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disilver(1+) | 12187-07-4

中文名称
——
中文别名
——
英文名称
disilver(1+)
英文别名
Silver;silver;silver;silver
disilver(1+)化学式
CAS
12187-07-4
化学式
Ag2
mdl
——
分子量
215.736
InChiKey
ONVGIJBNBDUBCM-UHFFFAOYSA-N
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):
    -0.01
  • 重原子数:
    2
  • 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:
    0
  • 氢给体数:
    0
  • 氢受体数:
    0

反应信息

  • 作为产物:
    描述:
    silver(I) chloride 以 neat (no solvent) 为溶剂, 生成 disilver(1+)
    参考文献:
    名称:
    Gusarov, A. V.; Gorokhov, L. N., Vestnik Moskovskogo Universiteta Seriya 2 Khimiya, 1962, vol. 17, # 5, p. 14 - 15
    摘要:
    DOI:
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文献信息

  • Reactions of AgI ions in alcohols after radiolysis at 77 K
    作者:Robert Janes、Andrew D. Stevens、Martyn C. R. Symons
    DOI:10.1039/f19898503973
    日期:——
    Solutions of silver perchlorate in methanol, ethanol, ethane-1,2-diol, isopropyl alcohol, allyl and propargyl alcohols have been exposed to 60Co γ-rays at 77 K and the resulting radicals studied using ESR spectroscopy. In addition to ĊH2OH solvent radicals, methanolic solutions gave AgII centres and a number of discrete Ag° species. The latter exhibited a range of hyperfine couplings, reflecting various degrees of solvation. Their relative yields were shown to vary according to initial AgI concentration and with added sodium perchlorate. After annealing to ca. 120 K, Ag° gave way to the molecular cluster cations Ag+2, Ag2+3, Ag3+4 and Ag4+5, previously identified by ESR and optical spectroscopy in a range of systems and shown to be formed by the sequential addition of AgI ions. Ag4+5 formation was favoured either by high initial AgI or high counterion (nitrate or perchlorate) concentration. During the silver aggregation process the solvent radicals (CH2OH) decayed and the adduct [Ag . CH2OH]+ was formed [Aiso(Ag)= 128 G]. On annealing to the softening point of the matrix these species were lost. No higher-nuclearity molecular centres were detected. However, a weak singlet in the free-spin region grew in. This is tentatively assigned to conduction electron spin resonance (CESR) in pseudo-metallic, Ag0n particles. On further melting the Ag0n signal disappeared and the sample became black, indicating the eventual formation of colloidal silver. Similar reactions were observed in ethanol, ethane-1,2-diol and isopropyl alcohol.The allyl alcohol system did not give any clearly defined Ag° centres, only solvent radicals being observed at 77K. Two possible silver–solvent adducts were detected after annealing, one with a larger Aiso(Ag) value than expected (ca. 360 G). Results for propargyl alcohol were similar, except that only one silver–solvent species was formed. Possible structures for these centres are discussed. When both systems were annealed to the matrix softening point, the adduct signals decayed and an isotropic singlet in the free-spin region was revealed. This signal was particularly strong in the propargyl system. The g value and linewidth are similar to values recently reported for CESR signals from Ag0n latent-image particles formed in silver halide matrices by photolysis.
    高氯酸银在甲醇、乙醇、乙二醇、异丙醇、烯丙醇和炔丙醇中的溶液在77 K下暴露于60Co γ射线,并使用ESR光谱研究了产生的自由基。除了CH2OH溶剂自由基外,甲醇溶液还产生了AgII中心和一系列离散的Ag°物种。后者显示出不同范围的超精细耦合,反映了各种程度的溶剂化。它们的相对产率根据初始AgI浓度和添加的氯酸钠而变化。在退火至约120 K后,Ag°转变为分子簇阳离子Ag+2、Ag2+3、Ag3+4和Ag4+5,这些先前已在多种系统中通过ESR和光谱学鉴定,并显示是由AgI离子的连续加成形成的。Ag4+5的形成在高初始AgI或高配体(硝酸盐或高氯酸盐)浓度下更有利。在银聚合过程中,溶剂自由基(CH2OH)衰减,形成了加合物[AgCH2OH]+ [Aiso(Ag)= 128 G]。在退火至基质软化点时,这些物种消失。未检测到更高核的分子中心。然而,自由自旋区域中出现了一个弱单重态。这被暂时归因于伪金属Ag0n粒子中的导电电子自旋共振(CESR)。在进一步熔化后,Ag0n信号消失,样品变黑,表明最终形成了银胶体。乙醇、乙二醇和异丙醇中也观察到了类似反应。烯丙醇系统未产生任何明确的Ag°中心,仅在77K下观察到溶剂自由基。退火后检测到两种可能的银-溶剂加合物,其中一种的Aiso(Ag)值比预期的大(约360 G)。炔丙醇的结果类似,只是仅形成了一种银-溶剂物种。讨论了这些中心的可能结构。当两个系统都退火至基质软化点时,加合物信号衰减,自由自旋区域中显示出各向同性单重态。这个信号在炔丙醇系统中特别强。g值和线宽与最近报道的由银卤化物基质中的光解形成的Ag0n潜影粒子的CESR信号相似。
  • Gmelin Handbuch der Anorganischen Chemie, Gmelin Handbook: Ag: MVol.B1, 6.22.2.4, page 531 - 532
    作者:
    DOI:——
    日期:——
  • Zhitnikov, R. A.; Mel'nikov, N. I.; Orbeli, A. L., Zhurnal Strukturnoi Khimii, 1968, vol. 9, p. 536 - 539
    作者:Zhitnikov, R. A.、Mel'nikov, N. I.、Orbeli, A. L.
    DOI:——
    日期:——
  • Gmelin Handbuch der Anorganischen Chemie, Gmelin Handbook: Ag: MVol.A2, 18, page 152 - 154
    作者:
    DOI:——
    日期:——
  • First Clusters of Ag+ Ion Reduction in Aqueous Solution
    作者:E. Janata、A. Henglein、B. G. Ershov
    DOI:10.1021/j100093a033
    日期:1994.10
    Ag+ ions are reduced in aqueous solutions by a short pulse of high-energy radiation. At the low radiation dose applied, second-order reactions of the early intermediates are negligible. Three elementary processes occur during microseconds after the pulse, in each of which Ag+ is a reactant: e(aq)(-) + Ag+ --> Ag-0 (k = 4.8 x 10(10) M(-1) s(-1)); Ag-0 + Ag+ --> Ag-2(+) (k = 8.5 x 10(9) M(-1) s(-1)); Ag-2(+) + Ag+ --> Ag-3(2+) (k = 2.0 X 10(9) M(-1) s(-1)). The reactions overlap temporally. Computer simulation is used to obtain the rate constants and the absorption spectra of the three species involved. Ag-3(2+) has not yet been detected in water at ambient temperature; it was known to exist only in zeolite cages and frozen organic glasses.
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