Dicarbonylcyclopentadienyliridium, (η-C5H5)Ir(CO)2, as a ligand
Dicarbonylcyclopentadienyliridium, (η-C5H5)Ir(CO)2, as a ligand
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DOI：
10.1139/cjc-77-8-1327
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发表时间：
1999-08-01
期刊：
影响因子：
--
通讯作者：
Zaworotko, MJ
中科院分区：
文献类型：
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作者：
Jiang, FM;Biradha, K;Zaworotko, MJ
合成了以下以CpIr(CO)(2)作为2E给体配体的配合物：Cp(OC)(2)IRW(CO)(5)(1)，Cp(OC)(2)IrRu(CO)(3)(SiCl3)(2)，Cp(OC)(2)IROS(CO)(3)(GeCl3)(Cl)(2)，Cp(OC)(2)IROS(CO)(3)(X)(2)(X=Cl，Br3，I)。配合物的表征包括1、2和3的晶体结构，表明它们都含有未桥的金属-金属键。1在溶液中的羰基配体在-40℃以上的核磁共振时间尺度上进行交换，除2外，所有的络合物在室温下在溶液中解离，有些解离很快。只有在3的情况下，才能建立与解离产物的平衡。结果表明，CPlr(CO)(2)为弱配体。
The following complexes, in which CpIr(CO)(2) acts as a 2e donor ligand, have been prepared: Cp(OC)(2)IrW(CO)(5) (1), Cp(OC)(2)IrRu(CO)(3)(SiCl3)(2), Cp(OC)(2)IrOs(CO)(3)(GeCl3)(Cl) (2), Cp(OC)(2)IrOs(CO)(3)(X)(2) (X = Cl, Br (3), I). The characterization of the complexes included the crystal structures of 1, 2, and 3, which reveal that all contain an unbridged metal-metal bond. The carbonyl ligands of 1 in solution undergo exchange on the NMR time scale above -40 degrees C. With the exception of 2, all the complexes dissociate in solution at room temperature, some rapidly so. Only in the case of 3 is an equilibrium with the dissociation products established. The results indicate that Cplr(CO)(2) is a weak ligand.