Abstract
Reactions of ammonium salts of citrate and its relevant carboxylates with a molybdenum(0) carbonyl complex (C7H8)Mo(CO)3 resulted in the formation of (Et4N)3[(Hcit)Mo(CO)3] (1), (Et4N)2[(Hcmal)Mo(CO)3] (2), (Et4N)2[(Hmal)Mo(CO)3] (3), and (Me4N)2[(Meida)Mo(CO)3] (4), which are the first examples of organo-molybdenum complexes having a tri- or dicarboxylate. Complexes 1−4 were characterized by means of IR and UV−vis spectra and elemental analyses. Molecular structures of all complexes were determined by an X-ray diffraction study. The molybdenum center adopts an octahedral coordination geometry with three carbonyl ligands and a tridentate ligand which displays a unique coordination to molybdenum with its carboxylates and hydroxyl group or nitrogen atom.
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