Low-temperature magnetic properties of three vanadium(III) and manganese(III) β-diketonate complexes

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GREGSON, AK
DODDRELL, DM
HEALY, PC
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1978
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Abstract

The low-temperature (2-100 K) polycrystalline magnetic properties of V ( a ~ a c )M~ ,n ( a ~ a c )a~n,d Mn(trop)3 are reported [Hacac = 2,4-pentanedione and Htrop = tropolone]. For V(acac), the zero-field splitting (D) is 7.7 cm-', gI1 = 1.96 and g , = 1.78, all compatible with the reinterpreted optical spectrum. The magnetic data for Mn ( a ~ a c h) a~v e been interpreted with D = 3.1 cm-' and g = 2.00 and are also compatible with ligand field calculations based on the reinterpreted optical spectrum. In Mn(trop), there appears to be a very weak intermolecular coupling through the tropolonate ligands, the magnetic parameters being D = -2.6 cm-], g = 2.00, and J = -0.18 cm-l.

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Inorganic Chemistry
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© 1978 American Chemical Society. Self-archiving of the author-manuscript version is not yet supported by this publisher. The contents of this journal can be freely accessed online via the ACS web page 12 months after publication. Use hypertext link above to access the ACS website.
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Inorganic chemistry
Physical chemistry
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