用自制滴定量热计测定了2,3-苯并-8,11,15-三甲基-18-冠-6与Na,K,Rb,Cs,Mg,Ca,Sr,Ba共8种碱金属及碱土金属氯化物的配位作用,直接计算了配合物稳定常数与配位反应热函.所得结果表明,碱金属与碱土金属中K~+和BaS~(2+)的直径与冠醚腔径匹配最好,其稳定常数最高,而Ba~(2+)配合物稳定性又比K~+的高,因前者的离子-偶极键较后者强.碱金属配合物的稳定性顺序为K>Na>Rb>Cs,与电导法的结果一致.碱土金属配合物的稳定性顺序为Ba>Sr>Mg>Ca.热函的顺序与稳定常数的顺序一致. The contents of 2,3-benzo-8,11,15-trimethyl-18-crown-6 and 8 kinds of bases of Na, K, Rb, Cs, Mg, Ca, Sr and Ba were measured by a homemade titration calorimeter The results show that the diameters of K ~ + and BaS ~ (2+) in alkali metals and alkaline earth metals are the same as that of crown ethers The cavity diameter matches the best, the stability constant is the highest, and the stability of Ba 2+ complex is higher than K +, because the former ion-dipole bond is stronger than the latter.The stability of alkali metal complex The order of K> Na> Rb> Cs is consistent with that of conductivity method.The stability order of alkaline earth metal complexes is Ba> Sr> Mg> Ca.The order of enthalpy is consistent with the order of stability constant.