英文别名bis-ethylcyclopentadienyl hafnium dichloride; Hafnium,dichlorobis[(1,2,3,4,5-h)-1-ethyl-2,4-cyclopentadien-1-yl]; 2-ethylcyclopenta-1,3-diene,hafnium(4+),dichloride; bis(ethylcyclopentadienyl)hafnium(iv) dichloride; Dichlorobis[(1,2,3,4,5-η)-1-ethyl-2,4-cyclopentadien-1-yl]hafnium 
