carbon monoxide,cobalt,cyclopenta-1,3-diene 、
(R*,S*)-bis(phenylethoxyphosphoryl)acetylene 以
xylene 为溶剂,
生成 (R*,S*,R*,S*)-[η4-tetrakis(phenylethoxyphosphoryl)cyclobutadiene](η5-cyclopentadienyl)cobalt(I) 、 (R*,R*,S*,S*)-[η4-tetrakis(phenylethoxyphosphoryl)cyclobutadiene](η5-cyclopentadienyl)cobalt(I)