Dihydropyrazole-bridged　ferrocene-based　derivatives　were　prepared　by　corresponding　chalcones　with　hydrazine　hydrate,　then　acylation　with　3-(ethoxycarbonyl)propionyl　chloride　directly　in　high　yields　and　purity.　All　of　these　compounds　were　characterized　by　MS,　IR,　1H　NMR,　13C　NMR　and　elemental　analysis.　The　relationship　between　the　structure　and　redox　properties　was　investigated　based　on　the　results　of　single　crystal　X-ray　structure　determinations　and　cyclic　voltammetry.　The　mechanism　of　the　electron　transfer　for　representative　compound　4b　was　verified　by　density　functional　theory　(DFT)　calculations.　©　2012　Elsevier　B.V.　All　rights　reserved.