| ²é¿´: 1398 | »Ø¸´: 6 | ||
baiyuefei°æÖ÷ (ÎÄѧ̩¶·)
·çÑ©
|
[ÇóÖú]
Çë½ÌÇâ¼üÎÊÌ⣿½ð±Ò²»ÊÇÎÊÌâ¿ÉÔÙ¼Ó£¬°ï°ïæ°¡
|
|
2¸öÔÂǰͶÁ˸öJournal of Molecular Structure£¬½ñ·µ»ØÈôóÐÞ¡£Çâ¼ü´¦ÓÐЩÎÊÌâ¡£ÔÚÎÄÕÂÖÐÎÒдµÄÇâ¼ü±í£¨Platon¼ÆË㣩ÈçÏ£º D-H¡A d(D-H) d(H¡A) d(D¡A) <(DHA) C(22)-H(22)¡O(2)i 0.93 2.52 3.428(9) 165.9 C(11)-H(11)¡N(3) 0.98 2.38 2.968(5) 117.8 C(28)-H(28A)¡pi(benzene ring) 2.786 ÇëÎÊ1ÎÒÕâ¸ö¾§ÌåÖÐÊÇ·ñ´æÔÚµÄÕâÈý¸ö×÷ÓÃÁ¦ÄØ£¿Çë׼ȷ»Ø´ð¡£ÊDz»ÊDz»´æÔÚ°¡£¿ÎÒ×Ô¼º¶¼²»¸ÒÈ·¶¨¡£ÎÒ¸ÃÔõô»Ø´ðÉó¸åÈ˵ÄÎÊÌâ°¡¡£±¾È˷Ǿ§Ìåרҵ£¬Âé·³¸÷λÅóÓÑÁË£¬½ð±Ò²»¹»¿ÉÔÙ¼Ó£¬ÏÈлл´ó¼Ò ![]() ![]() £¨×îºóͳһ·¢·Å£©Éó¸åÈ˹ØÓÚÇâ¼üÌá³öµÄÎÊÌâÈçÏ£º £¨1£©Characterization of non-covalent interactions. Authors should also provide more arguments on why they think that CH¡N bond with almost 3 Å length is a strong one ("There is a strong intramolecular hydrogen bond, C(11)-H(11)¡N(3) forming a six-membered ring." . This interaction is commonly believed to be a weak one. This would be also interesting if authors can do some computational investigation to estimate the energy of this bond in order to classify its strength. To evaluate CH¡N and CH¡£¨2£©Amide bond C-N. "The corresponding distances of C(23)-N(2) at the optimized geometry in two molecules are 1.378 Å, 1.382 Å respectively which are also shorter than the normally experimental C-N single bond length". This sentence is misleading since C-N bond in non-aromatic amides is aprox. 1.325-1.346 Å [7] and it is shorter due to n? Îҵľ§ÌåËù˵ÓÐÊý¾ÝÔÚÏÂÃæµÄ¼´µÃÍøÅÌÀ https://good.gd/1284907.htm |
» ²ÂÄãϲ»¶
ÔÚMOFÖУ¬ÓÐûÓÐôÈ»ù²Î¼ÓÅäλµÄÇé¿ö
ÒѾÓÐ2È˻ظ´
ÕÐ2026ÄêÈëѧÉϺ£½»Í¨´óѧ²©Ê¿Éú£¬¼±£¡£¡£¡
ÒѾÓÐ1È˻ظ´
ÎÞ»ú»¯Ñ§ÂÛÎÄÈóÉ«/·ÒëÔõôÊÕ·Ñ?
ÒѾÓÐ222È˻ظ´
ÀíÂÛ¼ÆËãºÏ×÷
ÒѾÓÐ0È˻ظ´
Çó¸ßУºÏ×÷
ÒѾÓÐ1È˻ظ´
27¼¶ÎÞ»ú»¯Ñ§É격×Ô¼ö
ÒѾÓÐ2È˻ظ´
ChemdrawÃâ·ÑÈí¼þ
ÒѾÓÐ0È˻ظ´
µ¥¾§½á¹¹½âÎö£¬¸÷ÀàÒÉÄѾ§ÌåÊý¾Ý´¦ÀíºÍ´ðÒÉ
ÒѾÓÐ38È˻ظ´
Õâ¸öË®Ïà·´Ó¦ÓÐûÓд߻¯¼Á´Ù½ø·¢Éú
ÒѾÓÐ4È˻ظ´
Mn Me3TACN
ÒѾÓÐ5È˻ظ´
» ±¾Ö÷ÌâÏà¹Ø¼ÛÖµÌùÍÆ¼ö£¬¶ÔÄúͬÑùÓаïÖú:
Çë½Ì¸öÇâ¼üÉú³ÉÎÊÌâ
ÒѾÓÐ15È˻ظ´
¹ØÓÚÅäºÏÎï¹ÌÌåÓ«¹âÎÊÌ⣬´ó¼Ò°ï°ïæ°¡
ÒѾÓÐ9È˻ظ´
¡¾ÇóÖú¡¿¹ØÓÚ¾ÛºÏÎïµÄÇâ¼üÎÊÌâ
ÒѾÓÐ16È˻ظ´
¡¾ÇóÖú¡¿diamond»Çâ¼üµÄÎÊÌâ
ÒѾÓÐ6È˻ظ´
