Crystal structure and chemical oxidation of the palladium(II) cyclam complex within the cavity of cucurbit[8]uril |
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| Authors: | Tatiana V Mitkina |
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| Institution: | Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences, 3 Akad. Lavrentiev Av., 630090 Novosibirsk, Russian Federation. |
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| Abstract: | Inclusion compound of a macrocyclic cavitand cucurbit8]uril (C48H48N32O16, CB8]) with a square-planar palladium(II) complex of a polyamine ligand cyclam, {Pd(cyclam)]@CB8]}Cl2·16?H2O (1), was synthesized and characterized by X-ray crystallography, elemental analysis, IR, and electrospray ionization (ESI) mass spectrometry. The complex Pd(cyclam)]2+ undergoes chemical oxidation within the CB8] cavity leading to the formation of the palladium(IV) inclusion compound {trans-Pd(cyclam)Cl2]@CB8]}Cl2·14H2O (2). The Pd(II) and Pd(IV) complexes are completely encapsulated within the CB8] cavity. The cyclam ring in 1 and 2 adopts the most stable configuration (trans-III (S,S,R,R)). |
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| Keywords: | Palladium Cyclam Cucurbit[n]urils Host-guest systems |
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