Journal of the Brazilian Chemical Society, Vol 14, Iss 5, Pp 744-749 (2003) Journal of the Brazilian Chemical Society, Volume: 14, Issue: 5, Pages: 744-749, Published: OCT 2003 Journal of the Brazilian Chemical Society v.14 n.5 2003 Journal of the Brazilian Chemical Society Sociedade Brasileira de Química (SBQ) instacron:SBQ