Abstract
The reaction of K3Na[Mo(CN)4O2]·6H2O with 2,3-dicyanopyrazine or 2-pyridinecarbonitrile in aqueous media results in isolation of two new compounds of formulae (PPh4)2[Mo(CN)3O(pzac)]·2H2O (Hpzac=3-carbamoyl-2-pyrazinecarboxylic acid) and (PPh4)2[Mo(CN)3O(pynccn)]·3H2O·EtOH (Hpynccn=2-pyridineiminocarbonitrile) respectively. X-ray single crystal structure measurements as well as physicochemical measurements confirm transformations of 2,3-dicyanopyrazine to 3-carbamoyl-2-pyrazinecarboxylic acid and 2-pyridinecarbonitrile to 2-pyridineiminocarbonitrile. All complexes are characterized by elemental analysis, IR and UV–Vis spectroscopy. Metal-assisted ligand transformations are studied spectrophotometrically in the pH range 8.5–11.5. Two different pathways of nitrile reactivity are shown and discussed.
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