24小时热门版块排行榜    

查看: 2038  |  回复: 8
当前只显示满足指定条件的回帖,点击这里查看本话题的所有回帖

xiaohuiyi

铁虫 (小有名气)

[求助] SQUEEZE结果 为什么会有这么多电子?

做了一个ATG 初步计算 大概是10个水 2个DMF.晶体结构解出来之后溶剂分子定不了 squeez之后无A类错误 R为0.5 Z等于6.....可是这个电子数怎么解释。。。晕了。。。一直怀疑是不是晶体数据有误。。。请指教。。。谢谢


# SQUEEZE RESULTS (APPEND TO CIF)
# Note: Data are Listed for all Voids in the P1 Unit Cell
# i.e. Centre of Gravity, Solvent Accessible Volume,
# Recovered number of Electrons in the Void and
# Details about the Squeezed Material
loop_
  _platon_squeeze_void_nr
  _platon_squeeze_void_average_x
  _platon_squeeze_void_average_y
  _platon_squeeze_void_average_z
  _platon_squeeze_void_volume
  _platon_squeeze_void_count_electrons
  _platon_squeeze_void_content
   1 -0.080 -0.040 -0.001      4630      3904 ' '
_platon_squeeze_details
;
;
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

qiuw001

银虫 (小有名气)


【答案】应助回帖

引用回帖:
7楼: Originally posted by jcajcazhzh at 2012-09-20 08:51:54
R-3的Z值是3吧。
例如 J. Am. Chem. Soc. 2011, 133,10018–10021
Crystal data for1 : C 160H 112 Cl 24 N32 Zn12
, Mr = 4118.06; trigonal,R 3; a = b = 37.841(5) Å, c = 15.799(3) &Aring ...

data_CSD_CIF_IYOHIO
_audit_creation_date 2011-11-16
_audit_creation_method CSD-ConQuest-V1
_database_code_CSD IYOHIO
_database_code_depnum_ccdc_archive 'CCDC 809386'
_chemical_formula_sum 'C85.75 H61.75 Cl29.25 N16 Zn6'
_chemical_formula_moiety
;
(C80 H56 Cl12 N16 Zn6)n,5.75n(C1 H1 Cl3)
;
_journal_coden_Cambridge 4
_journal_volume 133
_journal_year 2011
_journal_page_first 10018
_journal_name_full 'J.Am.Chem.Soc. '
loop_
_publ_author_name
"J.Heine"
"J.S.auf der Gunne"
"S.Dehnen"
_chemical_name_systematic
;
catena-[tetrakis(\m~3~-2,4,6-tris(4-Pyridyl)pyridine)-dodecachloro-hexa-zinc(i
i) chloroform solvate]
;
_cell_volume  19592.301
_exptl_crystal_colour 'colorless'
_exptl_crystal_description 'block'
_diffrn_ambient_temperature 100
_refine_special_details
;
Disordered chloroform solvent molecules (determined by elemental analysis)
were not modelled and the disordered density was taken into account using the
SQUEEZE/PLATON procedure. The unit cell was found to contain three voids of
2718-2724 A$3!, each holding 734-735 electrons. One of the central pyridine
rings is disordered by three-fold symmetry. Of the two independent atoms, one
is modelled as a mixed occupancy C:N site with ratio 0.66666:0.33333.
;
#These two values have been output from a single CSD field.
_refine_ls_R_factor_gt 0.0811
_refine_ls_wR_factor_gt 0.0811
_symmetry_cell_setting rhombohedral
_symmetry_space_group_name_H-M 'R -3'
_symmetry_Int_Tables_number 148
loop_
_symmetry_equiv_pos_site_id
_symmetry_equiv_pos_as_xyz
1 x,y,z
2 -y,x-y,z
3 -x+y,-x,z
4 2/3+x,1/3+y,1/3+z
5 2/3-y,1/3+x-y,1/3+z
6 2/3-x+y,1/3-x,1/3+z
7 1/3+x,2/3+y,2/3+z
8 1/3-y,2/3+x-y,2/3+z
9 1/3-x+y,2/3-x,2/3+z
10 -x,-y,-z
11 y,-x+y,-z
12 x-y,x,-z
13 -2/3-x,-1/3-y,-1/3-z
14 -2/3+y,-1/3-x+y,-1/3-z
15 -2/3+x-y,-1/3+x,-1/3-z
16 -1/3-x,-2/3-y,-2/3-z
17 -1/3+y,-2/3-x+y,-2/3-z
18 -1/3+x-y,-2/3+x,-2/3-z
_cell_length_a 37.841(5)
_cell_length_b 37.841(5)
_cell_length_c 15.799(3)
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 120
_cell_formula_units_Z 6
loop_
J. Am. Chem. Soc. 2011, 133,10018–10021,这个晶体有18个对称元素。所以要除以18。
8楼2012-09-20 11:05:59
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖
查看全部 9 个回答

qiuw001

银虫 (小有名气)


