Insulin mimetic peroxovanadium complexes: preparation and structure of potassium oxodiperoxo(pyridine-2-carboxylato)vanadate(V), K2[VO(O2)2(C5H4NCOO)].2H2O, and potassium oxodiperoxo(3-hydroxypyridine-2-carboxylato)vanadate(V), K2[VO(O2)2(OHC5H3NCOO)].3H2O, and their reactions with cysteine

The complexes potassium oxodiperoxo(pyridine-2-carboxylato)vanadate(V), K 2 [VO(O 2 ) 2 (C 5 H 4 NCOO)].2H 2 O (1), and potassium oxodiperoxo(3-hydroxypyridine-2-carboxylato)vanadate(V), K 2 [VO(O 2 ) 2 (OHC 5 H 3 NCOO)].3H 2 O (2), were prepared, and their structures were determined: 1, Cc