A　complex　of　cadmium　chloride　with　an　N5O3　cryptand　L　(1,4,13,16,27-pentaaza-6,9:18,21:29,32-tribenzo-10,22,33-trioxa-bicyclopentatr-iacontane),　[CdL)H2O)][CdCl4](.)0.5H(2)O　(1),　was　synthesized　and　characterized　by　X-ray　diffraction　and　NMR　studies.　The　colourless　crystals　are　orthorhombic,　space　group　Pna2(1)　with　a=25.2257(4),　b=16.5098(3),　c=9.9615(1)Angstrom,　Z=4,　D-c=1.526gcm(-3)　and　R=0.0312.　The　Cadmium　atoms　in　[CdL(H2O)](2+)　and　in　[CdCl4](2-)　have　trigonal　bipyramidal　and　tetrahedral　coordination　spheres,　respectively.　The　conformation　of　the　ligand　in　the　title　compound　is　endo-endo　and　the　distance　between　the　two　bridgehead　nitrogen　atoms　in　L　is　10.023(7)Angstrom.