A thiophenophane ligand with endodentate coordination
摘要:
A new thiophenophane has been synthesized which has encapsulated a Cu(I) ion. Endodentate coordination has been possible by a -CH2CH2- spacer between the thiophene and sulfur. Geometrical and electronic characteristics are very similar to [Cu(18S6)](+). The crystal structure of [Cu(4.7,10,13,19-pentathiabicyclo[14.2.11-nonadeca-1(18),16-diene)](2)[CuCl4].H2O represents the first example of a Cu(I) complex whose charge is compensated by a Cu(II) species. Although no interaction exists between the cationic and anionic centers in the solid, as evidenced by X-ray analysis, an interaction indeed takes place in solution. It has been proven that the electrochemical properties in solution are not the sum of the individual contributions. but they are required to be the result of an interaction between the cationic and anionic complexes. most probably generating new bonds. (C) 2001 Elsevier Science Ltd. All rights reserved.