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

using model chemistry: CCD/aug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at CCD/aug-cc-pVDZ
 hartrees
Energy at 0K-225.614350
Energy at 298.15K-225.620339
HF Energy-224.845733
Nuclear repulsion energy162.175234
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/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 A' 3707 3576 73.11      
2 A' 3310 3192 1.31      
3 A' 3285 3168 0.58      
4 A' 3281 3165 3.41      
5 A' 1581 1524 9.21      
6 A' 1528 1474 27.71      
7 A' 1478 1426 18.79      
8 A' 1385 1336 5.81      
9 A' 1286 1240 0.38      
10 A' 1168 1127 7.32      
11 A' 1154 1113 1.95      
12 A' 1107 1067 14.59      
13 A' 1082 1044 35.66      
14 A' 943 910 1.67      
15 A' 906 874 5.50      
16 A" 864 834 2.04      
17 A" 831 802 39.17      
18 A" 741 714 44.95      
19 A" 677 653 2.55      
20 A" 640 617 13.20      
21 A" 520 502 88.35      

Unscaled Zero Point Vibrational Energy (zpe) 15736.7 cm-1
Scaled (by 0.9645) Zero Point Vibrational Energy (zpe) 15178.0 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/aug-cc-pVDZ
ABC
0.32145 0.30938 0.15765

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 1.110 0.000
C2 -1.095 0.285 0.000
C3 1.126 0.304 0.000
N4 -0.749 -0.991 0.000
C5 0.640 -0.990 0.000
H6 -0.015 2.120 0.000
H7 -2.113 0.668 0.000
H8 2.135 0.708 0.000
H9 1.209 -1.918 0.000

Atom - Atom Distances (Å)
  N1 C2 C3 N4 C5 H6 H7 H8 H9
N11.37101.38502.23112.19611.00962.15902.17213.2607
C21.37102.22041.32212.15302.12921.08823.25693.1874
C31.38502.22042.27831.38222.14463.25931.08702.2230
N42.23111.32212.27831.38903.19662.14823.34712.1663
C52.19612.15301.38221.38903.17843.21422.26261.0881
H61.00962.12922.14463.19663.17842.55182.57124.2191
H72.15901.08823.25932.14823.21422.55184.24794.2101
H82.17213.25691.08703.34712.26262.57124.24792.7844
H93.26073.18742.22302.16631.08814.21914.21012.7844

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 111.861 N1 C2 H7 122.361
N1 C3 C5 105.056 N1 C3 H8 122.512
C2 N1 C3 107.351 C2 N1 H6 126.192
C2 N4 C5 105.125 C3 N1 H6 126.457
C3 C5 N4 110.606 C3 C5 H9 127.888
N4 C2 H7 125.778 N4 C5 H9 121.505
C5 C3 H8 132.432
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability