𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Unusual 13C Chemical Shifts of Transition Metal-Carbene Complexes

✍ Scribed by Priv.-Doz. Dr. Cornelius G. Kreiter; Dr. Victor Formáček

Publisher
John Wiley and Sons
Year
1972
Tongue
English
Weight
193 KB
Volume
11
Category
Article
ISSN
0044-8249

No coin nor oath required. For personal study only.

✦ Synopsis

The drop in current after attainment of the current maximum parallels the taking up of the second electron in the uncatalyzed process. This removal of the 0; ion or the protonated HO, radical with increasing negative potential in the competing electrode reaction uses up the starting material for the catalytic process. The overall reaction course is envisaged as shown in the following scheme : j.

1 square-wave polarogram exhibits a flat wave at -0.36 V. Addition of water shifts the second wave into the first, thus indicating acceleration of HO, formation.

Addition of CN-ions (> M) deactivates the ironphthalocyanine complex. This poisoning can be understood in terms of the bridging complex as a displacement of 0; by CN-from the sixth coordination position.

📜 SIMILAR VOLUMES

Atropisomerism of Transition Metal Carbe
Atropisomerism of Transition Metal Carbene Complexes
✍ Prof. Dr. Henri Brunner; Prof. Dr. Ernst Otto Fischer; Dipl.-Chem. Manfred Lappu 📂 Article 📅 1971 🏛 John Wiley and Sons 🌐 English ⚖ 201 KB 👁 2 views

10 ml, and chromatographed on a silica gel column (Merck 0.05 to 0.2 mm; column dimensions 40 x 2 cm) at 0°C with hexane/benzene (4 : 1). The yellow zone is collected, the solvent removed in a high vacuum, and the residue recrystallized twice from n-pentane : pale yellow needles, m. p. 45 "C ; yield

13C NMR of Pd–aryl complexes. Chemical s
13C NMR of Pd–aryl complexes. Chemical shifts and Pd π-back-bonding
✍ Eloisa Martinez-Viviente; Paul S. Pregosin; Matthias Tschoerner 📂 Article 📅 2000 🏛 John Wiley and Sons 🌐 English ⚖ 86 KB

## 13 C NMR spectra for a series of dinuclear acetate-bridged cyclopalladated N-methyl-N-nitrosoanilines and several mononuclear ortho-substituted palladium-aryl complexes with the chelating nitrogen ligands TMEDA and bipyridine were recorded. The coordination chemical shifts for the para carbons