Synthesis of a New Tetrakis(hydrosulfido) Diiridium Complex and Its Conversion into Homo- and Heterometallic Sulfido−Hydrosulfido Clusters

Synthesis of a New Tetrakis(hydrosulfido) Diiridium Complex and Its Conversion into Homo- and Heterometallic Sulfido−Hydrosulfido Clusters
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新型四(氢硫基)二铱配合物的合成及其同质和异金属硫基-氢硫基团簇的转化

DOI:
10.1021/om0108550
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发表时间:
2002
期刊:
影响因子:
2.8
通讯作者:
M. Hidai
M. Hidai
中科院分区:
化学2区
文献类型:
--
作者:
Fusao Takagi;H. Seino;Y. Mizobe;M. Hidai

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二铱三硫氢化物配合物[Cp*Ir(μ2-SH)3 IrCp *]Cl(2; Cp* = η5-C5 Me 5)与[NEt 4][SH]在室温下反应3 h得到四硫氢化物配合物[Cp*Ir(SH)(μ2-SH)2 IrCp *(SH)](3)。溶于苯中的配合物3是热不稳定的,在50 °C时转化为硫代氢硫代三铱簇[(Cp*Ir)3(μ3-S)(μ2-S)(μ2-SH)2](4)。相关的三铱簇合物[(Cp*Ir)3(μ3-S)(μ2-SH)3]Cl(6)是通过3与0.5当量的[(Cp*IrCl)2(μ2-H)2]反应或2与等摩尔量的NEt 3处理获得的。此外,3与2当量的[Pd(PPh 3)4]或[Pd(dba)2]− PPh 3(dba =二苄叉丙酮)混合物反应,得到Ir 2 Pd 2混合金属硫基−氢硫基簇[(Cp*Ir)2(SH)(μ3-S)2{Pd(PPh 3)}2(μ2-SH)](8)。进行X射线分析以确定3、4、6和8的详细结构。
The diiridium tris(hydrosulfido) complex [Cp*Ir(μ2-SH)3IrCp*]Cl (2; Cp* = η5-C5Me5) reacted with [NEt4][SH] at room temperature for 3 h to afford the tetrakis(hydrosulfido) complex [Cp*Ir(SH)(μ2-SH)2IrCp*(SH)] (3). Complex 3 dissolved in benzene is thermally unstable and was converted into the triiridium sulfido−hydrosulfido cluster [(Cp*Ir)3(μ3-S)(μ2-S)(μ2-SH)2] (4) at 50 °C. The related triiridium cluster [(Cp*Ir)3(μ3-S)(μ2-SH)3]Cl (6) was obtained from either the reaction of 3 with 0.5 equiv of [(Cp*IrCl)2(μ2-H)2] or treatment of 2 with an equimolar amount of NEt3. Furthermore, reaction of 3 with 2 equiv of [Pd(PPh3)4] or a [Pd(dba)2]−PPh3 (dba = dibenzalacetone) mixture gave the Ir2Pd2 mixed-metal sulfido−hydrosulfido cluster [(Cp*Ir)2(SH)(μ3-S)2{Pd(PPh3)}2(μ2-SH)] (8). X-ray analyses were undertaken to determine the detailed structures of 3, 4, 6, and 8.