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Tetrahydrogendecavanadate(V) and its binding to glycylglycine

Biagioli, Marco and Strinna Erre, Liliana and Micera, Giovanni and Panzanelli, Angelo and Zema, Michele (1999) Tetrahydrogendecavanadate(V) and its binding to glycylglycine. Inorganic Chemistry Communications, Vol. 2 (5), p. 214-217. ISSN 1387-7003. Article.

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DOI: 10.1016/S1387-7003(99)00053-2


An adduct between the tetrahydrogen form of decavanadate H4V10O282− and glycylglycine, with the stoichiometry Rb2H4V10O28·2Gly-Gly·2H2O, has been isolated and fully characterized. The crystal structure has been determined by X-ray diffraction data. The four hydrogen atoms of the polyvanadate framework could not be located directly, but structural features suggest strongly that they are associated with two triply bridging and two doubly bridging oxygens atoms. Two dipeptide molecules interact with the decavanadate polyanion via a hydrogen bond between O atoms of the carboxylic groups and a couple of doubly bridging surface atoms, which act as acceptors. In addition, there are hydrogen bonding contacts in which the nitrogen atoms and the carbonyl oxygen of the dipeptide molecules take part. IR spectroscopy proved useful in establishing the protonation state of Gly-Gly.

Item Type:Article
ID Code:1460
Uncontrolled Keywords:Polyoxovanadate complexes, dipeptide complexes, crystal structures
Subjects:Area 03 - Scienze chimiche > CHIM/03 Chimica generale e inorganica
Area 03 - Scienze chimiche > CHIM/01 Chimica analitica
Divisions:001 Università di Sassari > 01 Dipartimenti > Chimica
Publisher:Elsevier Science
Additional Information:Pubblicato online il 6 luglio 1999.
Deposited On:18 Aug 2009 10:05

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