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

using model chemistry: CCSD=FULL/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 CCSD=FULL/aug-cc-pVDZ
 hartrees
Energy at 0K-225.535085
Energy at 298.15K-225.541078
HF Energy-224.754286
Nuclear repulsion energy165.676874
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 CCSD=FULL/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 3270 3270 10.69      
2 A1 3103 3103 0.42      
3 A1 1728 1728 24.81      
4 A1 1441 1441 1.20      
5 A1 1407 1407 20.66      
6 A1 1270 1270 2.54      
7 A1 1042 1042 0.38      
8 A1 936 936 13.09      
9 A2 1159 1159 0.00      
10 A2 895 895 0.00      
11 A2 531 531 0.00      
12 B1 3156 3156 0.07      
13 B1 1019 1019 23.32      
14 B1 821 821 6.20      
15 B1 344 344 33.89      
16 B2 3255 3255 3.20      
17 B2 1786 1786 0.02      
18 B2 1422 1422 37.69      
19 B2 1248 1248 4.23      
20 B2 1090 1090 31.40      
21 B2 933 933 56.41      

Unscaled Zero Point Vibrational Energy (zpe) 15926.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 15926.6 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 CCSD=FULL/aug-cc-pVDZ
ABC
0.35934 0.29897 0.16857

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.215
N2 0.000 0.998 0.283
N3 0.000 -0.998 0.283
C4 0.000 0.734 -0.954
C5 0.000 -0.734 -0.954
H6 -0.904 0.000 1.842
H7 0.904 0.000 1.842
H8 0.000 1.490 -1.739
H9 0.000 -1.490 -1.739

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8 H9
C11.36501.36502.28972.28971.10001.10003.30823.3082
N21.36501.99531.26532.12802.05952.05952.08123.2058
N31.36501.99532.12801.26532.05952.05953.20582.0812
C42.28971.26532.12801.46733.02873.02871.08982.3579
C52.28972.12801.26531.46733.02873.02872.35791.0898
H61.10002.05952.05953.02873.02871.80763.98233.9823
H71.10002.05952.05953.02873.02871.80763.98233.9823
H83.30822.08123.20581.08982.35793.98233.98232.9798
H93.30823.20582.08122.35791.08983.98233.98232.9798

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 120.994 C1 N3 C5 120.994
N2 C1 N3 93.924 N2 C1 H6 112.896
N2 C1 H7 112.896 N2 C4 C5 102.045
N2 C4 H8 124.013 N3 C1 H6 112.896
N3 C1 H7 112.896 N3 C5 C4 102.045
N3 C5 H9 124.013 C4 C5 H9 133.943
C5 C4 H8 133.943 H6 C1 H7 110.492
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability