http://qiserver.ugr.es/cod/1537298.cif
http://qiserver.ugr.es/cod/1541611.cif
http://qiserver.ugr.es/cod/1541612.cif
http://qiserver.ugr.es/cod/1541613.cif
http://qiserver.ugr.es/cod/1541614.cif
http://qiserver.ugr.es/cod/1542113.cif