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

using model chemistry: MP2=FULL/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 MP2=FULL/6-311G*
 hartrees
Energy at 0K-225.692964
Energy at 298.15K-225.698887
HF Energy-224.857120
Nuclear repulsion energy163.019526
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 MP2=FULL/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' 3701 3505 63.57      
2 A' 3312 3137 1.46      
3 A' 3290 3116 1.09      
4 A' 3285 3111 4.35      
5 A' 1553 1471 10.39      
6 A' 1521 1440 18.22      
7 A' 1486 1407 15.80      
8 A' 1383 1310 8.34      
9 A' 1285 1217 0.95      
10 A' 1198 1135 3.44      
11 A' 1167 1105 2.38      
12 A' 1116 1057 31.86      
13 A' 1095 1037 24.32      
14 A' 944 894 2.43      
15 A' 905 857 7.28      
16 A" 811 769 21.96      
17 A" 775 734 50.46      
18 A" 686 650 9.56      
19 A" 682 646 15.40      
20 A" 644 610 34.74      
21 A" 522 495 84.25      

Unscaled Zero Point Vibrational Energy (zpe) 15679.3 cm-1
Scaled (by 0.9471) Zero Point Vibrational Energy (zpe) 14849.9 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 MP2=FULL/6-311G*
ABC
0.32641 0.31114 0.15929

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 1.104 0.000
C2 -1.089 0.283 0.000
C3 1.118 0.308 0.000
N4 -0.740 -0.993 0.000
C5 0.634 -0.984 0.000
H6 -0.009 2.112 0.000
H7 -2.102 0.661 0.000
H8 2.119 0.713 0.000
H9 1.200 -1.904 0.000

Atom - Atom Distances (Å)
  N1 C2 C3 N4 C5 H6 H7 H8 H9
N11.36441.37332.22422.18261.00722.14822.15433.2394
C21.36442.20801.32282.13882.12391.08093.23673.1666
C31.37332.20802.26871.37992.12743.23981.07932.2136
N42.22421.32282.26871.37393.18952.14253.32942.1441
C52.18262.13881.37991.37393.16183.19232.25551.0808
H61.00722.12392.12743.18953.16182.54632.54604.1942
H72.14821.08093.23982.14253.19232.54634.22094.1819
H82.15433.23671.07933.32942.25552.54604.22092.7742
H93.23943.16662.21362.14411.08084.19424.18192.7742

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 111.719 N1 C2 H7 122.499
N1 C3 C5 104.891 N1 C3 H8 122.450
C2 N1 C3 107.516 C2 N1 H6 126.497
C2 N4 C5 104.935 C3 N1 H6 125.987
C3 C5 N4 110.940 C3 C5 H9 127.794
N4 C2 H7 125.782 N4 C5 H9 121.267
C5 C3 H8 132.659
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability