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All results from a given calculation for C3H4N2 (4H-Imidazole)

using model chemistry: CID/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 CID/6-311G*
 hartrees
Energy at 0K-225.471268
Energy at 298.15K-225.477324
HF Energy-224.842371
Nuclear repulsion energy161.691313
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 CID/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' 3333 3096 14.61      
2 A' 3307 3073 10.65      
3 A' 3163 2938 3.73      
4 A' 1778 1652 49.63      
5 A' 1688 1568 17.20      
6 A' 1503 1397 16.21      
7 A' 1397 1298 26.45      
8 A' 1386 1288 14.99      
9 A' 1341 1246 4.36      
10 A' 1097 1019 63.68      
11 A' 1068 992 16.04      
12 A' 991 921 2.08      
13 A' 927 861 3.64      
14 A' 916 851 13.70      
15 A" 3205 2978 4.17      
16 A" 1235 1147 0.39      
17 A" 1070 995 16.22      
18 A" 1020 947 0.27      
19 A" 801 745 5.62      
20 A" 587 546 26.42      
21 A" 380 353 5.87      

Unscaled Zero Point Vibrational Energy (zpe) 16096.6 cm-1
Scaled (by 0.9291) Zero Point Vibrational Energy (zpe) 14955.3 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 CID/6-311G*
ABC
0.32506 0.29604 0.15950

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -1.194 0.347 0.000
C2 0.000 1.128 0.000
N3 1.105 0.508 0.000
C4 0.735 -0.894 0.000
C5 -0.762 -0.850 0.000
H6 -0.079 2.204 0.000
H7 1.140 -1.396 0.879
H8 1.140 -1.396 -0.879
H9 -1.426 -1.702 0.000

Atom - Atom Distances (Å)
  N1 C2 N3 C4 C5 H6 H7 H8 H9
N11.42632.30452.29411.27312.16553.04303.04302.0629
C21.42631.26762.15212.11991.07872.90612.90613.1695
N32.30451.26761.44992.30852.06902.09722.09723.3602
C42.29412.15211.44991.49753.20361.09001.09002.3073
C51.27312.11992.30851.49753.12962.16502.16501.0805
H62.16551.07872.06903.20363.12963.90153.90154.1321
H73.04302.90612.09721.09002.16503.90151.75742.7296
H83.04302.90612.09721.09002.16503.90151.75742.7296
H92.06293.16953.36022.30731.08054.13212.72962.7296

picture of 4H-Imidazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C2 N3 117.496 N1 C2 H6 118.985
N1 C5 C4 111.526 N1 C5 H9 122.226
C2 N1 C5 103.353 C2 N3 C4 104.528
N3 C2 H6 123.519 N3 C4 C5 103.097
N3 C4 H7 110.519 N3 C4 H8 110.519
C4 C5 H9 126.248 C5 C4 H7 112.638
C5 C4 H8 112.638 H7 C4 H8 107.441
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability