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

using model chemistry: B1B95/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B1B95/6-311G*
 hartrees
Energy at 0K-264.269800
Energy at 298.15K-264.275680
Nuclear repulsion energy209.858205
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 B1B95/6-311G*
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 3221 3087 12.63      
2 A1 3185 3053 24.11      
3 A1 3168 3036 16.22      
4 A1 1641 1573 49.67      
5 A1 1450 1390 57.58      
6 A1 1171 1122 1.05      
7 A1 1084 1039 1.05      
8 A1 1019 977 5.56      
9 A1 692 663 4.01      
10 A2 1002 960 0.00      
11 A2 404 387 0.00      
12 B1 1025 982 0.00      
13 B1 984 943 0.02      
14 B1 827 793 5.23      
15 B1 740 709 44.38      
16 B1 346 332 2.93      
17 B2 3171 3039 31.81      
18 B2 1642 1574 85.83      
19 B2 1509 1446 8.19      
20 B2 1398 1340 0.28      
21 B2 1280 1227 3.73      
22 B2 1238 1187 7.59      
23 B2 1103 1057 3.49      
24 B2 625 599 10.94      

Unscaled Zero Point Vibrational Energy (zpe) 16960.6 cm-1
Scaled (by 0.9586) Zero Point Vibrational Energy (zpe) 16258.4 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 B1B95/6-311G*
ABC
0.21188 0.20466 0.10410

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-311G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.348
C2 0.000 0.000 -1.300
C3 0.000 1.178 0.618
C4 0.000 -1.178 0.618
N5 0.000 1.192 -0.712
N6 0.000 -1.192 -0.712
H7 0.000 0.000 2.431
H8 0.000 0.000 -2.386
H9 0.000 2.146 1.110
H10 0.000 -2.146 1.110

Atom - Atom Distances (Å)
  C1 C2 C3 C4 N5 N6 H7 H8 H9 H10
C12.64831.38621.38622.38022.38021.08273.73422.15962.1596
C22.64832.25052.25051.32891.32893.73101.08603.22763.2276
C31.38622.25052.35601.32972.71732.16243.22631.08663.3608
C41.38622.25052.35602.71731.32972.16243.22633.36081.0866
N52.38021.32891.32972.71732.38353.36142.05482.05733.8033
N62.38021.32892.71731.32972.38353.36142.05483.80332.0573
H71.08273.73102.16242.16243.36143.36144.81692.52022.5202
H83.73421.08603.22633.22632.05482.05484.81694.10264.1026
H92.15963.22761.08663.36082.05733.80332.52024.10264.2930
H102.15963.22763.36081.08663.80332.05732.52024.10264.2930

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 122.401 C1 C3 H9 121.225
C1 C4 N6 122.401 C1 C4 H10 121.225
C2 N5 C3 115.667 C2 N6 C4 115.667
C3 C1 C4 116.382 C3 C1 H7 121.809
C4 C1 H7 121.809 N5 C2 N6 127.483
N5 C2 H8 116.258 N5 C3 H9 116.374
N6 C2 H8 116.258 N6 C4 H10 116.374
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.311      
2 C 0.024      
3 C -0.011      
4 C -0.011      
5 N -0.285      
6 N -0.285      
7 H 0.214      
8 H 0.220      
9 H 0.223      
10 H 0.223      


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 2.291 2.291
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -35.651 0.000 0.000
y 0.000 -36.486 0.000
z 0.000 0.000 -30.329
Traceless
 xyz
x -2.244 0.000 0.000
y 0.000 -3.496 0.000
z 0.000 0.000 5.740
Polar
3z2-r211.479
x2-y20.835
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.666 0.000 0.000
y 0.000 8.595 0.000
z 0.000 0.000 9.272


<r2> (average value of r2) Å2
<r2> 113.875
(<r2>)1/2 10.671