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xi2004

ÖÁ×ðľ³æ (Ö°Òµ×÷¼Ò)


[×ÊÔ´] ¡¾·ÖÏí¡¿½ÌÄãÈçºÎÔÚCIFÎļþÖбí´ïÇâ¼ü

±¾À´Êǻشð4028...ͬѧµÄÎÊÌâµÄ. µ«ÄǸöÖ÷Ìâ²»ÖªµÀΪºÎ±»É¾³ýÁË.
¿´ÆäËûÈËÒ²ÀÏÔÚÎÊ, ¾ÍÔÚÕâÀï˵һ˵.


ÎÊÌâÒ»:
ÏòACta Cryst. C»òEͶ¸å, ÐèÒª²úÉúÇâ¼ü±í, ¸ÃÔõô°ìÄØ?

ÕýÈ·´ÎÐòÈçÏÂ:

1. ÏÈÔÚ.insÖмÓ

HTAB

(¼ÓÔÚUNITºóÃæºÍFVAR֮ǰµÄÈκεط½)

2. ´Ó.lstÖÐ ²é¿´¿ÉÄܵÄÇâ¼ü,

Ò»°ã»á¿´µ½ÈçÏÂ

Hydrogen bonds with  H..A < r(A) + 2.000 Angstroms  and   110 deg.

D-H           d(D-H)   d(H..A)    O25-H13        0.902    2.343   149.03    3.151    O21
O19-H3         0.864    2.168   154.00    2.969    O4 [ -x, -y, -z ]
O21-H6         0.857    1.949   144.74    2.695    O27 [ -x, -y, -z+1 ]

3. ÔÚ .insÖÐ, ¼ÓÒÔÏÂÐÐ

ACTA
BOND $H
HTAB
HTAB O25 O21
EQIV $1 -x, -y, -z
EQIV $2 -x, -y, 1-z
HTAB O19 O4_$1
HTAB O21 O27_$2

(¼ÓÔÚUNITºóÃæºÍFVAR֮ǰµÄÈκεط½)

4. ¾«ÐÞnÂÖµ½ÊÕÁ²

5. ÄÇô, ÔÚ.lstÖÐ

Äã»á¿´µ½

Specified hydrogen bonds (with esds except fixed and riding H)

  D-H          H...A        D...A        <(DHA)

  0.90         2.34         3.151(8)     149.0        O25-H13...O21
  0.86(2)      2.17(4)      2.969(8)     154(8)       O19-H3...O4_$1
  0.86(2)      1.95(6)      2.695(7)     145(8)       O21-H6...O27_$2

5. ¶øÔÚ .cifÖÐ,

Äã»á¿´µ½ÒÔÏÂÐÅÏ¢. ×¢ÒâһϠsymmtry codeµÄ¶ÔÓ¦¹ØÏµ.
±ÈÈç3556 ±íʾ -x, -y, 1-z


_symmetry_cell_setting            monoclinic
_symmetry_space_group_name_H-M    P2(1)/n

loop_
_symmetry_equiv_pos_as_xyz
'x, y, z'
'-x+1/2, y+1/2, -z+1/2'
'-x, -y, -z'
'x-1/2, -y-1/2, z-1/2'

(ÕâÊÇP21/n¿Õ¼äȺÏà¶ÔÓ¦µÄËĸösymmetry operations)

loop_
_geom_hbond_atom_site_label_D
_geom_hbond_atom_site_label_H
_geom_hbond_atom_site_label_A
_geom_hbond_distance_DH
_geom_hbond_distance_HA
_geom_hbond_distance_DA
_geom_hbond_angle_DHA
_geom_hbond_site_symmetry_A
O25 H13 O21  0.90 2.34 3.151(8) 149.0 .
O19 H3 O4  0.86(2) 2.17(4) 2.969(8) 154(8) 3
O21 H6 O27  0.86(2) 1.95(6) 2.695(7) 145(8) 3_556


ÎÊÌâ¶þ: ÈçºÎ²é¿´²»³£¼ûµÄÇâ¼ü?,
ÓñðµÄ³ÌÐòËã³öÀ´µÄÇâ¼ü, ÆäacceptorµÄsymmetry code¶Ô³ÆÂëÓëshelxËãµÄ²»Ò»ÖÂÔõô°ì?

ÏóC-H...OÕâÀàÇâ¼ü, ShelxºÃÏ󲻸ø¼ÆËã, ÖÁÉÙÊÇÎÒ²»ÖªµÀÈçºÎËã. ÄÇôÔõôËãÄØ?

·½·¨Ò»: ÓÃPlaton, »òÕßPWTÖеÄPlaton ÆäÖÐÓÐCalc H-bond»òCalc allµÄÃüÁî
·½·¨¶þ: ÓÃMaterial Studio¿ÉÒÔ¼ì²é, µ«Òª°ÑCÉèΪdonor

µ«ÊÇ, ¸ù¾ÝһЩ³æ×ӵı¨µÀ, PlatonËã³öÀ´µÄÇâ¼ü, Æä¶Ô³Æ²Ù×÷Âë»áºÍXPºÍshelx Ëã³öÀ´µÄ²»Ò»ÖÂ.
Õâ¸ö, ¾ÝÎҲ鿴, ºÃÏóÊÇPlaton¼ÆËãʱ, ÓÐʱ»á°ÑÄãµÄÎļþÖеÄÓÐЩԭ×Ó×ø±ê×ö¸öÆ½ÒÆ.(ÊDz»ÊÇÕâ¸öÔ­Òò, ÒªÇëÊìϤPlatonµÄÈË˵˵).
¶øÒª×¢ÒâµÄÊÇ, ÓÐʱºò, XPÖеÄsymmetry code (ÓÃSYMMÖ¸Áî)ºÍ×îÖÕCIFÖÐµÄ Ò²»áÓÐËù²»Í¬, ±ÈÈç P2(1)/n, ÔÚXPÖÐ, ¾Í°Ñ-x, -y, -zÅÅÔÚ2, ¶øÔÚcifÖÐÊÇÔÚ3.

