trans-ethylphosphine-borane | 79000-33-2

• 英文名称: trans-ethylphosphine-borane
• CAS: 79000-33-2
• 化学式: C₂H₁₀BP
• 分子量: 76.0752
• InChiKey: SPEYIZQOFBVPMD-DWRXQYINSA-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：

  diborane 、 乙基膦 生成 trans-ethylphosphine-borane
  参考文献：
  名称：

  Spectra and structure of phosphorus–boron compounds. XXI. Microwave spectrum of ethylphosphine–borane

  摘要：

  The microwave spectra of CH3CH2PH2 11BH3, CH3CH2PH2 10BH3, and CH3CH2PH2 11BD3 have been recorded in the region 18.0–39.0 GHz and those of CH3CH2PD2 11BH3 and CH3CH2PD2 11BD3 in the range 26.5–39.0 GHz. a-type transitions were observed and R-branch assignments have been made for all isotopes in the ground vibrational state. From the relative intensities of the microwave transitions, the Stark effect, and the experimental rotational constants, it has been determined that the assigned spectra result from the trans conformer which is believed to be more stable than the gauche form at ambient temperature. The dipole moment components for trans-ethylphosphine–borane were determined from the Stark effect to be ‖μa‖ = 4.66±0.01, ‖μb‖ = 1.34±0.03, and ‖μt‖ = 4.85±0.02 D. With reasonable assumptions for the ethyl moiety, the following structural parameters for trans-ethylphosphine–borane were calculated: r(B–P) = 1.914±0.018 Å, r(B–H) = 1.205±0.013 Å, r(P–H) = 1.408±0.016 Å, r(P–C) = 1.823±0.016 Å, ∢BPC = 115.0°±1.1°, ∢PBH = 106.1°±3.4°, ∢CPH = 103.4°±3.7°, and ∢PCC = 115.1°±2.5°. These results are compared to similar quantities in some analogous molecules.

  DOI：

  10.1063/1.442241