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羧基自由基 | 14485-07-5

中文名称
羧基自由基
中文别名
——
英文名称
formate radical
英文别名
carbon dioxide radical anion;carboxyl anion radical;carbon dioxide(1-);CO2 anion radical;carbon dioxide; radical anion;carboxyl radical anion;Carboxyl radical
羧基自由基化学式
CAS
14485-07-5
化学式
CO2
mdl
——
分子量
44.0098
InChiKey
ORTFAQDWJHRMNX-UHFFFAOYSA-M
BEILSTEIN
——
EINECS
——
  • 物化性质
  • 计算性质
  • ADMET
  • 安全信息
  • SDS
  • 制备方法与用途
  • 上下游信息
  • 反应信息
  • 文献信息
  • 表征谱图
  • 同类化合物
  • 相关功能分类
  • 相关结构分类

计算性质

  • 辛醇/水分配系数(LogP):
    0.5
  • 重原子数:
    3
  • 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:
    40.1
  • 氢给体数:
    0
  • 氢受体数:
    2

SDS

SDS:af4f1647c2d7c2f16e6d5ca2fd4cfb1a
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反应信息

  • 作为反应物:
    描述:
    参考文献:
    名称:
    铁(II)-聚(氨基羧酸盐)配合物与 CO2 自由基反应中铁碳 σ 键的形成和分解。脉冲辐射分解研究
    摘要:
    Etude en 解决方案将 pH 值设为中性。Des complexes a liaisons metal-C sont formes comme intermediaires instables. Constantes de stabilite des complexes。Cinetique de形成和分解
    DOI:
    10.1021/ja00220a030
  • 作为产物:
    描述:
    乙二酸锶单水合物; 草酸锶水合物 以 neat (no solvent) 为溶剂, 生成 羧基自由基
    参考文献:
    名称:
    CO的发射光谱2 -基团,在稳定的SrCO 3由src的热分解而得到的2 ö 4 ·H 2 ö
    摘要:
    CO的发射光谱2 -基团中的SrCO 3被记录之间Ť = 2 K和室温。寿命和时间分辨光谱在T = 10 K时测量,激发光谱在室温下测量。在氦的温度在完全对称的模式的前进v 1 CO的2 -观察到。通过对能带分布的分析,获得了激发态相对于基态电子态的几何形状变化。频谱被分配给至少三个CO的电子振动跃迁2 -非常相似的能量的种类,其是在所述主晶格不同位点(陷阱)。
    DOI:
    10.1016/0301-0104(90)85055-2
  • 作为试剂:
    描述:
    硒代胱胺羧基自由基 作用下, 以 为溶剂, 生成 Selenocysteamine 、 NoName_4504
    参考文献:
    名称:
    Correlating the GPx Activity of Selenocystine Derivatives with One-Electron Redox Reactions
    摘要:
    With an aim to develop water soluble, less toxic glutathione peroxidase (GPx) mimics, three selenocystine (SeCys) derivatives, viz., selenocystamine (SeA), diselenodipropionic acid (SeP), and methyl ester of diselenodipropionic acid (MeSeP) have been synthesized and examined for GPx activity along with SeCys. The GPx activity of the compounds was found to be in the order SeCys congruent to SeA > MeSeP > SeP. The relative affinity of these GPx mimics towards the substrates thiol and hydroperoxide were determined by Lineweaver-Burk (L-B) plots. Since the enzyme activity involves several steps of reduction and oxidation reactions, attempts have been made to understand the role of such processes in deciding the efficacy of diselenides as GPx mimics. For this, one-electron redox chemistry of these compounds was studied in aqueous solutions at pH 7 using nanosecond pulse radiolysis technique. From these studies, it was concluded that SeCys and SeA, which can undergo easy one-electron reduction, exhibit high GPx activity.
    DOI:
    10.1080/10426500801901046
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文献信息

