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

using model chemistry: CISD/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 CISD/6-311G*
 hartrees
Energy at 0K-225.496617
Energy at 298.15K-225.502706
HF Energy-224.859811
Nuclear repulsion energy164.244337
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 CISD/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' 3837 3550 69.82      
2 A' 3386 3133 2.89      
3 A' 3358 3108 0.66      
4 A' 3356 3105 8.23      
5 A' 1659 1535 18.27      
6 A' 1597 1478 22.65      
7 A' 1535 1420 20.31      
8 A' 1445 1337 8.43      
9 A' 1346 1246 0.61      
10 A' 1217 1126 6.86      
11 A' 1207 1117 1.14      
12 A' 1152 1066 18.94      
13 A' 1128 1044 45.68      
14 A' 985 911 2.23      
15 A' 948 877 7.17      
16 A" 907 839 0.41      
17 A" 885 819 35.23      
18 A" 768 711 49.02      
19 A" 707 654 8.97      
20 A" 668 618 13.27      
21 A" 527 488 117.13      

Unscaled Zero Point Vibrational Energy (zpe) 16308.6 cm-1
Scaled (by 0.9253) Zero Point Vibrational Energy (zpe) 15090.3 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 CISD/6-311G*
ABC
0.32950 0.31751 0.16170

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 1.101 0.000
C2 -1.079 0.279 0.000
C3 1.113 0.296 0.000
N4 -0.743 -0.977 0.000
C5 0.632 -0.978 0.000
H6 -0.011 2.099 0.000
H7 -2.087 0.657 0.000
H8 2.110 0.693 0.000
H9 1.189 -1.898 0.000

Atom - Atom Distances (Å)
  N1 C2 C3 N4 C5 H6 H7 H8 H9
N11.35661.37402.20642.17320.99782.13382.14943.2259
C21.35662.19241.29982.12372.11001.07643.21643.1439
C31.37402.19242.25011.36132.12503.22061.07372.1946
N42.20641.29982.25011.37533.16112.11543.30602.1405
C52.17322.12371.36131.37533.14343.17322.23111.0751
H60.99782.11002.12503.16113.14342.52752.54494.1729
H72.13381.07643.22062.11543.17322.52754.19774.1546
H82.14943.21641.07373.30602.23112.54494.19772.7499
H93.22593.14392.19462.14051.07514.17294.15462.7499

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 112.301 N1 C2 H7 122.150
N1 C3 C5 105.212 N1 C3 H8 122.370
C2 N1 C3 106.815 C2 N1 H6 126.652
C2 N4 C5 105.060 C3 N1 H6 126.533
C3 C5 N4 110.612 C3 C5 H9 128.130
N4 C2 H7 125.549 N4 C5 H9 121.259
C5 C3 H8 132.419
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability