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¡°- First of all, extracting the RES and HKL from the CIF with ShredCIF gives a checksum error, which is also detected by checkCIF (resulting in the level G alert N.O.K. _shelx_res_checksum found in CIF). This means that the data in the CIF have been accidentally or deliberately manipulated after the final refinement. - Moreover, the weighting scheme used (WGHT 0.000000 20.000000) does not make a lot of sense to me and omitting a long list of reflections - obviously in hunt for a lower R factor - is by no means justified here. This is actually data manipulation. - Refinement as inversion twin using TWIN and BASF parameters is not recommended in the absence of significant anomalous scattering. The Flack x parameter of 0.23(15) you report is not reliable and unrealistic for purchased enantiopure material. After a re-refinement against all data using the suggested weighting scheme results in R1 = 0.1053 and Flack 0.08(6).¡± ÎÄÕÂÀïÓиö¾§Ì壬±¾À´²â³öÀ´RÖµÔÚ0.09£¬ÎÒÃǾõµÃÓеã¸ß£¬¶ÔÊý¾Ý½øÐÐÁËÔÙ´ÎÓÅ»¯¡£ÕâÊÇÉó¸åÈËÌáµÄÎÊÌâ¡£ È»ºóÉó¸åÈËÈÏΪÎÒÃÇ´¦ÀíÓÐÎÊÌ⣬Êý¾Ý¿ÉÒÉ£¬²âµ¥¾§µÄÀÏʦ˵£¬Ëû¾õ¶ÔÊý¾ÝµÄÓÅ»¯Ã»ÎÊÌ⣬ÊÇ¿ÉÒԵģ¬ÎÒ²»ÊÇרҵµÄ£¬²»ÊǺܶ®£¬Õâ¸öÉó¸åÈËÌáµÄÎÊÌâºÏÀíÂð£¿ÓÅ»¯Êý¾ÝÓÐÎÊÌâÂ𣿠|
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2Â¥2017-11-09 23:16:06
kakumon
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3Â¥2017-11-10 08:13:59
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omit¿ÉÒÔÓã¬ËûµÄÒâ˼ÊÇomitting a long list of reflections - obviously in hunt for a lower R factor£¬ÓÃÁËÌ«¶àµÄomitÃüÁ½ö½öÊÇΪÁË×·Çó½ÏµÍµÄRÖµ£¬Õâ¾Í²»ºÏÀíÁË£¬ È»ºóºóÃæÐÞèï¾§Ò²²»ÊǺܺÏÀí£¬ Éó¸åÈËÓÃÁËÁ½´Îmanipulation£¬ÈÏΪÄãÔÚ´Û¸ÄÊý¾Ý£¬Õâ¸öÎÊÌâºÜÑÏÖØµÄ |

4Â¥2017-11-10 08:57:19
kakumon
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5Â¥2017-11-10 09:26:06














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