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

using model chemistry: MP3=FULL/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP3=FULL/6-31G
 hartrees
Energy at 0K-225.206941
Energy at 298.15K-225.212901
HF Energy-224.705113
Nuclear repulsion energy160.917383
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/6-31G
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' 3727 3727 64.30      
2 A' 3319 3319 2.41      
3 A' 3304 3304 3.18      
4 A' 3294 3294 1.68      
5 A' 1582 1582 19.76      
6 A' 1513 1513 13.59      
7 A' 1473 1473 26.48      
8 A' 1372 1372 10.48      
9 A' 1296 1296 2.72      
10 A' 1186 1186 0.66      
11 A' 1133 1133 9.30      
12 A' 1118 1118 19.51      
13 A' 1077 1077 31.19      
14 A' 962 962 2.77      
15 A' 931 931 7.45      
16 A" 811 811 16.48      
17 A" 776 776 38.31      
18 A" 695 695 25.70      
19 A" 668 668 9.34      
20 A" 637 637 70.94      
21 A" 592 592 109.74      

Unscaled Zero Point Vibrational Energy (zpe) 15732.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 15732.8 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/6-31G
ABC
0.31398 0.30639 0.15507

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/6-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 1.117 0.000
C2 -1.117 0.297 0.000
C3 1.138 0.295 0.000
N4 -0.754 -0.985 0.000
C5 0.655 -1.005 0.000
H6 -0.005 2.123 0.000
H7 -2.133 0.674 0.000
H8 2.145 0.693 0.000
H9 1.212 -1.933 0.000

Atom - Atom Distances (Å)
  N1 C2 C3 N4 C5 H6 H7 H8 H9
N11.38621.40392.23332.22121.00632.17832.18643.2820
C21.38622.25571.33242.19912.13891.08343.28623.2242
C31.40392.25572.28461.38762.15603.29301.08212.2297
N42.23331.33242.28461.40873.19762.15763.34912.1818
C52.22122.19911.38761.40873.19753.25462.25901.0819
H61.00632.13892.15603.19763.19752.57472.58224.2349
H72.17831.08343.29302.15763.25462.57474.27774.2405
H82.18643.28621.08213.34912.25902.58224.27772.7868
H93.28203.22422.22972.18181.08194.23494.24052.7868

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 110.449 N1 C2 H7 123.319
N1 C3 C5 105.439 N1 C3 H8 122.634
C2 N1 C3 107.886 C2 N1 H6 126.017
C2 N4 C5 106.658 C3 N1 H6 126.097
C3 C5 N4 109.569 C3 C5 H9 128.656
N4 C2 H7 126.232 N4 C5 H9 121.775
C5 C3 H8 131.928
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability