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

using model chemistry: BLYP/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at BLYP/6-311G**
 hartrees
Energy at 0K-264.300441
Energy at 298.15K-264.306197
Nuclear repulsion energy207.247148
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 BLYP/6-311G**
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 3109 3097 16.28      
2 A1 3078 3066 21.98      
3 A1 3062 3050 13.70      
4 A1 1534 1528 28.49      
5 A1 1379 1374 57.58      
6 A1 1121 1116 2.75      
7 A1 1047 1043 1.36      
8 A1 969 965 3.74      
9 A1 676 673 3.49      
10 A2 961 957 0.00      
11 A2 388 387 0.00      
12 B1 983 979 0.01      
13 B1 946 943 0.00      
14 B1 796 793 4.63      
15 B1 720 718 39.02      
16 B1 328 326 3.00      
17 B2 3065 3053 30.09      
18 B2 1534 1528 69.74      
19 B2 1441 1435 5.16      
20 B2 1354 1348 0.27      
21 B2 1207 1202 11.50      
22 B2 1175 1171 0.75      
23 B2 1057 1053 4.13      
24 B2 617 615 10.58      

Unscaled Zero Point Vibrational Energy (zpe) 16273.2 cm-1
Scaled (by 0.9961) Zero Point Vibrational Energy (zpe) 16209.8 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 BLYP/6-311G**
ABC
0.20672 0.19939 0.10149

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/6-311G**

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 -1.317
C3 0.000 1.192 0.627
C4 0.000 -1.192 0.627
N5 0.000 1.210 -0.721
N6 0.000 -1.210 -0.721
H7 0.000 0.000 2.453
H8 0.000 0.000 -2.410
H9 0.000 2.166 1.126
H10 0.000 -2.166 1.126

Atom - Atom Distances (Å)
  C1 C2 C3 C4 N5 N6 H7 H8 H9 H10
C12.68041.40101.40102.41002.41001.09013.77342.17872.1787
C22.68042.28112.28111.34841.34843.77051.09303.26483.2648
C31.40102.28112.38461.34892.75462.18063.26331.09363.3948
C41.40102.28112.38462.75461.34892.18063.26333.39481.0936
N52.41001.34841.34892.75462.41913.39722.07742.08003.8477
N62.41001.34842.75461.34892.41913.39722.07743.84772.0800
H71.09013.77052.18062.18063.39723.39724.86352.54012.5401
H83.77341.09303.26333.26332.07742.07744.86354.14664.1466
H92.17873.26481.09363.39482.08003.84772.54014.14664.3314
H102.17873.26483.39481.09363.84772.08002.54014.14664.3314

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 122.409 C1 C3 H9 121.209
C1 C4 N6 122.409 C1 C4 H10 121.209
C2 N5 C3 115.495 C2 N6 C4 115.495
C3 C1 C4 116.649 C3 C1 H7 121.676
C4 C1 H7 121.676 N5 C2 N6 127.542
N5 C2 H8 116.229 N5 C3 H9 116.381
N6 C2 H8 116.229 N6 C4 H10 116.381
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.169      
2 C 0.093      
3 C 0.063      
4 C 0.063      
5 N -0.246      
6 N -0.246      
7 H 0.098      
8 H 0.117      
9 H 0.114      
10 H 0.114      


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 2.236 2.236
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -35.782 0.000 0.000
y 0.000 -37.188 0.000
z 0.000 0.000 -31.069
Traceless
 xyz
x -1.654 0.000 0.000
y 0.000 -3.763 0.000
z 0.000 0.000 5.417
Polar
3z2-r210.833
x2-y21.406
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.801 0.000 0.000
y 0.000 9.004 0.000
z 0.000 0.000 9.803


<r2> (average value of r2) Å2
<r2> 116.513
(<r2>)1/2 10.794