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xuwei0909

ÖÁ×ðľ³æ (ÖøÃûдÊÖ)

[½»Á÷] DFIX¼ÓÇâºóµÄBºÍC´íÎóÔõô½â¾ö?

ÀûÓÃÕâÁ½¸öÖ¸Áî¼ÓÇâºó²úÉúÈçÏÂBºÍC´íÎó¸ÃÈçºÎ½â¾ö?
DFIX 0.85 0.01 O1 H1W1 O1 H1W2 O2 H2W1 O2 H2W2 O3 H3W1 O3 H3W2 O4 H4W1 O4 H4W2
DFIX 1.35 0.02 H1W1 H1W2 H2W1 H2W2 H3W1 H3W2 H4W1 H4W2

Alert level B
PLAT731_ALERT_1_B Bond    Calc     0.85(5), Rep   0.850(10) ......       5.00 su-Ra     O3   -H3W1    1.555   1.555                                      
PLAT731_ALERT_1_B Bond    Calc     0.84(5), Rep   0.844(10) ......       5.00 su-Ra     O4   -H4W1    1.555   1.555      

Alert level C                              
PLAT731_ALERT_1_C Bond    Calc     0.85(3), Rep   0.845(10) ......       3.00 su-Ra      O4   -H4W2    1.555   1.555                                      
PLAT732_ALERT_1_C Angle   Calc     106(10), Rep      106(3) ......       3.33 su-Ra      H1W1 -O1   -H1W2    1.555   1.555   1.555
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xi2004

ÖÁ×ðľ³æ (Ö°Òµ×÷¼Ò)

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xuwei0909(½ð±Ò+10,VIP+0):лл!!!
×îºó²»ÓÃDFIX, ¸Ä³ÉAFIX 3 ÔõÑù?
»òÕß DFIX 0.85 0.02
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xi2004-emuch@163.com
2Â¥2008-10-19 18:35:28
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

xuwei0909

ÖÁ×ðľ³æ (ÖøÃûдÊÖ)

¶þÂ¥µÄ·½·¨ºÃÏ󲻺ÃÓÃ.¸÷λ,ÓкõĽâ¾ö·½·¨Âð?
3Â¥2008-10-20 20:10:14
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xi2004

ÖÁ×ðľ³æ (Ö°Òµ×÷¼Ò)

½âÊÍÔÚÕâÀï.

PLAT731 Type_1
Test for consistency of Bond su's and Coordinate su's in CIF A large ratio of the reported and calculated bond s.u.'s is found. The use of a DFIX instruction might cause such a warning since calculated s.u.'s are based on reported variances only.
Note_1: su's on the unitcell dimensions are taken into account in the calculation of expected su's. This may result in large differences between expected and reported su's when this contribution is not included in the reported su's, in particular for inaccurate unitcells.

Note_2: Another source for the discrepancy between calculated and reported su's can be that the validation software has access only to the variances of the refined parameters as opposed to the full co-variance matrix used by e.g. SHELXL for the calculation of derived parameters with associated su's. Constrained/restrained refinement may cause largei co-variances.

Äã˵µÄ¿ÉÄÜÊÇ DFIX 0.85 0.02  ²»ÐаÉ?  »òÐí¿ÉÒÔÔÙµ÷µ÷ 0.02 Õâ¸öÊýÖµ
È¥µô DFIX ¸Ä³É AFIX 3  ÊÔ¹ýÂð?
»¹ÓÐÄãµÄµ¥°ûÆ«²î¶ÔÂð?
xi2004-emuch@163.com
4Â¥2008-10-20 21:28:58
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