1.
Chem Commun (Camb)
; (9): 944-5, 2002 May 07.
Article
in English
| MEDLINE
| ID: mdl-12123060
ABSTRACT
A fruitful combination of potentiometry, absorption spectrophotometry, ESMS and 1H NMR enabled the characterisation of two caesium complexes with norbadione A and the determination of the respective stability constants of a mononuclear and a dinuclear caesium complex at pH approximately 6; a preliminary study allowed the assignment of five protonation sites of this pigment; a positively cooperative binding of the second Cs+ cation was observed.