Magnetic properties of 4,4-bipiperidinediium tetrahalocuprates: crystal structures of 4,4-bipiperidinediium tetrabromocuprate(II) monohydrate and bis(4,4-bipiperidinediium) hexabromodicuprate(I)

Jan L. Wikaira; Raymond J. Butcher; Ulo Kersen; Mark M. Turnbull

doi:10.1080/00958972.2015.1116687

Magnetic properties of 4,4-bipiperidinediium tetrahalocuprates: crystal structures of 4,4-bipiperidinediium tetrabromocuprate(II) monohydrate and bis(4,4-bipiperidinediium) hexabromodicuprate(I)

Jan L. Wikaira, Raymond J. Butcher, Ulo Kersen, Mark M. Turnbull^*

^*Corresponding author for this work

Department of Chemical and Metallurgical Engineering

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

5 Citations (Scopus)

Abstract

Reaction of 4,4-bipiperidine (bipip) with copper(II) bromide in aqueous HBr yielded the salts (H(2)bipip)CuBr4H2O (2) and (H(2)bipip)(2)Cu2Br6 (3). Compound 2 crystallizes in the space group P2(1)/m and forms alternating layers of the H(2)bipip cations and CuBr4 anions with the water molecules located in the anionic layer. Compound 3 contains Cu(I) and crystallizes in the space group P2(1)/c and comprises stacks of H(2)bipip cations alternating with stacks of Cu2Br64- anions. Temperature-dependent magnetic measurements on 2 and its chloride analog, 1, show distinctly different behaviors supported by the two-halide superexchange pathway. The chloride compound (1) is best described as weakly interacting antiferromagnetic dimers (J similar to-13K), while the bromide compound (2) exhibits very weak ferromagnetic interactions best modeled as a uniform chain with J=2.45 (9)K (using the H=-J(AB)sigma SASB Hamiltonian).

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Original language	English
Pages (from-to)	57-71
Number of pages	15
Journal	Journal of Coordination Chemistry
Volume	69
Issue number	1
DOIs	https://doi.org/10.1080/00958972.2015.1116687
Publication status	Published - 2016
MoE publication type	A1 Journal article-refereed

Keywords

Tetrahalocuprate(II)
magnetism
crystal structure
Cu(I) Halide
4
4-Bipiperidine
MOLECULAR MAGNETISM
COPPER(II)
HALIDE
COMPLEXES
EXCHANGE
BEHAVIOR
BROMIDE
LADDER
CHAIN
SALTS

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10.1080/00958972.2015.1116687

CCDC 1400760: Experimental Crystal Structure Determination
Butcher, R. J. (Contributor), Kersen, U. (Creator), Turnbull, M. M. (Contributor) & Wikaira, J. L. (Contributor), Cambridge Crystallographic Data Centre , 1 Jan 2016
DOI: 10.5517/ccdc.csd.cc1j0lty, http://www.ccdc.cam.ac.uk/services/structure_request?id=doi:10.5517/ccdc.csd.cc1j0lty&sid=DataCite
Dataset
CCDC 1400759: Experimental Crystal Structure Determination
Butcher, R. J. (Contributor), Kersen, U. (Creator), Turnbull, M. M. (Contributor) & Wikaira, J. L. (Contributor), Cambridge Crystallographic Data Centre , 1 Jan 2016
DOI: 10.5517/ccdc.csd.cc1j0lsx, http://www.ccdc.cam.ac.uk/services/structure_request?id=doi:10.5517/ccdc.csd.cc1j0lsx&sid=DataCite
Dataset

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@article{58b7671a977c436699a9d5f286627478,

title = "Magnetic properties of 4,4-bipiperidinediium tetrahalocuprates: crystal structures of 4,4-bipiperidinediium tetrabromocuprate(II) monohydrate and bis(4,4-bipiperidinediium) hexabromodicuprate(I)",

abstract = "Reaction of 4,4-bipiperidine (bipip) with copper(II) bromide in aqueous HBr yielded the salts (H(2)bipip)CuBr4H2O (2) and (H(2)bipip)(2)Cu2Br6 (3). Compound 2 crystallizes in the space group P2(1)/m and forms alternating layers of the H(2)bipip cations and CuBr4 anions with the water molecules located in the anionic layer. Compound 3 contains Cu(I) and crystallizes in the space group P2(1)/c and comprises stacks of H(2)bipip cations alternating with stacks of Cu2Br64- anions. Temperature-dependent magnetic measurements on 2 and its chloride analog, 1, show distinctly different behaviors supported by the two-halide superexchange pathway. The chloride compound (1) is best described as weakly interacting antiferromagnetic dimers (J similar to-13K), while the bromide compound (2) exhibits very weak ferromagnetic interactions best modeled as a uniform chain with J=2.45 (9)K (using the H=-J(AB)sigma SASB Hamiltonian).[GRAPHICS].",

