Ultra-high-resolution mass spectrometry was used to investigate polyborate species in aqueous solution. The mass spectrum of boric acid revealed clusters of polyborate ions. Constituents with up to 19 B atoms were assigned and 15 species and their relationship were investigated in depth with collision-induced fragmentation. Based on the observed fragments, we proposed herein a potential fragmentation pathway for the observed polyborate molecules.
HuH.PennS.G.LebrillaC.B.BrownP.H., “Isolation and characterization of soluble boron complexes in higher plants (the mechanism of phloem mobility of boron)”, Plant Physiol.113, 649 (1997). doi: 10.1104/pp.113.2.649
2.
KimD.H.FaullK.F.NorrisA.J.EckhertC.D., “Borate–nucleotide complex formation depends on charge and phosphorylation state”, J. Mass Spectrom.39, 743 (2004). doi: 10.1002/jms.645
KimD.H.MarboisB.N.FaullK.F.EckhertC.D., “Esterification of borate with NAD(+) and NADH as studied by electrospray ionization mass spectrometry and B-11 NMR spectroscopy”, J. Mass Spectrom.38, 632 (2003). doi: 10.1002/jms.476
5.
EdwardsJ.O.RossV., “Structural principles of the hydrated polyborates”, J. Inorg. Nucl. Chem.15, 329 (1960). doi: 10.1016/0022-1902(60)80062-0
6.
MomiiR.K.NachtriebN.H., “Nuclear magnetic resonance study of borate—polyborate equilibria in aqueous solution”, Inorg. Chem.6, 1189 (1967). doi: 10.1021/ic50052a026
7.
SmithH.D.WiersemaR.J., “Boron-11 nuclear magnetic resonance study of polyborate ions in solution”, Inorg. Chem.11, 1152 (1972). doi: 10.1021/ic50111a056
8.
ThevenonM.F.PizziA., “Polyborate ions' influence on the durability of wood treated with non-toxic protein borate preservatives”, Holz Als Roh-Und Werkstoff61, 457 (2003). doi: 10.1007/s00107-003-0421-6
9.
AndersonJ.L.EyringE.M.WhittakerM.P., “Temperature jump rate studies of polyborate formation in aqueous boric acid”, J. Phys. Chem.68, 1128 (1964). doi: 10.1021/j100787a027
10.
MesmerR.E.BaesC.F.SweetonF.H., “Acidity measurements at elevated temperatures. VI. Boric acid equilibria”, Inorg. Chem.11, 537 (1972). doi: 10.1021/ic50109a023
11.
MayaL., “Identification of polyborate and fluoroborate ions in solution by Raman spectroscopy”, Inorg. Chem.15, 2179 (1976). doi: 10.1021/ic50163a036
12.
IngriN.LagerströmG.FrydmanM.SillenL.G., “Equilibrium studies of polyanions. II. Polyborates in NaClO4 medium”, Acta Chem. Scand.11, 1034 (1957). doi: 10.3891/acta.chem.scand.11-1034
13.
AttinàM.CacaceF.GrandinettiF.OcchiucciG.RicciA., “Positive ion chemistry of gaseous boric and polyboric acids”, Int. J. Mass Spectrom.117, 47 (1992). doi: 10.1016/0168-1176(92)80085-F
AttinàM.CacaceF.RicciA.GrandinettiF.OcchiucciG., “Gas-phase ion chemistry of H3BO3. Protonated orthoboric, metaboric and polyboric acids, and their anions in the gas phase”, J. Chem. Soc., Chem. Comm.66 (1991).
16.
GasparA.HarirM.LucioM.HertkornN.Schmitt-KopplinP., “Targeted borate complex formation as followed with electrospray ionization Fourier transform ion cyclotron mass spectrometry: Monomolecular model system and polyborate formation”, Rapid Commun. Mass Spectrom.22, 3119 (2008). doi: 10.1002/rcm.3713