Abstrakti
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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Alkuperäiskieli | Englanti |
---|---|
Sivut | 57-71 |
Sivumäärä | 15 |
Julkaisu | Journal of Coordination Chemistry |
Vuosikerta | 69 |
Numero | 1 |
DOI - pysyväislinkit | |
Tila | Julkaistu - 2016 |
OKM-julkaisutyyppi | A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä |
Sormenjälki
Sukella tutkimusaiheisiin 'Magnetic properties of 4,4-bipiperidinediium tetrahalocuprates: crystal structures of 4,4-bipiperidinediium tetrabromocuprate(II) monohydrate and bis(4,4-bipiperidinediium) hexabromodicuprate(I)'. Ne muodostavat yhdessä ainutlaatuisen sormenjäljen.Tietoaineistot
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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 tammik. 2016
DOI - pysyväislinkki: 10.5517/ccdc.csd.cc1j0lty, http://www.ccdc.cam.ac.uk/services/structure_request?id=doi:10.5517/ccdc.csd.cc1j0lty&sid=DataCite
Tietoaineisto: Dataset
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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 tammik. 2016
DOI - pysyväislinkki: 10.5517/ccdc.csd.cc1j0lsx, http://www.ccdc.cam.ac.uk/services/structure_request?id=doi:10.5517/ccdc.csd.cc1j0lsx&sid=DataCite
Tietoaineisto: Dataset