Trishomobarrelenedicarboxylate dianion as a bridge between dimolybdenum units: Comparison to similar compounds

摘要

A new molecular pair composed of two quadruply bonded Mo-2(DAniF)(3)(+) units (DAniF = (p-MeOC6H4)NC(H)N-(p-MeOC6H4)) linked by a trishomobarrelene-1,5-dicarboxylate dianion has been prepared. This compound, [Mo-2-(DAniF)(3)](2)(O2CC11H12CO2) (1), has been characterized by X-ray crystallography and by H-1 NMR and UV-Vis spectroscopy. There is only weak electronic coupling between the two Mo-2 units according to electrochemical measurements. A comparison with other dicarboxylate-linked molecular pairs is presented. (c) 2005 Elsevier Ltd. All rights reserved.