Dear all, Does anyone have any idea where I can get force field parameters for Mn2+ ions coordinated to carboxylate-type oxygens??? I will be very grateful if anyone can help... . Dra. Nelilma C. Romeiro Modelagem Molecular Far-Manguinhos Tel: 3977-2457/2458 e-mail: Nelilma at far.fiocruz.br