their molecules display inversion symmetry about the mid‐point of the ligand C[triple‐bond]C bond, with the (CO)3M(C5H4) (M = Mn and Re) moieties adopting a transoid conformation. The molecules in all four compounds form zigzag chains due to the formation of strong attractive I...O [in (I) and (III)] or π(CO)–π(CO) [in (I) and (IV)] interactions along the crystallographic b axis. The zigzag chains are
化合物三羰基(η 5 -1-
碘代
环戊二烯基)
锰(I)、[Mn(C 5 H 4 I)(CO) 3 ]、(I)和三羰基(η 5 -1-
碘代
环戊二烯基)
铼(I), [Re(C 5 H 4 I)(CO) 3 ] (III) 是同构的和同晶的。化合物[μ-1,2(η 5 )-
乙炔二
环戊二烯基]双[三羰基
锰(I)]或双(cymantrenyl)
乙炔、[Mn 2 (C 12 H 8 )(CO) 6 ]、(II)和[ μ-1,2(η 5 )-
乙炔双
环戊二烯基]双[三羰基
铼(I)], [Re 2 (C 12 H8 )(CO) 6 ], (IV) 是同构的和同晶的,它们的分子显示出关于
配体 C[三键]C 键的中点的反转对称性,(CO) 3 M (C 5 H 4 ) ( M = Mn 和 Re) 部分采用transoid构象。由于形成了强吸引力的 I...O [in (I) and (III)] 或 π(CO)–π(CO)