W. Gao and X. Li, “Synthesis and Structural Characterization of Diiron Ethanedithiolate Complex (μ-SCH2)2Fe2(CO)5(Ph2PNHPy) Relevant to the Active Site of [Fe-Fe]-Hydrogenases”, ajc, vol. 26, no. 19, pp. 6689–6690, Sep. 2014.