Baker, Michael L.; Piligkos, Stergios; Bianchi, Alberto; Carretta, Stefano; Collison, David; McDouall, Joseph J. W.; McInnes, Eric J. L.; Mutka, Hannu; Timco, Grigore A.; Tuna, Floriana; Vadivelu, Prabha; Weihe, Hogni; Guedel, Hans U.; Winpenny, Richard E. P. (2011). Modification of the magnetic properties of a heterometallic wheel by inclusion of a Jahn-Teller distorted Cu(II) ion. Dalton transactions, 40(34), pp. 8533-8539. Cambridge: Royal Society of Chemistry 10.1039/c1dt10547g
Full text not available from this repository.An investigation into the physical consequences of including a Jahn-Teller distorted Cu(II) ion within an antiferromagnetically coupled ring, [R(2)NH(2)][Cr(7)CuF(8)((O(2)C(t)Bu)(16))] is reported. Inelastic neutron scattering (INS) and electron paramagnetic resonance (EPR) spectroscopic data are simulated using a microscopic spin Hamiltonian, and show that the two Cr-Cu exchange interactions must be inequivalent. One Cr-Cu exchange is found to be antiferromagnetic and the other ferromagnetic. The geometry of the Jahn-Teller elongation is deduced from these results, and shows that a Jahn-Teller elongation axis must lie in the plane of the Cr(7)Cu wheel; the elongation is not observed by X-ray crystallography, due to positional disorder of the Cu site within the wheel. An electronic structure calculation confirms the structural distortion of the Cu site.
Item Type: |
Journal Article (Original Article) |
|---|---|
Division/Institute: |
08 Faculty of Science > Department of Chemistry, Biochemistry and Pharmaceutical Sciences (DCBP) |
UniBE Contributor: |
Güdel-Zahler, Hans-Ulrich |
ISSN: |
1477-9226 |
Publisher: |
Royal Society of Chemistry |
Language: |
English |
Submitter: |
Factscience Import |
Date Deposited: |
04 Oct 2013 14:26 |
Last Modified: |
02 Mar 2023 23:21 |
Publisher DOI: |
10.1039/c1dt10547g |
Web of Science ID: |
000293895800010 |
URI: |
https://boris.unibe.ch/id/eprint/9523 (FactScience: 215272) |
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