Tetrahedral Tetraphosphonic Acids. New Building Blocks in Supramolecular Chemistry
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- 作者：Alexandra Sch眉trumpf ; Erdo臒an Kirpi ; Aysun Bulut ; Flavien L. Morel ; Marco Ranocchiari ; Enno Lork ; Yunus Zorlu ; Simon Grabowsky ; G眉ndo臒 Y眉cesan ; Jens Beckmann
- 刊名：Crystal Growth & Design
- 出版年：2015
- 出版时间：October 7, 2015
- 年：2015
- 卷：15
- 期：10
- 页码：4925-4931
- 全文大小：523K
- ISSN：1528-7505
文摘
The structural characterization of tetraphenylmethane tetrakis-4-phosphonic acid (4a) and its closely related Si-analogue tetraphenylsilane tetrakis-4-phosphonic acid (4b) is reported. Crystals of 4a, obtained by crystallization at 165 掳C from water under hydrothermal conditions, comprise a dense threefold interpenetrated hydrogen-bonded network. Lower calculated density cocrystals 4b路4 EtOH, attained by recrystallization from ethanol, give rise to a porous honeycomb network that shows no interpenetration. Isolated from the mother liquor, the encapsulated ethanol is rapidly lost under ambient conditions leaving amorphous 4b. While the amorphous 4b is reasonably soluble in methanol, crystalline 4a is virtually insoluble in common organic solvents.