التفاصيل البيبلوغرافية
| العنوان: |
Linear and Bent Cp*2Si: Reversible Phase Transition of a Key Molecule. |
| المؤلفون: |
Ruth, Paul Niklas, Sarcevic, Julijan, Herbst‐Irmer, Regine, Sindlinger, Christian P., Stalke, Dietmar |
| المصدر: |
Angewandte Chemie International Edition; 5/15/2023, Vol. 62 Issue 21, p1-5, 5p |
| مصطلحات موضوعية: |
REVERSIBLE phase transitions, UNIT cell, TRANSITION temperature, MOLECULES, PHASE transitions |
| مستخلص: |
The 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. [ABSTRACT FROM AUTHOR] |
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