http://qiserver.ugr.es/cod/9008261.cif
http://qiserver.ugr.es/cod/9008262.cif
http://qiserver.ugr.es/cod/9008263.cif
http://qiserver.ugr.es/cod/9008264.cif
http://qiserver.ugr.es/cod/9008265.cif
http://qiserver.ugr.es/cod/9008266.cif