Structural Characterization of Et 4 Sb 2 and Et 4 Bi 2

The solid-state structures of Et 4 Sb 2 ( 1 ) and Et 4 Bi 2 ( 2 ) were determined by single-crystal X-ray diffraction. Single crystals of 1 and 2 were grown in a closed quartz glass capillary under an inert argon atmosphere on the diffractometer using a specific IR-laser-assisted technique. 1 shows short intermolecular Sb···Sb interactions, whereas the closest Bi···Bi distances are longer than the sum of the van der Waals radii.