Low-temperature Magnetic Study of Hexaaquadihydroxobis(1,1,1-trifluoro-2,4,6-heptanetrionato)trinickel(II), a Linear Trinuclear Nickel(II) Triketonate

Abstract

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.

Department(s)

Chemistry

International Standard Serial Number (ISSN)

0020-1669

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 1982 American Chemical Society (ACS), All rights reserved.

Publication Date

01 Jan 1982

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