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http://www.ch.ic.ac.uk/robb/www_ ... enzene_handout.html

Õâ¸öÍøÒ³Õ¹Ê¾ÁËÒ»¸öʹÓà CASSCF ¼ÆËã The Photochemical Isomerisation of Benzene to Benzvalene

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The CASSCF computation that we shall run will include 6 electrons in the 6 p¹ molecular orbitals. From the geometry used previously it can be seen that the p¹ M.O.¡¯s are formed from pz atomic orbitals i.e. benzene is in the xy plane so we need the pz A.O.¡¯.

.......From the RHF calculation examination of the M.O.¡¯s gives the p¹ orbitals as 17,20,21,22,23,24. Only orbital 17 is not included in the active space. We need to swap orbitals 17 and 19 to get the correct active space.

ÇëÎÊÉÏÃæËùÌáµ½µÄ pz A.O.' ÊÇÈçºÎÓë orbital 17 ¹ÒÆð¹³À´µÄ£¬ÎÒ¿´ÁËÊä³öÎļþ£¬Ã»Óз¢ÏÖʲôÏßË÷¡£

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snoopyzhao

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snoopyzhao(½ð±Ò+2): 2010-04-29 19:44
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2Â¥2010-04-29 19:42:33
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CODE:
Orbital energies and kinetic energies (alpha):
                           1         2
       1  (B1U)--O     -9.83831  15.46284
       2  (E2G)--O     -9.83763  15.49378
       3  (E2G)--O     -9.83763  15.49378
       4  (E1U)--O     -9.83641  15.55037
       5  (E1U)--O     -9.83641  15.55037
       6  (A1G)--O     -9.83559  15.58438
       7  (A1G)--O     -0.96029   1.44211
       8  (E1U)--O     -0.84707   1.64767
       9  (E1U)--O     -0.84707   1.64767
      10  (E2G)--O     -0.70830   1.47031
      11  (E2G)--O     -0.70830   1.47031
      12  (A1G)--O     -0.62921   0.92924
      13  (B2U)--O     -0.58981   1.32033
      14  (B1U)--O     -0.54072   1.38690
      15  (E1U)--O     -0.53281   1.15964
      16  (E1U)--O     -0.53281   1.15964
      17  (A2U)--O     -0.48075   1.07726
      18  (E2G)--O     -0.45633   1.34098
      19  (E2G)--O     -0.45633   1.34098
      20  (E1G)--O     -0.37341   1.32268
      21  (E1G)--O     -0.37341   1.32268
      22  (E2U)--V     -0.14930   1.83523
      23  (E2U)--V     -0.14930   1.83523
      24  (B2G)--V      0.00198   2.18852
      25  (A1G)--V      0.14711   1.94496
      26  (E1U)--V      0.17064   2.16276
      27  (E1U)--V      0.17064   2.16276
      28  (E2G)--V      0.22790   3.53361
      29  (E2G)--V      0.22790   3.53361
      30  (B1U)--V      0.25479   3.20268
      31  (E1U)--V      0.33841   3.13904
      32  (E1U)--V      0.33841   3.13904
      33  (E2G)--V      0.34080   2.50683
      34  (E2G)--V      0.34080   2.50683
      35  (A2G)--V      0.46553   3.41800
      36  (B1U)--V      0.53330   3.57506

4Â¥2010-04-30 15:00:06
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lihb734

Ìú¸Ëľ³æ (Ö°Òµ×÷¼Ò)

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zhou2009(½ð±Ò+1): 2010-04-30 15:17
snoopyzhao(½ð±Ò+2):лл£¬ËüÓëÔ­×ӵĹìµÀ»òÕß·Ö×ӵĹìµÀÓйØÏµÂ𣿠2010-04-30 15:25
snoopyzhao(½ð±Ò+5):ÔٴθÐлÄãÍÆ¼öµÄÊ飬лл£¡ 2010-04-30 21:16
ÒýÓûØÌû:
Originally posted by snoopyzhao at 2010-04-30 15:00:06:
»òÕßË­ÄܸæËßÎÒÏÂÃæÕâЩÊä³öÖÐÀ¨ºÅÄÚµÄÊÇʲô¶«Î÷£¨ËƺõÊǹìµÀµÄ¶Ô³ÆÐÔ£©£¬´ÓÄÄÀïÄܹ»ÕÒµ½ËüÃǵÄÏêϸ½âÊÍ£¿·Ç³£¸Ðл£¡

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