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

using model chemistry: G3B3

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at G3B3
 hartrees
Energy at 0K-265.344041
Energy at 298.15K-265.337455
Nuclear repulsion energy 
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 B3LYP/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 3645 3500 35.29      
2 A 3293 3163 4.65      
3 A 3263 3133 8.45      
4 A 3161 3035 4.94      
5 A 3089 2966 22.89      
6 A 3042 2921 35.41      
7 A 1609 1545 35.35      
8 A 1538 1477 2.75      
9 A 1516 1455 3.45      
10 A 1514 1454 7.43      
11 A 1457 1399 42.41      
12 A 1441 1383 0.42      
13 A 1404 1348 1.34      
14 A 1284 1233 15.60      
15 A 1192 1145 4.10      
16 A 1144 1099 1.96      
17 A 1109 1065 24.43      
18 A 1075 1032 1.72      
19 A 1015 974 9.98      
20 A 974 935 1.43      
21 A 928 891 3.08      
22 A 849 816 9.81      
23 A 722 693 31.20      
24 A 688 661 6.13      
25 A 679 652 1.35      
26 A 642 616 15.34      
27 A 501 481 77.27      
28 A 346 333 5.06      
29 A 251 241 5.89      
30 A 83 80 0.22      

Unscaled Zero Point Vibrational Energy (zpe) 21726.3 cm-1
Scaled (by 0.9603) Zero Point Vibrational Energy (zpe) 20863.8 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 B3LYP/6-31G*
ABC
0.29649 0.11968 0.08665

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.114 -0.023 0.000
H2 2.511 0.489 0.887
H3 2.491 -1.048 -0.001
H4 2.511 0.491 -0.885
N5 -0.169 1.053 0.000
H6 0.154 2.010 -0.001
C7 0.620 -0.070 -0.000
N8 -0.119 -1.162 -0.000
C9 -1.429 -0.729 -0.000
H10 -2.251 -1.431 0.000
C11 -1.488 0.640 0.000
H12 -2.309 1.341 0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 N5 H6 C7 N8 C9 H10 C11 H12
C11.09761.09181.09762.52382.82441.49482.50753.61284.58743.66254.6286
H21.09761.77441.77212.87802.94242.16143.22924.21755.21054.09824.9738
H31.09181.77441.77443.38943.84882.11102.61333.93314.75834.32205.3615
H41.09761.77211.77442.87742.94062.16143.22994.21795.21114.09804.9735
N52.52382.87803.38942.87741.00971.37242.21542.18253.24181.38222.1595
H62.82442.94243.84882.94061.00972.13163.18353.16314.19822.13802.5518
C71.49482.16142.11102.16141.37242.13161.31892.15253.17812.22433.2512
N82.50753.22922.61333.22992.21543.18351.31891.37902.14892.26233.3251
C93.61284.21753.93314.21792.18253.16312.15251.37901.08161.37002.2489
H104.58745.21054.75835.21113.24184.19823.17812.14891.08162.20732.7724
C113.66254.09824.32204.09801.38222.13802.22432.26231.37002.20731.0796
H124.62864.97385.36154.97352.15952.55183.25123.32512.24892.77241.0796

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 123.286 C1 C7 N8 125.924
H2 C1 H3 108.272 H2 C1 H4 107.652
H2 C1 C7 112.059 H3 C1 H4 108.274
H3 C1 C7 108.394 H4 C1 C7 112.061
N5 C7 N8 110.790 N5 C11 C9 104.928
N5 C11 H12 122.129 H6 N5 C7 126.302
H6 N5 C11 125.999 C7 N5 C11 107.699
C7 N8 C9 105.823 N8 C9 H10 121.220
N8 C9 C11 110.761 C9 C11 H12 132.943
H10 C9 C11 128.019
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.530 -0.262 -0.010 -0.457
2 H 0.160 0.063 0.023 0.111
3 H 0.192 0.100 0.059 0.149
4 H 0.160 0.063 0.023 0.111
5 N -0.589 -0.277 -1.280 -0.313
6 H 0.328 0.303 0.423 0.321
7 C 0.481 0.446 1.053 0.549
8 N -0.466 -0.554 -1.180 -0.564
9 C -0.033 0.151 0.420 0.106
10 H 0.130 0.072 0.058 0.104
11 C 0.019 -0.275 0.336 -0.318
12 H 0.147 0.170 0.073 0.200


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.482 3.550 -0.001 3.582
CHELPG 0.423 3.509 -0.001 3.535
AIM 0.351 0.121 0.000 0.371
ESP 0.467 3.524 -0.001 3.555


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.000 0.000 0.000
y 0.000 0.000 0.000
z 0.000 0.000 0.000


<r2> (average value of r2) Å2
<r2> 139.204
(<r2>)1/2 11.798