Cadmium nuclear magnetic resonance

Armitage, I.M., Pajer, R.T., Uiterkamp, A.J.M.S., Chlebowski,J.F. and Coleman, J.E. (1976) Cadmium-133 Fourier Transform nuclear magnetic resonance of cadmium(II) carbonic anhydrase and cadmium(II) alkaline phosphatase./. Am. Chem. Soc., 98, 5710-5712. 

Collected Phase Information for Cerium-Cadmium Alloys. A partial phase diagram for the cerium-cadmium system is presented in Figure 1. The room temperature results are based on x-ray studies by Iandelli and Ferro (9), who studied slowly cooled samples. However, their CeCd6 is shown as a dashed line because nuclear magnetic resonance studies by Jackson and the authors (10) have shown that the compound is unstable at room temperature and can decompose to metallic cadmium and CeCd 4i5. Because of probable kinetic barriers, the absence of compounds intermediate between cadmium and CeCd 6 does not indicate that these intermediates are unstable at room temperature. 

J. A. Jackson, also of this laboratory, has made room temperature nuclear magnetic resonance studies of the Knight shift of cadmium in slowly cooled CeCd, 45 alloys with different compositions and different histories. All CeCd 4 5 samples tested showed a major peak at almost the same position and shifted from that of metallic cadmium. One sample showed only this peak, while others clearly showed satellite peaks either at larger or at smaller shift. Possibly some samples had small amounts of both satellite peaks, and there was apparently some further difference in the shapes of satellite peaks and of the major peak these latter observations are tenuous, however, since they were near the resolution limit of the apparatus. The differences apparently do not correlate simply with composition however, they may correlate with differences in microphase structures. 

KH Chung, C-H Moon. Cadmium-113 nuclear magnetic resonance studies of cadmium(II)-carboxylate complexes in aqueous solution. J Chem Soc Dalton Trans 75—78, 1996. 

The quarterrylene (49) and other o/igo(peri-naphthylene)s, which are large condensed PAHs with interesting fluorescence behavior, have been synthesized in an overall three-step aryl-aryl coupling sequence from suitably substituted naphthalenes. Electron paramagnetic resonance (EPR) and nuclear magnetic resonance (NMR) investigations indicate, that this reaction proceeds via the dianions of 47 and 48, which were oxidized with cadmium chloride to the neutral hydrocarbons. 

Fuhr, B.J., Rabenstein, D.L., 1973. Nuclear magnetic resonance studies of the solution chemistry of metal complexes. IX. The binding of cadmium, zinc, lead and mercury by glutathione. J. Am. Chem. Soc. 95, 6944-6950. 

Cadmium-113 nuclear magnetic resonance studies of the cadmium substituted bovine superoxide dismutase were carried out Only a very small chemical-shift difference between the 2 Cd(Il) protein (Cd(II) is bound to the zinc site and the copper site is unoccupied) and the 2 Cd(ll)—2 Cu(I) enzyme (analogous to the reduced form of the native protein) was found. This was interpreted in that the imidazolate bridge is protonated at the Cu site after reduction. 

Sudmeier, J. L., Bell, S. J., Storm, M. C., and Dum, M. F., 1981, Cadmium-113 nuclear magnetic resonance studies of bovine insulin Two-zinc hexamer specifically binds calchmi, /ence212 560-562. 

The most often studied complexes of MT with metals are complexes of zinc, copper and cadmium ions. Nuclear magnetic resonance (NMR) [3, 5], circular dichroism, and ultraviolet absorption spectroscopy [4, 121] are enabling to study the structure of these complexes. 

CADMIUM-113 NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY IN BIOINORGANIC CHEMISTRY. A REPRESENTATIVE SPIN 1/2 METAL NUCLIDE... 

---