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

using model chemistry: MP2=FULL/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 MP2=FULL/6-311G*
 hartrees
Energy at 0K-263.709547
Energy at 298.15K-263.715409
HF Energy-262.740872
Nuclear repulsion energy208.488385
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 MP2=FULL/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 3249 3077 6.91      
2 A1 3224 3053 16.95      
3 A1 3204 3034 9.92      
4 A1 1621 1535 17.15      
5 A1 1443 1367 49.31      
6 A1 1163 1102 2.16      
7 A1 1081 1024 1.40      
8 A1 1016 962 4.01      
9 A1 690 653 4.55      
10 A2 969 918 0.00      
11 A2 405 383 0.00      
12 B1 982 930 0.02      
13 B1 957 907 0.19      
14 B1 815 771 12.58      
15 B1 743 704 41.55      
16 B1 347 329 3.23      
17 B2 3207 3038 19.23      
18 B2 1629 1542 49.47      
19 B2 1503 1423 7.25      
20 B2 1404 1329 0.15      
21 B2 1328 1258 0.77      
22 B2 1251 1184 5.90      
23 B2 1102 1044 5.60      
24 B2 627 594 11.32      

Unscaled Zero Point Vibrational Energy (zpe) 16978.7 cm-1
Scaled (by 0.9471) Zero Point Vibrational Energy (zpe) 16080.5 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 MP2=FULL/6-311G*
ABC
0.20943 0.20158 0.10271

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-311G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.354
C2 0.000 0.000 -1.309
C3 0.000 1.187 0.624
C4 0.000 -1.187 0.624
N5 0.000 1.202 -0.717
N6 0.000 -1.202 -0.717
H7 0.000 0.000 2.438
H8 0.000 0.000 -2.396
H9 0.000 2.156 1.117
H10 0.000 -2.156 1.117

Atom - Atom Distances (Å)
  C1 C2 C3 C4 N5 N6 H7 H8 H9 H10
C12.66241.39331.39332.39382.39381.08483.74932.16932.1693
C22.66242.26792.26791.33971.33973.74721.08693.24583.2458
C31.39332.26792.37371.34062.73902.16833.24441.08783.3794
C41.39332.26792.37372.73901.34062.16833.24443.37941.0878
N52.39381.33971.34062.73902.40363.37622.06482.06743.8262
N62.39381.33972.73901.34062.40363.37622.06483.82622.0674
H71.08483.74722.16832.16833.37623.37624.83412.52892.5289
H83.74931.08693.24443.24442.06482.06484.83414.12194.1219
H92.16933.24581.08783.37942.06743.82622.52894.12194.3127
H102.16933.24583.37941.08783.82622.06742.52894.12194.3127

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 122.226 C1 C3 H9 121.441
C1 C4 N6 122.226 C1 C4 H10 121.441
C2 N5 C3 115.591 C2 N6 C4 115.591
C3 C1 C4 116.825 C3 C1 H7 121.588
C4 C1 H7 121.588 N5 C2 N6 127.540
N5 C2 H8 116.230 N5 C3 H9 116.332
N6 C2 H8 116.230 N6 C4 H10 116.332
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability