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

using model chemistry: B1B95/6-31G(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 B1B95/6-31G(2df,p)
 hartrees
Energy at 0K-264.233011
Energy at 298.15K-264.238894
Nuclear repulsion energy209.885635
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 B1B95/6-31G(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 3227 3090 7.60      
2 A1 3176 3042 16.77      
3 A1 3165 3032 17.14      
4 A1 1639 1570 48.89      
5 A1 1448 1387 52.55      
6 A1 1172 1122 2.18      
7 A1 1085 1039 0.90      
8 A1 1014 971 5.98      
9 A1 685 656 3.92      
10 A2 1013 970 0.00      
11 A2 403 386 0.00      
12 B1 1035 991 0.00      
13 B1 991 949 0.23      
14 B1 835 800 1.98      
15 B1 743 712 32.52      
16 B1 344 330 2.91      
17 B2 3168 3034 25.36      
18 B2 1637 1568 83.01      
19 B2 1502 1438 9.04      
20 B2 1390 1331 0.17      
21 B2 1285 1230 1.15      
22 B2 1242 1189 7.62      
23 B2 1099 1053 2.43      
24 B2 619 593 12.55      

Unscaled Zero Point Vibrational Energy (zpe) 16957.6 cm-1
Scaled (by 0.9577) Zero Point Vibrational Energy (zpe) 16240.3 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 B1B95/6-31G(2df,p)
ABC
0.21188 0.20479 0.10414

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31G(2df,p)

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 1.177 0.617
C4 0.000 -1.177 0.617
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 2.145 1.113
H10 0.000 -2.145 1.113

Atom - Atom Distances (Å)
  C1 C2 C3 C4 N5 N6 H7 H8 H9 H10
C12.64791.38581.38582.38042.38041.08243.73482.15772.1577
C22.64792.24962.24961.32871.32873.73031.08693.22813.2281
C31.38582.24962.35461.32972.71672.16203.22631.08713.3589
C41.38582.24962.35462.71671.32972.16203.22633.35891.0871
N52.38041.32871.32972.71672.38363.36132.05512.05903.8032
N62.38041.32872.71671.32972.38363.36132.05513.80322.0590
H71.08243.73032.16202.16203.36133.36134.81722.51732.5173
H83.73481.08693.22633.22632.05512.05514.81724.10444.1044
H92.15773.22811.08713.35892.05903.80322.51734.10444.2897
H102.15773.22813.35891.08713.80322.05902.51734.10444.2897

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 122.461 C1 C3 H9 121.042
C1 C4 N6 122.461 C1 C4 H10 121.042
C2 N5 C3 115.611 C2 N6 C4 115.611
C3 C1 C4 116.330 C3 C1 H7 121.835
C4 C1 H7 121.835 N5 C2 N6 127.527
N5 C2 H8 116.236 N5 C3 H9 116.497
N6 C2 H8 116.236 N6 C4 H10 116.497
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.159      
2 C 0.102      
3 C 0.037      
4 C 0.037      
5 N -0.270      
6 N -0.270      
7 H 0.127      
8 H 0.133      
9 H 0.131      
10 H 0.131      


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 2.191 2.191
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.835 0.000 0.000
y 0.000 -35.901 0.000
z 0.000 0.000 -30.029
Traceless
 xyz
x -1.870 0.000 0.000
y 0.000 -3.469 0.000
z 0.000 0.000 5.339
Polar
3z2-r210.678
x2-y21.067
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.660 0.000 0.000
y 0.000 8.567 0.000
z 0.000 0.000 9.232


<r2> (average value of r2) Å2
<r2> 113.495
(<r2>)1/2 10.653