I tried to generate 3D structures with cxcalc by
cat smifile.smi | cxcalc majormicrospecies -H 7.4 -f sdf | cxcalc lowestenergyconformer
This command produces 3D structures, but it does not generate the conformer with the lowest energy for example in the case of allene (C=C=C). There is a thread about this molecule here: https://www.chemaxon.com/forum/ftopic5714.html
Is it possible to change the energy minimization rotine used by cxcalc, that it uses the hyperfine criterion?