ÎҵĿ´·¨, Èç¹ûÄãµÄ½á¹¹ÊÇÓÃShelx»òShextl½âµÄ, ¿ÉÒÔÓÃPlaton¼ÆËã·Ç³£¹æÇâ¼ü, µ«²»ÒªÏàÐÅplatonËù¸øµÄ¶Ô³Æ²Ù×÷Âë, ÒòΪplaton×ö¼ÆËãʱ¿ÉÄܰÑÓÐЩԭ×ÓµÄ×ø±êÆ½ÒÆÁË.
Õâʱºò, Òª»Ø¹ýÍ·À´ÓÃXPÀ´²é¶ÔÕýÈ·µÄ¶Ô³Æ²Ù×÷Âë.
±ÈÈçÎÒ¾ÙµÄÉÏÊöÀý×Ó, ÓÃPlatonËãµÄ, ÓиöÇâ¼üÊÇ
O(21) --H(6)   ..O(27)  [  2545.07]       0.86       1.95     2.6946        145

ÄÇÄãÓÃXP´ò¿ª.ins,
fmolºó,
arad 0.2 2 2 O21
envi o21

Äã¾Í»á·¢ÏÖÓëO21¾àÀëÊÇ2.6946¶ÔÓ¦µÄO27µÄsymmetry codeÊÇ2556,
symm Ò»ÏÂ, ·¢ÏÖ
2 ¶ÔÓ¦µÄÊÇ-x, -y, -z
ËùÒÔ, O27µÄ¶Ô³Æ²Ù×÷ÊÇ-x, -y, 1-z
¶øÒª×¢ÒâµÄÊÇ, ÔÚCIFÖÐ, -x, -y, -zÊÇÅÅÔÚµÚÈý¸öµÄ, ËùÒÔO27µÄsymmetry code ×îºóÔÚCIFÖÐӦΪ3556.


ËùÒÔ, ¹Ø¼üÊÇÒªÃ÷°×symmetry codeµÄº¬Òå.
È»ºóÒªÒÔCIFÖеÄΪ׼.



ÎÊÌâÈý: ¶Ô³Æ²Ù×÷µÄº¬Òå



¹ØÓڶԳƲÙ×÷ÂëµÄº¬Òå, ¾Ù¸öÀý×Ó:

±ÈÈç P21/n Õâ¸ö¿Õ¼äȺ,
ÔÚCIFÖÐÓÐ
_symmetry_cell_setting            monoclinic
_symmetry_space_group_name_H-M    P2(1)/n

loop_
_symmetry_equiv_pos_as_xyz
'x, y, z'
'-x+1/2, y+1/2, -z+1/2'
'-x, -y, -z'
'x-1/2, -y-1/2, z-1/2'

ÉÏÃæËĸö¾ÍÊÇP21/nÕâ¸ö¿Õ¼äȺ¶ÔÓ¦µÄ¶Ô³Æ²Ù×÷.


Èç¹ûÄãÓиöÇâ¼üÊÇ:

O21 H6 O27  0.86(2) 1.95(6) 2.695(7) 145(8) 3_556

¾Í±íÃ÷: O27µÄ×ø±êÊÇÔÚ -x, -y, 1-zµÄλÖÃ.


ÆäÖÐ3±íʾ¿Õ¼äȺP21/nµÄµÚÈý¸ö¶Ô³Æ²Ù×÷, ¼´'-x, -y, -z' ; Ò²¾ÍÊÇÔÚ_symmetry_equiv_pos_as_xyz ÖÐÅŵÚÈýµÄÄǸö²Ù×÷.
¶ø556±íʾÔÚa, b ,c·½ÏòÉÏµÄÆ½ÒÆ. 5²»Æ½ÒÆ. 6ÊÇÍùÕý·½ÏòÆ½ÒÆÒ»¸öµ¥°û, ¼´+1, 4ÊÇ-1.


×¢ÒâÒ»ÏÂ, ÔÚ.insÖÐ, ¶Ô³Æ²Ù×÷ÊýÄ¿¶ÔÓÐÐĵĿռäȺÀ´ËµÊǼõ°ëµÄ, ¶øÇÒx, y, zÕâ¸ö²Ù×÷Ò²²»»á³öÏÖ. ±ÈÈç
ÉÏÊöP21/n,  ÔÚ.insÖÐ, ¾ÍÖ»³öÏÖ 0.5-X, 0.5+Y, 0.5-Z

¾ßÌå¾ÙÀýÈçÏÂ:

TITL NONE in P2(1)/n  
CELL 0.71073   1.0000   1.0000   1.0000  90.000  90.000  90.000
ZERR    1.00   0.0002   0.0002   0.0002   0.000   0.030   0.000
LATT  1
SYMM 0.5-X, 0.5+Y, 0.5-Z

[ Last edited by xi2004 on 2009-7-31 at 09:15 ]
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