U@(4)-C: A Different Cage Isomer with Reactivity Controlled by U-Sumanene Interaction.

Actinide endohedral metallofullerenes (EMFs) are a fullerene family that possess unique actinide-carbon cage host-guest molecular and electronic structures. In this work, a novel actinide EMF, U@(4)-C, was successfully synthesized and characterized, and its chemical reactivity was investigated. Crystallographic analysis shows that U@(4)-C, a new isomer of U@C, has a (4)-C cage, which has never been discovered in the form of empty or endohedral fullerenes.

Hyperacute hyponatremia mimicking acute ischemic stroke.

We present a case of hyperacute hyponatremia with stroke like symptoms on presentation. Symptoms included confusion, left-sided facial droop, right-sided hemiparesis, dysarthria and aphasia, with an NIH stroke score of 5. Sodium level at the time of presentation was 119 mmol/L which dropped acutely from 138 mmol/L seven hours prior.