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

using model chemistry: MP3=FULL/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 MP3=FULL/cc-pVDZ
 hartrees
Energy at 0K-225.482598
Energy at 298.15K-225.488625
HF Energy-224.741219
Nuclear repulsion energy166.116325
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 MP3=FULL/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 3300 3103 9.02      
2 A1 3139 2952 0.28      
3 A1 1768 1662 18.82      
4 A1 1456 1369 0.12      
5 A1 1415 1330 19.61      
6 A1 1291 1214 3.28      
7 A1 1056 993 0.99      
8 A1 952 895 15.41      
9 A2 1167 1097 0.00      
10 A2 915 860 0.00      
11 A2 541 509 0.00      
12 B1 3194 3003 0.04      
13 B1 1027 966 22.95      
14 B1 834 784 5.56      
15 B1 350 329 33.32      
16 B2 3283 3087 5.69      
17 B2 1831 1722 0.05      
18 B2 1451 1364 40.79      
19 B2 1261 1186 1.59      
20 B2 1104 1038 26.25      
21 B2 948 891 67.34      

Unscaled Zero Point Vibrational Energy (zpe) 16140.9 cm-1
Scaled (by 0.9403) Zero Point Vibrational Energy (zpe) 15177.3 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 MP3=FULL/cc-pVDZ
ABC
0.36030 0.30133 0.16949

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.208
N2 0.000 0.997 0.282
N3 0.000 -0.997 0.282
C4 0.000 0.731 -0.950
C5 0.000 -0.731 -0.950
H6 -0.901 0.000 1.839
H7 0.901 0.000 1.839
H8 0.000 1.487 -1.736
H9 0.000 -1.487 -1.736

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8 H9
C11.36131.36132.27922.27921.09961.09963.29863.2986
N21.36131.99461.26042.12282.05712.05712.07633.2006
N31.36131.99462.12281.26042.05712.05713.20062.0763
C42.27921.26042.12281.46293.02123.02121.09012.3536
C52.27922.12281.26041.46293.02123.02122.35361.0901
H61.09962.05712.05713.02123.02121.80133.97553.9755
H71.09962.05712.05713.02123.02121.80133.97553.9755
H83.29862.07633.20061.09012.35363.97553.97552.9742
H93.29863.20062.07632.35361.09013.97553.97552.9742

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 120.718 C1 N3 C5 120.718
N2 C1 N3 94.210 N2 C1 H6 112.986
N2 C1 H7 112.986 N2 C4 C5 102.177
N2 C4 H8 123.939 N3 C1 H6 112.986
N3 C1 H7 112.986 N3 C5 C4 102.177
N3 C5 H9 123.939 C4 C5 H9 133.884
C5 C4 H8 133.884 H6 C1 H7 109.979
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability