http://qiserver.ugr.es/cod/9014016.cif
http://qiserver.ugr.es/cod/9014140.cif
http://qiserver.ugr.es/cod/9014264.cif
http://qiserver.ugr.es/cod/9014327.cif
http://qiserver.ugr.es/cod/9014652.cif