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All results from a given calculation for C4H6N2 (1H-Imidazole, 2-methyl-)

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-264.900305
Energy at 298.15K-264.908031
HF Energy-263.906999
Nuclear repulsion energy224.759682
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 3694 3498 54.38      
2 A 3309 3134 2.99      
3 A 3282 3109 4.56      
4 A 3203 3034 3.38      
5 A 3149 2982 17.26      
6 A 3078 2915 27.72      
7 A 1601 1517 33.54      
8 A 1546 1465 0.65      
9 A 1520 1440 10.54      
10 A 1518 1438 2.78      
11 A 1476 1398 43.50      
12 A 1449 1373 1.90      
13 A 1421 1346 0.06      
14 A 1307 1238 15.47      
15 A 1214 1150 2.23      
16 A 1143 1082 17.49      
17 A 1129 1069 13.80      
18 A 1073 1016 0.49      
19 A 1015 961 9.94      
20 A 982 930 1.92      
21 A 929 880 3.17      
22 A 803 760 26.31      
23 A 699 662 28.28      
24 A 687 650 1.18      
25 A 671 635 15.90      
26 A 642 608 36.78      
27 A 531 503 62.08      
28 A 348 330 5.37      
29 A 244 231 5.88      
30 A 78 73 0.23      

Unscaled Zero Point Vibrational Energy (zpe) 21869.1 cm-1
Scaled (by 0.9471) Zero Point Vibrational Energy (zpe) 20712.2 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
0.29559 0.12029 0.08689

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.110 -0.022 0.000
H2 2.502 0.486 0.886
H3 2.481 -1.046 -0.001
H4 2.502 0.488 -0.885
N5 -0.166 1.050 0.000
H6 0.156 2.005 -0.000
C7 0.620 -0.069 -0.000
N8 -0.123 -1.167 -0.000
C9 -1.426 -0.730 0.000
H10 -2.253 -1.427 -0.000
C11 -1.481 0.648 -0.000
H12 -2.302 1.349 0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 N5 H6 C7 N8 C9 H10 C11 H12
C11.09391.08921.09392.51632.81521.49082.50953.60684.58343.65274.6199
H21.09391.77081.77072.86742.93152.15293.22624.20675.20104.08314.9601
H31.08921.77081.77083.37653.83552.10142.60653.91994.74854.30825.3485
H41.09391.77071.77082.86692.93022.15293.22674.20705.20154.08284.9599
N52.51632.86743.37652.86691.00761.36802.21692.18053.23821.37442.1561
H62.81522.93153.83552.93021.00762.12513.18333.15914.19222.12592.5438
C71.49082.15292.10142.15291.36802.12511.32532.15053.17732.21983.2477
N82.50953.22622.60653.22672.21693.18331.32531.37462.14532.26593.3274
C93.60684.20673.91994.20702.18053.15912.15051.37461.08091.37842.2550
H104.58345.20104.74855.20153.23824.19223.17732.14531.08092.21342.7756
C113.65274.08314.30824.08281.37442.12592.21982.26591.37842.21341.0795
H124.61994.96015.34854.95992.15612.54383.24773.32742.25502.77561.0795

picture of 1H-Imidazole, 2-methyl- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C7 N5 123.278 C1 C7 N8 125.934
H2 C1 H3 108.415 H2 C1 H4 108.069
H2 C1 C7 111.885 H3 C1 H4 108.416
H3 C1 C7 108.062 H4 C1 C7 111.886
N5 C7 N8 110.788 N5 C11 C9 104.765
N5 C11 H12 122.507 H6 N5 C7 126.242
H6 N5 C11 125.676 C7 N5 C11 108.082
C7 N8 C9 105.583 N8 C9 H10 121.315
N8 C9 C11 110.782 C9 C11 H12 132.727
H10 C9 C11 127.904
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability