The prepn., crystal structure and reactivity of bis(Me acrylate)(pyridine)nickel(0) are reported. This complex reacts with E,Z-1-bromo-1-propene in the presence of water to give the conjugate addn. product. Complexes of this type seem to be involved in Ni(0) catalyzed reactions of olefins with org. halides in the presence of pyridine and water.