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All results from a given calculation for C4H4N2 (1,3-Diazine)

using model chemistry: mPW1PW91/aug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at mPW1PW91/aug-cc-pVDZ
 hartrees
Energy at 0K-264.291180
Energy at 298.15K-264.297096
Nuclear repulsion energy209.102506
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at mPW1PW91/aug-cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3239 3104 7.68      
2 A1 3202 3068 13.61      
3 A1 3187 3054 14.02      
4 A1 1645 1577 51.26      
5 A1 1446 1386 52.33      
6 A1 1171 1122 0.77      
7 A1 1089 1044 1.07      
8 A1 1020 978 4.35      
9 A1 693 664 3.19      
10 A2 1008 966 0.00      
11 A2 407 390 0.00      
12 B1 1034 991 0.00      
13 B1 986 945 0.00      
14 B1 824 790 5.23      
15 B1 740 709 43.17      
16 B1 349 334 3.39      
17 B2 3190 3057 18.05      
18 B2 1645 1577 86.22      
19 B2 1499 1437 6.66      
20 B2 1386 1328 0.22      
21 B2 1293 1239 0.55      
22 B2 1239 1187 11.07      
23 B2 1100 1054 2.85      
24 B2 631 605 11.28      

Unscaled Zero Point Vibrational Energy (zpe) 17010.4 cm-1
Scaled (by 0.9583) Zero Point Vibrational Energy (zpe) 16301.1 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at mPW1PW91/aug-cc-pVDZ
ABC
0.21023 0.20335 0.10337

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/aug-cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.353
C2 0.000 0.000 -1.306
C3 0.000 1.183 0.620
C4 0.000 -1.183 0.620
N5 0.000 1.195 -0.714
N6 0.000 -1.195 -0.714
H7 0.000 0.000 2.441
H8 0.000 0.000 -2.397
H9 0.000 2.154 1.117
H10 0.000 -2.154 1.117

Atom - Atom Distances (Å)
  C1 C2 C3 C4 N5 N6 H7 H8 H9 H10
C12.65871.39101.39102.38742.38741.08823.74952.16732.1673
C22.65872.26022.26021.33341.33343.74691.09073.24273.2427
C31.39102.26022.36501.33432.72622.17103.24031.09183.3738
C41.39102.26022.36502.72621.33432.17103.24033.37381.0918
N52.38741.33341.33432.72622.38983.37372.06372.06783.8175
N62.38741.33342.72621.33432.38983.37372.06373.81752.0678
H71.08823.74692.17102.17103.37373.37374.83762.52842.5284
H83.74951.09073.24033.24032.06372.06374.83764.12214.1221
H92.16733.24271.09183.37382.06783.81752.52844.12214.3089
H102.16733.24273.37381.09183.81752.06782.52844.12214.3089

picture of 1,3-Diazine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C3 N5 122.311 C1 C3 H9 121.121
C1 C4 N6 122.311 C1 C4 H10 121.121
C2 N5 C3 115.819 C2 N6 C4 115.819
C3 C1 C4 116.442 C3 C1 H7 121.779
C4 C1 H7 121.779 N5 C2 N6 127.299
N5 C2 H8 116.351 N5 C3 H9 116.568
N6 C2 H8 116.351 N6 C4 H10 116.568
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 1.151      
2 C 0.457      
3 C 0.325      
4 C 0.325      
5 N -0.391      
6 N -0.391      
7 H -0.467      
8 H -0.260      
9 H -0.375      
10 H -0.375      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 2.368 2.368
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -36.012 0.000 0.000
y 0.000 -37.078 0.000
z 0.000 0.000 -30.578
Traceless
 xyz
x -2.183 0.000 0.000
y 0.000 -3.783 0.000
z 0.000 0.000 5.966
Polar
3z2-r211.933
x2-y21.066
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.423 0.000 0.000
y 0.000 9.864 0.000
z 0.000 0.000 10.333


<r2> (average value of r2) Å2
<r2> 114.802
(<r2>)1/2 10.715