24小时热门版块排行榜    

查看: 361  |  回复: 2
当前主题已经存档。

penguin2788

金虫 (小有名气)

[交流] 有CIF和list文件如何看是如何加氢,s.u.s是什么?

各位虫友们你们好,我是新手,前不久找人给解了一个晶体,投ACTA  C后,编辑来信The exptl_refinement text does not agree with reality. The authors should
supply a correct text. The N-H and water H-atoms are riding, not refined.
The applied restraints are inactive because of the riding constraint. The
definition of U for N-H is not mentioned (1.2), the U for CH is wrong (1.2).
If indeed the NH and OH were found in difference maps and refined with
restraints, this is at least not what was done in the final cycles, so full and
correct details are required. The 6 restraints should be removed from the
CIF (incl. D flags in the coordinates) and the crystal data.
我的这个化合物有NH2,H2O和CH2,我不知道是如何加氢的,当时自己描述为The H atoms bonded to atoms N1 and N2 were located in a
difference map and refined freely. Water H atoms were located in a
difference Fourier map and their positions were refined with
geometric restraints of O—H = 0.85 (1) A ˚ , with Uiso(H) = 1.5Ueq(O).
Other H atoms were placed in calculated positions, with C—H =
0.97 A ˚ , and refined as riding, with Uiso(H) = 1.5Ueq(C).
。请问各位虫友,我现在有当初请人解的CIF文件和list,res等文件如何看出是如何加氢的? Uiso(H) = 1.5Ueq(O)之类的又去哪里看?
另外审稿人还问到:Table 3: "experimental error" implies some indication of s.u.s
should be given in Table 3, otherwise we do not have any idea if the values
are indeed inside or outside the error range, but the table does not have
s.u.s. Can s.u.s be included?
不知道s.u.s是什么?知道的虫友帮助一下。

[ Last edited by penguin2788 on 2009-9-17 at 19:50 ]
回复此楼
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

monoclinic

木虫 (小有名气)

★ ★ ★ ★ ★ ★
penguin2788(金币+1,VIP+0):非常感谢您的帮助 9-17 19:48
eeqeeq0002(金币+1,VIP+0):谢谢参与 9-17 19:53
penguin2788(金币+4,VIP+0):以前的帖子接着给你金币 11-12 13:27
有CIF就可以了。

氢原子通常是理论加氢和差值加氢。
理论加氢时程序默认键长值,常规的如:sp1--0.98, sp2--0.97, sp3--0.96, N-H 0.86, NH20.90, -O-H 0.85,  OH2 0.82等等。
看看CIF中氢的键长是不是这样的固定值,如果是则是理论加氢,如果不是
(比如 O--H  0.8225 )就是差值加氢。

在CIF的原子列表里, 元素种类后面的第四项是原子的温度影子U,如:
O5 O 0.16193(14) 0.0846(2) 0.42483(6) 0.0589(4) Uani 1 1 d . . .
H51 H 0.0784 0.0284 0.4131 0.088 Uiso 1 1 d R . .
H52 H 0.1958 0.1663 0.4021 0.088 Uiso 1 1 d R . .
用H的U(例0.088)除以O的U(例0.0589),可以算出Uiso(H)的倍率是多少。

s.u.s是偏差

[ Last edited by monoclinic on 2009-9-17 at 20:10 ]
2楼2009-09-17 18:37:22
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

penguin2788

金虫 (小有名气)

顶起来大家帮助
3楼2009-09-17 19:50:31
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖
相关版块跳转 我要订阅楼主 penguin2788 的主题更新
普通表情 高级回复 (可上传附件)
最具人气热帖推荐 [查看全部] 作者 回/看 最后发表
[基金申请] 应该是93bebmhtak前后十一个字符比较关键 +17 Lanmanbaby 2026-08-09 29/1450 2026-08-12 00:24 by zhanghaozhu
[基金申请] 奇怪,两个人的filecode固定段从头到尾一模一样 +7 布布和一二 2026-08-10 9/450 2026-08-11 22:12 by 医学老男孩
[基金申请] 是这周出结果还是下周出结果? +3 yuleib84 2026-08-11 3/150 2026-08-11 21:53 by jnhyjjm
[基金申请] 小木虫上这么多卖论文的,真有人买论文么?感觉没必要啊 +8 Tide man 2026-08-10 9/450 2026-08-11 20:39 by beefly
[基金申请] 有时候,自然基金真的不能太认真 (我的申报经验) +3 majunge000 2026-08-11 4/200 2026-08-11 20:13 by lch2012
[基金申请] 帮忙看看fileCode +7 wwncly 2026-08-10 13/650 2026-08-11 19:36 by 冰心玉壶晴
[基金申请] 为什么网上很多人说本周 12号出结果 +6 瞬息宇宙 2026-08-10 7/350 2026-08-11 19:25 by Tide man
[基金申请] 什么时候出结果,有咨询渠道??? +3 Tide man 2026-08-11 3/150 2026-08-11 17:54 by kudofaye
[基金申请] 听说今天filecode变了 +26 布布和一二 2026-08-06 49/2450 2026-08-11 13:18 by WH3796
[基金申请] FileCode能看出啥? +7 要乐观耀哥 2026-08-10 17/850 2026-08-11 10:50 by 要乐观耀哥
[基金申请] filecode +9 documentary 2026-08-10 9/450 2026-08-11 10:08 by wk7465
[基金申请] 国自然结果 +4 Vierhys 2026-08-10 8/400 2026-08-10 15:06 by Vierhys
[基金申请] 2026国自然放榜时间 +9 布布和一二 2026-08-08 9/450 2026-08-10 11:22 by xxxx2020
[基金申请] filecode与中标关系的预测 +5 布布和一二 2026-08-07 5/250 2026-08-09 16:15 by 袁向阳007
[基金申请] 关于filecode +4 布布和一二 2026-08-07 7/350 2026-08-07 22:55 by zhanghaozhu
[基金申请] 化学口download_prp&fileCode的固定段好像这几天一直没变,有变的大神么? +3 Tide man 2026-08-07 4/200 2026-08-07 22:39 by Tide man
[基金申请] filecode变化情况 +6 布布和一二 2026-08-07 22/1100 2026-08-07 14:45 by 且听虎啸
[基金申请] 大家散了吧,后缀研究没有意义,别浪费时间了,过好目前的每一天,不要焦虑 +5 Tide man 2026-08-06 7/350 2026-08-07 13:11 by 医学老男孩
[基金申请] filecode +14 等待解的谜 2026-08-06 19/950 2026-08-07 12:20 by wlwhappy
[基金申请] 求各位大神看下 100+6 hpkpkpkp 2026-08-05 33/1650 2026-08-06 14:49 by zhiyanjiang
信息提示
请填处理意见