Abstract:

A series of 3-diferrocenyl dihydropyrazole derivatives were synthesized by using acetylferrocene. The structures of these compounds were characterized by IR, 1H NMR spectra and MS. The crystal structure of compound 2b was determined via X-ray single-crystal diffraction. Compound 2b belongs to the triclinic system with space group P1, and the unit cell parameters are a=0.9275(4) nm，b=1.1327(5) nm，c=1.1912(5) nm，α=88.67(2)°，β=79.925(18)°，γ=70.345(18)°，V=1.1595(9) nm3，Z=2，F(000)=560，Dc=1.553 g/cm3，μ=1.279 mm-1，R1=0.0351，wR2=0.0934.

Key words: ferrocene, dihydropyrazole, synthesis, crystal structure