This Addition and Correction provides a new Table 3 withthe correct fractional coordinates with typos corrected.The coordinates x = 1/4 (y = 1/4 (= 0.25)) in Table 3 in this paper were mistakenly typed as x = 1; i.e., we forgot to include ''/4'' etc. These typos do not change any result or interpretation presented in our paper. Table 3 should read as follows.According to the new Table 3, on page 8139 the sentence should read: It is evident from Table 3 that Lil and Li2 are slightly displaced from their ''ideal'' positions at (0, 0.25, 0) and (0.25, 0, 0).________________________________________________
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