Compounds of general formula [Cr7MF3(Etglu)- (O2CtBu)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 pentadeprotonated Etglu5− ligand; the chirality of N-ethyl-D-glucamine is retained in the final product. The seven CrIII 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.

A Detailed Study of the Magnetism of Chiral {Cr7M} Rings: An Investigation into Parametrization and Transferability of Parameters / Garlatti, Elena; Albring, Morten A.; Baker, Michael L.; Docherty, Rebecca J.; Mutka, Hannu; Guidi, Tatiana; Garcia Sakai, Victoria; Whitehead, George F. S.; Pritchard, Robin G.; Timco, Grigore A.; Tuna, Floriana; Amoretti, Giuseppe; Carretta, Stefano; Santini, Paolo; Lorusso, Giulia; Affronte, Marco; Mcinnes, Eric J. L.; Collison, David; Winpenny, Richard E. P.. - In: JOURNAL OF THE AMERICAN CHEMICAL SOCIETY. - ISSN 0002-7863. - STAMPA. - 136:27(2014), pp. 9763-9772. [10.1021/ja5047445]

A Detailed Study of the Magnetism of Chiral {Cr7M} Rings: An Investigation into Parametrization and Transferability of Parameters

LORUSSO, Giulia;AFFRONTE, Marco;
2014

Abstract

Compounds of general formula [Cr7MF3(Etglu)- (O2CtBu)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 pentadeprotonated Etglu5− ligand; the chirality of N-ethyl-D-glucamine is retained in the final product. The seven CrIII 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.
2014
136
27
9763
9772
A Detailed Study of the Magnetism of Chiral {Cr7M} Rings: An Investigation into Parametrization and Transferability of Parameters / Garlatti, Elena; Albring, Morten A.; Baker, Michael L.; Docherty, Rebecca J.; Mutka, Hannu; Guidi, Tatiana; Garcia Sakai, Victoria; Whitehead, George F. S.; Pritchard, Robin G.; Timco, Grigore A.; Tuna, Floriana; Amoretti, Giuseppe; Carretta, Stefano; Santini, Paolo; Lorusso, Giulia; Affronte, Marco; Mcinnes, Eric J. L.; Collison, David; Winpenny, Richard E. P.. - In: JOURNAL OF THE AMERICAN CHEMICAL SOCIETY. - ISSN 0002-7863. - STAMPA. - 136:27(2014), pp. 9763-9772. [10.1021/ja5047445]
Garlatti, Elena; Albring, Morten A.; Baker, Michael L.; Docherty, Rebecca J.; Mutka, Hannu; Guidi, Tatiana; Garcia Sakai, Victoria; Whitehead, George ...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/1060167
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