Three　new　phosphine　disubstituted　derivatives　of　[2Fe2S]　model　complexes　with　pendant　pyridine　family,　[(mu-SEt)(mu-SCH2C6H4N)Fe-2(CO)(4)(L)(2)]　(2,　L　=　PPh3;　3,　L　=　dppm;　4,　L　=　PMe3),　have　been　synthesized　and　the　molecular　structure　of　2　was　determinated　by　single　crystal　X-ray　diffraction　analysis.　They　were　all　characterized　by　MS,　FT-IR,　P-31　and　H-1　NMR　spectra　and　their　electrochemical　behaviors　were　also　conducted.　The　protonation　of　complex　4　with　HBF4　center　dot　Et2O　was　also　investigated　by　FT-IR,　P-31　and　H-1　NMR　spectroscopies　at　variable　temperature,　which　reveals　the　formations　of　both　bridging　and　terminal　hydride　intermediates.　(C)　2017　Published　by　Elsevier　B.V.