Crystals of a new 1,4-dimethyl cucurbituril(TMeQ6) with Silver(I) ion were synthesized, and the structure was determined by X-ray diffraction technique. There are two kinds of TMeQ6 A and B which formed molecular encapsulates with two silver ion lids in the self-assembled entities. One dimensional supramolecular tubes are formed from the encapsulates A, and two dimensional molecular sieves are formed from the encapsulates B, the tubes and the sieves stack together alternately in the self-assembled entities. CCDC: 271401.国家自然科学基金资助项目(No.20362003);; 科技部国际科技合作重点项目计划(No.2003DF000030);; 贵州省省长资金项目;; 贵州省国际科技合作重点项目计划(No.2005400101
