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

using model chemistry: MP2/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/6-31G*
 hartrees
Energy at 0K-264.693572
Energy at 298.15K-264.701250
HF Energy-263.854377
Nuclear repulsion energy224.488966
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 MP2/6-31G*
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 3663 3454 61.20      
2 A 3331 3141 2.01      
3 A 3304 3116 4.31      
4 A 3226 3042 2.79      
5 A 3175 2994 15.45      
6 A 3102 2926 23.44      
7 A 1607 1515 29.53      
8 A 1568 1478 0.42      
9 A 1545 1457 8.56      
10 A 1537 1450 3.75      
11 A 1493 1408 45.60      
12 A 1466 1382 0.64      
13 A 1436 1354 0.21      
14 A 1313 1238 16.41      
15 A 1223 1154 2.18      
16 A 1154 1088 9.38      
17 A 1139 1074 18.67      
18 A 1091 1029 0.90      
19 A 1024 966 8.91      
20 A 987 931 1.57      
21 A 930 877 3.32      
22 A 804 758 25.17      
23 A 696 656 22.00      
24 A 687 648 1.39      
25 A 671 633 4.09      
26 A 631 595 40.62      
27 A 510 481 68.05      
28 A 350 330 5.45      
29 A 246 232 5.57      
30 A 69 65 0.34      

Unscaled Zero Point Vibrational Energy (zpe) 21987.0 cm-1
Scaled (by 0.943) Zero Point Vibrational Energy (zpe) 20733.8 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 MP2/6-31G*
ABC
0.29514 0.11997 0.08668

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.111 -0.022 0.000
H2 2.503 0.487 0.887
H3 2.480 -1.048 -0.001
H4 2.503 0.489 -0.885
N5 -0.165 1.052 0.000
H6 0.160 2.011 -0.000
C7 0.621 -0.071 -0.000
N8 -0.122 -1.169 -0.000
C9 -1.429 -0.728 0.000
H10 -2.255 -1.426 0.000
C11 -1.482 0.647 -0.000
H12 -2.301 1.351 0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 N5 H6 C7 N8 C9 H10 C11 H12
C11.09511.09061.09512.51722.81771.49082.51073.60924.58613.65484.6209
H21.09511.77401.77212.86772.93202.15393.22834.20935.20414.08554.9607
H31.09061.77401.77413.37803.83952.10032.60533.92174.75004.30955.3495
H41.09511.77211.77412.86722.93042.15393.22904.20985.20474.08524.9603
N52.51722.86773.37802.86721.01241.37122.22172.18283.24141.37782.1565
H62.81772.93203.83952.93041.01242.13243.19253.16624.20032.13492.5479
C71.49082.15392.10032.15391.37122.13241.32602.15223.17902.22223.2498
N82.51073.22832.60533.22902.22173.19251.32601.37862.14792.26843.3315
C93.60924.20933.92174.20982.18283.16622.15221.37861.08161.37572.2550
H104.58615.20414.75005.20473.24144.20033.17902.14791.08162.21182.7774
C113.65484.08554.30954.08521.37782.13492.22222.26841.37572.21181.0803
H124.62094.96075.34954.96032.15652.54793.24983.33152.25502.77741.0803

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 123.113 C1 C7 N8 125.983
H2 C1 H3 108.518 H2 C1 H4 108.020
H2 C1 C7 111.895 H3 C1 H4 108.519
H3 C1 C7 107.896 H4 C1 C7 111.895
N5 C7 N8 110.903 N5 C11 C9 104.884
N5 C11 H12 122.172 H6 N5 C7 126.257
H6 N5 C11 125.864 C7 N5 C11 107.879
C7 N8 C9 105.442 N8 C9 H10 121.168
N8 C9 C11 110.892 C9 C11 H12 132.944
H10 C9 C11 127.940
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability