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All results from a given calculation for C3H4N2 (1H-Imidazole)

using model chemistry: QCISD/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at QCISD/6-311G**
 hartrees
Energy at 0K-225.650391
Energy at 298.15K-225.656335
HF Energy-224.867323
Nuclear repulsion energy162.931644
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 QCISD/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 A' 3719 3549 66.98      
2 A' 3303 3152 2.18      
3 A' 3275 3125 0.62      
4 A' 3273 3122 6.31      
5 A' 1588 1515 13.53      
6 A' 1537 1467 20.12      
7 A' 1477 1409 18.96      
8 A' 1387 1324 7.33      
9 A' 1298 1239 0.50      
10 A' 1169 1115 7.79      
11 A' 1163 1110 1.53      
12 A' 1110 1059 14.40      
13 A' 1089 1039 37.23      
14 A' 947 904 1.97      
15 A' 911 869 6.57      
16 A" 857 817 1.19      
17 A" 839 800 34.98      
18 A" 729 695 38.02      
19 A" 677 646 6.09      
20 A" 636 607 14.21      
21 A" 472 451 94.65      

Unscaled Zero Point Vibrational Energy (zpe) 15728.4 cm-1
Scaled (by 0.9541) Zero Point Vibrational Energy (zpe) 15006.5 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 QCISD/6-311G**
ABC
0.32487 0.31182 0.15910

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 1.110 0.000
C2 -1.088 0.280 0.000
C3 1.122 0.300 0.000
N4 -0.749 -0.986 0.000
C5 0.637 -0.986 0.000
H6 -0.011 2.116 0.000
H7 -2.101 0.663 0.000
H8 2.124 0.702 0.000
H9 1.199 -1.910 0.000

Atom - Atom Distances (Å)
  N1 C2 C3 N4 C5 H6 H7 H8 H9
N11.36791.38362.22582.19021.00642.14802.16283.2489
C21.36792.20971.31152.13992.12791.08293.23953.1666
C31.38362.20972.26991.37382.14073.24321.08012.2108
N42.22581.31152.26991.38593.18882.13283.33232.1557
C52.19022.13991.37381.38593.16893.19622.24961.0815
H61.00642.12792.14073.18883.16892.54532.56094.2038
H72.14801.08293.24322.13283.19622.54534.22534.1845
H82.16283.23951.08013.33232.24962.56094.22532.7710
H93.24893.16662.21082.15571.08154.20384.18452.7710

picture of 1H-Imidazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C2 N4 112.330 N1 C2 H7 122.008
N1 C3 C5 105.178 N1 C3 H8 122.283
C2 N1 C3 106.851 C2 N1 H6 126.673
C2 N4 C5 104.963 C3 N1 H6 126.476
C3 C5 N4 110.678 C3 C5 H9 128.034
N4 C2 H7 125.662 N4 C5 H9 121.288
C5 C3 H8 132.539
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability