摘要:
The ability of cymantrenecarboxylate derivatives to form supramolecular structures has been studied for ten newly prepared derivatives of cymantrenecarboxylic acid (eta(5)-C5H4COOH)Mn(CO)(3) and two new derivatives of beta-cymantrenoylpropionic acid (eta(5)-C5H4CO(CH2)(2)COOH)Mn(CO)(3) with cations of alkaline metals and protonated polytopic nitrogen bases of various geometries. It has been shown that structures of this kind (two- and three-dimensional) are formed owing to specific properties of the cymantrene moiety, i.e., its ability to coordinate metal ions via CO groups (to form isocarbonyl bridges) and to form CO center dot center dot center dot H hydrogen bonds, but in most of the cases the type of the structure is determined by the cation. In case of Li cymantrenecarboxylate complex the formation of hexameric molecules having a cavity was found. The crystal and molecular structure of cymantrenecarboxylic acid has been described for the first time. (C) 2012 Elsevier B.V. All rights reserved.