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An amide macrocycle with a highly preorganised cavity containing both polar and non-polar recognition sites forms stable complexes with cyclic dipeptides in water via amideamide hydrogen-bonds, NH-p hydrogen-bonds and hydrophobic contacts.

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New copper(I) complexes with tris(2-pyridyl)methane (TPC), tris(2-pyridyl)methoxymethane (TPM) and tris(2-pyridyl)amine (TPN) ligands have been synthesized and characterized, including structural determinations by X-ray diffraction of some examples. Their activity as catalysts in carbene and nitrene transfer reactions was studied.