Novel Organometallic Macrocycles Containing Linear Cr₂E Structural Units: Synthesis and Characterization of {[(CO)₂Cr⋮E⋮Cr(CO)₂][η⁵-C₅H₄C(O)CH₂]₂}<i>_n</i> (E = Se, S; <i>n</i> = 1, 2)

The four novel organometallic macrocyclic compounds {[(CO)2Cr⋮Se⋮Cr(CO)2][η5-C5H4C(O)CH2]2}n (1, n = 1; 2, n = 2) and {[(CO)2Cr⋮S⋮Cr(CO)2][η5-C5H4C(O)CH2]2}n (3, n = 1; 4, n = 2) were prepared via a facile “one pot” synthetic route. While a possible pathway leading to such macrocycles is suggested, products 1−4 have been characterized by elemental analysis and spectroscopy and, for 1, by X-ray crystallography.四个新型有机金属大环化合物{[(CO)₂Cr≡Se≡Cr(CO)₂][η⁵-C₅H₄C(O)CH₂]₂}ₙ（1，n=1；2，n=2）与{[(CO)₂Cr≡S≡Cr(CO)₂][η⁵-C₅H₄C(O)CH₂]₂}ₙ（3，n=1；4，n=2）通过简便的“一锅法”合成路线制备得到。尽管提出了一条可生成此类大环化合物的可能反应路径，但产物1~4已通过元素分析和光谱学手段完成表征，其中化合物1还借助X射线晶体学完成了结构解析。