A vanadium(IV) complex [VO(sal-L-Trp)(H2O)] 1 (sal-L-Trp = N-salicylidene-L-tryptophanate) has been isolated from solutions containing oxovanadium(IV), L-tryptophan and salicylaldehyde. From solutions also containing quinolin-8-ol (Hhquin) a similar oxovanadium(IV) complex VO(sal-L-Trp)·Hhquin·2H2O 2 was isolated. From solutions of 1 in water-pyridine, orange-brown crystals of [HPy+]4[C14H13N2 +]2[V10O286-] 3 were isolated and characterised by X-ray diffraction. The mechanism proposed for this reaction involves the attack of a pyridine molecule at the β-carbon atom of the tryptophan residue in 1.
|Number of pages||6|
|Journal||Journal of the Chemical Society - Dalton Transactions|
|Publication status||Published - 7 Dec 1998|