http://qiserver.ugr.es/cod/1006047.cif
http://qiserver.ugr.es/cod/1006048.cif
http://qiserver.ugr.es/cod/1006177.cif
http://qiserver.ugr.es/cod/1006187.cif
http://qiserver.ugr.es/cod/2108841.cif
http://qiserver.ugr.es/cod/2310803.cif