imino radical | 13774-92-0

• 分子结构分类: 无机化合物 - 均质非金属化合物 - 其他非金属有机物
• 英文名称: imino radical
• 英文别名: imidogen radical；imine radical；imidogen；iminogene；nitrene；λ1-azane
• CAS: 13774-92-0
• 化学式: HN
• 分子量: 15.0146
• InChiKey: PDCKRJPYJMCOFO-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -0.7
• 重原子数：
  1
• 可旋转键数：
  0
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.0
• 拓扑面积：
  1
• 氢给体数：
  1
• 氢受体数：
  1

反应信息

• 作为反应物：
  描述：

  imino radical 在 甲醇 作用下， 生成 NH2 radical
  参考文献：
  名称：

  Bond selectivity in the reaction of NH(a ¹Δ) with methanol

  摘要：

  Reaction of NH(a 1Δ) with methanol has been studied by a flash photolysis of HNCO at 193 nm at room temperature (298±2 K). Time dependence and relative concentrations for NH, NH2, NHD, CH3O, H, and D are monitored by a laser induced fluorescence (LIF) technique. From the pseudo-first-order analysis of NH(a 1Δ) decay rate, the rate constants for the reactions NH(a 1Δ)+CH3OH→ products (1), and NH(a 1Δ)+CH3OD→products (2) have been determined to be k1=(1.37±0.10)×10−10 cm3 molecule−1 s−1 in the pressure range of 3–20 Torr Ar or 5 Torr He, and k2=(1.33±0.05)×10−10 cm3 molecule−1 s−1 at the pressure of 5 Torr He, respectively. By comparing the LIF intensity of NH(X 3Σ−) in reaction (1) with that in NH(a 1Δ)+Xe reaction system, the contribution of physical quenching in reaction (1) has been evaluated to be less than 2.4%. Also by comparing the LIF intensities of NHD and NH2 in reaction (2) with those in NH(a 1Δ)+D2/H2 reaction systems, the branching ratio between the pathways producing NHD (2b) and NH2 (2c) has been determined to be k(2b)/k(2c)=23±9. It is elucidated that the insertion of NH(a 1Δ) into O–D bond of CH3OD is completely predominant over C–H bond; i.e., the O–D bond is about 69 times more reactive toward insertion of NH(a 1Δ) than a single C–H bond.

  DOI：

  10.1063/1.465086
• 作为产物：
  描述：

  NH2 radical 以 gaseous matrix 为溶剂， 生成 imino radical
  参考文献：
  名称：

  NH （A）片段荧光检测NH 2自由基

  摘要：

  最初在NH 3的ArF激光光解中产生的热NH 2自由基在与Ar碰撞时迅速松弛到环境温度。他们随后通过电子激发（NH（A的荧光来检测3 Π）photofragments发射在336纳米。对于自由基的光解光源是在147nm的连续波Xe灯，该方法使得能够监测NH 2基团超过0.2秒，因为它们慢慢地相互反应并扩散的观察体积的进行。检测到的NH 2个浓度范围from≈10 13 to≈10 15厘米-3。

  DOI：

  10.1016/0009-2614(95)00529-d
• 作为试剂：
  描述：

  丙烷 在 imino radical 作用下， 生成 异丙基自由基 、 1-Propylradikal 、 alkaline earth salt of/the/ methylsulfuric acid
  参考文献：
  名称：

  Roehrig, Michael; Wagner, Heinz Georg, Berichte der Bunsen-Gesellschaft, 1994, vol. 98, # 6, p. 858 - 863

  摘要：

  DOI：

文献信息

• Amino acid derivatives having renin inhibiting activity
  申请人：Hoffmann La Roche Inc.

  公开号：US05688946A1

  公开（公告）日：1997-11-18

  The compounds of the formula ##STR1## in the form of optically pure diastereomers, mixtures of diastereomers, diastereomeric racemates or mixtures of diastereomeric racemates as well as pharmaceutically usable salts thereof inhibit the activity of the natural enzyme renin and can accordingly be used in the form of pharmaceutical preparations in the control or prevention of high blood pressure and cardiac insufficiency.

