http://qiserver.ugr.es/cod/1000032.cif
http://qiserver.ugr.es/cod/2300514.cif
http://qiserver.ugr.es/cod/2300549.cif
http://qiserver.ugr.es/cod/2300550.cif
http://qiserver.ugr.es/cod/2300551.cif
http://qiserver.ugr.es/cod/2300611.cif
http://qiserver.ugr.es/cod/2300612.cif