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vrichard

银虫 (小有名气)

[求助] 100金币求解决A、B类错误

一个铜配合物结构,初步解析了,请帮忙解决A B类错误,R值大的问题,谢谢!。
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sunjing120

铁杆木虫 (小有名气)

老太太

【答案】应助回帖

你好!
     不能帮助你解决问题,而是请教:你的单晶是一杯芳烃的配合物,请问你是如何合成这类配合物的,多谢
sunjing
2楼2011-08-15 14:50:49
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ljmmarise

至尊木虫 (著名写手)

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★ ★
lichun1210(金币+2): 谢谢交流,欢迎常来晶体版! 2011-08-15 21:30:37
vrichard(金币+5): 2011-08-19 21:58:57
引用回帖:
2楼: Originally posted by sunjing120 at 2011-08-15 14:50:49:
你好!
     不能帮助你解决问题,而是请教:你的单晶是一杯芳烃的配合物,请问你是如何合成这类配合物的,多谢

The absolute value of parameter shift to su ratio > 0.20
Absolute value of the parameter shift to su ratio given 1.749
Additional refinement cycles may be required.
PLAT053_ALERT_1_A Minimum Crystal Dimension Missing (or Error) ... ?
PLAT054_ALERT_1_A Medium Crystal Dimension Missing (or Error) ... ?
PLAT055_ALERT_1_A Maximum Crystal Dimension Missing (or Error) ... ?
PLAT080_ALERT_2_A Maximum Shift/Error ............................ 1.75
PLAT122_ALERT_1_A No _symmetry_space_group_name_H-M Given ........ ?


The maximum difference density is > 0.1*ZMAX*1.00
_refine_diff_density_max given = 4.555
Test value = 2.900
RFACR01_ALERT_3_B The value of the weighted R factor is > 0.35
Weighted R factor given 0.400
PLAT052_ALERT_1_B Info on Absorption Correction Method Missing ... ?
PLAT084_ALERT_2_B High wR2 Value ................................. 0.40
PLAT093_ALERT_1_B No su’s on H-atoms, but refinement reported as . mixed
PLAT097_ALERT_2_B Large Reported Max. (Positive) Residual Density 4.55 eA-

Angle Calc 109.00, Rep 111.20 Dev... 2.20 Deg.
C37 -C38 -H38A 1.555 1.555 1.555 # 181

这些错误都可以消除的,其它的有些跟你的数据质量有关。
3楼2011-08-15 21:23:06
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hjh509

铁杆木虫 (职业作家)

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vrichard(金币+10): 2011-08-19 21:58:51
The absolute value of parameter shift to su ratio > 0.20
Absolute value of the parameter shift to su ratio given 1.749
Additional refinement cycles may be required.
增加运算轮数试试
PLAT053_ALERT_1_A Minimum Crystal Dimension Missing (or Error) ... ?
PLAT054_ALERT_1_A Medium Crystal Dimension Missing (or Error) ... ?
PLAT055_ALERT_1_A Maximum Crystal Dimension Missing (or Error) ... ?
三维没有给
PLAT122_ALERT_1_A No _symmetry_space_group_name_H-M Given ........ ?
空间群没有给
后面的问题貌似是你还有两个C原子的ueq值很高,可以尝试做无序处理!基本就都解决了吧!
111
4楼2011-08-15 21:34:01
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