{RhAu(CO)(P(C6H5)3)2(η5-C2B9H9(CH3)2)} | 135157-53-8

• 英文名称: {RhAu(CO)(P(C6H5)3)2(η5-C2B9H9(CH3)2)}
• CAS: 135157-53-8
• 化学式: C₄₁H₄₅AuB₉OP₂Rh
• 分子量: 1012.93
• InChiKey: APGVFPOUBSGIDY-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
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• 重原子数：
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• 可旋转键数：
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• 环数：
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• sp3杂化的碳原子比例：
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• 拓扑面积：
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• 氢给体数：
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• 氢受体数：
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反应信息

• 作为产物：
  描述：

  {NEt4}{10-endo-{Au(PPh3)}-7,8-nido-C2B9H9Me2} 、 反式-双(三苯基膦)合氯化羰基铑(Ⅰ) 在 TlBF₄ 作用下， 以 四氢呋喃 为溶剂， 以85%的产率得到{RhAu(CO)(P(C6H5)3)2(η5-C2B9H9(CH3)2)}
  参考文献：
  名称：

  Reactions of [NEt4][10-endo-{Au(PPh3)}-nido-7,8-C2B9H9Me2]: carbaborane cage transfer from gold to rhodium

  摘要：

  The reagent [NEt4][10-endo-{Au(PPh3)}-nido-7,8-C2B9H9Me2] has been prepared, and used to synthesise several mixed-metal complexes in which gold atoms are bonded to rhodium. Thus treatment of the gold salt with trans-[RhCl(CO)(PPh3)2] or [Rh2(mu-Cl)2(CO)4] in thf (tetrahydrofuran), in the presence of TIBF4, affords the complexes [RhAu(CO)(PPh3)L(eta5-7,8-C2B9H9Me2)] (L = PPh3 or CO), respectively. Reaction of the gold species with [RhCl(PPh3)3] gives the complex [exo-5,10-{Rh(PPh3)2}-5,10-(mu-H)2-10-endo-{Au(PPh3)}-nido-7,8-C2B9H7Me2], the structure of which has been established by X-ray diffraction. The latter complex in solution exists in equilibrium with a minor isomer [RhAu(PPh3)3(eta5-7,8-C2B9H9Me2)] containing a closo-3,1,2-RhC2B9 cage system. With the rhodium complex [Rh(cod)(PPh3)2][PF6] (cod=cycloocta-1,5-diene), and in the presence of molecular hydrogen, the gold reagent yields a chromatographically separable mixture of [exo-5,10-{Rh(PPh3)2}-5,10-(mu-H)2-10-endo-{Au(PPh3)}-nido-7,8-C2B9H7Me2] and [RhAu2(mu-H)(PPh3)3(eta5-7,8-C2B9H9Me2)]. A single-crystal X-ray diffraction study has established the structure of the rhodium-digold compound. The NMR data (H-1, C-13-{H-1}, P-31-{H-1} and B-11-{H-1}) for the new compounds are reported and discussed in relation to their structures.

  DOI：

  10.1039/dt9930001073

文献信息

• Carbaboranerhodium complexes with Rh–Rh, Rh–Cu and Rh–Au bonds; crystal structure of [NEt₄][Rh₂(µ-σ : η⁵-C₂B₉H₈Me₂)(CO)₃(η⁵-C₂B₉H₉Me₂)]
  作者：Massimino U. Pilotti、Isil Topaloglu、F. Gordon A. Stone

  DOI：10.1039/dt9910001355

  日期：——

  The compound [NEt4][Rh(CO)(PPh3)(eta-5-C2B9H9Me2)] has been prepared and used to synthesise the dimetal complexes [RhM(CO)(PPh3)2(eta-5-C2B9H9Me2)] (M = Cu or Au) and [RhCu(CO)(PMe3)(PPh3)(eta-5-C2B9H9Me2)]. Protonation of [NEt4][Rh(CO)(PPh3)(eta-5-C2B9H9Me2)] gives an unstable hydride [RhH(CO)(PPh3)(eta-5-C2B9H9Me2)]. In contrast, treatment of [NEt4][Rh(CO)2(eta-5-C2B9H9Me2)] with HBF4.Et2O affords a dirhodium complex [Rh2(CO)3(eta-5-C2B9H9Me2)2] in which one carbaborane fragment bridges the Rh-Rh bond via an exopolyhedral B-H half-arrow-pointing-right Rh bond. This species can be deprotonated to give an anionic complex [Rh2(mu-sigma:eta-5-C2B9H8Me2)(CO)3(eta-5-C2B9H9Me2)]-, the [NEt4]+ salt of which may be obtained directly from [NEt4][Rh(CO)2(eta-5-C2B9H9Me2)] by treatment of the latter with [NHMe3]Cl. An X-ray crystallographic study established the structure of the anion. One rhodium centre is ligated by a CO molecule and by a C2B9H9Me2 cage in the normal eta-5 bonding mode, the other carries two CO groups and an eta-5-C2B9 cage. However, a boron atom beta to the carbons in the pentagonal open activated CCBBB face of this cage forms a sigma bond to the other rhodium atom [B-Rh 2.05(3) angstrom], so that this C2B9H9Me2 group bridges the Rh-Rh bond [2.876(3) angstrom]. The NMR data for the new compounds are reported and discussed.