Journal of the Brazilian Chemical Society v.12 n.2 2001 Journal of the Brazilian Chemical Society Sociedade Brasileira de Química (SBQ) instacron:SBQ Journal of the Brazilian Chemical Society, Vol 12, Iss 2, Pp 215-222 (2001) Journal of the Brazilian Chemical Society, Volume: 12, Issue: 2, Pages: 215-222, Published: APR 2001