What question did this study set out to answer?

To synthesize molecular architectures that mimic macroscopic gyroscopes and evaluate their rotational dynamics within a solid-state crystalline framework.

February 23, 2002Journal of the American Chemical Society

Molecular “Compasses” and “Gyroscopes”. I. Expedient Synthesis and Solid State Dynamics of an Open Rotor with a Bis(triarylmethyl) Frame

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Authors

ZDZaira DomínguezUniversidad Veracruzana HDHung DangKing's College London MSM. Jane StrouseUniversity of California, Los Angeles

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Implication

Experimental study demonstrates rapid phenylene flipping within bis(triarylmethyl) crystal frames, indicating feasible nanoscale rotary motion in solids.

Key Points

To synthesize molecular architectures that mimic macroscopic gyroscopes and evaluate their rotational dynamics within a solid-state crystalline framework.
Synthesized 1,4-bis(3,3,3-triphenylpropynyl)benzene through a two-step reaction using triphenylmethyl chloride and 1,4-diiodobenzene.
Characterized crystal packing and thermal stability using single-crystal X-ray diffraction, differential scanning calorimetry (DSC), and thermogravimetric analysis (TGA).
Evaluated phenylene rotary motion via variable-temperature solid-state NMR in benzene clathrate and desolvated states.
The central phenylene unit acts as an open rotor wheel executing a two-fold flipping process within the protective tritylpropynyl axle frame.
Solid-state rotational barriers were estimated at approximately 12.8 kcal/mol for the benzene clathrate and 14.6 kcal/mol for the desolvated sample.

Cite This Study

Domínguez et al. (2002) studied this question.

synapsesocial.com/papers/6a9c99f87f3bc4118e5980b2 https://doi.org/10.1021/ja0119447

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Implication

Experimental study demonstrates rapid phenylene flipping within bis(triarylmethyl) crystal frames, indicating feasible nanoscale rotary motion in solids.

Molecular “Compasses” and “Gyroscopes”. I. Expedient Synthesis and Solid State Dynamics of an Open Rotor with a Bis(triarylmethyl) Frame

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Implication

Key Points

Cite This Study

Molecular “Compasses” and “Gyroscopes”. I. Expedient Synthesis and Solid State Dynamics of an Open Rotor with a Bis(triarylmethyl) Frame

Discussion

Member takes

Implication

Key Points

Cite This Study

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