Cation and anion recognition have both played central roles in the development of
supramolecular chemistry. Much of the associated research has focused on the …

Squaramides are remarkable four-membered ring systems derived from squaric acid that
are able to form up to four hydrogen bonds. A high affinity for hydrogen bonding is driven …

Organic chemists tend to consider the conformation of compounds as a consequence of
repulsive steric interactions. In other words,“the steric effect” means “repulsive” in many …

Compared with simple ion receptors, which are able to bind either a cation or an anion, ion
pair receptors bearing both a cation and an anion recognition site offer the promise of …

This treatise is an update to a preceding highlight (CH/π hydrogen bonds in crystals)
published in this journal 5 years ago (M. Nishio, CrystEngComm, 2004, 6, 130–156). After …

The use of a squaramide-based ion pair receptor offers a solution to the very challenging
problem of extraction and transport of extremely hydrated sulfate salt. Herein we …

The synthesis and in vitro evaluation of a squarate hydroxamate− coumarin conjugate, 12,
as a chemodosimeter for Fe (III) and other oxidants, such as Cr (VI) and Ce (IV), is …

We synthesized ion pair receptors 1 and 2 consisting of a benzocrown ether cation binding
site and a ferrocene-supported squaramide anion binding domain and compared their …

Through the high dilution technique, we obtained macrocyclic ion pair receptors R1 and R2,
an anion receptor R3, and a fluorescent sensor R4 using a combination of particular …

We synthesized an ion pair receptor 1 consisting of a crown ether cation binding site and a
squaramide anion binding domain and compared its binding properties to those of its …