title: Heterometallic cubane single-molecule magnets.
abstract: Two new heterometallic cubane molecules have been synthesized. High-frequency electron paramagnetic resonance and magnetization measurements indicate that [Mn(3)Ni(hmp)(3)O(N(3))(3)(C(7)H(5)O(2))(3)] (1) displays a well-isolated S = 5 ground state (DeltaE > 120 K), with g = 2.0, D = -0.23 cm(-1), and ferromagnetic Mn-Mn exchange interactions competing with antiferromagnetic Ni-Mn interactions. [Mn(3)Zn(hmp)(3)O(N(3))(3)(C(3)H(5)O(2))(3)] (2) possesses a S = 6 ground state (DeltaE > 105 K), with g = 2.0, D = -0.14 cm(-1), and ferromagnetic Mn-Mn exchange interactions. Magnetization vs magnetic field data for oriented single crystals of 1 and 2 indicate that both complexes are single-molecule magnets.
authors.affiliation: Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093-0358, USA.
authors.forename: Patrick L
authors.initials: PL
authors.lastname: Feng
authors.forename: Christopher C
authors.initials: CC
authors.lastname: Beedle
authors.forename: Wolfgang
authors.initials: W
authors.lastname: Wernsdorfer
authors.forename: Changhyun
authors.initials: C
authors.lastname: Koo
authors.forename: Motohiro
authors.initials: M
authors.lastname: Nakano
authors.forename: Stephen
authors.initials: S
authors.lastname: Hill
authors.forename: David N
authors.initials: DN
authors.lastname: Hendrickson