title: Penta-carbonyl-1κC,2κC-(μ-pyrazine-2,3-dithiol-ato-1:2κS,S':S,S')(trimethyl-phosphane-1κP)diiron(I)(Fe-Fe).
abstract: In the title compound, [Fe(2)(C(4)H(2)N(2)S(2))(C(3)H(9)P)(CO)(5)], the Fe(2)S(2) core adopts a butterfly conformation. The PMe(3) ligand is coordinated in the basal position, roughly cis to the Fe-Fe bond. The Fe-Fe distance of 2.4970 (6) Å is relatively short compared to those (ca 2.53 Å) found in another monosubstituted diiron compound. A rigid planar dithiol-ate bridge is featured, with an angle of 2.78 (1)° between the Fe-Fe bond and the normal to the pyrazine-2,3-dithiol-ate plane.
authors.affiliation: School of Materials Science and Engineering, Changchun University of Science and Technology, 7989 Weixing Road, Changchun 130022,  People's Republic of China.
authors.forename: Shang
authors.initials: S
authors.lastname: Gao
authors.forename: Chun-Ai
authors.initials: CA
authors.lastname: An
authors.forename: Qian
authors.initials: Q
authors.lastname: Duan
authors.forename: Da-Yong
authors.initials: DY
authors.lastname: Jiang