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

using model chemistry: B3LYP/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3LYP/6-31G
 hartrees
Energy at 0K-264.233747
Energy at 298.15K-264.239673
Nuclear repulsion energy207.154157
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 B3LYP/6-31G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3247 3124 6.08      
2 A1 3239 3116 26.43      
3 A1 3208 3086 3.62      
4 A1 1593 1533 19.59      
5 A1 1437 1382 66.56      
6 A1 1167 1122 5.02      
7 A1 1091 1050 0.28      
8 A1 993 955 2.15      
9 A1 700 674 4.54      
10 A2 1010 972 0.00      
11 A2 421 405 0.00      
12 B1 1039 999 0.00      
13 B1 994 956 0.01      
14 B1 834 802 6.45      
15 B1 756 727 40.37      
16 B1 364 350 4.63      
17 B2 3214 3092 24.98      
18 B2 1594 1534 58.31      
19 B2 1499 1442 10.20      
20 B2 1416 1362 0.57      
21 B2 1254 1206 8.47      
22 B2 1221 1174 0.00      
23 B2 1095 1054 3.64      
24 B2 642 617 11.00      

Unscaled Zero Point Vibrational Energy (zpe) 17012.9 cm-1
Scaled (by 0.962) Zero Point Vibrational Energy (zpe) 16366.4 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 B3LYP/6-31G
ABC
0.20520 0.20032 0.10137

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.363
C2 0.000 0.000 -1.332
C3 0.000 1.193 0.634
C4 0.000 -1.193 0.634
N5 0.000 1.204 -0.720
N6 0.000 -1.204 -0.720
H7 0.000 0.000 2.447
H8 0.000 0.000 -2.415
H9 0.000 2.161 1.124
H10 0.000 -2.161 1.124

Atom - Atom Distances (Å)
  C1 C2 C3 C4 N5 N6 H7 H8 H9 H10
C12.69581.39821.39822.40582.40581.08373.77842.17422.1742
C22.69582.30002.30001.35091.35093.77951.08253.27173.2717
C31.39822.30002.38581.35362.75252.17033.27401.08503.3895
C41.39822.30002.38582.75251.35362.17033.27403.38951.0850
N52.40581.35091.35362.75252.40773.38772.07942.07713.8367
N62.40581.35092.75251.35362.40773.38772.07943.83672.0771
H71.08373.77952.17032.17033.38773.38774.86202.53382.5338
H83.77841.08253.27403.27402.07942.07944.86204.14664.1466
H92.17423.27171.08503.38952.07713.83672.53384.14664.3219
H102.17423.27173.38951.08503.83672.07712.53384.14664.3219

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 121.907 C1 C3 H9 121.712
C1 C4 N6 121.907 C1 C4 H10 121.712
C2 N5 C3 116.518 C2 N6 C4 116.518
C3 C1 C4 117.114 C3 C1 H7 121.443
C4 C1 H7 121.443 N5 C2 N6 126.034
N5 C2 H8 116.983 N5 C3 H9 116.381
N6 C2 H8 116.983 N6 C4 H10 116.381
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.098      
2 C 0.096      
3 C 0.007      
4 C 0.007      
5 N -0.332      
6 N -0.332      
7 H 0.153      
8 H 0.171      
9 H 0.163      
10 H 0.163      


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 2.613 2.613
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.777 0.000 0.000
y 0.000 8.311 0.000
z 0.000 0.000 9.065


<r2> (average value of r2) Å2
<r2> 116.603
(<r2>)1/2 10.798