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C H T U N G T R E N N U N G amidines and -formamidinates can be readily prepared by reaction of N-arylformimidates with lithium phosphanides. These compounds were previously inaccessible by methods for the preparation of phosphaamidines and -amidinates. They have the potential to be precursors of P,N-heterocyclic carbenes, which are as yet unknown.
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Holey phosphines! The end capping of triethynylphosphine with bulky groups results in the creation of ligands with a large cavity in which the phosphorus lone-pair electrons are located. The novel coordination properties of these ligands lead to a rate-accelerating effect in the rhodium-catalyzed hy
Nothing in it! Composite hollow spheres of TiO 2 (shown), BaTiO 3 , and SrTiO 3 with varied crystalline phases and compositions can be synthesized under mild conditions. The sulfonated polystyrene gel templates used ensure that the crystalline hollow spheres grow without damage to their shells.