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All results from a given calculation for C3H4N2 (2H-Imidazole)

using model chemistry: CCD/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 CCD/cc-pVTZ
 hartrees
Energy at 0K-225.683508
Energy at 298.15K-225.689573
HF Energy-224.805031
Nuclear repulsion energy167.042236
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 CCD/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 3272 3055 10.56      
2 A1 3113 2907 0.25      
3 A1 1748 1632 24.09      
4 A1 1454 1358 2.20      
5 A1 1424 1329 19.79      
6 A1 1272 1188 2.43      
7 A1 1053 983 1.00      
8 A1 952 888 14.61      
9 A2 1180 1102 0.00      
10 A2 942 880 0.00      
11 A2 552 516 0.00      
12 B1 3159 2950 0.06      
13 B1 1038 970 23.48      
14 B1 845 789 5.44      
15 B1 363 339 34.29      
16 B2 3257 3041 4.21      
17 B2 1811 1691 0.02      
18 B2 1437 1342 34.86      
19 B2 1274 1190 1.96      
20 B2 1101 1028 34.67      
21 B2 950 887 62.24      

Unscaled Zero Point Vibrational Energy (zpe) 16098.3 cm-1
Scaled (by 0.9337) Zero Point Vibrational Energy (zpe) 15031.0 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 CCD/cc-pVTZ
ABC
0.36269 0.30572 0.17130

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.201
N2 0.000 0.997 0.279
N3 0.000 -0.997 0.279
C4 0.000 0.727 -0.943
C5 0.000 -0.727 -0.943
H6 -0.893 0.000 1.825
H7 0.893 0.000 1.825
H8 0.000 1.468 -1.725
H9 0.000 -1.468 -1.725

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8 H9
C11.35821.35822.26402.26401.08851.08853.27423.2742
N21.35821.99401.25112.11312.04442.04442.05883.1771
N31.35821.99402.11311.25112.04442.04443.17712.0588
C42.26401.25112.11311.45432.99722.99721.07772.3308
C52.26402.11311.25111.45432.99722.99722.33081.0777
H61.08852.04442.04442.99722.99721.78503.94373.9437
H71.08852.04442.04442.99722.99721.78503.94373.9437
H83.27422.05883.17711.07772.33083.94373.94372.9367
H93.27423.17712.05882.33081.07773.94373.94372.9367

picture of 2H-Imidazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C4 120.321 C1 N3 C5 120.321
N2 C1 N3 94.450 N2 C1 H6 112.880
N2 C1 H7 112.880 N2 C4 C5 102.454
N2 C4 H8 124.097 N3 C1 H6 112.880
N3 C1 H7 112.880 N3 C5 C4 102.454
N3 C5 H9 124.097 C4 C5 H9 133.449
C5 C4 H8 133.449 H6 C1 H7 110.149
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability