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

using model chemistry: B3LYP/CEP-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3LYP/CEP-31G*
 hartrees
Energy at 0K-44.792588
Energy at 298.15K-44.798424
Nuclear repulsion energy104.621448
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 B3LYP/CEP-31G*
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 3203 3093 10.42      
2 A1 3184 3075 24.25      
3 A1 3158 3049 19.63      
4 A1 1607 1552 44.08      
5 A1 1422 1373 61.24      
6 A1 1150 1110 0.49      
7 A1 1067 1030 1.05      
8 A1 994 960 3.17      
9 A1 676 653 4.20      
10 A2 1001 967 0.00      
11 A2 403 389 0.00      
12 B1 1032 996 0.21      
13 B1 999 964 0.01      
14 B1 828 799 22.35      
15 B1 735 710 44.22      
16 B1 353 341 3.22      
17 B2 3161 3053 31.64      
18 B2 1615 1559 85.05      
19 B2 1483 1432 8.83      
20 B2 1381 1334 0.24      
21 B2 1264 1220 2.50      
22 B2 1222 1180 9.85      
23 B2 1080 1043 4.63      
24 B2 622 601 9.13      

Unscaled Zero Point Vibrational Energy (zpe) 16818.8 cm-1
Scaled (by 0.9657) Zero Point Vibrational Energy (zpe) 16241.9 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 B3LYP/CEP-31G*
ABC
0.20507 0.19733 0.10056

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.367
C2 0.000 0.000 -1.328
C3 0.000 1.201 0.616
C4 0.000 -1.201 0.616
N5 0.000 1.213 -0.735
N6 0.000 -1.213 -0.735
H7 0.000 0.000 2.460
H8 0.000 0.000 -2.424
H9 0.000 2.180 1.113
H10 0.000 -2.180 1.113

Atom - Atom Distances (Å)
  C1 C2 C3 C4 N5 N6 H7 H8 H9 H10
C12.69471.41631.41632.42662.42661.09273.79132.19452.1945
C22.69472.28522.28521.35061.35063.78741.09653.27223.2722
C31.41632.28522.40211.35092.76662.20013.26931.09733.4170
C41.41632.28522.40212.76661.35092.20013.26933.41701.0973
N52.42661.35061.35092.76662.42673.41682.08032.08473.8633
N62.42661.35062.76661.35092.42673.41682.08033.86332.0847
H71.09273.78742.20012.20013.41683.41684.88402.56232.5623
H83.79131.09653.26933.26932.08032.08034.88404.15474.1547
H92.19453.27221.09733.41702.08473.86332.56234.15474.3594
H102.19453.27223.41701.09733.86332.08472.56234.15474.3594

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 122.524 C1 C3 H9 121.102
C1 C4 N6 122.524 C1 C4 H10 121.102
C2 N5 C3 115.538 C2 N6 C4 115.538
C3 C1 C4 115.993 C3 C1 H7 122.004
C4 C1 H7 122.004 N5 C2 N6 127.883
N5 C2 H8 116.059 N5 C3 H9 116.374
N6 C2 H8 116.059 N6 C4 H10 116.374
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.103      
2 C -0.569      
3 C -0.611      
4 C -0.611      
5 N 0.292      
6 N 0.292      
7 H 0.327      
8 H 0.257      
9 H 0.261      
10 H 0.261      


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 2.510 2.510
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.863 0.000 0.000
y 0.000 8.755 0.000
z 0.000 0.000 9.197


<r2> (average value of r2) Å2
<r2> 94.459
(<r2>)1/2 9.719