http://qiserver.ugr.es/cod/2100211.cif
http://qiserver.ugr.es/cod/2100218.cif
http://qiserver.ugr.es/cod/2100220.cif
http://qiserver.ugr.es/cod/2300002.cif
http://qiserver.ugr.es/cod/2300057.cif