(η5-C5H5)Fe(η5-C5H4)C(Me)=NN(H)C(=S)NHR [R = H (a), Me (b)] with K2[PdCl4] gave the novel heterometallic octanuclear palladium(II) compounds [Pd(η5-C5H5)Fe(η5-C5H3)C(Me)=NN=C(S)NHR}]4 [R = H (1a), Me (1b)] as tetramers, after deprotonation of the NH group, with the ligands acting as terdentate donors through the [C,N,S] atoms. Treatment with nucleophiles cleaves the tetrameric clusters giving compounds in which splitting
用 K2[R = H (a), Me (b)] 处理 1-
二茂铁基乙酮缩
氨基
硫脲配体 (η5-
C5H5)Fe(η5-
C5H4)C(Me)=NN(H)C(=S)NHR [R = H (a), Me (b)] PdCl4]得到新的异
金属八核
钯(II)化合物[Pd(η5- )Fe(η5-
C5H3)C(Me)=NN=C(S)NHR}]4 [R = H (1a), Me (1b)] 作为四聚体,在 NH 基团去质子化后,
配体通过 [C,N,S] 原子充当三齿供体。用亲核试剂处理会裂解四聚体簇,产生仅发生 Pd-Sbridging 键裂解的化合物。Pd-螯合键的强度阻碍了它的分裂。因此,用 1:2 摩尔比的 Ph2P(
CH2)nPPh2 [n = 2 (dppe), 3 (dppp), 4 (dppb)] 处理 1a 或 1b 得到四核物质 2a-4a 和 2b-4b,分别用 PPh2R 处理得到双核化合物