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¾§Ìåѧ±¨CµÄÉó¸åÈËÌá³öµÄÎÊÌ⣬ϣÍûÄÜÔÚ²»ÖØÐÂÊÕ¼¯Êý¾ÝµÄÇé¿öϸøÉó¸åÈËÒ»¸öÍêÃÀµÄ´ð¸´¡£×ż±°¡£¬±ÏÒµÔÚ¼´£¡ÆÚ´ý¸ßÊÖ¶¦Á¦ÏàÖú£¡ 2. Two of the N atoms are flagged in the CIF as riding, which makes no sense: N3 N 0.25891(17) -0.09651(4) 1.18650(16) 0.0477(6) Uani 1 2 d R . . N4 N 0.28998(17) -0.03920(4) 1.36737(16) 0.0448(6) Uani 1 2 d R . . Please note the alerts in the attached checking report which indicate this problem, but which appear to have been ignored. 3. The very rapid increase in the R factors as theta increases beyond 20 degrees suggests that there may be systematic problems with the diffraction data: =========================================================== Theta sin(Th)/Lambda # R1 wR2 S av(I/SigW) av(I) av(SigW) ------------------------------------------------------------------------------- 12.38 0.302 398 0.037 0.119 1.376 10.79 1238.93 93.78 15.68 0.380 389 0.046 0.123 1.073 7.39 182.42 17.42 18.02 0.435 389 0.048 0.130 0.968 6.02 171.10 18.90 19.90 0.479 402 0.056 0.157 1.009 5.10 133.98 17.58 21.51 0.516 397 0.073 0.199 0.951 3.43 72.51 14.73 22.94 0.548 399 0.093 0.270 0.964 2.58 47.33 13.62 24.22 0.577 396 0.106 0.321 0.864 1.79 31.57 13.67 25.40 0.603 395 0.134 0.436 0.860 1.30 21.16 13.85 26.49 0.628 390 0.167 0.495 0.863 1.08 19.22 14.59 27.52 0.650 383 0.178 0.533 0.841 0.99 18.67 16.43 28.00 0.660 156 0.262 0.667 0.831 0.82 14.82 17.68 ======================================================= The outer data are little better than noise, pointing to the need for low-temperature data collection. |
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