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Long-range spin-spin interactions in the 13C-n.m.r. spectra of the nickel(II) complex of the Schiff base of (S)-N-benzylproline (2-benzoylphenyl)amide and glycine. Quantum-chemical calculations and possible donation of electron density from the π-system of the benzyl group to nickel

Alexander Popkov ; Vratislav Langer (Institutionen för oorganisk miljökemi) ; Peter A. Manorik ; Tomas Weidlich
Transition Metal Chemistry ( ISSN 0340-4285). Vol. 28 (2003), 4, p. 475-481.
[Artikel, refereegranskad vetenskaplig]

Long-range [nJ(13C, 13C), nJ(15N, 15N) and nJ(15N, 13C)] interactions in the 13C-n.m.r. spectra of CDCl3 solutions of selectively labeled nickel(II) complexes of the Schiff base derived from (S)-N-benzylproline (2-benzoylphenyl)amide and glycine provide experimental evidence for the necessity of the donation of electron density from the π-system of the benzyl ring to the nickel orbitals. No such interactions were observed in (2H)DMSO solutions, where the complex exists in a different conformation.

Nyckelord: 13C-n.m.r., quantum-chemical calculations, X-ray structure, electron density donation



Denna post skapades 2006-08-29. Senast ändrad 2007-10-18.
CPL Pubid: 3641

 

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Institutionen för oorganisk miljökemi (1900-2004)

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