Complexability of o-bisguanidinobenzenes with arsenic and phosphoric acids in solution and solid states, and the potential use of their immobilized derivatives as solid base ligands for metal salts and arsenic acid.
The role of o-bisguanidinobenzenes (BGBs) as new Brønsted base ligands for arsenic and phosphoric acids was examined. In solution state, complexation was evaluated by Job's plot in (1)H NMR experiment, indicating a 1:1 complex formation, whereas in solid state crystalline structures of complexes obtained were addressed by X-ray crystallographic analysis and/or solid state (13)C NMR experiment, in which 1:2 complexes between the BGB and the acid components were normally formed. Based on these results, Merrifield and Hypogel resin-anchored BGBs were designed and prepared as the corresponding polymer-supported host ligands. Evaluation of their coordination ability with metal salts (ZnCl(2) and CoCl(2)) and arsenic acid in aqueous media by ICP-MS showed that the latter Hypogel resin-anchored BGBs acted as effective immobilized base ligands.
Ito
Tomoya
T
Department of Medicinal Organic Chemistry, Graduate School of Pharmaceutical Sciences, Chiba University, 1-33 Yayoi, Inage, Chiba, 263-8522, Japan.
Suda
Koji
K
Kumamoto
Takuya
T
Nakanishi
Waka
W
Watanabe
Toshiko
T
Ishikawa
Tsutomu
T
Seki
Hiroko
H
Kawahata
Masatoshi
M
Yamaguchi
Kentaro
K
Ogura
Yasumitsu
Y
Suzuki
Kazuo T
KT
D001149:Arsenates / Q000737:chemistry*; D001555:Benzene Derivatives / Q000138:chemical synthesis / Q000737:chemistry*; D002247:Carbon Isotopes; D018360:Crystallography, X-Ray; D006146:Guanidines / Q000138:chemical synthesis / Q000737:chemistry*; D008024:Ligands; D008670:Metals / Q000737:chemistry; D008958:Models, Molecular; D019906:Nuclear Magnetic Resonance, Biomolecular; D010756:Phosphoric Acids / Q000737:chemistry*; D012492:Salts / Q000737:chemistry; D044366:Transition Temperature; D014874:Water Pollutants, Chemical; D018508:Water Purification
D001149:Arsenates; D001555:Benzene Derivatives; D002247:Carbon Isotopes; D006146:Guanidines; D008024:Ligands; D008670:Metals; D010756:Phosphoric Acids; D012492:Salts; D014874:Water Pollutants, Chemical; C025657:arsenic acid