keywords = "Tetrahalocuprate(II), magnetism, crystal structure, Cu(I) Halide, 4, 4-Bipiperidine, MOLECULAR MAGNETISM, COPPER(II), HALIDE, COMPLEXES, EXCHANGE, BEHAVIOR, BROMIDE, LADDER, CHAIN, SALTS",

author = "Wikaira, {Jan L.} and Butcher, {Raymond J.} and Ulo Kersen and Turnbull, {Mark M.}",

year = "2016",

doi = "10.1080/00958972.2015.1116687",

language = "English",

volume = "69",

pages = "57--71",

journal = "Journal of Coordination Chemistry",

issn = "0095-8972",

publisher = "Taylor & Francis",

number = "1",

}

Magnetic properties of 4,4-bipiperidinediium tetrahalocuprates: crystal structures of 4,4-bipiperidinediium tetrabromocuprate(II) monohydrate and bis(4,4-bipiperidinediium) hexabromodicuprate(I). / Wikaira, Jan L.; Butcher, Raymond J.; Kersen, Ulo et al.
In: Journal of Coordination Chemistry, Vol. 69, No. 1, 2016, p. 57-71.

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

TY - JOUR

T1 - Magnetic properties of 4,4-bipiperidinediium tetrahalocuprates: crystal structures of 4,4-bipiperidinediium tetrabromocuprate(II) monohydrate and bis(4,4-bipiperidinediium) hexabromodicuprate(I)

AU - Wikaira, Jan L.

AU - Butcher, Raymond J.

AU - Kersen, Ulo

AU - Turnbull, Mark M.

PY - 2016

Y1 - 2016

N2 - Reaction of 4,4-bipiperidine (bipip) with copper(II) bromide in aqueous HBr yielded the salts (H(2)bipip)CuBr4H2O (2) and (H(2)bipip)(2)Cu2Br6 (3). Compound 2 crystallizes in the space group P2(1)/m and forms alternating layers of the H(2)bipip cations and CuBr4 anions with the water molecules located in the anionic layer. Compound 3 contains Cu(I) and crystallizes in the space group P2(1)/c and comprises stacks of H(2)bipip cations alternating with stacks of Cu2Br64- anions. Temperature-dependent magnetic measurements on 2 and its chloride analog, 1, show distinctly different behaviors supported by the two-halide superexchange pathway. The chloride compound (1) is best described as weakly interacting antiferromagnetic dimers (J similar to-13K), while the bromide compound (2) exhibits very weak ferromagnetic interactions best modeled as a uniform chain with J=2.45 (9)K (using the H=-J(AB)sigma SASB Hamiltonian).[GRAPHICS].

AB - Reaction of 4,4-bipiperidine (bipip) with copper(II) bromide in aqueous HBr yielded the salts (H(2)bipip)CuBr4H2O (2) and (H(2)bipip)(2)Cu2Br6 (3). Compound 2 crystallizes in the space group P2(1)/m and forms alternating layers of the H(2)bipip cations and CuBr4 anions with the water molecules located in the anionic layer. Compound 3 contains Cu(I) and crystallizes in the space group P2(1)/c and comprises stacks of H(2)bipip cations alternating with stacks of Cu2Br64- anions. Temperature-dependent magnetic measurements on 2 and its chloride analog, 1, show distinctly different behaviors supported by the two-halide superexchange pathway. The chloride compound (1) is best described as weakly interacting antiferromagnetic dimers (J similar to-13K), while the bromide compound (2) exhibits very weak ferromagnetic interactions best modeled as a uniform chain with J=2.45 (9)K (using the H=-J(AB)sigma SASB Hamiltonian).[GRAPHICS].

KW - Tetrahalocuprate(II)

KW - magnetism

KW - crystal structure

KW - Cu(I) Halide

KW - 4

KW - 4-Bipiperidine

KW - MOLECULAR MAGNETISM

KW - COPPER(II)

KW - HALIDE

KW - COMPLEXES

KW - EXCHANGE

KW - BEHAVIOR

KW - BROMIDE

KW - LADDER

KW - CHAIN

KW - SALTS

U2 - 10.1080/00958972.2015.1116687

DO - 10.1080/00958972.2015.1116687

M3 - Article

SN - 0095-8972

VL - 69

SP - 57

EP - 71

JO - Journal of Coordination Chemistry

JF - Journal of Coordination Chemistry

IS - 1

ER -

Magnetic properties of 4,4-bipiperidinediium tetrahalocuprates: crystal structures of 4,4-bipiperidinediium tetrabromocuprate(II) monohydrate and bis(4,4-bipiperidinediium) hexabromodicuprate(I)

Abstract

Keywords

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Datasets

CCDC 1400760: Experimental Crystal Structure Determination

CCDC 1400759: Experimental Crystal Structure Determination

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