Now, a team in Spain designed a type of entangled metallotweezer – molecules originally created to trap planar aromatic molecules in the cavity between their two arms. One large class are ‘wheel-and-axle’ rotaxanes, which consist of a dumbbell-shaped molecule is threaded through a large cyclic molecule. Its discoverers dubbed them clippanes since their chemical structure resembles that of two intertwined Keck clips.Īccording to the definition proposed by 2016 chemistry Nobel laureate Fraser Stoddart, mechanically interlocked molecules consist of two or more separate components that can only be untangled by breaking covalent bonds. The molecule consists of two entangled gold–carbene metallotweezers (Au = yellow, N = blue, C = grey, H omitted)Ī new member has joined the family of mechanically interlocked molecules. Source: © Royal Society of Chemistry / CCDC 2100071
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