基于双层笼型倍半硅氧烷的“蝶形笼”的合成。

Synthesis of a "Butterfly Cage" Based on a Double-Decker Silsesquioxane.

机构信息

Department of Chemistry and Chemical Biology, Graduate School of Science and Technology, Gunma University, Kiryu, 376-8515, Gunma, Japan.

Inorganic Materials Chemistry Group, Sagami Chemical Research Institute, Ayase, 252-1193, Kanagawa, Japan.

出版信息

Chem Asian J. 2019 Dec 2;14(23):4179-4182. doi: 10.1002/asia.201901361. Epub 2019 Nov 28.

DOI:10.1002/asia.201901361

PMID:31691478

Abstract

Novel polyhedral structures were prepared with a butterfly-shape composed of oligosiloxane wings and a double-decker silsesquioxane (DDSQ) body. The compounds were synthesized in two steps from commercially available alkoxysilanes, and their structures were confirmed using spectroscopic methods and X-ray crystallography. Not like other phenyl-substituted cage silsesquioxanes, these butterfly cages show very good solubility in common organic solvents. The crystal structures clearly showed their unique features: a larger space with longer siloxane chains and a very flexible framework. Moreover, these compounds are thermally stable with a Td (5 % weight loss temperature) over 320 °C.

摘要

新型多面体结构由含有聚硅氧烷翅膀的蝶形结构和双层倍半硅氧烷（DDSQ）主体组成。这些化合物通过两步法从商业可得的烷氧基硅烷合成，其结构通过光谱方法和 X 射线晶体学得到证实。与其他取代苯基笼型倍半硅氧烷不同，这些蝶形笼在常见有机溶剂中有很好的溶解性。晶体结构清楚地显示了它们的独特特征：具有更大的空间和更长的硅氧烷链以及非常灵活的骨架。此外，这些化合物具有很好的热稳定性，在 320°C 以上时重量损失率（Td）超过 5%。