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

using model chemistry: BLYP/STO-3G

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/STO-3G
 hartrees
Energy at 0K-260.853384
Energy at 298.15K-260.858613
Nuclear repulsion energy200.542584
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/STO-3G
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 3357 3106 4.70      
2 A1 3319 3071 0.02      
3 A1 3307 3060 0.85      
4 A1 1569 1452 0.06      
5 A1 1333 1233 31.95      
6 A1 1109 1026 10.82      
7 A1 1062 982 0.65      
8 A1 927 858 0.14      
9 A1 650 602 2.34      
10 A2 947 876 0.00      
11 A2 360 333 0.00      
12 B1 983 910 0.00      
13 B1 920 851 0.03      
14 B1 758 701 14.92      
15 B1 728 674 3.89      
16 B1 325 300 2.15      
17 B2 3322 3073 2.00      
18 B2 1555 1438 25.54      
19 B2 1479 1368 19.60      
20 B2 1374 1271 0.36      
21 B2 1212 1121 0.17      
22 B2 1077 996 0.09      
23 B2 1049 971 0.16      
24 B2 613 567 4.08      

Unscaled Zero Point Vibrational Energy (zpe) 16666.7 cm-1
Scaled (by 0.9252) Zero Point Vibrational Energy (zpe) 15420.0 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/STO-3G
ABC
0.19599 0.18418 0.09495

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/STO-3G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.389
C2 0.000 0.000 -1.340
C3 0.000 1.216 0.655
C4 0.000 -1.216 0.655
N5 0.000 1.286 -0.754
N6 0.000 -1.286 -0.754
H7 0.000 0.000 2.496
H8 0.000 0.000 -2.455
H9 0.000 2.197 1.179
H10 0.000 -2.197 1.179

Atom - Atom Distances (Å)
  C1 C2 C3 C4 N5 N6 H7 H8 H9 H10
C12.72931.42081.42082.49932.49931.10653.84382.20682.2068
C22.72932.33672.33671.41281.41283.83571.11463.34263.3426
C31.42082.33672.43291.41082.87152.20633.33921.11173.4533
C41.42082.33672.43292.87151.41082.20633.33923.45331.1117
N52.49931.41281.41082.87152.57123.49482.13182.13733.9830
N62.49931.41282.87151.41082.57123.49482.13183.98302.1373
H71.10653.83572.20632.20633.49483.49484.95032.56112.5611
H83.84381.11463.33923.33922.13182.13184.95034.24634.2463
H92.20683.34261.11173.45332.13733.98302.56114.24634.3937
H102.20683.34263.45331.11173.98302.13732.56114.24634.3937

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 123.920 C1 C3 H9 120.758
C1 C4 N6 123.920 C1 C4 H10 120.758
C2 N5 C3 111.695 C2 N6 C4 111.695
C3 C1 C4 117.777 C3 C1 H7 121.112
C4 C1 H7 121.112 N5 C2 N6 130.992
N5 C2 H8 114.504 N5 C3 H9 115.321
N6 C2 H8 114.504 N6 C4 H10 115.321
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.084      
2 C 0.074      
3 C 0.010      
4 C 0.010      
5 N -0.197      
6 N -0.197      
7 H 0.095      
8 H 0.098      
9 H 0.096      
10 H 0.096      


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 2.045 2.045
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.556 0.000 0.000
y 0.000 -35.130 0.000
z 0.000 0.000 -29.353
Traceless
 xyz
x -0.314 0.000 0.000
y 0.000 -4.176 0.000
z 0.000 0.000 4.490
Polar
3z2-r28.980
x2-y22.574
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.204 0.000 0.000
y 0.000 5.884 0.000
z 0.000 0.000 6.553


<r2> (average value of r2) Å2
<r2> 121.248
(<r2>)1/2 11.011