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Metal Complexes of Free Radicals. Part II: Identification and structures of radical complexes of alkaline earth metals and zinc

✍ Scribed by P. Clopath; A. v. Zelewsky

Book ID
102855259
Publisher
John Wiley and Sons
Year
1972
Tongue
German
Weight
818 KB
Volume
55
Category
Article
ISSN
0018-019X

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✦ Synopsis

Abstract

The formation of chelate complexes between free radicals and closed‐shell metal ions is observed by ESR. spectroscopy. High resolution spectra of 1:1 complexes formed between the radical anion of glyoxal‐bis‐(N‐t‐butylimine) (GLIR) and Mg^2+^, Ca^2+^ and Zn^2+^ are completely analysed. The complexes formed in dimethoxyethane or tetrahydrofuran solutions are Ca(GLIR)^+^, Mg(GLIR)X, Zn (GLIR)X and Zn(GLIR)Y^−^~2~, where X = Cl^−^, Br^−^, I^−^, and Y = CN^−^, NCS^−^. The formation of the heterometallic, binuclear cyanide‐bridged complex Zn(GLIR)Fe(CN)~6~^3−^ is also described. Isotropic coupling constants are given for protons and ^14^N in GLIR as well as for the metal nuclei and magnetic nuclei in the groups X and Y. Stabilities, structures and ESR. parameters of these radical complexes are discussed.

📜 SIMILAR VOLUMES

Solvent-free alkali and alkaline earth m
Solvent-free alkali and alkaline earth metal complexes of di-imine ligands
✍ Igor L. Fedushkin; Valentina A. Chudakova; Aleksandra A. Skatova; Georgii K. Fuk 📂 Article 📅 2005 🏛 John Wiley and Sons 🌐 English ⚖ 146 KB 👁 1 views

## Abstract Compound [(dph‐BIAN)Mg(THF)]~2~ (**2**) was prepared by reacting magnesium metal with 1,2‐bis[(2‐biphenyl)imino]acenaphthene (dph‐BIAN) in THF, followed by crystallization from toluene. Reaction of CaI~2~ with (dpp‐BIAN)Li~2~ in toluene afforded [(dpp‐BIAN)Li]~2~Ca (**3**) (dpp‐BIAN = 1

Solvent-free alkali and alkaline earth m
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## Abstract Compound [(dph‐BIAN)Mg(THF)]~2~(**2**) was prepared by reacting magnesium metal with 1,2‐ bis[(2‐biphenyl)imino]acenaphthene (dph‐BIAN) in THF, followed by crystallization from toluene. Reac‐ tion of CaI~2~ with (dpp‐BIAN)Li~2~ in toluene afforded [(dpp‐BIAN)Li]~2~Ca (**3**) (dpp‐BIAN =