Hi all, I'm modleing a complex with a copper ion Cu(1). I searched for copper paramters in the modlib/restyp.lib but I did not find them. Are topology and suitable forcefield parameters available? Many thanks edoardo -- Dr Edoardo Saccenti CERM Magnetic Resonance Center University of Florence Fiorgen Foundation Via Luigi Sacconi n° 6 50019 Sesto Fiorentino (FI) Italy Tel: +39 055 4574281