Structural characterization of alpha-amino acid complexes of molybdates: A spectroscopic and DFT study

TitleStructural characterization of alpha-amino acid complexes of molybdates: A spectroscopic and DFT study
Publication TypeJournal Article
Year of Publication2015
AuthorsBiancalana, L, Bortoluzzi, M, Forte, C, MARCHETTI, F, Pampaloni, G
JournalRSC Advances
Volume5
Pagination9010–9018
ISSN20462069 (ISSN)
KeywordsAlpha-amino acids, Amino acids, Bridging coordination, Carboxylate groups, Carboxylation, General formulas, IR and NMR spectroscopy, Molybdenum compounds, Molybdenum oxide, Nuclear magnetic resonance spectroscopy, Polynuclear structure, Sodium, Structural characterization, Zwitterionic amino acid
Abstract

The reactions of L-enantiopure $\alpha$-amino acids (aaH) with Na2MoO4 led to the high-yield isolation of Mo(vi) complexes of general formula Mo2O4(OH)4(aaH). A similar outcome was achieved by using (NH4)6Mo7O24 in the place of Na2MoO4. Solid-state IR and NMR spectroscopy indicated the presence of cis-MoO2 units linked by a zwitterionic amino acid ligand, via a bidentate bridging coordination through the carboxylate group. Thus possible dinuclear and polynuclear structures are proposed on the basis of DFT calculations. © The Royal Society of Chemistry 2015.

URLhttp://www.scopus.com/inward/record.url?eid=2-s2.0-84921322024&partnerID=40&md5=6cec7d458720219a0506196822af00c3
DOI10.1039/c4ra14236e