  • Kinetics of Spin Trapping Superoxide, Hydroxyl, and Aliphatic Radicals by Cyclic Nitrones
    作者:Sara Goldstein、Gerald M. Rosen、Angelo Russo、Amram Samuni
    DOI:10.1021/jp048441i
    日期:2004.8.1
    Spin trapping coupled with electron paramagnetic resonance (EPR) spectroscopy has surfaced as one of the most specific and reliable methods for identifying free radicals in biological systems. Despite extensive studies focused on the kinetics of radical trapping by cyclic nitrones, the mechanism has not been fully elucidated. Moreover, major controversies still persist even regarding the efficiency
    自旋捕获与电子顺磁共振 (EPR) 光谱相结合已成为识别生物系统中自由基的最具体和最可靠的方法之一。尽管广泛的研究集中在环状硝酮的自由基捕获动力学,但其机制尚未完全阐明。此外,即使关于捕获反应的效率和速率常数,主要争议仍然存在。本研究使用脉冲辐解来研究 5,5-dimethyl-1-pyrroline N-oxide 1 (DMPO) 和含酯衍生物 5-tert-butoxycarbonyl-5-methyl-1-pyrroline N- 的反应。氧化物 4,与 •OH、O2•-、CO2•-、•C(OH)(CH3)2、•CH2OH 和• 。结果表明,激进的诱捕比以前意识到的要复杂得多。与 EPR 相结合的辐射化学实验表明,大约 30% 的 •OH 在 2 位添加到硝酮 1 和 4,产生相应的持久性氧基。剩余的 •OH 自由基形成瞬态中间体...
  • Spin trapping with 5,5-dimethylpyrroline-N-oxide in aqueous solution.
    作者:YUTAKA KIRINO、TAKAAKI OHKUMA、TAKAO KWAN
    DOI:10.1248/cpb.29.29
    日期:——
    Spin trapping with 5, 5-dimethylpyrroline-N-oxide (DMPO) of various radicals was carried out in aqueous solutions and the ESR parameters for the spin adduct radicals were determined. Comparison of hyperfine coupling constants obtained in aqueous solutions and in benzene revealed that considerable solvent effect exists. For the radical obtained by the addition of a hydroxyl radical to DMPO, the hyperfine coupling constant was found to depend on the basicity of the solution. This phenomenon was analyzed in terms of the acid dissociation equilibrium of the hydroxyl proton of the adduct radical, and the pK value was determined to be 12.96.
    采用5,5-二甲基-1-吡咯啉氮氧化物(DMPO)进行自旋捕获,在中制备了多种自由基,并测定了自旋加合物自由基的电子自旋共振(ESR)参数。比较在中和苯中获得的超精细耦合常数,揭示了显著的溶剂效应。对于通过羟基自由基加合到DMPO上得到的自由基,其超精细耦合常数被发现依赖于溶液的碱度。这一现象基于加合物自由基中羟基质子的酸解离平衡进行了分析,并确定其pK值为12.96。
  • Singlet molecular oxygen: not a major product of the reaction between tris(2,2'-bipyridine)ruthenium(3+) and superoxide radical anions
    作者:Q. G. Mulazzani、M. Ciano、M. D'Angelantonio、M. Venturi、M. A. J. Rodgers
    DOI:10.1021/ja00216a018
    日期:1988.4
    O/sub 2/ is that generated by energy transfer between *Ru(bpy)/sub 3//sup 2 +/ and ground-state oxygen. Radiolytic and electrochemical measurements have established that the bleaching of the singlet oxygen trap ADPA/sup 2 -/, which occurs with a quantum yield of 0.12 +- 0.01 when H/sub 2/O or D/sub 2/O solutions containing Ru(bpy)/sub 3//sup 2 +/, MV/sup 2 +/, O/sub 2/, and ADPA/sup 2 -/ are photolyzed
