Inorganica Chimica Acta, volume 35, pages 285-287

On the nature of the spin ground state of iron(II) in Fe(2,9-di-CH3-phenanthroline)2(NCS)2

Publication typeJournal Article
Publication date1979-01-01
scimago Q2
wos Q2
SJR0.386
CiteScore6.0
Impact factor2.7
ISSN00201693, 18733255
Materials Chemistry
Inorganic Chemistry
Physical and Theoretical Chemistry
Abstract
The temperature dependence of the zero field Mossbauer spectrum and magnetic susceptibility of Fe(2,9-di-CH3-phenanthroline)2(NCS)2 over the range 1.8 to 300 K shows that the complex contains spin quintet iron(II) at all temperatures. The ligand is apparently to the weak field side of the ‘crossover point’ and contrary to the results of a previous study there is no evidence of a transition to a lower multiplicity (triplet or singlet) ground state. The observed decrease of the magnetic moment (4.81 μβ at 302 K to 3.48 μβ at 1.82 K) is consistent with zero field splitting (|D|≈ 5 cm−1) of the ground spin manifold.

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