http://qiserver.ugr.es/cod/1509846.cif
http://qiserver.ugr.es/cod/1509860.cif
http://qiserver.ugr.es/cod/1509867.cif
http://qiserver.ugr.es/cod/1509868.cif
http://qiserver.ugr.es/cod/1522598.cif