Chemistry Letters, Vol.39, No.6, 576-577, 2010
Amino Acid Spin Labels. An Application of Chelation Ability to a Nickel(II) Ion
NN-CH2-substituted L-alanine methyl ester (NNCH2-L-Ala-OMe) and beta-alanine ethyl ester (NNCH2-beta-Ala-OEt) were prepared, where NN stands for 4,4,5,5-tetramethylimidazolin-1-oxyl 3-oxide. Their nickel(II) perchlorate complexes with a metal/ligand ratio of 1/2 were structurally and magnetically characterized.