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The mixed-valence double salt K3(MnO4)(sub 2) crystallizes in space group P2(sub 1)/m with Z=2. The results of the polarized neutron diffraction study of K3 (MnO4)(sub 2) are discussed.

The dynamics of the polyaromatic cores are of vital importance as they help in examining the electrical conductivities of the columns. It is found that the dynamics of the inner core and the alkyl tails of discotics are strongly correlated.

A direct, sensitive inelastic neutron scattering spectroscopic study enables the quantitative determination of magnetic transitions in exchange-coupled oxo-centered triiron(III) complexes. The complex, (Fe3O(O2CCD3)6(C5D5N)3)NO3, has isosceles triangular cluster, while the clusters in K5(Fe3O(SO4)6(D2O)3). 6H2O and (Fe3O(O2CC(CD3)3)6(DOCD3)3)Cl are described as scalene. Magnetic Jahn-Teller effect accounts for the deviation of clusters from equilateral symmetry.

The Heisenberg-Dirac-Van Vleck (HDVV) spin-only magnetic coupling scheme was used to compare the inelastic incoherent neutron scattering (IINS) spectra of the series of trinuclear complexes (Fe(sub 2)(super III)M(II)O(OOCMe)6(py)3)(py), where (M = Mn, Ni). Major differences in the electronic interactions between the mixed-valence and mixed-metal ion clusters were revealed. If a 2-fold molecular symmetry is assumed, then the HDVV framework can be used to understand the spectrums of both complexes.

Theoretical Density Functional Theory calculations and neuron diffraction studies were used to investigate the exchange mechanisms and magnetic structure in the 2D cyano-bridged molecule based magnet [K.sub.2][[Mn[([H.sub.2]O).sub.2].sub.3][[Mo[(CN).sub.7]].sub.2].6[H.sub.2]O. Studies reveal the predominance of the spin polarization mechanism in the Mo-C-N-Mn sequence and the antiferromagnetic nature of the interaction is due to the overlap between the magnetic orbits relative to Mn and Mo in the cyano bridging region.

Research has been conducted on Fe(C (sub)3 H (sub)4 N (sub)2) (sub)6 (NO (sub)3) (sub)2. The authors describe the structural, magnetic and spectroscopic data of this compound which facilitate the molecular and electronic structure of [Fe(imidazole) (sub)6] (super)2+ cation.