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Wiberg bond index matrix in the NAO basis:                                      

    Atom    1       2       3       4       5       6       7
    ---- ------  ------  ------  ------  ------  ------  ------
  1.  C  0.0000  0.9964  0.9472  0.9394  0.9394  0.0020  0.0020
  2.  N  0.9964  0.0000  0.0208  0.0052  0.0052  0.8611  0.8611
  3.  H  0.9472  0.0208  0.0000  0.0004  0.0004  0.0002  0.0002
  4.  H  0.9394  0.0052  0.0004  0.0000  0.0009  0.0079  0.0005
  5.  H  0.9394  0.0052  0.0004  0.0009  0.0000  0.0005  0.0079
  6.  H  0.0020  0.8611  0.0002  0.0079  0.0005  0.0000  0.0003
  7.  H  0.0020  0.8611  0.0002  0.0005  0.0079  0.0003  0.0000


Wiberg bond index, Totals by atom:                                             

    Atom    1
    ---- ------
  1.  C  3.8265
  2.  N  2.7499
  3.  H  0.9691
  4.  H  0.9544
  5.  H  0.9544
  6.  H  0.8720
  7.  H  0.8720


This index is intrinsically a positive quantity, making no distinction between net bonding or antibonding character of the density matrix elements.
The next segment tabulates the "overlap-weighted NAO bond order," as shown below:
Atom-atom overlap-weighted NAO bond order:                                      

    Atom    1       2       3       4       5       6       7
    ---- ------  ------  ------  ------  ------  ------  ------
  1.  C  0.0000  0.7815  0.7614  0.7633  0.7633 -0.0103 -0.0103
  2.  N  0.7815  0.0000 -0.0225 -0.0097 -0.0097  0.6688  0.6688
  3.  H  0.7614 -0.0225  0.0000 -0.0039 -0.0039 -0.0019 -0.0019
  4.  H  0.7633 -0.0097 -0.0039  0.0000  0.0024  0.0038 -0.0032
  5.  H  0.7633 -0.0097 -0.0039  0.0024  0.0000 -0.0032  0.0038
  6.  H -0.0103  0.6688 -0.0019  0.0038 -0.0032  0.0000 -0.0069
  7.  H -0.0103  0.6688 -0.0019 -0.0032  0.0038 -0.0069  0.0000


Atom-atom overlap-weighted NAO bond order, Totals by atom:                     

    Atom    1
    ---- ------
  1.  C  3.0488
  2.  N  2.0772
  3.  H  0.7273
  4.  H  0.7527
  5.  H  0.7527
  6.  H  0.6503
  7.  H  0.6503
This index corresponds to a sum of off-diagonal NAO density matrix elements between atoms, each multiplied by the corresponding PNAO overlap integral.

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1C - 2N =0.9964

Atom    1           2         3         4           5         6         7
    ---- ------  ------  ------  ------  ------  ------  ------
  1.  C  0.0000  0.9964  0.9472  0.9394  0.9394  0.0020  0.0020
  2.  N  0.9964  0.0000  0.0208  0.0052  0.0052  0.8611  0.8611
  3.  H  0.9472  0.0208  0.0000  0.0004  0.0004  0.0002  0.0002
  4.  H  0.9394  0.0052  0.0004  0.0000  0.0009  0.0079  0.0005
  5.  H  0.9394  0.0052  0.0004  0.0009  0.0000  0.0005  0.0079
  6.  H  0.0020  0.8611  0.0002  0.0079  0.0005  0.0000  0.0003
  7.  H  0.0020  0.8611  0.0002  0.0005  0.0079  0.0003  0.0000

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[ Last edited by spkeey on 2008-9-22 at 22:08 ]
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Originally posted by lingchiyu at 2008-9-24 15:49:
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