The determination of the electron and spin density distributions of the tetracarboxylato mixed-valent diruthenium(II,III) complex (NBu₄)Ru₂ V Br₂(O₂CC₃H₇)₄ was carried out using high-resolution X-ray diffraction and polarized neutron diffraction (PND) on single...
Grenda et al. (Thu,) studied this question.