The reaction between [Pd2(dba)3] (dba=dibenzylideneacetone), tributylphosphine, and a bis(cycloalkeno)-1,4-diseleninleads to either a mononuclear [PdSeC(R1)2 C(R2)Se}(PBu3)2], or a dinuclear [Pd2SeC(R1)2 C(R2)Se}2(PBu3)2] diselenolene (R1–R2=(CH2)
   
     n
   
   ; 
   
     n
   
   =4, 5,6) depending on the stoichiometry employed; the structure of the monomeric product with 
   
     n
   
   =5 has been determined by X-ray crystallography.
                                    [Pd2(dba)3](dba=
二亚苄基丙酮)、
三丁基膦和双(环烯)-1,4-二
硒烯发生反应,生成单核[PdSeC(R1)2 C(R2)Se}(PBu3)2] 或双核[Pd2SeC(R1)2 C(R2)Se}2(PBu3)2] 二
硒烯(R1-R2=(
CH2) n ; 
   
     n =4、5、6),具体取决于所采用的
化学计量学;n =5 的单体产物的结构已通过 X 射线晶体学确定。