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倚门回首

金虫 (小有名气)


[交流] 【求助】配位水分子加氢

我的结构中有一个配位水分子,其氧上的氢一个是理论加的一个是Q峰找到的,得到的O-H键键长分别为:
O(4)-H(4B1)                   0.8400
O(4)-H(4B2)                   0.8852
  但是后面的Uiso这个值是什么意思啊?在哪里能够找到?
主编是这样说的:

In '_publ_section_exptl_refinement' please provide details of the refinement of the water protons (inlcudes O-H distance and Uiso)
多谢各位帮忙啊!
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倚门回首

金虫 (小有名气)


引用回帖:
Originally posted by 2009210721 at 2011-01-07 10:49:52:
_publ_section_exptl_refinement
;
Water H atoms bonded to O atoms were located in
difference Fourier maps and refined with O---H distance restraints of 0.83(2)
and U~iso~(H ...

你好啊!我重新解了一下结构,全部都是在Q峰找到的
O4    5   0.55046   0.43958   0.25740  11.00000   0.02147   0.02401 =
        0.02092  -0.00043   0.00828  -0.00217
H4B2  6   0.53210   0.39060   0.18030  11.00000   0.05000
H4B1  6   0.46420   0.48190   0.18370  11.00000   0.05000
这样找到的H用不用再固定一下
他们的键长
O4 -        Distance       Angles
Cu1       1.9911 (0.0040)
H4B2      0.8634 (0.0885)  104.88 (5.36)
H4B1      0.8686 (0.1035)  108.47 (6.43)  98.08 (7.69)
               O4 -          Cu1           H4B2         
应该算是相同吗?偏差要怎么样写呢?
谢谢了!
4楼2011-01-07 17:03:26
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2009210721

铜虫 (著名写手)



小木虫(金币+0.5):给个红包,谢谢回帖交流
倚门回首(金币+5): 2011-01-07 16:33:08
_publ_section_exptl_refinement
;
Water H atoms bonded to O atoms were located in
difference Fourier maps and refined with O---H distance restraints of 0.83(2)
and U~iso~(H) = 1.5U~eq~(O).
;
2楼2011-01-07 10:49:52
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倚门回首

金虫 (小有名气)


引用回帖:
Originally posted by 2009210721 at 2011-01-07 10:49:52:
_publ_section_exptl_refinement
;
Water H atoms bonded to O atoms were located in
difference Fourier maps and refined with O---H distance restraints of 0.83(2)
and U~iso~(H ...

谢谢你的回复,但是两个O-H键不一样长啊?可以这样写吗?
3楼2011-01-07 16:32:44
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