http://qiserver.ugr.es/cod/2300646.cif
http://qiserver.ugr.es/cod/2300647.cif
http://qiserver.ugr.es/cod/2300648.cif
http://qiserver.ugr.es/cod/2300649.cif
http://qiserver.ugr.es/cod/2300661.cif
http://qiserver.ugr.es/cod/2300662.cif