and η2 through the remaining C═C bond of the former cyclooctadienes. The derivative with R = Me has been subjected to different substitution reactions of its labile acetonitriles, including sequential reactions against monodentate ligands such as CO and PMe3, bidentate ligands such as 2,2′-bipy, and anions such as phenylacetylide, hydride, acetylacetonate, and cyclopentadienyl. The use of these reagents
阳离子的Ir(I)配合物[Ir(1,2,5,6-η-C 8 H ^ 12)(NCMe)(
PME 3)] BF 4已观察到通过
酯取代的内炔[反应2+ 2]
氧化环化,以形成iridacyclopentene衍
生物:物[Ir(1-κ-5,6-η-C 8 H ^ 12 -2- ž - 2'-κ-C(CO 2 R)= C(CO 2 R) })(NCMe)2(
PMe 3)] BF 4(R = Me,t Bu)。这些化合物含有
FAC -tridentate
配体坐标的Ir(III)中心κ 2,通过
SP 3和
SP 2
碳,并且η2通过前
环辛二烯的其余C═C键形成。R = Me的衍
生物已对其不稳定的
乙腈进行了不同的取代反应,包括针对单齿
配体(如CO和
PMe 3),双齿
配体(如
2,2'-bipy)和阴离子(如
苯乙炔基,
氢化物)的顺序反应。
乙酰丙酮酸酯和
环戊二烯基。使用这些试剂,单独或组合的,已经导致成含有各种配