STRAINED BONDS IN [Re<sub>4</sub>Q<sub>4</sub>X<sub>12</sub>]<sup>4-</sup> CLUSTER COMPLEXES (Q = S, Se, Te; X = F, CN<sup>-</sup>) ACCORDING TO AIM AND ELF DATA
The electron density distribution in [Re<sub>4</sub>Q<sub>4</sub>X<sub>12</sub>]<sup>4-</sup> cubane-like clusters (Q = S, Se, Te; X = F, CN) was investigated by the AIM and ELF topological quantum-chemical methods. The Re-Re, Re-Q, and Re-X interatomic interactions are characterized by <i>bcp</i> type critical binding points and are strained.