PUB - Publikationen an der Universität Bielefeld

The compounds (H3C)(2)S, (H3Si)(2)S and (H3Ge)(2)S have been crystallised in situ on a diffractometer and their crystal structures determined by low-temperature X-ray diffraction. The molecules are present as monomers in the crystals. The aggregation of the molecules through secondary intermolecular contacts in the crystal is different: (H3C)(2)S is weakly associated into dimers by S...S contacts, whereas (H3Si)(2)S and (H3Ge)(2)S form Si...S and Ge...S contacts in an ice-analogous aggregation motif. Important geometry parameters are (H3C)(2)S: C-S 1.794(av) Angstrom, C-S-C 99.2(1)degrees; (H3Si)(2)S: Si-S 2.143(1) Angstrom, Si-S-Si 98.4degrees; (H3Ge)(2)S Ge-S 2.223(2) and 2.230(2) Angstrom, Ge-S-Ge 98.2(1)degrees.