  上述化学公式##STR1##的化合物，以光学纯的立体异构体、立体异构体混合物、立体异构体对映体混合物或立体异构体对映体混合物的形式，以及它们的药用盐，都能抑制天然酶肾素的活动，因此可以以药物制剂的形式用于控制或预防高血压和心功能不全。
• Gas-phase chemistry of transition metal-imido and -nitrene ion complexes. Oxidative addition of nitrogen-hydrogen bonds in ammonia and transfer of NH from a metal center to an alkene
  作者：Steven W. Buckner、James R. Gord、Ben S. Freiser

  DOI：10.1021/ja00228a002

  日期：1988.9

  CrNH/sub 3//sup +/, as do all group 6-11 atomic metal ions investigated. However, excited-state Cr/sup +/ reacts with NH/sub 3/ via bond-insertion reactions to form CrNH/sub 2//sup +/ and CrNH/sup +/. An unidentified metastable electronic state of Cr/sup +/, produced by direct laser desorption of chromium foil, reacts with much higher efficiency than does kinetically excited Cr/sup +/. FeO/sup +/ reacts

  本文报道了许多裸过渡金属-氮烯和-亚胺离子配合物MNH/sup +/ 的气相化学。第 3、4 和 5 族原子金属离子在热能下与 NH/sub 3/ 反应，通过脱氢生成 MNH/sup +/。提出了一种反应机制，包括对 NH 键的初始氧化加成，类似于为气态原子金属离子与碳氢化合物的反应提出的机制。Cr/sup +/ 通过缓慢缩合与 NH/sub 3/ 反应形成 CrNH/sub 3//sup +/，所有 6-11 族原子金属离子也是如此。然而，激发态 Cr/sup +/ 通过键插入反应与 NH/sub 3/ 反应形成 CrNH/sub 2//sup +/ 和 CrNH/sup +/。Cr/sup +/ 的一种未知亚稳态电子状态，由铬箔的直接激光解吸产生，反应的效率比动力学激发的 Cr/sup +/ 高得多。FeO/sup +/ 与NH/sub 3/ 反应生成FeNH/sup +/，同时失去H/sub
• Kinetics of the self-reaction and the reaction with OH of the amidogen radical
  作者：Kjell Fagerström、Jerzy T. Jodkowski、Anders Lund、Emil Ratajczak

  DOI：10.1016/0009-2614(95)00154-v

  日期：1995.4

  The kinetics of the self-reaction and the reaction with OH of the amidogen radical were studied at 298 K by pulse radiolysis combined with UV detection of NH2 and OH radicals at 597.7 and 309.0 nm. The rate constant for the association reaction of NH2 radicals was found to be pressure dependent in the range 200–1000 mbar of SF6, and by Troe's analysis the following high- and low-pressure limiting rate

  通过脉冲辐射分解结合紫外检测597.7和309.0 nm处的NH 2和OH自由基，研究了酰胺基自由基在298 K时的自反应动力学和与OH的反应。为NH的缔合反应的速度常数2基团被认为是压力依赖于SF的范围200-1000毫巴6，并且通过Troe的分析获得以下高和低限压速率常数：κ REC，∞（7.1±0.8）×10 10（Ť / 300）0.27中号-1小号-1和κ REC，0 / [SF 6 ] =（7.1±1.5）×10 12（T / 300）-3.9 M -2 s -1在200–400 K的温度范围内。对于NH 2和OH自由基之间的反应，在500–1000 mbar SF 6范围内未观察到压力依赖性，并且随后出现了高压力。推导得出限压速率常数：（5.6±1.0）×10 10（T / 300）在200–400 K的温度范围内为0.20 M -1 s -1。
• The multichannel reaction NH2 + NH2 at ambient temperature and low pressures
  作者：Nigel Stothard、Robert Humpfer、Horst-Henning Grotheer

  DOI：10.1016/0009-2614(95)00563-j

  日期：1995.7

  at ambient temperature by monitoring reactants and products with an electron impact mass spectrometer. At the low pressures used (0.7 and 1.0 mbar) the gas-phase self-reaction is dominated by a ‘bimolecular’ H2-eliminating exit channel with a rate coefficient of k3b(300 K) = (1.3 ± 0.5) × 10−12 cm3 molecule−1 s−1 and leading to N2H2 + H2 or NNH2 + H2. Although the wall loss for NH2 radicals is relatively

