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Abstract
Calixarene molecules are often associated with their ability to form inclusion complexes with organic or inorganic guests. These complexes are usually formed due to the guest molecule interactions with the calixarene aromatic cavity and/or substituents attached to it. The present mini-review discusses a different type of calixarene inclusion complexes, where the inclusion event occurs due to the coordination of an organic or inorganic ligand to a metal centre attached to the lower rim of calix[4]arene. Structural and chemical properties of such complexes of ‘uninvited’ guests are discussed.
