2-Iodo-imidazolium receptor binds oxoanions via charge-assisted halogen bonding.
نویسندگان
چکیده
A detailed (1)H-NMR study of the anion binding properties of the 2-iodo-imidazolium receptor 1 in DMSO allows to fully attribute the observed affinities to strong charge-assisted C-I···X(-) halogen bonding (XB). Stronger binding was observed for oxoanions over halides. Phosphate, in particular, binds to 1 with an association constant of ca. 10(3) M(-1), which is particularly high for a single X-bond. A remarkably short C-I···O(-) contact is observed in the structure of the salt 1·H(2)PO(4)(-).
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ورودعنوان ژورنال:
- Organic & biomolecular chemistry
دوره 10 7 شماره
صفحات -
تاریخ انتشار 2012