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

using model chemistry: BLYP/6-31G(2df,p)

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/6-31G(2df,p)
 hartrees
Energy at 0K-264.244950
Energy at 298.15K-264.250706
Nuclear repulsion energy207.325605
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/6-31G(2df,p)
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 3119 3102 14.61      
2 A1 3080 3063 20.32      
3 A1 3068 3051 15.22      
4 A1 1539 1531 28.83      
5 A1 1386 1378 53.68      
6 A1 1125 1119 4.59      
7 A1 1050 1044 1.14      
8 A1 968 962 3.83      
9 A1 672 668 3.31      
10 A2 970 965 0.00      
11 A2 390 388 0.00      
12 B1 986 981 0.02      
13 B1 949 944 0.07      
14 B1 804 800 1.57      
15 B1 724 720 27.56      
16 B1 329 327 2.91      
17 B2 3071 3054 30.22      
18 B2 1535 1527 69.11      
19 B2 1446 1438 5.93      
20 B2 1358 1351 0.28      
21 B2 1214 1208 7.31      
22 B2 1195 1188 2.17      
23 B2 1058 1052 2.77      
24 B2 614 610 11.70      

Unscaled Zero Point Vibrational Energy (zpe) 16325.3 cm-1
Scaled (by 0.9945) Zero Point Vibrational Energy (zpe) 16235.5 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/6-31G(2df,p)
ABC
0.20692 0.19954 0.10158

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/6-31G(2df,p)

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 -1.316
C3 0.000 1.191 0.627
C4 0.000 -1.191 0.627
N5 0.000 1.210 -0.721
N6 0.000 -1.210 -0.721
H7 0.000 0.000 2.454
H8 0.000 0.000 -2.410
H9 0.000 2.165 1.127
H10 0.000 -2.165 1.127

Atom - Atom Distances (Å)
  C1 C2 C3 C4 N5 N6 H7 H8 H9 H10
C12.67821.40021.40022.40972.40971.09093.77292.17802.1780
C22.67822.27842.27841.34761.34763.76911.09473.26403.2640
C31.40022.27842.38241.34822.75342.18103.26221.09503.3934
C41.40022.27842.38242.75341.34822.18103.26223.39341.0950
N52.40971.34761.34822.75342.41923.39772.07732.08083.8478
N62.40971.34762.75341.34822.41923.39772.07733.84782.0808
H71.09093.76912.18102.18103.39773.39774.86382.53932.5393
H83.77291.09473.26223.26222.07732.07734.86384.14734.1473
H92.17803.26401.09503.39342.08083.84782.53934.14734.3303
H102.17803.26403.39341.09503.84782.08082.53934.14734.3303

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 122.495 C1 C3 H9 121.099
C1 C4 N6 122.495 C1 C4 H10 121.099
C2 N5 C3 115.373 C2 N6 C4 115.373
C3 C1 C4 116.576 C3 C1 H7 121.712
C4 C1 H7 121.712 N5 C2 N6 127.687
N5 C2 H8 116.156 N5 C3 H9 116.406
N6 C2 H8 116.156 N6 C4 H10 116.406
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.090      
2 C 0.081      
3 C 0.030      
4 C 0.030      
5 N -0.219      
6 N -0.219      
7 H 0.087      
8 H 0.101      
9 H 0.099      
10 H 0.099      


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 2.146 2.146
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.893 0.000 0.000
y 0.000 -36.505 0.000
z 0.000 0.000 -30.727
Traceless
 xyz
x -1.277 0.000 0.000
y 0.000 -3.695 0.000
z 0.000 0.000 4.972
Polar
3z2-r29.943
x2-y21.612
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.668 0.000 0.000
y 0.000 8.865 0.000
z 0.000 0.000 9.622


<r2> (average value of r2) Å2
<r2> 116.043
(<r2>)1/2 10.772