Y. Z. (Contributor), Evangelisti, M. (Contributor) & Winpenny, R. (Contributor), Cambridge Crystallographic Data Centre, 1 Jan 2011
DOI: 10.5517/ccw0qcy, http://www.ccdc.cam.ac.uk/services/structure_request?id=doi:10.5517/ccw0qcy&sid=DataCite
Dataset
CCDC 958737: Experimental Crystal Structure Determination
Moreno Pineda, E. (Contributor), Tuna, F. (Contributor), Zheng, Y. Z. (Contributor), Winpenny, R. (Contributor) & Mcinnes, E. (Contributor), Cambridge Crystallographic Data Centre, 1 Jan 2013
DOI: 10.5517/cc115n0w, http://www.ccdc.cam.ac.uk/services/structure_request?id=doi:10.5517/cc115n0w&sid=DataCite
Dataset
CCDC 958738: Experimental Crystal Structure Determination
Moreno Pineda, E. (Contributor), Tuna, F. (Contributor), Zheng, Y. Z. (Contributor), Winpenny, R. (Contributor) & Mcinnes, E. (Contributor), Cambridge Crystallographic Data Centre, 1 Jan 2013
DOI: 10.5517/cc115n1x, http://www.ccdc.cam.ac.uk/services/structure_request?id=doi:10.5517/cc115n1x&sid=DataCite
Dataset

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@article{11acce0f97d840ab9fd936e680643f8c,

title = "Wells-Dawson cages as molecular refrigerants",

abstract = "Five clusters with the general formula [Ni6Gd 6(μ3-OH)2(μ2-OAc) 2(O3PR)6(O2CtBu) 16], where R = methyl (1), phenyl (2), n-hexyl (3), benzyl (4), n-octyl (5), have been prepared. All of the clusters have a {Ni 6Gd6P6} core that can be related to the Wells-Dawson ion. We have also prepared analogues where the gadolinium is replaced with diamagnetic yttrium: [Ni6Y6(μ 3-OH)2(μ2-OAc)2(O 3PR)6(O2CtBu)16] (R = methyl (6), n-hexyl (7), benzyl (8), n-octyl (9)), allowing the magnetic exchange within the {Ni3} units to be analyzed by modeling as the sum of two noninteracting isosceles triangles. The variation in the magnetic entropy changes for magnetization (-ΔSM) among compounds 1-5 could be attributed not only to the molecular weight of the compounds but also to intramolecular magnetic interactions. {\textcopyright} 2013 American Chemical Society.",

author = "Pineda, {Eufemio Moreno} and Floriana Tuna and Zheng, {Yan Zhen} and Winpenny, {Richard E P} and McInnes, {Eric J L}",

year = "2013",

month = dec,

day = "2",

doi = "10.1021/ic402296t",

language = "English",

volume = "52",

pages = "13702--13707",

journal = "Inorganic Chemistry: including bioinorganic chemistry ",

issn = "0020-1669",

publisher = "American Chemical Society",

number = "23",

}

TY - JOUR

T1 - Wells-Dawson cages as molecular refrigerants

AU - Pineda, Eufemio Moreno

AU - Tuna, Floriana

AU - Zheng, Yan Zhen

AU - Winpenny, Richard E P

AU - McInnes, Eric J L

PY - 2013/12/2

Y1 - 2013/12/2

N2 - Five clusters with the general formula [Ni6Gd 6(μ3-OH)2(μ2-OAc) 2(O3PR)6(O2CtBu) 16], where R = methyl (1), phenyl (2), n-hexyl (3), benzyl (4), n-octyl (5), have been prepared. All of the clusters have a {Ni 6Gd6P6} core that can be related to the Wells-Dawson ion. We have also prepared analogues where the gadolinium is replaced with diamagnetic yttrium: [Ni6Y6(μ 3-OH)2(μ2-OAc)2(O 3PR)6(O2CtBu)16] (R = methyl (6), n-hexyl (7), benzyl (8), n-octyl (9)), allowing the magnetic exchange within the {Ni3} units to be analyzed by modeling as the sum of two noninteracting isosceles triangles. The variation in the magnetic entropy changes for magnetization (-ΔSM) among compounds 1-5 could be attributed not only to the molecular weight of the compounds but also to intramolecular magnetic interactions. © 2013 American Chemical Society.

AB - Five clusters with the general formula [Ni6Gd 6(μ3-OH)2(μ2-OAc) 2(O3PR)6(O2CtBu) 16], where R = methyl (1), phenyl (2), n-hexyl (3), benzyl (4), n-octyl (5), have been prepared. All of the clusters have a {Ni 6Gd6P6} core that can be related to the Wells-Dawson ion. We have also prepared analogues where the gadolinium is replaced with diamagnetic yttrium: [Ni6Y6(μ 3-OH)2(μ2-OAc)2(O 3PR)6(O2CtBu)16] (R = methyl (6), n-hexyl (7), benzyl (8), n-octyl (9)), allowing the magnetic exchange within the {Ni3} units to be analyzed by modeling as the sum of two noninteracting isosceles triangles. The variation in the magnetic entropy changes for magnetization (-ΔSM) among compounds 1-5 could be attributed not only to the molecular weight of the compounds but also to intramolecular magnetic interactions. © 2013 American Chemical Society.

U2 - 10.1021/ic402296t

DO - 10.1021/ic402296t

M3 - Article

SN - 0020-1669

VL - 52

SP - 13702

EP - 13707

JO - Inorganic Chemistry: including bioinorganic chemistry

JF - Inorganic Chemistry: including bioinorganic chemistry

IS - 23

ER -

Wells-Dawson cages as molecular refrigerants

Abstract

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Datasets

CCDC 805050: Experimental Crystal Structure Determination

CCDC 958737: Experimental Crystal Structure Determination

CCDC 958738: Experimental Crystal Structure Determination

Cite this