Low-temperature Magnetic Study of Hexaaquadihydroxobis(1,1,1-trifluoro-2,4,6-heptanetrionato)trinickel(II), a Linear Trinuclear Nickel(II) Triketonate
The magnetic properties of Ni 3(TFDAA) 2(OH) 2(H 2O) 6 (TFDAA = 1,1,1-trifluoro-2,4,6-heptanetrionato) have been measured from 4.38 to 296 K and evaluated by using the Heisenberg-Dirac-Van Vleck Hamiltonian to determine the magnitude and nature of the magnetic coupling in this linear trimeric triketonate complex. The results indicate that adjacent nickel(II) ions are ferromagnetically coupled with a J 12 value of 10 cm -1. The terminal nickel(II) ions are antiferromagnetically coupled with a J 13 value of -6 cm -1. The best fit g value is 2.285, and the trimer has an S′ = 3 ground state. The J 12, J 13, and g parameters are highly correlated. The magnetic coupling is discussed in terms of the trinuclear structure and related to similar complexes. © 1982 American Chemical Society.
G. J. Long et al., "Low-temperature Magnetic Study of Hexaaquadihydroxobis(1,1,1-trifluoro-2,4,6-heptanetrionato)trinickel(II), a Linear Trinuclear Nickel(II) Triketonate," Inorganic Chemistry, American Chemical Society (ACS), Jan 1982.
The definitive version is available at http://dx.doi.org/10.1021/ic00134a032
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© 1982 American Chemical Society (ACS), All rights reserved.