Syntheses and Properties of Symmetrical Cage Compounds, in which All Six, Eight or Ten Lone Pairs on Nitrogen Atoms at Bridgehead or Intervening Pyridine Rings are Oriented toward the Central Cavity.

合成了桥头堡或中间吡啶环上氮原子上的6对、8对或10对孤对都指向中心腔的三维隐域。该化合物的6个苯环、4个苯环或6个苯环全部被吡啶环取代，作为它们的碱金属隐物。通过增加中间吡啶环的数量来增强络合能力。二甲基乙烯四（2,6-甲苯）毒胺的初步x射线分析。KC10 - 4配合物表明，K^+离子位于隐体的中心腔。

Three dimensional Cryptands, in which all six, eight or ten lone pairs on nitrogen atoms at bridgehead or intervening pyridine rings are oriented toward the central cavity, were synthesized.The compounds, in which of the six benzene rings, four or all six rings are replaced by the pyridine rings, were obtained as their alkali metal cryptates. Complexation ability was enhanced by increasing number of intervening pyridine rings.Preliminary X-ray analysis of dimetaxylylenetetra(2,6-lutidylene)tetramine. KC10 4 complex shows that K^+ ion locates in the central cavity of the cryptand.