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

using model chemistry: MP3/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP3/6-31G*
 hartrees
Energy at 0K-264.716219
Energy at 298.15K-264.723963
HF Energy-263.855796
Nuclear repulsion energy224.847058
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 MP3/6-31G*
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 3720 3492 63.53      
2 A 3341 3135 2.99      
3 A 3312 3109 5.14      
4 A 3220 3022 3.51      
5 A 3165 2970 16.89      
6 A 3103 2912 22.05      
7 A 1662 1560 36.53      
8 A 1583 1486 5.66      
9 A 1567 1471 6.94      
10 A 1543 1448 8.66      
11 A 1517 1424 50.92      
12 A 1475 1385 0.11      
13 A 1447 1358 0.64      
14 A 1321 1240 16.46      
15 A 1215 1140 5.27      
16 A 1172 1100 1.74      
17 A 1143 1073 26.16      
18 A 1096 1029 1.14      
19 A 1039 975 8.05      
20 A 1002 941 2.23      
21 A 947 888 2.80      
22 A 828 777 18.83      
23 A 718 674 30.53      
24 A 695 653 1.51      
25 A 685 643 8.57      
26 A 638 599 24.10      
27 A 484 454 84.60      
28 A 355 333 5.58      
29 A 256 240 7.19      
30 A 79 74 0.34      

Unscaled Zero Point Vibrational Energy (zpe) 22162.2 cm-1
Scaled (by 0.9386) Zero Point Vibrational Energy (zpe) 20801.4 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 MP3/6-31G*
ABC
0.29714 0.12013 0.08694

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.111 -0.022 0.000
H2 -2.499 0.491 -0.886
H3 -2.483 -1.048 -0.001
H4 -2.499 0.490 0.887
N5 0.166 1.050 -0.000
H6 -0.161 2.004 0.000
C7 -0.617 -0.071 -0.000
N8 0.117 -1.163 -0.000
C9 1.429 -0.726 -0.000
H10 2.252 -1.426 0.000
C11 1.484 0.641 0.000
H12 2.306 1.340 -0.001

Atom - Atom Distances (Å)
  C1 H2 H3 H4 N5 H6 C7 N8 C9 H10 C11 H12
C11.09541.09081.09542.51682.81241.49462.50323.60934.58363.65584.6226
H21.09541.77571.77352.86362.92292.15483.21974.20675.19974.08344.9595
H31.09081.77571.77573.37893.83472.10592.60273.92514.75034.31145.3513
H41.09541.77351.77572.86402.92332.15483.21934.20655.19934.08354.9600
N52.51682.86363.37892.86401.00821.36762.21362.17933.23791.38042.1599
H62.81242.92293.83472.92331.00822.12463.17903.15894.19372.13632.5549
C71.49462.15482.10592.15481.36762.12461.31592.14843.17332.21863.2461
N82.50323.21972.60273.21932.21363.17901.31591.38272.15122.26303.3250
C93.60934.20673.92514.20652.17933.15892.14841.38271.08071.36762.2442
H104.58365.19974.75035.19933.23794.19373.17332.15121.08072.20482.7663
C113.65584.08344.31144.08351.38042.13632.21862.26301.36762.20481.0792
H124.62264.95955.35134.96002.15992.55493.24613.32502.24422.76631.0792

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 123.063 C1 C7 N8 125.796
H2 C1 H3 108.626 H2 C1 H4 108.096
H2 C1 C7 111.674 H3 C1 H4 108.626
H3 C1 C7 108.062 H4 C1 C7 111.674
N5 C7 N8 111.141 N5 C11 C9 104.945
N5 C11 H12 122.373 H6 N5 C7 126.165
H6 N5 C11 126.157 C7 N5 C11 107.678
C7 N8 C9 105.499 N8 C9 H10 121.195
N8 C9 C11 110.738 C9 C11 H12 132.683
H10 C9 C11 128.068
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability