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N-acetyl-DL-tryptophanatometal(II) (Co(II), Ni(II) and Zn(II) complexes and their amines adducts

✍ Scribed by Giuseppe Marcotrigiano; Luciano Antolini; Ledi Menabue; Gian Carlo Pellacani

Publisher
Elsevier Science
Year
1979
Tongue
English
Weight
476 KB
Volume
35
Category
Article
ISSN
0020-1693

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✦ Synopsis

First row transition metal(H) complexes of N-ace@-DL-tryptophan of the type M(Actrp),*xHzO (M = Co(H), Zn(II) and x = 2; M = Ni(II) and x = 3; Actrp = N-acetyl-DL-tryptophanato ion) and their amine adducts of the type M(Actrp),B, (B = py. 3-pit and 4-pie) were prepared and investigated by means of magnetic measurements, electronic and inji-ared spectroscopy. The diamagnetic zinc(II) complexes were also investigated in solution by means of 'H n.m.r. spectroscopy. All the experimental results on solid complexes suggest that the carboxylate is coordinated to the metal atom. The effect of the amines in axial position results in a weakening of the strength of the amino acid in-plane coordination. 'H n.m.r. spectm of the diamagnetic zinc(II) complexes indicate that the same type of amino acid coordination also exists in solution,

πŸ“œ SIMILAR VOLUMES

Tetrakis(selenodiazole)porphyrazines. 2:
Tetrakis(selenodiazole)porphyrazines. 2: Metal complexes with Mn(II), Co(II), Ni(II), and Zn(II)
✍ Silvia Angeloni; Elvira M. Bauer; Claudio Ercolani; Irina A. Popkova; Pavel A. S πŸ“‚ Article πŸ“… 2001 πŸ› John Wiley and Sons 🌐 English βš– 128 KB

The present report describes two series of new porphyrazine macrocycles derived from tetrakis(selenodiazole)porphyrazine, TSeDPzH ~2~, having the formulae [ TSeDPzM ]( CH ~3~ COOH )( H ~2~ O )~x~ M = Mn (II), Co (II), Ni (II), Zn (II); x = 4–6) and [ TSeDPzM ( py )]( CH ~3~ COOH )( H ~2~ O )~x~ ( M