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Îҵľ§ÌåËùÓÐÊý¾ÝÔÚÏÂÃæ https://good.gd/1284907.htm ÈçÌ⣬Çë¸ßÊÖÓÃPlatonËãÏÂÎҵľ§ÌåÊÇ·ñ´æÔÚC-H pi £¬¼´C(28)-H(28A)***pi (benzene ring)ÊÇ·ñ´æÔÚÄØ£¬²¢°Ñ½á¹ûÕ³ÌùÔÚ¹ýÀ´¿´Ï¡£ ÖÁÓÚÔõôËãÒÔÏÂÊÇÎÒËÑË÷µ½µÄÒ»¸öÀý×ӿɹ©²Î¿¼£º platon×Ô¶¯¼ÆËãһϣ¬¼´ÔÚplatonÖеã»÷¡°cacu all"»á³öÏÖÒ»¸ölisÎļþ£¬ÔÚÆäÖоͿÉÒÔÕÒµ½ÄãÒªµÄ¶«Î÷¡£Èç¹û³ÌÐòÈÏΪûÓÐÕâÖÖ×÷Óã¬ÄÇôÄã¿ÉÄÜÔÚlisÎļþÖоÍÕÒ²»µ½ÏÂÃæµÄ¶«Î÷£º ==================================================================================================================================== Analysis of Y-X...Cg(Pi-Ring) Interactions (X..Cg < 4.0 Ang. - Gamma < 30.0 Deg) ==================================================================================================================================== Y--X(I) Res(I) Cg(J) [ ARU(J)] X..Cg Transformed J-Plane P, Q, R, S X-Perp Gamma Y-X..Cg Y..Cg Y-X,Pi C(19) -Cl(1) [ 1] -> Cg(5) [ 2564.02] 3.626(5) 0.9324 0.3227-0.1629 10.9734 3.614 4.66 93.9(3) 4.118(10) 0.72 C(39) -Cl(2) [ 2] -> Cg(1) [ 4555.01] 3.623(5) 0.3308-0.9275 0.1743 4.7128 3.612 4.63 93.7(4) 4.126(10) 0.91 ------- ---------------------------------------------- Min or Max 3.623 3.612 4.63 93.90 4.118 0.91 [ 2564] = X,1-Y,-1/2+Z [ 4555] = 1/2+X,1/2-Y,1/2+Z The Cg(I) refer to the Ring Centre-of-Gravity numbers given in () in the Ring-Analysis above |
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drg1984(½ð±Ò+1): лл»ØÌû½»Á÷£¡ 2011-06-15 15:51:09
baiyuefei(½ð±Ò+49): 2011-06-15 15:56:51
baiyuefei(½ð±Ò+51): ·Ç³£¸Ðл 2011-06-15 19:01:00
drg1984(½ð±Ò+1): лл»ØÌû½»Á÷£¡ 2011-06-15 15:51:09
baiyuefei(½ð±Ò+49): 2011-06-15 15:56:51
baiyuefei(½ð±Ò+51): ·Ç³£¸Ðл 2011-06-15 19:01:00
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Analysis of X-H...Cg(Pi-Ring) Interactions (H..Cg < 3.0 Ang. - Gamma < 30.0 Deg) ==================================================================================================================================== X--H(I) Res(I) Cg(J) [ ARU(J)] H..Cg Transformed J-Plane P, Q, R, S H-Perp Gamma X-H..Cg X..Cg X-H,Pi C(14) -H(14) [ 1] -> Cg(3) [ 6545.01] 2.93 -0.9967-0.0403-0.0710 -9.3463 2.76 19.28 174 3.854(7) 77 C(28) -H(28A) [ 1] -> Cg(5) [ 1555.01] 2.79 -0.2327 0.1798 0.9558 2.2010 -2.77 5.99 152 3.673(6) 59 ---------- ---------------------------------------------- Min or Max 2.790 -2.770 5.99 174.00 3.673 77.00 [ 6545] = 1/2-X,-1/2+Y,1/2-Z [ 1555] = X,Y,Z |

2Â¥2011-06-15 15:07:32
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- רҵ: Åäλ»¯Ñ§
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drg1984(½ð±Ò+1): лл»ØÌû½»Á÷£¡ 2011-06-15 15:51:20
drg1984(½ð±Ò+1): лл»ØÌû½»Á÷£¡ 2011-06-15 15:51:20
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Äã¸øµÄÀý×ÓÊǼÆËãY-X...Cg(Pi-Ring)µÄ Analysis of Y-X...Cg(Pi-Ring) Interactions (X..Cg < 4.0 Ang. - Gamma < 30.0 Deg) ==================================================================================================================================== Y--X(I) Res(I) Cg(J) [ ARU(J)] X..Cg Transformed J-Plane P, Q, R, S X-Perp Gamma Y-X..Cg Y..Cg Y-X,Pi C(1) -Br(1) [ 1] -> Cg(5) [ 7566.01] 3.880(2) 0.2327-0.1798-0.9558 -13.0597 3.368 29.75 150.40(17) 5.593(5) 73.02 ---------- ---------------------------------------------- Min or Max 3.880 3.368 29.75 150.40 5.593 73.02 [ 7566] = 1/2-X,3/2-Y,1-Z |

3Â¥2011-06-15 15:09:09
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ÇëÎÊϸßÊÖ£¬Îҵľ§ÌåÊÇ·ñ´æÔÚC(28)-H(28A)***pi (benzene ring)×÷ÓÃÄØ£¿ ·Ç¾§Ìåרҵ²»ÊÇÌ«Ã÷°×Âé·³¸ßÊÖÁË£¬¼ü³¤Ò»°ãÔÚ¶àÉÙ·¶Î§ÄÚËãÊÇÓÐC-H***pi ×÷ÓÃÄØ£¿ÓоßÌå²Î¿¼ÎÄÏ×Âð£¿ÎÒÓÐÖØ½±¸øÄú£¬½ð±Ò²»ÊÇÎÊÌâ°¡ÔÙ¶à¼Ó½ð±Ò¸øÄú¿ÉÒÔÂð£¿Éó¸åÈËÈÃÎÒ¾Ù³öC-H***pi µÄ¼ü³¤·¶Î§ÊǶàÉÙ£¬¿É×Ô¼º²»»á°¡¡£Éó¸åÈ˸øµÄÐÅÏ¢ÈçÏ£º 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¡ consider using Natural Bonds Orbitals (NBO) [4] and/or Atoms in Molecule (AIM) [5] approaches. Author suggested that C-H¡ criteria for this type of bond. They might use the results of recent analysis of 1154 proteins from PDB bank [6] work to support their statement about this type of interaction. |
4Â¥2011-06-15 15:56:10













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. This interaction is commonly believed to be a weak one.