【答案】应助回帖


感谢参与,应助指数 +1
linhua0402313: 金币+1, 恩,感谢回帖交流,欢迎常来晶体板块 2012-09-20 07:47:48
你的Z值恐怕有问题吧。给出你的空间群。看看到底有几重对称。你的东西孔径这么大。稳定么?哈哈。多嘴问一句。
2楼2012-09-19 22:56:52
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

xiaohuiyi

铁虫 (小有名气)

引用回帖:
2楼: Originally posted by qiuw001 at 2012-09-19 22:56:52
你的Z值恐怕有问题吧。给出你的空间群。看看到底有几重对称。你的东西孔径这么大。稳定么?哈哈。多嘴问一句。

R-3 Z值 也是解晶体的时候算出来的。。。或许我应该重新弄个z值算一下?。。。

貌似不是很稳定。。。
3楼2012-09-19 23:04:11
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

qiuw001

银虫 (小有名气)


【答案】应助回帖

引用回帖:
3楼: Originally posted by xiaohuiyi at 2012-09-19 23:04:11
R-3 Z值 也是解晶体的时候算出来的。。。或许我应该重新弄个z值算一下?。。。

貌似不是很稳定。。。...

R-3应该是18。你的电子是10*10+40*2=180,这样偏差还是比较大。
4楼2012-09-19 23:17:56
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖
最具人气热帖推荐 [查看全部] 作者 回/看 最后发表
[考研] 求调剂 +7 十三加油 2026-03-21 7/350 2026-03-23 23:48 by 热情沙漠
[考研] 085600材料与化工调剂 +7 A-哆啦Z梦 2026-03-23 12/600 2026-03-23 23:16 by 星空星月
[考研] 一志愿重庆大学085700资源与环境,总分308求调剂 +7 墨墨漠 2026-03-23 8/400 2026-03-23 20:36 by Creta
[考研] 一志愿陕师大生物学071000,298分,求调剂 +3 SYA! 2026-03-23 3/150 2026-03-23 19:09 by macy2011
[考研] 考研化学308分求调剂 +7 你好明天你好 2026-03-23 8/400 2026-03-23 18:39 by macy2011
[考研] 316求调剂 +7 梁茜雯 2026-03-19 7/350 2026-03-23 16:21 by lingjue
[考研] 306求调剂 +9 chuanzhu川烛 2026-03-18 9/450 2026-03-23 13:17 by luoyongfeng
[考研] 280分求调剂 一志愿085802 +4 PUMPT 2026-03-22 7/350 2026-03-22 22:13 by 星空星月
[考研] 305分求调剂(食品工程) +4 Sxy112 2026-03-21 6/300 2026-03-22 15:26 by 无懈可击111
[考研] 一志愿东华大学控制学硕320求调剂 +3 Grand777 2026-03-21 3/150 2026-03-21 19:23 by 简之-
[考研] 一志愿重庆大学085700资源与环境总分308求调剂 +7 墨墨漠 2026-03-20 7/350 2026-03-21 16:36 by barlinike
[考研] 085601调剂 358分 +3 zzzzggh 2026-03-20 4/200 2026-03-21 10:21 by luoyongfeng
[考研] 070300化学319求调剂 +7 锦鲤0909 2026-03-17 7/350 2026-03-21 03:46 by JourneyLucky
[考研] 求调剂一志愿南京航空航天大学289分 +3 @taotao 2026-03-19 3/150 2026-03-20 21:34 by JourneyLucky
[考研] 261求B区调剂,科研经历丰富 +3 牛奶很忙 2026-03-20 4/200 2026-03-20 19:34 by JourneyLucky
[考研] 招收调剂硕士 +4 lidianxing 2026-03-19 12/600 2026-03-20 12:25 by lidianxing
[考研] 材料,纺织,生物(0856、0710),化学招生啦 +3 Eember. 2026-03-17 9/450 2026-03-18 10:28 by Eember.
[考博] 26博士申请 +3 1042136743 2026-03-17 3/150 2026-03-17 23:30 by 轻松不少随
[硕博家园] 湖北工业大学 生命科学与健康学院-课题组招收2026级食品/生物方向硕士 +3 1喜春8 2026-03-17 5/250 2026-03-17 17:18 by ber川cool子
[考研] 考研调剂 +3 淇ya_~ 2026-03-17 5/250 2026-03-17 09:25 by Winj1e
信息提示
请填处理意见