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

using model chemistry: B1B95/aug-cc-pVDZ

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/aug-cc-pVDZ
 hartrees
Energy at 0K-264.246927
Energy at 298.15K-264.252829
Nuclear repulsion energy 
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/aug-cc-pVDZ
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 3241 3105 7.47      
2 A1 3202 3067 14.33      
3 A1 3186 3052 14.31      
4 A1 1648 1578 53.40      
5 A1 1447 1386 50.97      
6 A1 1169 1120 0.73      
7 A1 1087 1041 0.84      
8 A1 1019 976 4.71      
9 A1 687 658 3.25      
10 A2 1008 966 0.00      
11 A2 404 387 0.00      
12 B1 1034 991 0.00      
13 B1 985 944 0.00      
14 B1 824 789 4.95      
15 B1 739 708 41.65      
16 B1 345 331 3.33      
17 B2 3189 3055 18.65      
18 B2 1650 1581 86.17      
19 B2 1499 1436 6.21      
20 B2 1384 1326 0.19      
21 B2 1293 1239 0.67      
22 B2 1238 1186 10.38      
23 B2 1098 1052 2.64      
24 B2 623 597 11.37      

Unscaled Zero Point Vibrational Energy (zpe) 17000.0 cm-1
Scaled (by 0.9579) Zero Point Vibrational Energy (zpe) 16284.3 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/aug-cc-pVDZ
ABC
0.21090 0.20403 0.10370

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/aug-cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.350
C2 0.000 0.000 -1.304
C3 0.000 1.180 0.619
C4 0.000 -1.180 0.619
N5 0.000 1.193 -0.713
N6 0.000 -1.193 -0.713
H7 0.000 0.000 2.437
H8 0.000 0.000 -2.393
H9 0.000 2.151 1.116
H10 0.000 -2.151 1.116

Atom - Atom Distances (Å)
  C1 C2 C3 C4 N5 N6 H7 H8 H9 H10
C12.65431.38861.38862.38352.38351.08683.74372.16382.1638
C22.65432.25642.25641.33121.33123.74101.08943.23793.2379
C31.38862.25642.36091.33232.72172.16763.23551.09053.3685
C41.38862.25642.36092.72171.33232.16763.23553.36851.0905
N52.38351.33121.33232.72172.38583.36852.06062.06503.8117
N62.38351.33122.72171.33232.38583.36852.06063.81172.0650
H71.08683.74102.16762.16763.36853.36854.83052.52442.5244
H83.74371.08943.23553.23552.06062.06064.83054.11634.1163
H92.16383.23791.09053.36852.06503.81172.52444.11634.3023
H102.16383.23793.36851.09053.81172.06502.52444.11634.3023

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 122.312 C1 C3 H9 121.110
C1 C4 N6 122.312 C1 C4 H10 121.110
C2 N5 C3 115.811 C2 N6 C4 115.811
C3 C1 C4 116.448 C3 C1 H7 121.776
C4 C1 H7 121.776 N5 C2 N6 127.306
N5 C2 H8 116.347 N5 C3 H9 116.578
N6 C2 H8 116.347 N6 C4 H10 116.578
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 1.172      
2 C 0.510      
3 C 0.380      
4 C 0.380      
5 N -0.343      
6 N -0.343      
7 H -0.538      
8 H -0.332      
9 H -0.443      
10 H -0.443      


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 2.346 2.346
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 5.382 0.000 0.000
y 0.000 9.841 0.000
z 0.000 0.000 10.322


<r2> (average value of r2) Å2
<r2> 114.492
(<r2>)1/2 10.700