¡¾ÇóÖú¡¿¹ØÓÚÇâ¼üµÄÈô¸ÉÎÊÌâ
ÒѾÓÐ14È˻ظ´
¡¾ÇóÖú¡¿¼±¼±£º°ï°ïæ°¡£¡ÔõÑùÓÃPLATON¼ì²éÇâ¼üºÍ¼ÆËãpaipai¶Ñ»ý°¡£¿
ÒѾÓÐ9È˻ظ´
|
2Â¥2011-06-14 12:48:11
yinguojie
ͳæ (ÖøÃûдÊÖ)
- Ó¦Öú: 9 (Ó×¶ùÔ°)
- ½ð±Ò: 173.8
- É¢½ð: 164
- ºì»¨: 4
- Ìû×Ó: 1384
- ÔÚÏß: 226Сʱ
- ³æºÅ: 511100
- ×¢²á: 2008-02-25
- ÐÔ±ð: GG
- רҵ: Åäλ»¯Ñ§
¡¾´ð°¸¡¿Ó¦Öú»ØÌû
baiyuefei(½ð±Ò+20): 2011-06-21 12:00:50
|
Äã×öµÄÊÇÓлúÉϵĶ«Î÷°É ×îºÃÄܰÑCIF »òRESÎļþ´«ÉÏÀ´ ²ÅÈÝÒ׿´Çå³þ Éó¸åÈ˵Ĵó¸ÅÒâ˼ÎÒÀí½âΪ 1. C(11)-H(11)¡N(3) ¼üÌ«¶Ì£¬Ö»ÓÐ3A£¬Ä㿴Ͼ§Ìå½á¹¹ÊÇ·ñÓбðµÄ×÷ÓÃÁ¦µÄÍÆ¶¯»òÕ߸ÉÈÅ 2. C(23)-N(2)¼üÌ«¶Ì Ò²ÊÇÐèÒªÄã×ö³ö½âÊÍ ÒòΪ¾ßÌåµÄ½á¹¹¿´²»µ½ Ö»ÄÜ˵Õâô¶àÁË£¬Ò»°ãÀ´Ëµ Ô×Ó°ë¾¶»òÕßÔ×ÓÖ®¼äµÄ¾àÀ룬ÔÚ½â½á¹¹µÄʱºò¶¼ÓÐÒ»¶¨µÄ·¶Î§ Äã×îºÃÈ¥ÎÊϵ±Ê±½á¾§ÌåµÄÈË£¬¿´¿´ÊÇÔõô˵µÄ |

3Â¥2011-06-14 15:20:21
baiyuefei
°æÖ÷ (ÎÄѧ̩¶·)
·çÑ©
- Ó¦Öú: 4643 (¸±½ÌÊÚ)
- ¹ó±ö: 46.97
- ½ð±Ò: 659204
- É¢½ð: 11616
- ºì»¨: 995
- ɳ·¢: 81
- Ìû×Ó: 69600
- ÔÚÏß: 13498.6Сʱ
- ³æºÅ: 676696
- ×¢²á: 2008-12-18
- ÐÔ±ð: GG
- רҵ: ºÏ³ÉÒ©Îﻯѧ
- ¹ÜϽ: Óлú½»Á÷
4Â¥2011-06-14 15:38:08
huahua1216
ÖÁ×ðľ³æ (ÎÄ̳¾«Ó¢)
- CMEI: 1
- Ó¦Öú: 173 (¸ßÖÐÉú)
- ¹ó±ö: 1.712
- ½ð±Ò: 40605.7
- É¢½ð: 1124
- ºì»¨: 22
- ɳ·¢: 1
- Ìû×Ó: 15424
- ÔÚÏß: 449.5Сʱ
- ³æºÅ: 260203
- ×¢²á: 2006-06-17
- ÐÔ±ð: GG
- רҵ: ·ÅÉä·ÖÎö
5Â¥2011-06-14 17:40:19
baiyuefei
°æÖ÷ (ÎÄѧ̩¶·)
·çÑ©
- Ó¦Öú: 4643 (¸±½ÌÊÚ)
- ¹ó±ö: 46.97
- ½ð±Ò: 659204
- É¢½ð: 11616
- ºì»¨: 995
- ɳ·¢: 81
- Ìû×Ó: 69600
- ÔÚÏß: 13498.6Сʱ
- ³æºÅ: 676696
- ×¢²á: 2008-12-18
- ÐÔ±ð: GG
- רҵ: ºÏ³ÉÒ©Îﻯѧ
- ¹ÜϽ: Óлú½»Á÷
6Â¥2011-06-14 17:51:58
lijunjie84
°æÖ÷ (Ö°Òµ×÷¼Ò)
ÒþÕß
- CMEI: 2
- Ó¦Öú: 214 (´óѧÉú)
- ¹ó±ö: 1.742
- ½ð±Ò: 26911.5
- É¢½ð: 1041
- ºì»¨: 50
- ɳ·¢: 25
- Ìû×Ó: 3967
- ÔÚÏß: 5513.9Сʱ
- ³æºÅ: 723048
- ×¢²á: 2009-03-15
- ÐÔ±ð: GG
- רҵ: ÎÞ»úºÏ³ÉºÍÖÆ±¸»¯Ñ§
- ¹ÜϽ: ¾§Ìå
7Â¥2011-06-15 21:12:59










. This interaction is commonly believed to be a weak one. This would be also interesting if authors can do some computational investigation to estimate the energy of this bond in order to classify its strength. To evaluate CH¡N and CH¡
»Ø¸´´ËÂ¥
£¬ÄÇÎÒ¸ÃÔõôÐÞ¸ÄÄØ£¬°ÑÕâ¸öÇâ¼üÖ±½Óɾµô»¹ÊÇÎÒ¸Äд³ÉÊÇÈõÇâ¼üÄØ£¬ÒòΪÇâ¼ü½Ç²îµÄÌ«¶àÁËÄØ£¿