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A supramolecular helicate with two independent Fe(ii) switchable centres and a [Fe(anilate)3]3− guest† A biphenyl-spaced bis-pyrazolylpyridine ligand interacts with ferrous ions to engender a dimetallic helical coordination cage that encapsulates an Fe3+ tris-anilate complex. The host–guest interaction breaks the symmetry of the Fe2+ centers causing a differential spin crossover behavior in them that can be followed in great detail crystallographically.
The template effect of a SiF62− guest drives the formation of a heteroleptic Fe(ii) coordination helicate† Nuria Capó,a Leoní A. Barrios, *a Joan Cardona,a Jordi Ribas-Ariño, b Simon J.
KNOXVILLE--The reaction most people have when they hear the word bacteria is rarely a good one. While it's true that food- and water-borne bacteria cause untold illnesses and even death around the world, a team of researchers from the University of Tennessee, Knoxville, and Oak Ridge National Laboratory has found a way to use bacteria to help prevent some of the very symptoms most people associate with them.
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