1,3-Bis[tris(trimethylsilyl)methyl]-2,4,5-triselena-1,3-digermabicyclo[1.1.1]pentane 4, obtained by photodeselenation of the corresponding 2,4,5,6-tetraselena-1,3-digermabicyclo[2.1.1]hexane, shows a short Ge ... Ge distance of 2.672 Angstrom; an Se ... Se interaction in 4 is observed by Se-77 NMR, X-ray analysis and electronic spectroscopy.