http://qiserver.ugr.es/cod/1001823.cif
http://qiserver.ugr.es/cod/1001824.cif
http://qiserver.ugr.es/cod/1001825.cif
http://qiserver.ugr.es/cod/1001826.cif
http://qiserver.ugr.es/cod/1001827.cif
http://qiserver.ugr.es/cod/1001828.cif