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

using model chemistry: MP2/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP2/6-31G
 hartrees
Energy at 0K-263.126885
Energy at 298.15K-263.132689
HF Energy-262.555690
Nuclear repulsion energy204.913669
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 MP2/6-31G
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 3252 3111 11.02      
2 A1 3231 3092 18.33      
3 A1 3205 3066 0.23      
4 A1 1555 1488 3.06      
5 A1 1405 1344 51.25      
6 A1 1148 1098 8.09      
7 A1 1081 1035 0.05      
8 A1 967 925 0.73      
9 A1 690 660 4.69      
10 A2 955 913 0.00      
11 A2 405 388 0.00      
12 B1 964 923 0.00      
13 B1 917 877 1.73      
14 B1 793 759 14.65      
15 B1 720 689 35.44      
16 B1 353 338 4.77      
17 B2 3216 3077 21.77      
18 B2 1568 1500 34.51      
19 B2 1484 1420 10.75      
20 B2 1411 1350 0.38      
21 B2 1246 1192 3.85      
22 B2 1184 1133 0.17      
23 B2 1070 1023 3.65      
24 B2 636 609 10.89      

Unscaled Zero Point Vibrational Energy (zpe) 16727.6 cm-1
Scaled (by 0.9568) Zero Point Vibrational Energy (zpe) 16005.0 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 MP2/6-31G
ABC
0.20107 0.19556 0.09914

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.375
C2 0.000 0.000 -1.346
C3 0.000 1.205 0.644
C4 0.000 -1.205 0.644
N5 0.000 1.222 -0.728
N6 0.000 -1.222 -0.728
H7 0.000 0.000 2.464
H8 0.000 0.000 -2.432
H9 0.000 2.177 1.134
H10 0.000 -2.177 1.134

Atom - Atom Distances (Å)
  C1 C2 C3 C4 N5 N6 H7 H8 H9 H10
C12.72111.40941.40942.43202.43201.08913.80692.19042.1904
C22.72112.32672.32671.36911.36913.81021.08583.30043.3004
C31.40942.32672.41021.37222.78772.18283.30371.08873.4176
C41.40942.32672.41022.78771.37222.18283.30373.41761.0887
N52.43201.36911.37222.78772.44323.41782.09662.09323.8755
N62.43201.36912.78771.37222.44323.41782.09663.87552.0932
H71.08913.81022.18282.18283.41783.41784.89602.55122.5512
H83.80691.08583.30373.30372.09662.09664.89604.17834.1783
H92.19043.30041.08873.41762.09323.87552.55124.17834.3544
H102.19043.30043.41761.08873.87552.09322.55124.17834.3544

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 121.921 C1 C3 H9 122.006
C1 C4 N6 121.921 C1 C4 H10 122.006
C2 N5 C3 116.153 C2 N6 C4 116.153
C3 C1 C4 117.533 C3 C1 H7 121.234
C4 C1 H7 121.234 N5 C2 N6 126.319
N5 C2 H8 116.841 N5 C3 H9 116.072
N6 C2 H8 116.841 N6 C4 H10 116.072
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability