The dicopper(II) complex of the bistren cage 1, in an aqueous solution buffered at pH = 8, incorporates polyatomic anions (NCO-, NCS-, N-3(-), SO42-, HCO3-, CH3COO-) according to a 1:1 stoichiometry. Log K values range over the 2-5 interval and show a sharp peak selectivity with respect to the anion 'bite', i.e. the distance between the two proximate donor atoms of each anion. The peak maximum lies at about 2.3 Angstrom, a bite length corresponding to the N-3(-) anion. Thus, the dicopper cryptate does not recognize anion size or coordinating tendencies, but simply recognizes the bite length.
Anion Recognition by a Dicopper(II) Cryptate
FABBRIZZI, LUIGI;PALLAVICINI, PIERSANDRO;TAGLIETTI, ANGELO MARIA
1995-01-01
Abstract
The dicopper(II) complex of the bistren cage 1, in an aqueous solution buffered at pH = 8, incorporates polyatomic anions (NCO-, NCS-, N-3(-), SO42-, HCO3-, CH3COO-) according to a 1:1 stoichiometry. Log K values range over the 2-5 interval and show a sharp peak selectivity with respect to the anion 'bite', i.e. the distance between the two proximate donor atoms of each anion. The peak maximum lies at about 2.3 Angstrom, a bite length corresponding to the N-3(-) anion. Thus, the dicopper cryptate does not recognize anion size or coordinating tendencies, but simply recognizes the bite length.File in questo prodotto:
Non ci sono file associati a questo prodotto.
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
