TY - JOUR
T1 - Selective solvent extraction of tetrahedrally-coordinating transition metal ions from acidic aqueous media using benzimidazole-phosphinate ligands
T2 - Specificity for zinc(II) over copper(II)
AU - Edlin, Christopher D.
AU - Parker, David
AU - Perry, Justin J.B.
AU - Chartroux, Christine
AU - Gloe, Karsten
PY - 1999
Y1 - 1999
N2 - The synthesis, solution complexation behaviour and solvent extraction ability of related chelating mono- and bis-(benzimidazole)phosphinate ligands 8 and 9 has been assessed. 31P NMR, fluorescence and absorption spectroscopy and electrospray mass spectrometry revealed preferential formation of 1:1 complexes with the divalent ions Zn, Co and Ni, and ML2 complex formation with the bidentate ligand. Extraction studies showed that 9 extracted Zn > Co >> Ni with no extraction of copper(n), but avid extraction of copper(I), generated in situ, consistent with the ligand's preference for the binding of tetrahedrally-coordinating metal ions.
AB - The synthesis, solution complexation behaviour and solvent extraction ability of related chelating mono- and bis-(benzimidazole)phosphinate ligands 8 and 9 has been assessed. 31P NMR, fluorescence and absorption spectroscopy and electrospray mass spectrometry revealed preferential formation of 1:1 complexes with the divalent ions Zn, Co and Ni, and ML2 complex formation with the bidentate ligand. Extraction studies showed that 9 extracted Zn > Co >> Ni with no extraction of copper(n), but avid extraction of copper(I), generated in situ, consistent with the ligand's preference for the binding of tetrahedrally-coordinating metal ions.
UR - http://www.scopus.com/inward/record.url?scp=0032802027&partnerID=8YFLogxK
U2 - 10.1039/a903534f
DO - 10.1039/a903534f
M3 - Article
AN - SCOPUS:0032802027
SN - 1144-0546
VL - 23
SP - 819
EP - 826
JO - New Journal of Chemistry
JF - New Journal of Chemistry
IS - 8
ER -