, . (3,52 /3) . . , , 35 , . (Mykolajewycz et al., 1964), 3,51554 /3, 3, 51477 /3. 35 3,51532 /3. , II , I. . (Lawan et al., 1965) II. , α = 3,56689 0,00001 Ǻ, , , = 3,51515 + 0,00001 /3, 蠠 w = 3,51527/ /3.

, .