Ruth, Paul NiklasSarcevic, JulijanHerbst‐Irmer, RegineSindlinger, Christian P.Stalke, Dietmar2023-10-172023-10-1720231433-78511521-37731869737105http://nbn-resolving.de/urn:nbn:de:bsz:93-opus-ds-136466http://elib.uni-stuttgart.de/handle/11682/13646http://dx.doi.org/10.18419/opus-13627The solid-state structure of decamethylsilicocene Cp*2Si with a bent and a linear molecule in the same unit cell was so far considered an exception in relation to the structures of its all-bent heavier analogues Cp*2E with E=Ge, Sn, Pb. Here, we present the solution to this conundrum by reporting a low-temperature phase, where all three symmetrically independent molecules are present in a bent formation. This reversible enantiotropic phase transition occurs in the temperature range between 80 K and 130 K and provides a rationale for the unexpected linear molecule based in entropy beyond hand-waving explanations such as electronic reasons or packing effects.eninfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/4.0/540article2023-07-11