http://qiserver.ugr.es/cod/1010025.cif
http://qiserver.ugr.es/cod/1011012.cif
http://qiserver.ugr.es/cod/9000018.cif
http://qiserver.ugr.es/cod/9011409.cif
http://qiserver.ugr.es/cod/9012076.cif