http://qiserver.ugr.es/cod/1007076.cif
http://qiserver.ugr.es/cod/1007077.cif
http://qiserver.ugr.es/cod/1008924.cif
http://qiserver.ugr.es/cod/1008925.cif
http://qiserver.ugr.es/cod/1537601.cif