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

using model chemistry: B1B95/CEP-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 B1B95/CEP-31G*
 hartrees
Energy at 0K-45.956688
Energy at 298.15K-45.964405
Nuclear repulsion energy117.120437
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 B1B95/CEP-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 3690 3532 50.24      
2 A 3290 3150 3.60      
3 A 3257 3118 6.52      
4 A 3198 3062 8.05      
5 A 3143 3009 25.88      
6 A 3076 2945 34.48      
7 A 1616 1546 39.80      
8 A 1545 1479 8.51      
9 A 1503 1438 5.93      
10 A 1477 1414 11.86      
11 A 1445 1384 42.81      
12 A 1423 1362 1.68      
13 A 1394 1334 1.26      
14 A 1280 1225 16.81      
15 A 1209 1158 3.31      
16 A 1128 1080 8.95      
17 A 1106 1058 27.25      
18 A 1039 995 2.22      
19 A 993 950 8.37      
20 A 958 917 1.03      
21 A 896 857 3.31      
22 A 873 836 14.79      
23 A 745 713 79.44      
24 A 689 659 0.00      
25 A 674 645 1.07      
26 A 634 606 21.65      
27 A 568 543 67.77      
28 A 334 320 4.88      
29 A 256 245 7.17      
30 A 72 69 0.28      

Unscaled Zero Point Vibrational Energy (zpe) 21754.9 cm-1
Scaled (by 0.9572) Zero Point Vibrational Energy (zpe) 20823.8 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 B1B95/CEP-31G*
ABC
0.29156 0.11843 0.08560

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/CEP-31G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.129 -0.023 -0.000
H2 2.521 0.492 0.894
H3 2.506 -1.054 -0.001
H4 2.521 0.493 -0.893
N5 -0.167 1.057 0.000
H6 0.160 2.017 -0.000
C7 0.619 -0.073 -0.000
N8 -0.125 -1.171 0.000
C9 -1.436 -0.737 0.000
H10 -2.268 -1.440 0.000
C11 -1.492 0.654 -0.000
H12 -2.318 1.362 -0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 N5 H6 C7 N8 C9 H10 C11 H12
C11.10301.09811.10302.53712.83511.51122.53013.63634.62013.68444.6576
H21.10301.78601.78642.88822.94952.17613.25044.23875.24064.11494.9969
H31.09811.78601.78603.40593.86462.12682.63353.95474.78954.34805.3949
H41.10301.78641.78602.88762.94822.17613.25104.23905.24114.11464.9964
N52.53712.88823.40592.88761.01421.37632.22882.19793.26371.38572.1725
H62.83512.94953.86462.94821.01422.13993.20123.18354.22482.14232.5630
C71.51122.17612.12682.17611.37632.13991.32652.15963.19422.23303.2685
N82.53013.25042.63353.25102.22883.20121.32651.38112.15982.28073.3506
C93.63634.23873.95474.23902.19793.18352.15961.38111.08921.39242.2770
H104.62015.24064.78955.24113.26374.22483.19422.15981.08922.23322.8028
C113.68444.11494.34804.11461.38572.14232.23302.28071.39242.23321.0874
H124.65764.99695.39494.99642.17252.56303.26853.35062.27702.80281.0874

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 122.894 C1 C7 N8 126.022
H2 C1 H3 108.472 H2 C1 H4 108.161
H2 C1 C7 111.745 H3 C1 H4 108.473
H3 C1 C7 108.147 H4 C1 C7 111.747
N5 C7 N8 111.085 N5 C11 C9 104.590
N5 C11 H12 122.456 H6 N5 C7 126.391
H6 N5 C11 125.715 C7 N5 C11 107.895
C7 N8 C9 105.790 N8 C9 H10 121.481
N8 C9 C11 110.641 C9 C11 H12 132.955
H10 C9 C11 127.878
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.313      
2 H 0.140      
3 H 0.180      
4 H 0.140      
5 N 0.105      
6 H 0.340      
7 C -0.729      
8 N 0.254      
9 C -0.307      
10 H 0.300      
11 C -0.420      
12 H 0.307      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.579 3.754 -0.000 3.799
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.937 0.602 -0.000
y 0.602 -33.201 -0.001
z -0.000 -0.001 -37.453
Traceless
 xyz
x 5.390 0.602 -0.000
y 0.602 0.494 -0.001
z -0.000 -0.001 -5.884
Polar
3z2-r2-11.768
x2-y23.264
xy0.602
xz-0.000
yz-0.001


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.883 0.069 0.000
y 0.069 8.189 -0.000
z 0.000 -0.000 4.627


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000