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wanghaiyang

铁杆木虫 (正式写手)

[交流] 【请教】请教一个B类错误! 已有5人参与

PLAT232 ALERT 2 B Hirshfeld Test Diff (M-X) Co.....O2 .. 10.73 su
这个单晶数据很好,有个B类错误应该怎么解决呢?我使用了simu命令,没有效果。谢谢大家!
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wanghaiyang

铁杆木虫 (正式写手)

试了试,还是不行啊!
我使用的命令是
delu 0.01 Co O2
5楼2010-06-23 16:14:07
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yunruirui

荣誉版主 (著名写手)

Alchemist

帮你顶下,等待解析高人出现
2楼2010-06-23 15:28:44
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crystalart

金虫 (小有名气)

wanghaiyang(金币+1):谢谢! 2010-06-23 16:09:46
楼上即为正解,xi2004老师说过的

try delu

PLAT232 Type_2 Hirshfeld Rigid-Bond Test (Metal-X) (Acta Cryst (1976),A32,239-244
--------------------------------------------------------------------------------

The components of the anisotropic displacement parameters along chemical
bonds are assumed to be equal in magnitude. Large differences supposedly
indicate contamination of these parameters with other (unresolved) effects
such as (substitutional) disorder, model or data errors and/or
over-refinement. Atomic sites assigned the wrong scattering type (e.g. Ag
versus Br) should generate 'problem signals' with this test. Data sets
corrected for absorption effects with DELREF techniques (e.g. DIFABS, SHELXA,
XABS2) often show large DELU values for bonds involving the heaviest atom.
Note: The original 'Hirshfeld-test' was defined in absolute terms (see
F.L.Hirshfeld, Acta Cryst. (1976). A32, 239-244). The current test is with
reference to the associated standard uncertainty.
在不断努力中艰难前行
4楼2010-06-23 15:56:14
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zhousm

木虫 (正式写手)

wanghaiyang(金币+1):谢谢啊!我已经解决这个问题了。 2010-06-23 18:12:37
delu 0.001 Co O2

try again
6楼2010-06-23 16:57:49
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