Re2(CO)7(PMe3)3(μ-SC6H4CHCH) | 268217-85-2

• 英文名称: Re2(CO)7(PMe3)3(μ-SC6H4CHCH)
• CAS: 268217-85-2
• 化学式: C₂₄H₃₃O₇P₃Re₂S
• 分子量: 930.923
• InChiKey: TYGBOKLNLQWDPU-UHFFFAOYSA-M

反应信息

• 作为产物：
  描述：

  Re2(CO)7(μ-SC6H4CHCH) 、 三甲基膦 以 甲苯 为溶剂， 生成 Re2(CO)7(PMe3)2(μ-SC6H4CHCH) 、 Re2(CO)7(PMe3)3(μ-SC6H4CHCH)
  参考文献：
  名称：

  Organometallic models of catalytic hydrodesulfurization: Re2(CO)10-promoted cleavage of C–S bonds in benzothiophene

  摘要：

  含有 Re2(CO)10 和苯并噻吩（BT）的己烷溶液经紫外线光解后得到 CâS 裂解产物 Re2(CO)7[Î-2(C2,C3)-μ2(C 2,S)-BT] 1，该产物在室温下与 PMe3 反应生成两种膦取代产物 2 和 3，其中破碎的 BT 配体部分脱离了金属；1、2 和 3 的分子结构是催化剂表面 BT 加氢脱硫过程中可能出现的中间产物的模型。

  DOI：

  10.1039/a909161k

文献信息

• Re₂(CO)₁₀-Promoted S-Binding, C−S Bond Cleavage, and Hydrogenation of Benzothiophenes:  Organometallic Models for the Hydrodesulfurization of Thiophenes
  作者：Michael A. Reynolds、Ilia A. Guzei、Robert J. Angelici

  DOI：10.1021/ja011725l

  日期：2002.2.1

  In hydrodesulfurization model reactions of dinuclear metal complexes with thiophenes, we observe that ultraviolet photolysis of Re-2(CO)(10) and benzothiophenes (BT*) in hexanes solution produces the ring-opened BT* complexes Re-2(CO)(7) (mu-BT*) (1a-d) (BT* = benzothiophene (BT) 1a, 2-methylbenzothiophene (2-MeBT) 1b, 3-methylbenzothiophene (3-MeBT) 1c, and 3,5-dimethylbenzothiophene (3,5-Me2BT) 1d). The eta(1)(S)-bound BT* complexes Re-2(CO)(9)(eta(1)(S)-BT*) (2a-d), prepared from Re-2(CO)(9)(THF) and BT*, are readily converted into 1a-d in good yields (40-60%) during UV photolysis in hexanes solution, which suggests that the eta(1)(S)-bound complexes 2a-d are precursors to 1a-d in the reactions of Re-2(CO)(10) with BT*. Irradiation of Re-2(CO)(10) and 3,5-Me2BT with UV light in decane solution under an atmosphere of H-2 produces complex 1d and the partially hydrogenated BT* complex Re-2(CO())7(mu-3,5-Me2BT-H)(mu-H) (3d). Reactions of 1a with phosphines yield further ring-opened BT-Re complexes of the types Re-2(CO)(7)(PMe3)(3)-(mu-BT) (4) and Re-2(CO)(7)(PR3)(2) (mu-BT) (R = Me (5), Pr-i (6), Cy (7), and bis(diethylphosphino)ethane (8)). Structures of 1d, 2c, 3d, and 6, which demonstrate various bonding modes of benzothiophene and its C-S cleaved derivatives to two metal centers, were determined by X-ray crystallographic studies.