四炔二醇化合物从正热膨胀到负热膨胀的转换

IF 2.6 3区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

CrystEngComm Pub Date : 2024-09-02 DOI:10.1039/D4CE00703D

Tapaswini Sethi and Dinabandhu Das

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引用次数: 0

摘要

在分子晶体中从正热膨胀（PTE）转换到负热膨胀（NTE）是一种罕见的现象。在这里，我们报告了 1,1′-(辛-1,3,5,7-四炔-1,8-二基)二环戊醇 (1) 沿晶体学 a 轴从 PTE 到 NTE 的转换。由于人字形堆积排列，在 100 K 到 200 K 之间观察到较小的 PTE，然后大的横向振动压倒了 PTE，导致在 200 K 之后出现 NTE。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Switching from positive to negative thermal expansion in a tetrayne-diol compound†

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Switching from positive to negative thermal expansion in a tetrayne-diol compound†

Switching from positive (PTE) to negative thermal expansion (NTE) in a molecular crystal is a rare phenomenon. Here we report the switching of PTE to NTE in 1,1′-(octa-1,3,5,7-tetrayne-1,8-diyl)dicyclopentanol (1) along the crystallographic a-axis. Small PTE has been observed from 100 K to 200 K due to zigzag packing arrangement and then the large transverse vibration overpowers the PTE resulting in NTE after 200 K.

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来源期刊

CrystEngComm 化学-化学综合

CiteScore

5.50

自引率

9.70%

发文量

747

审稿时长

1.7 months

期刊介绍： Design and understanding of solid-state and crystalline materials