    时间分辨红外发光和计算机辅助动力学模型已被用于证明单线态分子氧 O/sub 2/ (/sup 1/..delta../sub g/) 在电子转移过程中没有形成Ru(bpy)/sub 3//sup 3 +/ 和 O/sub 2//sup .-/ 离子在性介质中的反应。这与之前声称的内容形成鲜明对比。就他们能够确定的而言,在含有 Ru(bpy)/sub 3//sup 2 +/、MV/sup 2 +/ 和 O/sub 2/ 的反应混合物中光解形成的唯一单线态氧是产生的通过*Ru(bpy)/sub 3//sup 2 +/ 和基态氧之间的能量转移。辐射分解和电化学测量已经确定单线态氧的漂白会捕获 ADPA/sup 2 -/,其发生的量子产率为 0.12 ± 0。01 当 H/sub 2/O 或 D/sub 2/O 溶液含有 Ru(bpy)/sub 3//sup 2 +/、MV/sup 2 +/、O/sub
  • High-Pressure Pulse-Radiolysis Study of the Formation and Decomposition of Complexes with Iron−Carbon σ Bonds:  Mechanistic Comparison for Different Metal Centers
    作者:Sara Goldstein、Gidon Czapski、Rudi van Eldik、Nurit Shaham、Haim Cohen、Dan Meyerstein
    DOI:10.1021/ic010091g
    日期:2001.9.1
    points out that (i) the reaction of M(n)L(m) with aliphatic radicals (R(*)) proceeds via an interchange ligand substitution mechanism, i.e. M(n)L(m) + R(*) --> L(m-1)M(n+1)-R + L, (ii) the homolysis of the metal-carbon bonds naturally follows the same mechanism, and (iii) the volume of activation for the homolysis reaction depends strongly on the nature of the central cation, i.e. larger for M(n+1) = Cr(III)
    形成和均化瞬态配合物(hedta)Fe(III)-CO(2)(2-)和(hedta)Fe(III)-CH(3)(-)(HOCH(2)CH (2)N(CH(2)CO(2-))CH(2)CH(2)N(CH(2)CO(2-))(2)= hedta)使用高压脉冲辐射分解法测定技术。将结果与与其他中央过渡属阳离子(M(n +))和配体(L)的类似配合物的结果进行比较,结果表明:(i)M(n)L(m)与脂肪族自由基的反应(R (*))通过交换配体取代机制进行,即M(n)L(m)+ R(*)-> L(m-1)M(n + 1)-R + L,(ii)属-碳键的均质分解自然遵循相同的机理,并且(iii)均质化反应的激活量在很大程度上取决于中心阳离子的性质,即M(n + 1)= Cr(III)较大, Co(III),Ni(III)和较小的Fe(III)。
  • Temperature-dependent rate constants for hydroxyl radical reactions with organic compounds in aqueous solutions
    作者:B. Ervens、S. Gligorovski、H. Herrmann
    DOI:10.1039/b300072a
    日期:2003.4.16
    The OH radical is the most important oxidant in both the tropospheric gas and aqueous phase. Its main sink processes in clouds appear to be reactions with organics but due to the lack of appropriate kinetic data current cloud chemistry models consider only reactions with C1 and C2 compounds. Therefore, in this study temperature dependent rate constants for the reactions of the OH radical with organic
    OH 自由基是对流层气相和相中最重要的氧化剂。它在云中的主要汇过程似乎是与有机物的反应,但由于缺乏适当的动力学数据,当前的云化学模型仅考虑与 C1 和 C2 化合物的反应。因此,在本研究中,确定了 OH 自由基与有机化合物 (≥C2) 反应的温度相关速率常数。这些研究是通过竞争动力学(参考物质:SCN-)进行的。最初,检查实验系统,重新研究可从文献中获得的与甲酸盐 (R-1) 和叔丁醇 (R-2) 反应的 OH 反应动力学数据。对于反应(R-1)和(R-2),得到以下结果:k1(298 K)=(2.4±0.4)×109 M-1 s-1;A1=(7.9±0.7)×1010 M-1 s-1;EA,1=(9±5) kJ mol-1 和 k2(298 K)=(5.0±0)。6)×108 M-1 s-1;A2=(3.3±0.1)×1010 M-1 s-1;EA,2=(10±3) kJ mol-1 分别用于甲酸盐和叔丁醇。OH
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