  NH 2分布图是在排气流反应器中于环境温度下通过用电子冲击质谱仪监测反应物和产物来测量的。在所用的低压（0.7和1.0 mbar）下，气相自反应主要由消除“双分子” H 2的出口通道控制，速率系数为k 3b（300 K）=（1.3±0.5）×10 -12 cm 3分子-1 s -1并产生N 2 H 2 + H 2或NNH 2 + H 2。尽管NH 2自由基的壁损耗相对较小（k瓦特≈6-14小号-1），对整体NH贡献2衰变是相对缓慢的气相反应，由于重要。异质反应产生N 2 H 4分子。
• The Four Isotopomer Reactions of NH(<i>a</i>) and ND(<i>a</i>) with NH₃(<i>X̃</i>) and ND₃(<i>X̃</i>)
  作者：L. Adam、W. Hack、Matthias Olzmann

  DOI：10.1524/zpch.218.4.439.29201

  日期：2004.4.1

  The reactions

  NH(a) + NH₃(X̃) → products (1)

  ND(a) + NH₃(X̃) → products (2)

  NH(a) + ND₃(X̃) → products (3)

  ND(a) + ND₃(X̃) → products (4)

  were studied in a quasi-static reaction cell at room temperature and pressures of 10 and 20mbar with He as the main carrier gas. The electronically excited reactants NH(a) and ND(a) were generated by laser-flash photolysis of HN₃ and DN₃, respectively, at λ = 308nm and detected by laser-induced fluorescence (LIF). Also the ground state species NH(X) and ND(X) as products were detected by LIF.

  From the measured concentration-time profiles of NH(a) and ND(a) under pseudo-first order conditions, the following rate constants were obtained:

  NH(a) + NH₃(X̃) → products (1)

  ND(a) + NH₃(X̃) → products (2)

  NH(a) + ND₃(X̃) → products (3)

  ND(a) + ND₃(X̃) → products (4)

  k ₁ = (9.1 ± 0.9) × 10¹³ cm³mol⁻¹s⁻¹

  k ₂ = (9.6 ± 1.0) × 10¹³ cm³mol⁻¹s⁻¹

  k ₃ = (8.0 ± 1.0) × 10¹³ cm³mol⁻¹s⁻¹

  k ₄ = (7.2 ± 0.8) × 10¹³ cm³mol⁻¹s⁻¹.

  The major products are the corresponding NH _i D_{2 − i} (X̃) radicals (i = 0, 1, 2), whereas quenching processes such as NH(a) + ND₃ → NH(X) + ND₃ are of minor importance (1%). The isotope exchange NH(a) + ND₃ → ND(X) + NHD₂ is negligible, and the corresponding channel on the singlet surface NH(a) + ND₃(X ^~) → ND(a) + NHD₂(X̃) contributes with 1% to the overall NH(a) depletion in that reaction. The experimental findings are discussed in terms of a chemical activation mechanism by means of statistical rate theory.

  摘要：在室温和10到20mbar的压力下，在He作为主要载气体的条件下，通过激光闪光光解HN3和DN3生成电子激发态反应物NH(a)和ND(a)，并通过激光诱导荧光(LIF)进行检测。同时，通过LIF检测到了NH(X)和ND(X)作为产物的基态物种。 通过伪一级条件下测量的NH(a)和ND(a)浓度-时间曲线，得到了以下速率常数： k1 = (9.1 ± 0.9) × 10^13 cm^3mol^-1s^-1 k2 = (9.6 ± 1.0) × 10^13 cm^3mol^-1s^-1 k3 = (8.0 ± 1.0) × 10^13 cm^3mol^-1s^-1 k4 = (7.2 ± 0.8) × 10^13 cm^3mol^-1s^-1. 主要产物是相应的NH_iD_2−_i(X̃)自由基(i = 0, 1, 2)，而NH(a) + ND3 → NH(X) + ND3等猝灭过程的重要性较小(1%)。同位素交换NH(a) + ND3 → ND(X) + NHD2可以忽略不计，而在单线态表面NH(a) + ND3(X̃) → ND(a) + NHD2(X̃)通道对整体NH(a)耗尽的贡献为1%。实验结果通过统计速率理论讨论了化学活化机制。