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

using model chemistry: B3PW91/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3PW91/cc-pVTZ
 hartrees
Energy at 0K-264.307409
Energy at 298.15K-264.313316
Nuclear repulsion energy209.812727
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 B3PW91/cc-pVTZ
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 3206 3083 8.30      
2 A1 3165 3043 14.77      
3 A1 3152 3031 15.49      
4 A1 1625 1563 46.54      
5 A1 1442 1387 57.45      
6 A1 1168 1123 1.50      
7 A1 1086 1044 1.26      
8 A1 1014 975 4.74      
9 A1 693 667 3.49      
10 A2 1008 969 0.00      
11 A2 405 389 0.00      
12 B1 1035 995 0.00      
13 B1 991 953 0.07      
14 B1 830 798 4.35      
15 B1 741 712 41.85      
16 B1 346 333 3.02      
17 B2 3155 3034 21.61      
18 B2 1624 1562 84.54      
19 B2 1499 1441 7.59      
20 B2 1391 1338 0.25      
21 B2 1269 1220 3.43      
22 B2 1231 1184 8.28      
23 B2 1098 1055 2.95      
24 B2 630 606 12.13      

Unscaled Zero Point Vibrational Energy (zpe) 16901.4 cm-1
Scaled (by 0.9616) Zero Point Vibrational Energy (zpe) 16252.3 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 B3PW91/cc-pVTZ
ABC
0.21158 0.20477 0.10406

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/cc-pVTZ

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 -1.303
C3 0.000 1.178 0.619
C4 0.000 -1.178 0.619
N5 0.000 1.191 -0.712
N6 0.000 -1.191 -0.712
H7 0.000 0.000 2.430
H8 0.000 0.000 -2.388
H9 0.000 2.145 1.114
H10 0.000 -2.145 1.114

Atom - Atom Distances (Å)
  C1 C2 C3 C4 N5 N6 H7 H8 H9 H10
C12.65051.38571.38572.37922.37921.08203.73632.15782.1578
C22.65052.25382.25381.32961.32963.73251.08583.23103.2310
C31.38572.25382.35661.33052.71732.16073.22971.08613.3600
C41.38572.25382.35662.71731.33052.16073.22973.36001.0861
N52.37921.32961.33052.71732.38223.35982.05672.05963.8029
N62.37921.32962.71731.33052.38223.35982.05673.80292.0596
H71.08203.73252.16072.16073.35983.35984.81832.51672.5167
H83.73631.08583.22973.22972.05672.05674.81834.10684.1068
H92.15783.23101.08613.36002.05963.80292.51674.10684.2901
H102.15783.23103.36001.08613.80292.05962.51674.10684.2901

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 122.303 C1 C3 H9 121.135
C1 C4 N6 122.303 C1 C4 H10 121.135
C2 N5 C3 115.835 C2 N6 C4 115.835
C3 C1 C4 116.495 C3 C1 H7 121.752
C4 C1 H7 121.752 N5 C2 N6 127.228
N5 C2 H8 116.386 N5 C3 H9 116.562
N6 C2 H8 116.386 N6 C4 H10 116.562
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.142      
2 C 0.062      
3 C -0.014      
4 C -0.014      
5 N -0.191      
6 N -0.191      
7 H 0.126      
8 H 0.112      
9 H 0.127      
10 H 0.127      


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 2.274 2.274
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 0.000 0.000 0.000
y 0.000 0.000 0.000
z 0.000 0.000 0.000


<r2> (average value of r2) Å2
<r2> 113.929
(<r2>)1/2 10.674