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Vanadocene complexes of amino acids containing secondary amino group: The first evidence of O,O-bonded carboxylic group to vanadocene(IV) moiety.
Authors: Vinklárek Jaromír | Dědourková Tereza | Honzíček Jan | Růžička Aleš
Year: 2010
Type of publication: článek v odborném periodiku
Name of source: Journal of Inorganic Biochemistry
Publisher name: Elsevier Science BV
Place: Amsterdam
Page from-to: 936-943
Titles:
Language Name Abstract Keywords
cze Vanadocenové komplexy aminokyselin obsahujících sekundární aminoskupinu: poprvé pozorovaná O,O-chelátově vázaná karbozylová skulina k vanadocenovému fragmentu. Reakce vanadocendichloridů (Cp2VCl2 a (C5H4Me)2VCl2) s aminokyselinami obsahujícími sekundární amino skupiny poskytují tři typy komplexů: a) sloučeniny s N,O-vázanou aminokyselinou, b) O-vázanou aminokyselinou a c) O,O-vázanou aminokyselinou. Komplexy s N,O-vázanou aminokyselinou a O-vázanou aminokyselinou byly pozorovány v případě L-prolinu a N-methylglycinu (NMG). Reakce s N-phenylglycinem (NPG) poskytuje O,O-chelát. Včechny tři typy komplexů byly charakterizovány spektroskopickými metodami. Struktury komplexů [(C5H4Me)2V(O-Pro)][BPh4], [Cp2V(O-Pro)2][PF6]2, [Cp2V(N,O-NMG)][BPh4], [(C5H4Me)2V(N,O-NMG)][BPh4], [Cp2V(O-NMG)2][Cl]2, [(C5H4Me)2V(O-NMG)2][Cl]2 a [(C5H4Me)2V(O,O-NPG)][BPh4] byly určeny rentgenostrukturní analýzou. vanadocenové komplexy; aminokyseliny; RTG; EPR
eng Vanadocene complexes of amino acids containing secondary amino group: The first evidence of O,O-bonded carboxylic group to vanadocene(IV) moiety. Reaction of vanadocene dichlorides (Cp2VCl2 and (C5H4Me)2VCl2) with amino acids containing secondary amino groups gives three types of complexes: a) compounds with N,O-bonded amino acid, b) O-bonded amino acids and c) O,O-bonded amino acid. The complexes with N,O-bonded amino acid and O-bonded amino acids were observed in the case of L-proline and N-methylglycine (NMG). Reactions with N-phenylglycine (NPG) give O,O-chelates as the sole products. All three types of the complexes were characterized by spectroscopic methods. Structures of [(C5H4Me)2V(O-Pro)][BPh4], [Cp2V(O-Pro)2][PF6]2, [Cp2V(N,O-NMG)][BPh4], [(C5H4Me)2V(N,O-NMG)][BPh4], [Cp2V(O-NMG)2][Cl]2, [(C5H4Me)2V(O-NMG)2][Cl]2 and [(C5H4Me)2V(O,O-NPG)][BPh4] were determined by X-ray crystallography. vanadocene complexes; amino acids; X-ray; EPR

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