cadmium dimer

• 分子结构分类: 无机化合物 - 均相金属化合物 - 均相过渡金属化合物
• 英文名称: cadmium dimer
• 英文别名: cadmium
• 化学式: Cd₂
• 分子量: 224.82
• InChiKey: PBHRBFFOJOXGPU-UHFFFAOYSA-N

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：

  镉 以 neat (no solvent) 为溶剂， 生成 cadmium dimer
  参考文献：
  名称：

  Laser excitation spectroscopy of the B ¹Σ⁺_u(O⁺_u)←a ³Π_g(O⁺_g) transition of Cd₂: Vibrational analysis and rotational structure

  摘要：

  The B 1Σ+u←a 3Πg transition of Cd2 (natural abundance) and 114Cd2 has been observed by laser excitation spectroscopy and analyzed. By exciting the Cd2 B←a transition in the visible (560≤λ≤730 nm) while monitoring B 1Σ+u→X 1Σ+g (bound→free) emission in the ultraviolet (∼270–310 nm), more than 40 red-degraded vibrational bands were recorded. Analysis of the spectrum has yielded vibrational constants for both the a 3Πg and B 1Σ+u states: ωe″=153.6±4.0 cm−1, ωe″xe″=0.52±0.06 cm−1, ωe′=105.3±1.0 cm−1, and ωe′xe′=0.44±0.03 cm−1. In addition, ΔRe≡ReB−Rea was determined to be 0.31±0.03 Å. Rotational structure has been partially resolved for 114Cd2 bands in the 620–655 nm and 719–723 nm regions, and the spontaneous emission lifetime of the a 3Πg state and the rate constant for quenching of Cd2 (a 3Πg) by collisions with background Cd atoms have been determined to be 8.6±2.5 μs and (2.2±0.3)×10−13 cm3 s−1, respectively. Also, analysis of the B→X emission (Condon internal diffraction) spectra produced when specific B 1Σ+u vibrational levels are populated has yielded ReX−ReB=0.95±0.02 Å.

  DOI：

  10.1063/1.472526

文献信息

• Formation of cadmium chlorides via cadmium dissolution in chloride melts
  作者：V. F. Kozin、A. A. Omel’chuk

  DOI：10.1134/s0020168506010158

  日期：2006.1

  The kinetics and mechanism of the formation of complex Cd(I) ions via the reaction of metallic cadmium with Cd2+ ions in the Cd-0-CdCl2-ZnCl2-NH4Cl system are studied spectroscopically. The formation of Cd-2(2+) and Cd-2(3+) is evidenced by absorption bands around 270 and 335 nm, respectively, in the electronic spectrum of the melt. The anode current efficiency is determined for cadmium electrorefining in a chloride melt. A mechanism is proposed for the anodic dissolution of cadmium at different current densities and process temperatures.