title: A detailed study of the magnetism of chiral {Cr₇M} rings: an investigation into parametrization and transferability of parameters.
abstract: Compounds of general formula [Cr7MF3(Etglu)(O2C(t)Bu)15(Phpy)] [H5Etglu = N-ethyl-d-glucamine; Phpy = 4-phenylpyridine; M = Zn (1), Mn (2), Ni (3)] have been prepared. The structures contain an irregular octagon of metal sites formed around the penta-deprotonated Etglu(5-) ligand; the chirality of N-ethyl-d-glucamine is retained in the final product. The seven Cr(III) sites have a range of coordination environments, and the divalent metal site is crystallographically identified and has a Phpy ligand attached to it. By using complementary experimental techniques, including magnetization and specific heat measurements, inelastic neutron scattering, and electron paramagnetic resonance spectroscopy, we have investigated the magnetic features of this family of {Cr7M} rings. Microscopic parameters of the spin Hamiltonian have been determined as a result of best fits of the different experimental data, allowing a direct comparison with corresponding parameters found in the parent compounds. We examine whether these parameters can be transferred between compounds and compare them with those of an earlier family of heterometallic rings.
authors: Dipartimento di Fisica e Scienze della Terra, Università di Parma , via G.P. Usberti 7/a, 43123 Parma, Italy.
authors: Elena
authors: E
authors: Garlatti
authors: Morten A
authors: MA
authors: Albring
authors: Michael L
authors: ML
authors: Baker
authors: Rebecca J
authors: RJ
authors: Docherty
authors: Hannu
authors: H
authors: Mutka
authors: Tatiana
authors: T
authors: Guidi
authors: Victoria
authors: V
authors: Garcia Sakai
authors: George F S
authors: GF
authors: Whitehead
authors: Robin G
authors: RG
authors: Pritchard
authors: Grigore A
authors: GA
authors: Timco
authors: Floriana
authors: F
authors: Tuna
authors: Giuseppe
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authors: Amoretti
authors: Stefano
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authors: Carretta
authors: Paolo
authors: P
authors: Santini
authors: Giulia
authors: G
authors: Lorusso
authors: Marco
authors: M
authors: Affronte
authors: Eric J L
authors: EJ
authors: McInnes
authors: David
authors: D
authors: Collison
authors: Richard E P
authors: RE
authors: Winpenny