Isomer selective ion-exchange intercalation of nitrophenolates into the layered double hydroxide [LiAl2(OH)6]Cl·xH2O†
Abstract
The anions 4-nitrophenolate (4-NP) and 2,4-dinitrophenolate (2,4-DNP) undergo anion-exchange intercalation with [LiAl2(OH)6]Cl·xH2O, ([Li-Al-Cl] LDH), to yield the fully exchanged intercalates [LiAl2(OH)6]{4-NP}·2H2O and [LiAl2(OH)6]{2,4-DNP}·H2O respectively. 4-NP can be selectively intercalated in [Li-Al-Cl] LDH from an equimolar mixture of 2-nitrophenolate (2-NP), 3-nitrophenolate (3-NP) and 4-nitrophenolate (4-NP). Intercalation of 2,4-DNP is competitive with intercalation of 4-NP into [Li-Al-Cl] LDH from an equimolar solution of the two NPs. The observed intercalation preferences of these two NPs is found to be dependent on both temperature and